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1016 Commits
patch_1Sep
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patch_5Feb
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| 6f23f6535c |
@ -6,8 +6,8 @@ cmake_minimum_required(VERSION 3.1)
|
|||||||
|
|
||||||
project(lammps)
|
project(lammps)
|
||||||
set(SOVERSION 0)
|
set(SOVERSION 0)
|
||||||
set(LAMMPS_SOURCE_DIR ${CMAKE_SOURCE_DIR}/../src)
|
set(LAMMPS_SOURCE_DIR ${CMAKE_CURRENT_SOURCE_DIR}/../src)
|
||||||
set(LAMMPS_LIB_SOURCE_DIR ${CMAKE_SOURCE_DIR}/../lib)
|
set(LAMMPS_LIB_SOURCE_DIR ${CMAKE_CURRENT_SOURCE_DIR}/../lib)
|
||||||
set(LAMMPS_LIB_BINARY_DIR ${CMAKE_BINARY_DIR}/lib)
|
set(LAMMPS_LIB_BINARY_DIR ${CMAKE_BINARY_DIR}/lib)
|
||||||
|
|
||||||
#To not conflict with old Makefile build system, we build everything here
|
#To not conflict with old Makefile build system, we build everything here
|
||||||
@ -16,20 +16,18 @@ file(GLOB LMP_SOURCES ${LAMMPS_SOURCE_DIR}/main.cpp)
|
|||||||
list(REMOVE_ITEM LIB_SOURCES ${LMP_SOURCES})
|
list(REMOVE_ITEM LIB_SOURCES ${LMP_SOURCES})
|
||||||
|
|
||||||
# Cmake modules/macros are in a subdirectory to keep this file cleaner
|
# Cmake modules/macros are in a subdirectory to keep this file cleaner
|
||||||
set(CMAKE_MODULE_PATH ${CMAKE_SOURCE_DIR}/Modules)
|
set(CMAKE_MODULE_PATH ${CMAKE_CURRENT_SOURCE_DIR}/Modules)
|
||||||
|
|
||||||
if(NOT CMAKE_BUILD_TYPE AND NOT CMAKE_CXX_FLAGS)
|
if(NOT CMAKE_BUILD_TYPE AND NOT CMAKE_CXX_FLAGS)
|
||||||
#release comes with -O3 by default
|
#release comes with -O3 by default
|
||||||
set(CMAKE_BUILD_TYPE Release CACHE STRING "Choose the type of build, options are: None Debug Release RelWithDebInfo MinSizeRel." FORCE)
|
set(CMAKE_BUILD_TYPE Release CACHE STRING "Choose the type of build, options are: None Debug Release RelWithDebInfo MinSizeRel." FORCE)
|
||||||
endif(NOT CMAKE_BUILD_TYPE AND NOT CMAKE_CXX_FLAGS)
|
endif(NOT CMAKE_BUILD_TYPE AND NOT CMAKE_CXX_FLAGS)
|
||||||
|
|
||||||
foreach(STYLE_FILE style_angle.h style_atom.h style_body.h style_bond.h style_command.h style_compute.h style_dihedral.h style_dump.h
|
# remove any style headers in the src dir
|
||||||
style_fix.h style_improper.h style_integrate.h style_kspace.h style_minimize.h style_nbin.h style_npair.h style_nstencil.h
|
file(GLOB SRC_STYLE_FILES ${LAMMPS_SOURCE_DIR}/style_*.h)
|
||||||
style_ntopo.h style_pair.h style_reader.h style_region.h)
|
if(SRC_STYLE_FILES)
|
||||||
if(EXISTS ${LAMMPS_SOURCE_DIR}/${STYLE_FILE})
|
file(REMOVE ${SRC_STYLE_FILES})
|
||||||
message(FATAL_ERROR "There is a ${STYLE_FILE} in ${LAMMPS_SOURCE_DIR}, please clean up the source directory first")
|
endif()
|
||||||
endif()
|
|
||||||
endforeach()
|
|
||||||
|
|
||||||
enable_language(CXX)
|
enable_language(CXX)
|
||||||
|
|
||||||
@ -39,14 +37,22 @@ enable_language(CXX)
|
|||||||
#####################################################################
|
#####################################################################
|
||||||
include(CheckCCompilerFlag)
|
include(CheckCCompilerFlag)
|
||||||
|
|
||||||
|
if (${CMAKE_CXX_COMPILER_ID} STREQUAL "Intel")
|
||||||
|
set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -restrict")
|
||||||
|
endif()
|
||||||
|
|
||||||
########################################################################
|
########################################################################
|
||||||
# User input options #
|
# User input options #
|
||||||
########################################################################
|
########################################################################
|
||||||
option(BUILD_SHARED_LIBS "Build shared libs" OFF)
|
option(BUILD_SHARED_LIBS "Build shared libs" OFF)
|
||||||
option(INSTALL_LIB "Install lammps library and header" ON)
|
if(BUILD_SHARED_LIBS) # for all pkg libs, mpi_stubs and linalg
|
||||||
|
set(CMAKE_POSITION_INDEPENDENT_CODE ON)
|
||||||
|
endif()
|
||||||
include(GNUInstallDirs)
|
include(GNUInstallDirs)
|
||||||
|
|
||||||
set(LAMMPS_LINK_LIBS)
|
set(LAMMPS_LINK_LIBS)
|
||||||
|
set(LAMMPS_DEPS)
|
||||||
|
set(LAMMPS_API_DEFINES)
|
||||||
option(ENABLE_MPI "Build MPI version" OFF)
|
option(ENABLE_MPI "Build MPI version" OFF)
|
||||||
if(ENABLE_MPI)
|
if(ENABLE_MPI)
|
||||||
find_package(MPI REQUIRED)
|
find_package(MPI REQUIRED)
|
||||||
@ -58,13 +64,15 @@ if(ENABLE_MPI)
|
|||||||
endif()
|
endif()
|
||||||
else()
|
else()
|
||||||
file(GLOB MPI_SOURCES ${LAMMPS_SOURCE_DIR}/STUBS/mpi.c)
|
file(GLOB MPI_SOURCES ${LAMMPS_SOURCE_DIR}/STUBS/mpi.c)
|
||||||
list(APPEND LIB_SOURCES ${MPI_SOURCES})
|
add_library(mpi_stubs STATIC ${MPI_SOURCES})
|
||||||
include_directories(${LAMMPS_SOURCE_DIR}/STUBS)
|
include_directories(${LAMMPS_SOURCE_DIR}/STUBS)
|
||||||
|
list(APPEND LAMMPS_LINK_LIBS mpi_stubs)
|
||||||
endif()
|
endif()
|
||||||
|
|
||||||
set(LAMMPS_SIZE_LIMIT "LAMMPS_SMALLBIG" CACHE STRING "Lammps size limit")
|
set(LAMMPS_SIZE_LIMIT "LAMMPS_SMALLBIG" CACHE STRING "Lammps size limit")
|
||||||
set_property(CACHE LAMMPS_SIZE_LIMIT PROPERTY STRINGS LAMMPS_SMALLBIG LAMMPS_BIGBIG LAMMPS_SMALLSMALL)
|
set_property(CACHE LAMMPS_SIZE_LIMIT PROPERTY STRINGS LAMMPS_SMALLBIG LAMMPS_BIGBIG LAMMPS_SMALLSMALL)
|
||||||
add_definitions(-D${LAMMPS_SIZE_LIMIT})
|
add_definitions(-D${LAMMPS_SIZE_LIMIT})
|
||||||
|
set(LAMMPS_API_DEFINES "${LAMMPS_API_DEFINES} -D${LAMMPS_SIZE_LIMIT}")
|
||||||
|
|
||||||
set(LAMMPS_MEMALIGN "64" CACHE STRING "enables the use of the posix_memalign() call instead of malloc() when large chunks or memory are allocated by LAMMPS")
|
set(LAMMPS_MEMALIGN "64" CACHE STRING "enables the use of the posix_memalign() call instead of malloc() when large chunks or memory are allocated by LAMMPS")
|
||||||
add_definitions(-DLAMMPS_MEMALIGN=${LAMMPS_MEMALIGN})
|
add_definitions(-DLAMMPS_MEMALIGN=${LAMMPS_MEMALIGN})
|
||||||
@ -72,6 +80,13 @@ add_definitions(-DLAMMPS_MEMALIGN=${LAMMPS_MEMALIGN})
|
|||||||
option(LAMMPS_EXCEPTIONS "enable the use of C++ exceptions for error messages (useful for library interface)" OFF)
|
option(LAMMPS_EXCEPTIONS "enable the use of C++ exceptions for error messages (useful for library interface)" OFF)
|
||||||
if(LAMMPS_EXCEPTIONS)
|
if(LAMMPS_EXCEPTIONS)
|
||||||
add_definitions(-DLAMMPS_EXCEPTIONS)
|
add_definitions(-DLAMMPS_EXCEPTIONS)
|
||||||
|
set(LAMMPS_API_DEFINES "${LAMMPS_API_DEFINES} -DLAMMPS_EXCEPTIONS")
|
||||||
|
endif()
|
||||||
|
|
||||||
|
set(LAMMPS_MACHINE "" CACHE STRING "Suffix to append to lmp binary and liblammps (WON'T enable any features automatically")
|
||||||
|
mark_as_advanced(LAMMPS_MACHINE)
|
||||||
|
if(LAMMPS_MACHINE)
|
||||||
|
set(LAMMPS_MACHINE "_${LAMMPS_MACHINE}")
|
||||||
endif()
|
endif()
|
||||||
|
|
||||||
option(CMAKE_VERBOSE_MAKEFILE "Verbose makefile" OFF)
|
option(CMAKE_VERBOSE_MAKEFILE "Verbose makefile" OFF)
|
||||||
@ -85,12 +100,12 @@ option(ENABLE_ALL "Build all default packages" OFF)
|
|||||||
set(DEFAULT_PACKAGES ASPHERE BODY CLASS2 COLLOID COMPRESS CORESHELL DIPOLE GRANULAR
|
set(DEFAULT_PACKAGES ASPHERE BODY CLASS2 COLLOID COMPRESS CORESHELL DIPOLE GRANULAR
|
||||||
KSPACE MANYBODY MC MEAM MISC MOLECULE PERI QEQ
|
KSPACE MANYBODY MC MEAM MISC MOLECULE PERI QEQ
|
||||||
REAX REPLICA RIGID SHOCK SNAP SRD)
|
REAX REPLICA RIGID SHOCK SNAP SRD)
|
||||||
set(OTHER_PACKAGES KIM PYTHON MSCG MPIIO VORONOI POEMS
|
set(OTHER_PACKAGES KIM PYTHON MSCG MPIIO VORONOI POEMS LATTE
|
||||||
USER-ATC USER-AWPMD USER-CGDNA
|
USER-ATC USER-AWPMD USER-CGDNA USER-MESO
|
||||||
USER-CGSDK USER-COLVARS USER-DIFFRACTION USER-DPD USER-DRUDE USER-EFF
|
USER-CGSDK USER-COLVARS USER-DIFFRACTION USER-DPD USER-DRUDE USER-EFF
|
||||||
USER-FEP USER-H5MD USER-LB USER-MANIFOLD USER-MEAMC USER-MGPT USER-MISC
|
USER-FEP USER-H5MD USER-LB USER-MANIFOLD USER-MEAMC USER-MGPT USER-MISC
|
||||||
USER-MOLFILE USER-NETCDF USER-PHONON USER-QTB USER-REAXC USER-SMD
|
USER-MOFFF USER-MOLFILE USER-NETCDF USER-PHONON USER-QTB USER-REAXC USER-SMD
|
||||||
USER-SMTBQ USER-SPH USER-TALLY USER-VTK USER-QUIP USER-QMMM)
|
USER-SMTBQ USER-SPH USER-TALLY USER-UEF USER-VTK USER-QUIP USER-QMMM)
|
||||||
set(ACCEL_PACKAGES USER-OMP KOKKOS OPT USER-INTEL GPU)
|
set(ACCEL_PACKAGES USER-OMP KOKKOS OPT USER-INTEL GPU)
|
||||||
foreach(PKG ${DEFAULT_PACKAGES})
|
foreach(PKG ${DEFAULT_PACKAGES})
|
||||||
option(ENABLE_${PKG} "Build ${PKG} Package" ${ENABLE_ALL})
|
option(ENABLE_${PKG} "Build ${PKG} Package" ${ENABLE_ALL})
|
||||||
@ -120,8 +135,10 @@ endif()
|
|||||||
######################################################
|
######################################################
|
||||||
# packages with special compiler needs or external libs
|
# packages with special compiler needs or external libs
|
||||||
######################################################
|
######################################################
|
||||||
if(ENABLE_REAX OR ENABLE_MEAM OR ENABLE_USER-QUIP OR ENABLE_USER-QMMM)
|
if(ENABLE_REAX OR ENABLE_MEAM OR ENABLE_USER-QUIP OR ENABLE_USER-QMMM OR ENABLE_LATTE)
|
||||||
enable_language(Fortran)
|
enable_language(Fortran)
|
||||||
|
include(CheckFortranCompilerFlag)
|
||||||
|
check_Fortran_compiler_flag("-fno-second-underscore" FC_HAS_NO_SECOND_UNDERSCORE)
|
||||||
endif()
|
endif()
|
||||||
|
|
||||||
if(ENABLE_KOKKOS OR ENABLE_MSCG)
|
if(ENABLE_KOKKOS OR ENABLE_MSCG)
|
||||||
@ -153,21 +170,18 @@ if(ENABLE_KSPACE)
|
|||||||
endif()
|
endif()
|
||||||
endif()
|
endif()
|
||||||
|
|
||||||
if(ENABLE_MISC)
|
if(ENABLE_MSCG OR ENABLE_USER-ATC OR ENABLE_USER-AWPMD OR ENABLE_USER-QUIP OR ENABLE_LATTE)
|
||||||
option(LAMMPS_XDR "include XDR compatibility files for doing particle dumps in XTC format" OFF)
|
|
||||||
if(LAMMPS_XDR)
|
|
||||||
add_definitions(-DLAMMPS_XDR)
|
|
||||||
endif()
|
|
||||||
endif()
|
|
||||||
|
|
||||||
if(ENABLE_MSCG OR ENABLE_USER-ATC OR ENABLE_USER-AWPMD OR ENABLE_USER-QUIP)
|
|
||||||
find_package(LAPACK)
|
find_package(LAPACK)
|
||||||
if(LAPACK_FOUND)
|
if(NOT LAPACK_FOUND)
|
||||||
list(APPEND LAMMPS_LINK_LIBS ${LAPACK_LIBRARIES})
|
|
||||||
else()
|
|
||||||
enable_language(Fortran)
|
enable_language(Fortran)
|
||||||
file(GLOB LAPACK_SOURCES ${LAMMPS_LIB_SOURCE_DIR}/linalg/*.f)
|
file(GLOB LAPACK_SOURCES ${LAMMPS_LIB_SOURCE_DIR}/linalg/*.f)
|
||||||
list(APPEND LIB_SOURCES ${LAPACK_SOURCES})
|
add_library(linalg STATIC ${LAPACK_SOURCES})
|
||||||
|
include(CheckFortranCompilerFlag)
|
||||||
|
check_Fortran_compiler_flag("-fno-second-underscore" FC_HAS_NO_SECOND_UNDERSCORE)
|
||||||
|
if(FC_HAS_NO_SECOND_UNDERSCORE)
|
||||||
|
target_compile_options(linalg PRIVATE -fno-second-underscore)
|
||||||
|
endif()
|
||||||
|
set(LAPACK_LIBRARIES linalg)
|
||||||
endif()
|
endif()
|
||||||
endif()
|
endif()
|
||||||
|
|
||||||
@ -177,14 +191,13 @@ if(ENABLE_PYTHON)
|
|||||||
add_definitions(-DLMP_PYTHON)
|
add_definitions(-DLMP_PYTHON)
|
||||||
include_directories(${PYTHON_INCLUDE_DIR})
|
include_directories(${PYTHON_INCLUDE_DIR})
|
||||||
list(APPEND LAMMPS_LINK_LIBS ${PYTHON_LIBRARY})
|
list(APPEND LAMMPS_LINK_LIBS ${PYTHON_LIBRARY})
|
||||||
if(NOT PYTHON_INSTDIR)
|
if(BUILD_SHARED_LIBS)
|
||||||
execute_process(COMMAND ${PYTHON_EXECUTABLE}
|
if(NOT PYTHON_INSTDIR)
|
||||||
-c "import distutils.sysconfig as cg; print(cg.get_python_lib(1,0,prefix='${CMAKE_INSTALL_PREFIX}'))"
|
execute_process(COMMAND ${PYTHON_EXECUTABLE}
|
||||||
OUTPUT_VARIABLE PYTHON_INSTDIR OUTPUT_STRIP_TRAILING_WHITESPACE)
|
-c "import distutils.sysconfig as cg; print(cg.get_python_lib(1,0,prefix='${CMAKE_INSTALL_PREFIX}'))"
|
||||||
endif()
|
OUTPUT_VARIABLE PYTHON_INSTDIR OUTPUT_STRIP_TRAILING_WHITESPACE)
|
||||||
install(FILES ${CMAKE_SOURCE_DIR}/../python/lammps.py DESTINATION ${PYTHON_INSTDIR})
|
endif()
|
||||||
if(NOT BUILD_SHARED_LIBS)
|
install(FILES ${CMAKE_CURRENT_SOURCE_DIR}/../python/lammps.py DESTINATION ${PYTHON_INSTDIR})
|
||||||
message(FATAL_ERROR "Python package need lammps to be build shared, use -DBUILD_SHARED_LIBS=ON")
|
|
||||||
endif()
|
endif()
|
||||||
endif()
|
endif()
|
||||||
|
|
||||||
@ -221,8 +234,29 @@ if(ENABLE_VORONOI)
|
|||||||
list(APPEND LAMMPS_LINK_LIBS ${VORO_LIBRARIES})
|
list(APPEND LAMMPS_LINK_LIBS ${VORO_LIBRARIES})
|
||||||
endif()
|
endif()
|
||||||
|
|
||||||
|
if(ENABLE_LATTE)
|
||||||
|
find_package(LATTE QUIET)
|
||||||
|
if(NOT LATTE_FOUND)
|
||||||
|
message(STATUS "LATTE not found - we will build our own")
|
||||||
|
include(ExternalProject)
|
||||||
|
ExternalProject_Add(latte_build
|
||||||
|
URL https://github.com/lanl/LATTE/archive/v1.0.1.tar.gz
|
||||||
|
URL_MD5 5137e28cb1a64444bd571c98c98a6eee
|
||||||
|
SOURCE_SUBDIR cmake
|
||||||
|
CMAKE_ARGS -DCMAKE_INSTALL_PREFIX=<INSTALL_DIR> -DCMAKE_POSITION_INDEPENDENT_CODE=${CMAKE_POSITION_INDEPENDENT_CODE}
|
||||||
|
)
|
||||||
|
ExternalProject_get_property(latte_build INSTALL_DIR)
|
||||||
|
set(LATTE_LIBRARIES ${INSTALL_DIR}/${CMAKE_INSTALL_LIBDIR}/liblatte.a)
|
||||||
|
list(APPEND LAMMPS_DEPS latte_build)
|
||||||
|
endif()
|
||||||
|
list(APPEND LAMMPS_LINK_LIBS ${LATTE_LIBRARIES} ${LAPACK_LIBRARIES} ${CMAKE_Fortran_IMPLICIT_LINK_LIBRARIES})
|
||||||
|
endif()
|
||||||
|
|
||||||
if(ENABLE_USER-MOLFILE)
|
if(ENABLE_USER-MOLFILE)
|
||||||
list(APPEND LAMMPS_LINK_LIBS ${CMAKE_DL_LIBS})
|
add_library(molfile INTERFACE)
|
||||||
|
target_include_directories(molfile INTERFACE ${LAMMPS_LIB_SOURCE_DIR}/molfile)
|
||||||
|
target_link_libraries(molfile INTERFACE ${CMAKE_DL_LIBS})
|
||||||
|
list(APPEND LAMMPS_LINK_LIBS molfile)
|
||||||
endif()
|
endif()
|
||||||
|
|
||||||
if(ENABLE_USER-NETCDF)
|
if(ENABLE_USER-NETCDF)
|
||||||
@ -239,7 +273,7 @@ endif()
|
|||||||
|
|
||||||
if(ENABLE_USER-QUIP)
|
if(ENABLE_USER-QUIP)
|
||||||
find_package(QUIP REQUIRED)
|
find_package(QUIP REQUIRED)
|
||||||
list(APPEND LAMMPS_LINK_LIBS ${QUIP_LIBRARIES} ${CMAKE_Fortran_IMPLICIT_LINK_LIBRARIES})
|
list(APPEND LAMMPS_LINK_LIBS ${QUIP_LIBRARIES} ${LAPACK_LIBRARIES} ${CMAKE_Fortran_IMPLICIT_LINK_LIBRARIES})
|
||||||
endif()
|
endif()
|
||||||
|
|
||||||
if(ENABLE_USER-QMMM)
|
if(ENABLE_USER-QMMM)
|
||||||
@ -248,17 +282,6 @@ if(ENABLE_USER-QMMM)
|
|||||||
list(APPEND LAMMPS_LINK_LIBS ${QE_LIBRARIES} ${CMAKE_Fortran_IMPLICIT_LINK_LIBRARIES})
|
list(APPEND LAMMPS_LINK_LIBS ${QE_LIBRARIES} ${CMAKE_Fortran_IMPLICIT_LINK_LIBRARIES})
|
||||||
endif()
|
endif()
|
||||||
|
|
||||||
if(ENABLE_USER-AWPMD)
|
|
||||||
include_directories(${LAMMPS_LIB_SOURCE_DIR}/awpmd/systems/interact
|
|
||||||
${LAMMPS_LIB_SOURCE_DIR}/awpmd/ivutils/include)
|
|
||||||
endif()
|
|
||||||
|
|
||||||
if(ENABLE_USER-H5MD)
|
|
||||||
find_package(HDF5 REQUIRED)
|
|
||||||
list(APPEND LAMMPS_LINK_LIBS ${HDF5_LIBRARIES})
|
|
||||||
include_directories(${HDF5_INCLUDE_DIRS} ${LAMMPS_LIB_SOURCE_DIR}/h5md/include)
|
|
||||||
endif()
|
|
||||||
|
|
||||||
if(ENABLE_USER-VTK)
|
if(ENABLE_USER-VTK)
|
||||||
find_package(VTK REQUIRED NO_MODULE)
|
find_package(VTK REQUIRED NO_MODULE)
|
||||||
include(${VTK_USE_FILE})
|
include(${VTK_USE_FILE})
|
||||||
@ -289,13 +312,11 @@ if(ENABLE_MSCG)
|
|||||||
WORKING_DIRECTORY ${LAMMPS_LIB_BINARY_DIR}/mscg)
|
WORKING_DIRECTORY ${LAMMPS_LIB_BINARY_DIR}/mscg)
|
||||||
endif()
|
endif()
|
||||||
file(GLOB MSCG_SOURCES ${LAMMPS_LIB_MSCG_BIN_DIR}/*.cpp)
|
file(GLOB MSCG_SOURCES ${LAMMPS_LIB_MSCG_BIN_DIR}/*.cpp)
|
||||||
list(APPEND LIB_SOURCES ${MSCG_SOURCES})
|
add_library(mscg STATIC ${MSCG_SOURCES})
|
||||||
foreach(MSCG_SOURCE ${MSCG_SOURCES})
|
list(APPEND LAMMPS_LINK_LIBS mscg)
|
||||||
set_property(SOURCE ${MSCG_SOURCE} APPEND PROPERTY COMPILE_DEFINITIONS
|
target_compile_options(mscg PRIVATE -DDIMENSION=3 -D_exclude_gromacs=1)
|
||||||
DIMENSION=3 _exclude_gromacs=1)
|
target_include_directories(mscg PUBLIC ${LAMMPS_LIB_MSCG_BIN_DIR})
|
||||||
endforeach()
|
target_link_libraries(mscg ${GSL_LIBRARIES} ${LAPACK_LIBRARIES})
|
||||||
include_directories(${LAMMPS_LIB_MSCG_BIN_DIR} ${GSL_INCLUDE_DIRS})
|
|
||||||
list(APPEND LAMMPS_LINK_LIBS ${GSL_LIBRARIES})
|
|
||||||
endif()
|
endif()
|
||||||
|
|
||||||
########################################################################
|
########################################################################
|
||||||
@ -321,7 +342,7 @@ endforeach(FUNC)
|
|||||||
list(APPEND LAMMPS_LINK_LIBS ${MATH_LIBRARIES})
|
list(APPEND LAMMPS_LINK_LIBS ${MATH_LIBRARIES})
|
||||||
|
|
||||||
######################################
|
######################################
|
||||||
# Generate Basic Style files
|
# Generate Basic Style files
|
||||||
######################################
|
######################################
|
||||||
include(StyleHeaderUtils)
|
include(StyleHeaderUtils)
|
||||||
RegisterStyles(${LAMMPS_SOURCE_DIR})
|
RegisterStyles(${LAMMPS_SOURCE_DIR})
|
||||||
@ -330,13 +351,27 @@ RegisterStyles(${LAMMPS_SOURCE_DIR})
|
|||||||
# add sources of enabled packages
|
# add sources of enabled packages
|
||||||
############################################
|
############################################
|
||||||
foreach(PKG ${DEFAULT_PACKAGES} ${OTHER_PACKAGES})
|
foreach(PKG ${DEFAULT_PACKAGES} ${OTHER_PACKAGES})
|
||||||
if(ENABLE_${PKG})
|
set(${PKG}_SOURCES_DIR ${LAMMPS_SOURCE_DIR}/${PKG})
|
||||||
set(${PKG}_SOURCES_DIR ${LAMMPS_SOURCE_DIR}/${PKG})
|
|
||||||
|
|
||||||
|
# ignore PKG files which were manually installed in src folder
|
||||||
|
# headers are ignored during RegisterStyles
|
||||||
|
file(GLOB ${PKG}_SOURCES ${${PKG}_SOURCES_DIR}/*.cpp)
|
||||||
|
file(GLOB ${PKG}_HEADERS ${${PKG}_SOURCES_DIR}/*.h)
|
||||||
|
|
||||||
|
foreach(PKG_FILE in ${${PKG}_SOURCES})
|
||||||
|
get_filename_component(FNAME ${PKG_FILE} NAME)
|
||||||
|
list(REMOVE_ITEM LIB_SOURCES ${LAMMPS_SOURCE_DIR}/${FNAME})
|
||||||
|
endforeach()
|
||||||
|
|
||||||
|
foreach(PKG_FILE in ${${PKG}_HEADERS})
|
||||||
|
get_filename_component(FNAME ${PKG_FILE} NAME)
|
||||||
|
DetectAndRemovePackageHeader(${LAMMPS_SOURCE_DIR}/${FNAME})
|
||||||
|
endforeach()
|
||||||
|
|
||||||
|
if(ENABLE_${PKG})
|
||||||
# detects styles in package and adds them to global list
|
# detects styles in package and adds them to global list
|
||||||
RegisterStyles(${${PKG}_SOURCES_DIR})
|
RegisterStyles(${${PKG}_SOURCES_DIR})
|
||||||
|
|
||||||
file(GLOB ${PKG}_SOURCES ${${PKG}_SOURCES_DIR}/*.cpp)
|
|
||||||
list(APPEND LIB_SOURCES ${${PKG}_SOURCES})
|
list(APPEND LIB_SOURCES ${${PKG}_SOURCES})
|
||||||
include_directories(${${PKG}_SOURCES_DIR})
|
include_directories(${${PKG}_SOURCES_DIR})
|
||||||
endif()
|
endif()
|
||||||
@ -346,17 +381,57 @@ endforeach()
|
|||||||
# add lib sources of (simple) enabled packages
|
# add lib sources of (simple) enabled packages
|
||||||
############################################
|
############################################
|
||||||
foreach(SIMPLE_LIB REAX MEAM POEMS USER-ATC USER-AWPMD USER-COLVARS USER-H5MD
|
foreach(SIMPLE_LIB REAX MEAM POEMS USER-ATC USER-AWPMD USER-COLVARS USER-H5MD
|
||||||
USER-MOLFILE USER-QMMM)
|
USER-QMMM)
|
||||||
if(ENABLE_${SIMPLE_LIB})
|
if(ENABLE_${SIMPLE_LIB})
|
||||||
string(REGEX REPLACE "^USER-" "" SIMPLE_LIB "${SIMPLE_LIB}")
|
string(REGEX REPLACE "^USER-" "" PKG_LIB "${SIMPLE_LIB}")
|
||||||
string(TOLOWER "${SIMPLE_LIB}" INC_DIR)
|
string(TOLOWER "${PKG_LIB}" PKG_LIB)
|
||||||
file(GLOB_RECURSE ${SIMPLE_LIB}_SOURCES ${LAMMPS_LIB_SOURCE_DIR}/${INC_DIR}/*.F
|
file(GLOB_RECURSE ${PKG_LIB}_SOURCES ${LAMMPS_LIB_SOURCE_DIR}/${PKG_LIB}/*.F
|
||||||
${LAMMPS_LIB_SOURCE_DIR}/${INC_DIR}/*.c ${LAMMPS_LIB_SOURCE_DIR}/${INC_DIR}/*.cpp)
|
${LAMMPS_LIB_SOURCE_DIR}/${PKG_LIB}/*.c ${LAMMPS_LIB_SOURCE_DIR}/${PKG_LIB}/*.cpp)
|
||||||
list(APPEND LIB_SOURCES ${${SIMPLE_LIB}_SOURCES})
|
add_library(${PKG_LIB} STATIC ${${PKG_LIB}_SOURCES})
|
||||||
include_directories(${LAMMPS_LIB_SOURCE_DIR}/${INC_DIR})
|
list(APPEND LAMMPS_LINK_LIBS ${PKG_LIB})
|
||||||
|
if(PKG_LIB STREQUAL awpmd)
|
||||||
|
target_include_directories(awpmd PUBLIC ${LAMMPS_LIB_SOURCE_DIR}/awpmd/systems/interact ${LAMMPS_LIB_SOURCE_DIR}/awpmd/ivutils/include)
|
||||||
|
elseif(PKG_LIB STREQUAL h5md)
|
||||||
|
target_include_directories(h5md PUBLIC ${LAMMPS_LIB_SOURCE_DIR}/h5md/include)
|
||||||
|
elseif(PKG_LIB STREQUAL colvars)
|
||||||
|
target_compile_options(colvars PRIVATE -DLEPTON)
|
||||||
|
target_include_directories(colvars PRIVATE ${LAMMPS_LIB_SOURCE_DIR}/colvars/lepton/include)
|
||||||
|
target_include_directories(colvars PUBLIC ${LAMMPS_LIB_SOURCE_DIR}/colvars)
|
||||||
|
else()
|
||||||
|
target_include_directories(${PKG_LIB} PUBLIC ${LAMMPS_LIB_SOURCE_DIR}/${PKG_LIB})
|
||||||
|
endif()
|
||||||
endif()
|
endif()
|
||||||
endforeach()
|
endforeach()
|
||||||
|
|
||||||
|
if(ENABLE_USER-AWPMD)
|
||||||
|
target_link_libraries(awpmd ${LAPACK_LIBRARIES})
|
||||||
|
endif()
|
||||||
|
|
||||||
|
if(ENABLE_USER-ATC)
|
||||||
|
target_link_libraries(atc ${LAPACK_LIBRARIES})
|
||||||
|
endif()
|
||||||
|
|
||||||
|
if(ENABLE_USER-H5MD)
|
||||||
|
find_package(HDF5 REQUIRED)
|
||||||
|
target_link_libraries(h5md ${HDF5_LIBRARIES})
|
||||||
|
target_include_directories(h5md PRIVATE ${HDF5_INCLUDE_DIRS})
|
||||||
|
endif()
|
||||||
|
|
||||||
|
if(ENABLE_MEAM AND FC_HAS_NO_SECOND_UNDERSCORE)
|
||||||
|
foreach(FSRC ${meam_SOURCES})
|
||||||
|
string(REGEX REPLACE "^.*\\." "" FEXT "${FSRC}")
|
||||||
|
list(FIND CMAKE_Fortran_SOURCE_FILE_EXTENSIONS "${FEXT}" FINDEX)
|
||||||
|
if(FINDEX GREATER -1)
|
||||||
|
set_property(SOURCE ${FSRC} APPEND PROPERTY COMPILE_FLAGS "-fno-second-underscore")
|
||||||
|
endif()
|
||||||
|
endforeach()
|
||||||
|
endif()
|
||||||
|
|
||||||
|
if(ENABLE_REAX AND FC_HAS_NO_SECOND_UNDERSCORE)
|
||||||
|
target_compile_options(reax PRIVATE -fno-second-underscore)
|
||||||
|
endif()
|
||||||
|
|
||||||
|
|
||||||
######################################################################
|
######################################################################
|
||||||
# packages which selectively include variants based on enabled styles
|
# packages which selectively include variants based on enabled styles
|
||||||
# e.g. accelerator packages
|
# e.g. accelerator packages
|
||||||
@ -401,6 +476,8 @@ if(ENABLE_KOKKOS)
|
|||||||
${KOKKOS_PKG_SOURCES_DIR}/neigh_list_kokkos.cpp
|
${KOKKOS_PKG_SOURCES_DIR}/neigh_list_kokkos.cpp
|
||||||
${KOKKOS_PKG_SOURCES_DIR}/neigh_bond_kokkos.cpp
|
${KOKKOS_PKG_SOURCES_DIR}/neigh_bond_kokkos.cpp
|
||||||
${KOKKOS_PKG_SOURCES_DIR}/fix_nh_kokkos.cpp
|
${KOKKOS_PKG_SOURCES_DIR}/fix_nh_kokkos.cpp
|
||||||
|
${KOKKOS_PKG_SOURCES_DIR}/nbin_kokkos.cpp
|
||||||
|
${KOKKOS_PKG_SOURCES_DIR}/npair_kokkos.cpp
|
||||||
${KOKKOS_PKG_SOURCES_DIR}/domain_kokkos.cpp
|
${KOKKOS_PKG_SOURCES_DIR}/domain_kokkos.cpp
|
||||||
${KOKKOS_PKG_SOURCES_DIR}/modify_kokkos.cpp)
|
${KOKKOS_PKG_SOURCES_DIR}/modify_kokkos.cpp)
|
||||||
set_property(GLOBAL PROPERTY "KOKKOS_PKG_SOURCES" "${KOKKOS_PKG_SOURCES}")
|
set_property(GLOBAL PROPERTY "KOKKOS_PKG_SOURCES" "${KOKKOS_PKG_SOURCES}")
|
||||||
@ -408,6 +485,17 @@ if(ENABLE_KOKKOS)
|
|||||||
# detects styles which have KOKKOS version
|
# detects styles which have KOKKOS version
|
||||||
RegisterStylesExt(${KOKKOS_PKG_SOURCES_DIR} kokkos KOKKOS_PKG_SOURCES)
|
RegisterStylesExt(${KOKKOS_PKG_SOURCES_DIR} kokkos KOKKOS_PKG_SOURCES)
|
||||||
|
|
||||||
|
# register kokkos-only styles
|
||||||
|
RegisterNBinStyle(${KOKKOS_PKG_SOURCES_DIR}/nbin_kokkos.h)
|
||||||
|
RegisterNPairStyle(${KOKKOS_PKG_SOURCES_DIR}/npair_kokkos.h)
|
||||||
|
|
||||||
|
if(ENABLE_USER-DPD)
|
||||||
|
get_property(KOKKOS_PKG_SOURCES GLOBAL PROPERTY KOKKOS_PKG_SOURCES)
|
||||||
|
list(APPEND KOKKOS_PKG_SOURCES ${KOKKOS_PKG_SOURCES_DIR}/npair_ssa_kokkos.cpp)
|
||||||
|
RegisterNPairStyle(${KOKKOS_PKG_SOURCES_DIR}/npair_ssa_kokkos.h)
|
||||||
|
set_property(GLOBAL PROPERTY "KOKKOS_PKG_SOURCES" "${KOKKOS_PKG_SOURCES}")
|
||||||
|
endif()
|
||||||
|
|
||||||
get_property(KOKKOS_PKG_SOURCES GLOBAL PROPERTY KOKKOS_PKG_SOURCES)
|
get_property(KOKKOS_PKG_SOURCES GLOBAL PROPERTY KOKKOS_PKG_SOURCES)
|
||||||
|
|
||||||
list(APPEND LIB_SOURCES ${KOKKOS_PKG_SOURCES})
|
list(APPEND LIB_SOURCES ${KOKKOS_PKG_SOURCES})
|
||||||
@ -453,62 +541,130 @@ if(ENABLE_USER-INTEL)
|
|||||||
endif()
|
endif()
|
||||||
|
|
||||||
if(ENABLE_GPU)
|
if(ENABLE_GPU)
|
||||||
find_package(CUDA REQUIRED)
|
|
||||||
find_program(BIN2C bin2c)
|
|
||||||
if(NOT BIN2C)
|
|
||||||
message(FATAL_ERROR "Couldn't find bin2c, use -DBIN2C helping cmake to find it.")
|
|
||||||
endif()
|
|
||||||
include_directories(${CUDA_INCLUDE_DIRS})
|
|
||||||
list(APPEND LAMMPS_LINK_LIBS ${CUDA_LIBRARIES} ${CUDA_CUDA_LIBRARY})
|
|
||||||
set(GPU_PREC "SINGLE_DOUBLE" CACHE STRING "Lammps gpu precision size")
|
|
||||||
set_property(CACHE GPU_PREC PROPERTY STRINGS SINGLE_DOUBLE SINGLE_SINGLE DOUBLE_DOUBLE)
|
|
||||||
add_definitions(-D_${GPU_PREC})
|
|
||||||
add_definitions(-DNV_KERNEL -DUCL_CUDADR)
|
|
||||||
option(CUDPP_OPT "Enable CUDPP_OPT" ON)
|
|
||||||
|
|
||||||
set(GPU_SOURCES_DIR ${LAMMPS_SOURCE_DIR}/GPU)
|
set(GPU_SOURCES_DIR ${LAMMPS_SOURCE_DIR}/GPU)
|
||||||
set(GPU_SOURCES ${GPU_SOURCES_DIR}/gpu_extra.h)
|
set(GPU_SOURCES ${GPU_SOURCES_DIR}/gpu_extra.h
|
||||||
|
${GPU_SOURCES_DIR}/fix_gpu.h
|
||||||
|
${GPU_SOURCES_DIR}/fix_gpu.cpp)
|
||||||
|
|
||||||
|
set(GPU_API "OpenCL" CACHE STRING "API used by GPU package")
|
||||||
|
set_property(CACHE GPU_API PROPERTY STRINGS OpenCL CUDA)
|
||||||
|
|
||||||
|
set(GPU_PREC "SINGLE_DOUBLE" CACHE STRING "LAMMPS GPU precision size")
|
||||||
|
set_property(CACHE GPU_PREC PROPERTY STRINGS SINGLE_DOUBLE SINGLE_SINGLE DOUBLE_DOUBLE)
|
||||||
|
|
||||||
|
file(GLOB GPU_LIB_SOURCES ${LAMMPS_LIB_SOURCE_DIR}/gpu/*.cpp)
|
||||||
|
file(MAKE_DIRECTORY ${LAMMPS_LIB_BINARY_DIR}/gpu)
|
||||||
|
|
||||||
|
if(GPU_API STREQUAL "CUDA")
|
||||||
|
find_package(CUDA REQUIRED)
|
||||||
|
find_program(BIN2C bin2c)
|
||||||
|
if(NOT BIN2C)
|
||||||
|
message(FATAL_ERROR "Couldn't find bin2c, use -DBIN2C helping cmake to find it.")
|
||||||
|
endif()
|
||||||
|
option(CUDPP_OPT "Enable CUDPP_OPT" ON)
|
||||||
|
|
||||||
|
set(GPU_ARCH "sm_30" CACHE STRING "LAMMPS GPU CUDA SM architecture")
|
||||||
|
set_property(CACHE GPU_ARCH PROPERTY STRINGS sm_10 sm_20 sm_30 sm_60)
|
||||||
|
|
||||||
|
file(GLOB GPU_LIB_CU ${LAMMPS_LIB_SOURCE_DIR}/gpu/*.cu ${CMAKE_CURRENT_SOURCE_DIR}/gpu/*.cu)
|
||||||
|
list(REMOVE_ITEM GPU_LIB_CU ${LAMMPS_LIB_SOURCE_DIR}/gpu/lal_pppm.cu)
|
||||||
|
|
||||||
|
cuda_include_directories(${LAMMPS_LIB_SOURCE_DIR}/gpu ${LAMMPS_LIB_BINARY_DIR}/gpu)
|
||||||
|
|
||||||
|
if(CUDPP_OPT)
|
||||||
|
cuda_include_directories(${LAMMPS_LIB_SOURCE_DIR}/gpu/cudpp_mini)
|
||||||
|
file(GLOB GPU_LIB_CUDPP_SOURCES ${LAMMPS_LIB_SOURCE_DIR}/gpu/cudpp_mini/*.cpp)
|
||||||
|
file(GLOB GPU_LIB_CUDPP_CU ${LAMMPS_LIB_SOURCE_DIR}/gpu/cudpp_mini/*.cu)
|
||||||
|
endif()
|
||||||
|
|
||||||
|
cuda_compile_cubin(GPU_GEN_OBJS ${GPU_LIB_CU} OPTIONS
|
||||||
|
-DUNIX -O3 -Xptxas -v --use_fast_math -DNV_KERNEL -DUCL_CUDADR -arch=${GPU_ARCH} -D_${GPU_PREC})
|
||||||
|
|
||||||
|
cuda_compile(GPU_OBJS ${GPU_LIB_CUDPP_CU} OPTIONS $<$<BOOL:${BUILD_SHARED_LIBS}>:-Xcompiler=-fPIC>
|
||||||
|
-DUNIX -O3 -Xptxas -v --use_fast_math -DUCL_CUDADR -arch=${GPU_ARCH} -D_${GPU_PREC})
|
||||||
|
|
||||||
|
foreach(CU_OBJ ${GPU_GEN_OBJS})
|
||||||
|
get_filename_component(CU_NAME ${CU_OBJ} NAME_WE)
|
||||||
|
string(REGEX REPLACE "^.*_lal_" "" CU_NAME "${CU_NAME}")
|
||||||
|
add_custom_command(OUTPUT ${LAMMPS_LIB_BINARY_DIR}/gpu/${CU_NAME}_cubin.h
|
||||||
|
COMMAND ${BIN2C} -c -n ${CU_NAME} ${CU_OBJ} > ${LAMMPS_LIB_BINARY_DIR}/gpu/${CU_NAME}_cubin.h
|
||||||
|
DEPENDS ${CU_OBJ}
|
||||||
|
COMMENT "Generating ${CU_NAME}_cubin.h")
|
||||||
|
list(APPEND GPU_LIB_SOURCES ${LAMMPS_LIB_BINARY_DIR}/gpu/${CU_NAME}_cubin.h)
|
||||||
|
endforeach()
|
||||||
|
set_directory_properties(PROPERTIES ADDITIONAL_MAKE_CLEAN_FILES "${LAMMPS_LIB_BINARY_DIR}/gpu/*_cubin.h")
|
||||||
|
|
||||||
|
|
||||||
|
add_library(gpu STATIC ${GPU_LIB_SOURCES} ${GPU_LIB_CUDPP_SOURCES} ${GPU_OBJS})
|
||||||
|
target_link_libraries(gpu ${CUDA_LIBRARIES} ${CUDA_CUDA_LIBRARY})
|
||||||
|
target_include_directories(gpu PRIVATE ${LAMMPS_LIB_BINARY_DIR}/gpu ${CUDA_INCLUDE_DIRS})
|
||||||
|
target_compile_definitions(gpu PRIVATE -D_${GPU_PREC} -DMPI_GERYON -DUCL_NO_EXIT)
|
||||||
|
if(CUDPP_OPT)
|
||||||
|
target_include_directories(gpu PRIVATE ${LAMMPS_LIB_SOURCE_DIR}/gpu/cudpp_mini)
|
||||||
|
target_compile_definitions(gpu PRIVATE -DUSE_CUDPP)
|
||||||
|
endif()
|
||||||
|
|
||||||
|
list(APPEND LAMMPS_LINK_LIBS gpu)
|
||||||
|
|
||||||
|
add_executable(nvc_get_devices ${LAMMPS_LIB_SOURCE_DIR}/gpu/geryon/ucl_get_devices.cpp)
|
||||||
|
target_compile_definitions(nvc_get_devices PRIVATE -DUCL_CUDADR)
|
||||||
|
target_link_libraries(nvc_get_devices PRIVATE ${CUDA_LIBRARIES} ${CUDA_CUDA_LIBRARY})
|
||||||
|
target_include_directories(nvc_get_devices PRIVATE ${CUDA_INCLUDE_DIRS})
|
||||||
|
|
||||||
|
|
||||||
|
elseif(GPU_API STREQUAL "OpenCL")
|
||||||
|
find_package(OpenCL REQUIRED)
|
||||||
|
set(OCL_TUNE "GENERIC" CACHE STRING "OpenCL Device Tuning")
|
||||||
|
set_property(CACHE OCL_TUNE PROPERTY STRINGS INTEL FERMI KEPLER CYPRESS GENERIC)
|
||||||
|
|
||||||
|
include(OpenCLUtils)
|
||||||
|
set(OCL_COMMON_HEADERS ${LAMMPS_LIB_SOURCE_DIR}/gpu/lal_preprocessor.h ${LAMMPS_LIB_SOURCE_DIR}/gpu/lal_aux_fun1.h)
|
||||||
|
|
||||||
|
file(GLOB GPU_LIB_CU ${LAMMPS_LIB_SOURCE_DIR}/gpu/*.cu)
|
||||||
|
list(REMOVE_ITEM GPU_LIB_CU ${LAMMPS_LIB_SOURCE_DIR}/gpu/lal_gayberne.cu ${LAMMPS_LIB_SOURCE_DIR}/gpu/lal_gayberne_lj.cu)
|
||||||
|
|
||||||
|
foreach(GPU_KERNEL ${GPU_LIB_CU})
|
||||||
|
get_filename_component(basename ${GPU_KERNEL} NAME_WE)
|
||||||
|
string(SUBSTRING ${basename} 4 -1 KERNEL_NAME)
|
||||||
|
GenerateOpenCLHeader(${KERNEL_NAME} ${CMAKE_CURRENT_BINARY_DIR}/gpu/${KERNEL_NAME}_cl.h ${OCL_COMMON_HEADERS} ${GPU_KERNEL})
|
||||||
|
list(APPEND GPU_LIB_SOURCES ${CMAKE_CURRENT_BINARY_DIR}/gpu/${KERNEL_NAME}_cl.h)
|
||||||
|
endforeach()
|
||||||
|
|
||||||
|
GenerateOpenCLHeader(gayberne ${CMAKE_CURRENT_BINARY_DIR}/gpu/gayberne_cl.h ${OCL_COMMON_HEADERS} ${LAMMPS_LIB_SOURCE_DIR}/gpu/lal_ellipsoid_extra.h ${LAMMPS_LIB_SOURCE_DIR}/gpu/lal_gayberne.cu)
|
||||||
|
GenerateOpenCLHeader(gayberne_lj ${CMAKE_CURRENT_BINARY_DIR}/gpu/gayberne_lj_cl.h ${OCL_COMMON_HEADERS} ${LAMMPS_LIB_SOURCE_DIR}/gpu/lal_ellipsoid_extra.h ${LAMMPS_LIB_SOURCE_DIR}/gpu/lal_gayberne_lj.cu)
|
||||||
|
list(APPEND GPU_LIB_SOURCES ${CMAKE_CURRENT_BINARY_DIR}/gpu/gayberne_cl.h ${CMAKE_CURRENT_BINARY_DIR}/gpu/gayberne_lj_cl.h)
|
||||||
|
|
||||||
|
add_library(gpu STATIC ${GPU_LIB_SOURCES})
|
||||||
|
target_link_libraries(gpu ${OpenCL_LIBRARIES})
|
||||||
|
target_include_directories(gpu PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/gpu ${OpenCL_INCLUDE_DIRS})
|
||||||
|
target_compile_definitions(gpu PRIVATE -D_${GPU_PREC} -DMPI_GERYON -DUCL_NO_EXIT)
|
||||||
|
target_compile_definitions(gpu PRIVATE -DUSE_OPENCL)
|
||||||
|
|
||||||
|
list(APPEND LAMMPS_LINK_LIBS gpu)
|
||||||
|
|
||||||
|
add_executable(ocl_get_devices ${LAMMPS_LIB_SOURCE_DIR}/gpu/geryon/ucl_get_devices.cpp)
|
||||||
|
target_compile_definitions(ocl_get_devices PRIVATE -DUCL_OPENCL)
|
||||||
|
target_link_libraries(ocl_get_devices PRIVATE ${OpenCL_LIBRARIES})
|
||||||
|
target_include_directories(ocl_get_devices PRIVATE ${OpenCL_INCLUDE_DIRS})
|
||||||
|
endif()
|
||||||
|
|
||||||
|
# GPU package
|
||||||
|
FindStyleHeaders(${GPU_SOURCES_DIR} FIX_CLASS fix_ FIX)
|
||||||
|
|
||||||
set_property(GLOBAL PROPERTY "GPU_SOURCES" "${GPU_SOURCES}")
|
set_property(GLOBAL PROPERTY "GPU_SOURCES" "${GPU_SOURCES}")
|
||||||
|
|
||||||
# detects styles which have GPU version
|
# detects styles which have GPU version
|
||||||
RegisterStylesExt(${GPU_SOURCES_DIR} opt GPU_SOURCES)
|
RegisterStylesExt(${GPU_SOURCES_DIR} gpu GPU_SOURCES)
|
||||||
|
|
||||||
get_property(GPU_SOURCES GLOBAL PROPERTY GPU_SOURCES)
|
get_property(GPU_SOURCES GLOBAL PROPERTY GPU_SOURCES)
|
||||||
|
|
||||||
file(GLOB GPU_LIB_SOURCES ${LAMMPS_LIB_SOURCE_DIR}/gpu/*.cpp)
|
list(APPEND LIB_SOURCES ${GPU_SOURCES})
|
||||||
file(GLOB GPU_LIB_CU ${LAMMPS_LIB_SOURCE_DIR}/gpu/*.cu ${CMAKE_SOURCE_DIR}/gpu/*.cu)
|
include_directories(${GPU_SOURCES_DIR})
|
||||||
file(GLOB_RECURSE GPU_NOT_LIB_CU ${LAMMPS_LIB_SOURCE_DIR}/gpu/lal_pppm.cu)
|
|
||||||
list(REMOVE_ITEM GPU_LIB_CU ${GPU_NOT_LIB_CU})
|
|
||||||
include_directories(${GPU_SOURCES_DIR} ${LAMMPS_LIB_SOURCE_DIR}/gpu ${LAMMPS_LIB_BINARY_DIR}/gpu)
|
|
||||||
if(CUDPP_OPT)
|
|
||||||
include_directories(${LAMMPS_LIB_SOURCE_DIR}/gpu/cudpp_mini)
|
|
||||||
add_definitions(-DCUDPP_OPT)
|
|
||||||
file(GLOB GPU_LIB_CUDPP_SOURCES ${LAMMPS_LIB_SOURCE_DIR}/gpu/cudpp_mini/*.cpp)
|
|
||||||
file(GLOB GPU_LIB_CUDPP_CU ${LAMMPS_LIB_SOURCE_DIR}/gpu/cudpp_mini/*.cu)
|
|
||||||
endif()
|
|
||||||
cuda_compile(GPU_OBJS ${GPU_LIB_CU} ${GPU_LIB_CUDPP_CU} OPTIONS $<$<BOOL:${BUILD_SHARED_LIBS}>:-Xcompiler=-fPIC>)
|
|
||||||
file(MAKE_DIRECTORY ${LAMMPS_LIB_BINARY_DIR}/gpu)
|
|
||||||
foreach(CU_OBJ ${GPU_OBJS})
|
|
||||||
get_filename_component(CU_NAME ${CU_OBJ} NAME_WE)
|
|
||||||
string(REGEX REPLACE "^.*_lal_" "" CU_NAME "${CU_NAME}")
|
|
||||||
add_custom_command(OUTPUT ${LAMMPS_LIB_BINARY_DIR}/gpu/${CU_NAME}_cubin.h
|
|
||||||
COMMAND ${BIN2C} -c -n ${CU_NAME} ${CU_OBJ} > ${LAMMPS_LIB_BINARY_DIR}/gpu/${CU_NAME}_cubin.h
|
|
||||||
DEPENDS ${CU_OBJ}
|
|
||||||
COMMENT "Generating ${CU_NAME}_cubin.h")
|
|
||||||
list(APPEND LIB_SOURCES ${LAMMPS_LIB_BINARY_DIR}/gpu/${CU_NAME}_cubin.h)
|
|
||||||
if(${CU_NAME} STREQUAL "pppm_d") #pppm_d doesn't get linked into the lib
|
|
||||||
set(CU_FORBIDDEN_OBJ "${CU_OBJ}")
|
|
||||||
endif()
|
|
||||||
endforeach()
|
|
||||||
list(REMOVE_ITEM GPU_OBJS "${CU_FORBIDDEN_OBJ}")
|
|
||||||
list(APPEND LIB_SOURCES ${GPU_SOURCES} ${GPU_LIB_SOURCES} ${GPU_LIB_CUDPP_SOURCES} ${GPU_OBJS})
|
|
||||||
set_directory_properties(PROPERTIES ADDITIONAL_MAKE_CLEAN_FILES "${LAMMPS_LIB_BINARY_DIR}/gpu/*_cubin.h")
|
|
||||||
endif()
|
endif()
|
||||||
|
|
||||||
######################################################
|
######################################################
|
||||||
# Generate style headers based on global list of
|
# Generate style headers based on global list of
|
||||||
# styles registered during package selection
|
# styles registered during package selection
|
||||||
######################################################
|
######################################################
|
||||||
set(LAMMPS_STYLE_HEADERS_DIR ${CMAKE_CURRENT_BINARY_DIR}/styles)
|
set(LAMMPS_STYLE_HEADERS_DIR ${CMAKE_CURRENT_BINARY_DIR}/styles)
|
||||||
|
|
||||||
@ -522,19 +678,24 @@ include_directories(${LAMMPS_STYLE_HEADERS_DIR})
|
|||||||
############################################
|
############################################
|
||||||
add_library(lammps ${LIB_SOURCES})
|
add_library(lammps ${LIB_SOURCES})
|
||||||
target_link_libraries(lammps ${LAMMPS_LINK_LIBS})
|
target_link_libraries(lammps ${LAMMPS_LINK_LIBS})
|
||||||
set_target_properties(lammps PROPERTIES SOVERSION ${SOVERSION})
|
if(LAMMPS_DEPS)
|
||||||
if(INSTALL_LIB)
|
add_dependencies(lammps ${LAMMPS_DEPS})
|
||||||
|
endif()
|
||||||
|
set_target_properties(lammps PROPERTIES OUTPUT_NAME lammps${LAMMPS_MACHINE})
|
||||||
|
if(BUILD_SHARED_LIBS)
|
||||||
|
set_target_properties(lammps PROPERTIES SOVERSION ${SOVERSION})
|
||||||
install(TARGETS lammps LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR} ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR})
|
install(TARGETS lammps LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR} ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR})
|
||||||
install(FILES ${LAMMPS_SOURCE_DIR}/lammps.h DESTINATION ${CMAKE_INSTALL_INCLUDEDIR})
|
install(FILES ${LAMMPS_SOURCE_DIR}/library.h DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}/lammps)
|
||||||
elseif(BUILD_SHARED_LIBS)
|
configure_file(pkgconfig/liblammps.pc.in ${CMAKE_CURRENT_BINARY_DIR}/liblammps${LAMMPS_MACHINE}.pc @ONLY)
|
||||||
message(FATAL_ERROR "Shared library has to be installed, use -DINSTALL_LIB=ON to install lammps with a library")
|
install(FILES ${CMAKE_CURRENT_BINARY_DIR}/liblammps${LAMMPS_MACHINE}.pc DESTINATION ${CMAKE_INSTALL_LIBDIR}/pkgconfig)
|
||||||
endif()
|
endif()
|
||||||
|
|
||||||
add_executable(lmp ${LMP_SOURCES})
|
add_executable(lmp ${LMP_SOURCES})
|
||||||
target_link_libraries(lmp lammps)
|
target_link_libraries(lmp lammps)
|
||||||
|
set_target_properties(lmp PROPERTIES OUTPUT_NAME lmp${LAMMPS_MACHINE})
|
||||||
install(TARGETS lmp DESTINATION ${CMAKE_INSTALL_BINDIR})
|
install(TARGETS lmp DESTINATION ${CMAKE_INSTALL_BINDIR})
|
||||||
if(ENABLE_TESTING)
|
if(ENABLE_TESTING)
|
||||||
add_test(ShowHelp ${CMAKE_CURRENT_BINARY_DIR}/lmp -help)
|
add_test(ShowHelp lmp${LAMMPS_MACHINE} -help)
|
||||||
endif()
|
endif()
|
||||||
|
|
||||||
##################################
|
##################################
|
||||||
@ -545,3 +706,27 @@ foreach(PKG ${DEFAULT_PACKAGES} ${OTHER_PACKAGES} ${ACCEL_PACKAGES})
|
|||||||
message(STATUS "Building package: ${PKG}")
|
message(STATUS "Building package: ${PKG}")
|
||||||
endif()
|
endif()
|
||||||
endforeach()
|
endforeach()
|
||||||
|
|
||||||
|
string(TOUPPER "${CMAKE_BUILD_TYPE}" BTYPE)
|
||||||
|
message(STATUS "<<< Build configuration >>>
|
||||||
|
Build type ${CMAKE_BUILD_TYPE}
|
||||||
|
Install path ${CMAKE_INSTALL_PREFIX}
|
||||||
|
Compilers and Flags:
|
||||||
|
C++ Compiler ${CMAKE_CXX_COMPILER}
|
||||||
|
Type ${CMAKE_CXX_COMPILER_ID}
|
||||||
|
C++ Flags ${CMAKE_CXX_FLAGS} ${CMAKE_CXX_FLAGS_${BTYPE}}")
|
||||||
|
get_property(LANGUAGES GLOBAL PROPERTY ENABLED_LANGUAGES)
|
||||||
|
if(LANGUAGES MATCHES ".*Fortran.*")
|
||||||
|
message(STATUS "Fortran Compiler ${CMAKE_Fortran_COMPILER}
|
||||||
|
Type ${CMAKE_Fortran_COMPILER_ID}
|
||||||
|
Fortran Flags ${CMAKE_Fortran_FLAGS} ${CMAKE_Fortran_FLAGS_${BTYPE}}")
|
||||||
|
endif()
|
||||||
|
message(STATUS "Linker flags:
|
||||||
|
Executable ${CMAKE_EXE_LINKER_FLAGS}")
|
||||||
|
if(BUILD_SHARED_LIBS)
|
||||||
|
message(STATUS "Shared libries ${CMAKE_SHARED_LINKER_FLAGS}")
|
||||||
|
else()
|
||||||
|
message(STATUS "Static libries ${CMAKE_STATIC_LINKER_FLAGS}")
|
||||||
|
endif()
|
||||||
|
message(STATUS "Link libraries: ${LAMMPS_LINK_LIBS}")
|
||||||
|
|
||||||
|
|||||||
18
cmake/Modules/FindLATTE.cmake
Normal file
@ -0,0 +1,18 @@
|
|||||||
|
# - Find latte
|
||||||
|
# Find the native LATTE libraries.
|
||||||
|
#
|
||||||
|
# LATTE_LIBRARIES - List of libraries when using latte.
|
||||||
|
# LATTE_FOUND - True if latte found.
|
||||||
|
#
|
||||||
|
|
||||||
|
find_library(LATTE_LIBRARY NAMES latte)
|
||||||
|
|
||||||
|
set(LATTE_LIBRARIES ${LATTE_LIBRARY})
|
||||||
|
|
||||||
|
include(FindPackageHandleStandardArgs)
|
||||||
|
# handle the QUIETLY and REQUIRED arguments and set LATTE_FOUND to TRUE
|
||||||
|
# if all listed variables are TRUE
|
||||||
|
|
||||||
|
find_package_handle_standard_args(LATTE DEFAULT_MSG LATTE_LIBRARY)
|
||||||
|
|
||||||
|
mark_as_advanced(LATTE_LIBRARY)
|
||||||
18
cmake/Modules/OpenCLUtils.cmake
Normal file
@ -0,0 +1,18 @@
|
|||||||
|
function(GenerateOpenCLHeader varname outfile files)
|
||||||
|
message("Creating ${outfile}...")
|
||||||
|
file(WRITE ${outfile} "const char * ${varname} = \n")
|
||||||
|
math(EXPR ARG_END "${ARGC}-1")
|
||||||
|
|
||||||
|
foreach(IDX RANGE 2 ${ARG_END})
|
||||||
|
list(GET ARGV ${IDX} filename)
|
||||||
|
file(READ ${filename} content)
|
||||||
|
string(REGEX REPLACE "\\s*//[^\n]*\n" "" content "${content}")
|
||||||
|
string(REGEX REPLACE "\\\\" "\\\\\\\\" content "${content}")
|
||||||
|
string(REGEX REPLACE "\"" "\\\\\"" content "${content}")
|
||||||
|
string(REGEX REPLACE "([^\n]+)\n" "\"\\1\\\\n\"\n" content "${content}")
|
||||||
|
string(REGEX REPLACE "\n+" "\n" content "${content}")
|
||||||
|
file(APPEND ${outfile} "${content}")
|
||||||
|
endforeach()
|
||||||
|
|
||||||
|
file(APPEND ${outfile} ";\n")
|
||||||
|
endfunction(GenerateOpenCLHeader)
|
||||||
@ -11,6 +11,12 @@ function(FindStyleHeaders path style_class file_pattern headers)
|
|||||||
set_property(GLOBAL PROPERTY ${headers} "${hlist}")
|
set_property(GLOBAL PROPERTY ${headers} "${hlist}")
|
||||||
endfunction(FindStyleHeaders)
|
endfunction(FindStyleHeaders)
|
||||||
|
|
||||||
|
function(AddStyleHeader path headers)
|
||||||
|
get_property(hlist GLOBAL PROPERTY ${headers})
|
||||||
|
list(APPEND hlist ${path})
|
||||||
|
set_property(GLOBAL PROPERTY ${headers} "${hlist}")
|
||||||
|
endfunction(AddStyleHeader)
|
||||||
|
|
||||||
function(FindStyleHeadersExt path style_class extension headers sources)
|
function(FindStyleHeadersExt path style_class extension headers sources)
|
||||||
get_property(hlist GLOBAL PROPERTY ${headers})
|
get_property(hlist GLOBAL PROPERTY ${headers})
|
||||||
get_property(slist GLOBAL PROPERTY ${sources})
|
get_property(slist GLOBAL PROPERTY ${sources})
|
||||||
@ -62,6 +68,22 @@ function(GenerateStyleHeader path property style)
|
|||||||
CreateStyleHeader("${path}" "style_${style}.h" ${files})
|
CreateStyleHeader("${path}" "style_${style}.h" ${files})
|
||||||
endfunction(GenerateStyleHeader)
|
endfunction(GenerateStyleHeader)
|
||||||
|
|
||||||
|
function(RegisterNBinStyles search_path)
|
||||||
|
FindStyleHeaders(${search_path} NBIN_CLASS nbin_ NBIN ) # nbin ) # neighbor
|
||||||
|
endfunction(RegisterNBinStyles)
|
||||||
|
|
||||||
|
function(RegisterNPairStyles search_path)
|
||||||
|
FindStyleHeaders(${search_path} NPAIR_CLASS npair_ NPAIR ) # npair ) # neighbor
|
||||||
|
endfunction(RegisterNPairStyles)
|
||||||
|
|
||||||
|
function(RegisterNBinStyle path)
|
||||||
|
AddStyleHeader(${path} NBIN)
|
||||||
|
endfunction(RegisterNBinStyle)
|
||||||
|
|
||||||
|
function(RegisterNPairStyle path)
|
||||||
|
AddStyleHeader(${path} NPAIR)
|
||||||
|
endfunction(RegisterNPairStyle)
|
||||||
|
|
||||||
function(RegisterStyles search_path)
|
function(RegisterStyles search_path)
|
||||||
FindStyleHeaders(${search_path} ANGLE_CLASS angle_ ANGLE ) # angle ) # force
|
FindStyleHeaders(${search_path} ANGLE_CLASS angle_ ANGLE ) # angle ) # force
|
||||||
FindStyleHeaders(${search_path} ATOM_CLASS atom_vec_ ATOM_VEC ) # atom ) # atom atom_vec_hybrid
|
FindStyleHeaders(${search_path} ATOM_CLASS atom_vec_ ATOM_VEC ) # atom ) # atom atom_vec_hybrid
|
||||||
@ -85,6 +107,35 @@ function(RegisterStyles search_path)
|
|||||||
FindStyleHeaders(${search_path} REGION_CLASS region_ REGION ) # region ) # domain
|
FindStyleHeaders(${search_path} REGION_CLASS region_ REGION ) # region ) # domain
|
||||||
endfunction(RegisterStyles)
|
endfunction(RegisterStyles)
|
||||||
|
|
||||||
|
function(RemovePackageHeader headers pkg_header)
|
||||||
|
get_property(hlist GLOBAL PROPERTY ${headers})
|
||||||
|
list(REMOVE_ITEM hlist ${pkg_header})
|
||||||
|
set_property(GLOBAL PROPERTY ${headers} "${hlist}")
|
||||||
|
endfunction(RemovePackageHeader)
|
||||||
|
|
||||||
|
function(DetectAndRemovePackageHeader fname)
|
||||||
|
RemovePackageHeader(ANGLE ${fname})
|
||||||
|
RemovePackageHeader(ATOM_VEC ${fname})
|
||||||
|
RemovePackageHeader(BODY ${fname})
|
||||||
|
RemovePackageHeader(BOND ${fname})
|
||||||
|
RemovePackageHeader(COMMAND ${fname})
|
||||||
|
RemovePackageHeader(COMPUTE ${fname})
|
||||||
|
RemovePackageHeader(DIHEDRAL ${fname})
|
||||||
|
RemovePackageHeader(DUMP ${fname})
|
||||||
|
RemovePackageHeader(FIX ${fname})
|
||||||
|
RemovePackageHeader(IMPROPER ${fname})
|
||||||
|
RemovePackageHeader(INTEGRATE ${fname})
|
||||||
|
RemovePackageHeader(KSPACE ${fname})
|
||||||
|
RemovePackageHeader(MINIMIZE ${fname})
|
||||||
|
RemovePackageHeader(NBIN ${fname})
|
||||||
|
RemovePackageHeader(NPAIR ${fname})
|
||||||
|
RemovePackageHeader(NSTENCIL ${fname})
|
||||||
|
RemovePackageHeader(NTOPO ${fname})
|
||||||
|
RemovePackageHeader(PAIR ${fname})
|
||||||
|
RemovePackageHeader(READER ${fname})
|
||||||
|
RemovePackageHeader(REGION ${fname})
|
||||||
|
endfunction(DetectAndRemovePackageHeader)
|
||||||
|
|
||||||
function(RegisterStylesExt search_path extension sources)
|
function(RegisterStylesExt search_path extension sources)
|
||||||
FindStyleHeadersExt(${search_path} ANGLE_CLASS ${extension} ANGLE ${sources})
|
FindStyleHeadersExt(${search_path} ANGLE_CLASS ${extension} ANGLE ${sources})
|
||||||
FindStyleHeadersExt(${search_path} ATOM_CLASS ${extension} ATOM_VEC ${sources})
|
FindStyleHeadersExt(${search_path} ATOM_CLASS ${extension} ATOM_VEC ${sources})
|
||||||
|
|||||||
18
cmake/pkgconfig/liblammps.pc.in
Normal file
@ -0,0 +1,18 @@
|
|||||||
|
# pkg-config file for lammps
|
||||||
|
# https://people.freedesktop.org/~dbn/pkg-config-guide.html
|
||||||
|
# Usage: cc `pkg-config --cflags --libs liblammps` -o myapp myapp.c
|
||||||
|
# after you added @CMAKE_INSTALL_FULL_LIBDIR@/pkg-config to PKG_CONFIG_PATH,
|
||||||
|
# e.g. export PKG_CONFIG_PATH=@CMAKE_INSTALL_FULL_LIBDIR@/pkgconfig
|
||||||
|
|
||||||
|
prefix=@CMAKE_INSTALL_FULL_PREFIX@
|
||||||
|
libdir=@CMAKE_INSTALL_FULL_LIBDIR@
|
||||||
|
includedir=@CMAKE_INSTALL_FULL_INCLUDEDIR@
|
||||||
|
|
||||||
|
Name: liblammps@LAMMPS_MACHINE@
|
||||||
|
Description: Large-scale Atomic/Molecular Massively Parallel Simulator Library
|
||||||
|
URL: http://lammps.sandia.gov
|
||||||
|
Version:
|
||||||
|
Requires:
|
||||||
|
Libs: -L${libdir} -llammps@LAMMPS_MACHINE@
|
||||||
|
Libs.private: -lm
|
||||||
|
Cflags: -I${includedir} @LAMMPS_API_DEFINES@
|
||||||
@ -20,6 +20,7 @@ ifeq ($(shell which virtualenv >/dev/null 2>&1; echo $$?), 0)
|
|||||||
HAS_VIRTUALENV = YES
|
HAS_VIRTUALENV = YES
|
||||||
endif
|
endif
|
||||||
|
|
||||||
|
SPHINXEXTRA = -j $(shell $(PYTHON) -c 'import multiprocessing;print(multiprocessing.cpu_count())')
|
||||||
SOURCES=$(wildcard src/*.txt)
|
SOURCES=$(wildcard src/*.txt)
|
||||||
OBJECTS=$(SOURCES:src/%.txt=$(RSTDIR)/%.rst)
|
OBJECTS=$(SOURCES:src/%.txt=$(RSTDIR)/%.rst)
|
||||||
|
|
||||||
@ -55,7 +56,7 @@ html: $(OBJECTS) $(ANCHORCHECK)
|
|||||||
@(\
|
@(\
|
||||||
. $(VENV)/bin/activate ;\
|
. $(VENV)/bin/activate ;\
|
||||||
cp -r src/* $(RSTDIR)/ ;\
|
cp -r src/* $(RSTDIR)/ ;\
|
||||||
sphinx-build -j 8 -b html -c utils/sphinx-config -d $(BUILDDIR)/doctrees $(RSTDIR) html ;\
|
sphinx-build $(SPHINXEXTRA) -b html -c utils/sphinx-config -d $(BUILDDIR)/doctrees $(RSTDIR) html ;\
|
||||||
echo "############################################" ;\
|
echo "############################################" ;\
|
||||||
doc_anchor_check src/*.txt ;\
|
doc_anchor_check src/*.txt ;\
|
||||||
echo "############################################" ;\
|
echo "############################################" ;\
|
||||||
@ -91,7 +92,7 @@ epub: $(OBJECTS)
|
|||||||
@(\
|
@(\
|
||||||
. $(VENV)/bin/activate ;\
|
. $(VENV)/bin/activate ;\
|
||||||
cp -r src/* $(RSTDIR)/ ;\
|
cp -r src/* $(RSTDIR)/ ;\
|
||||||
sphinx-build -j 8 -b epub -c utils/sphinx-config -d $(BUILDDIR)/doctrees $(RSTDIR) epub ;\
|
sphinx-build $(SPHINXEXTRA) -b epub -c utils/sphinx-config -d $(BUILDDIR)/doctrees $(RSTDIR) epub ;\
|
||||||
deactivate ;\
|
deactivate ;\
|
||||||
)
|
)
|
||||||
@mv epub/LAMMPS.epub .
|
@mv epub/LAMMPS.epub .
|
||||||
@ -159,7 +160,7 @@ $(VENV):
|
|||||||
@( \
|
@( \
|
||||||
virtualenv -p $(PYTHON) $(VENV); \
|
virtualenv -p $(PYTHON) $(VENV); \
|
||||||
. $(VENV)/bin/activate; \
|
. $(VENV)/bin/activate; \
|
||||||
pip install Sphinx==1.5.6; \
|
pip install Sphinx; \
|
||||||
pip install sphinxcontrib-images; \
|
pip install sphinxcontrib-images; \
|
||||||
deactivate;\
|
deactivate;\
|
||||||
)
|
)
|
||||||
|
|||||||
BIN
doc/src/Eqs/angle_class2_p6.jpg
Normal file
|
After Width: | Height: | Size: 14 KiB |
BIN
doc/src/Eqs/angle_cosine_buck6d.jpg
Normal file
|
After Width: | Height: | Size: 5.2 KiB |
BIN
doc/src/Eqs/bond_gromos.jpg
Normal file
|
After Width: | Height: | Size: 2.1 KiB |
10
doc/src/Eqs/bond_gromos.tex
Normal file
@ -0,0 +1,10 @@
|
|||||||
|
\documentclass[12pt]{article}
|
||||||
|
\pagestyle{empty}
|
||||||
|
|
||||||
|
\begin{document}
|
||||||
|
|
||||||
|
$$
|
||||||
|
E = K (r^2 - r_0^2)^2
|
||||||
|
$$
|
||||||
|
|
||||||
|
\end{document}
|
||||||
BIN
doc/src/Eqs/fix_rhok.jpg
Normal file
|
After Width: | Height: | Size: 18 KiB |
11
doc/src/Eqs/fix_rhok.tex
Normal file
@ -0,0 +1,11 @@
|
|||||||
|
\documentclass[12pt]{article}
|
||||||
|
|
||||||
|
\begin{document}
|
||||||
|
|
||||||
|
\begin{eqnarray*}
|
||||||
|
U &=& \frac{1}{2} K (|\rho_{\vec{k}}| - a)^2 \\
|
||||||
|
\rho_{\vec{k}} &=& \sum_j^N \exp(-i\vec{k} \cdot \vec{r}_j )/\sqrt{N} \\
|
||||||
|
\vec{k} &=& (2\pi n_x /L_x , 2\pi n_y /L_y , 2\pi n_z/L_z )
|
||||||
|
\end{eqnarray*}
|
||||||
|
|
||||||
|
\end{document}
|
||||||
BIN
doc/src/Eqs/improper_inversion_harmonic.jpg
Normal file
|
After Width: | Height: | Size: 4.5 KiB |
BIN
doc/src/Eqs/pair_buck6d.jpg
Normal file
|
After Width: | Height: | Size: 6.9 KiB |
9
doc/src/Eqs/pair_buck6d.txt
Normal file
@ -0,0 +1,9 @@
|
|||||||
|
\documentclass[12pt]{article}
|
||||||
|
|
||||||
|
\begin{document}
|
||||||
|
|
||||||
|
\begin{eqnarray*}
|
||||||
|
E = A e^{-\kappa r} - \frac{C}{r^6} \cdot \frac{1}{1 + D r^{14}} \qquad r < r_c \\
|
||||||
|
\end{eqnarray*}
|
||||||
|
|
||||||
|
\end{document}
|
||||||
BIN
doc/src/Eqs/pair_coul_gauss.jpg
Normal file
|
After Width: | Height: | Size: 7.1 KiB |
BIN
doc/src/Eqs/pair_ufm.jpg
Normal file
|
After Width: | Height: | Size: 17 KiB |
14
doc/src/Eqs/pair_ufm.tex
Normal file
@ -0,0 +1,14 @@
|
|||||||
|
\documentclass[12pt]{article}
|
||||||
|
|
||||||
|
\begin{document}
|
||||||
|
|
||||||
|
$$
|
||||||
|
E = -\varepsilon\, \ln{\left[1-\exp{\left(-r^{2}/\sigma^{2}\right)}\right]} \qquad r < r_c
|
||||||
|
$$
|
||||||
|
|
||||||
|
$$
|
||||||
|
\varepsilon = p\,k_B\,T
|
||||||
|
$$
|
||||||
|
|
||||||
|
\end{document}
|
||||||
|
|
||||||
BIN
doc/src/JPG/uef_frames.jpg
Normal file
|
After Width: | Height: | Size: 12 KiB |
|
Before Width: | Height: | Size: 20 KiB After Width: | Height: | Size: 19 KiB |
@ -1,7 +1,7 @@
|
|||||||
<!-- HTML_ONLY -->
|
<!-- HTML_ONLY -->
|
||||||
<HEAD>
|
<HEAD>
|
||||||
<TITLE>LAMMPS Users Manual</TITLE>
|
<TITLE>LAMMPS Users Manual</TITLE>
|
||||||
<META NAME="docnumber" CONTENT="1 Sep 2017 version">
|
<META NAME="docnumber" CONTENT="5 Feb 2018 version">
|
||||||
<META NAME="author" CONTENT="http://lammps.sandia.gov - Sandia National Laboratories">
|
<META NAME="author" CONTENT="http://lammps.sandia.gov - Sandia National Laboratories">
|
||||||
<META NAME="copyright" CONTENT="Copyright (2003) Sandia Corporation. This software and manual is distributed under the GNU General Public License.">
|
<META NAME="copyright" CONTENT="Copyright (2003) Sandia Corporation. This software and manual is distributed under the GNU General Public License.">
|
||||||
</HEAD>
|
</HEAD>
|
||||||
@ -21,7 +21,7 @@
|
|||||||
<H1></H1>
|
<H1></H1>
|
||||||
|
|
||||||
LAMMPS Documentation :c,h3
|
LAMMPS Documentation :c,h3
|
||||||
1 Sep 2017 version :c,h4
|
5 Feb 2018 version :c,h4
|
||||||
|
|
||||||
Version info: :h4
|
Version info: :h4
|
||||||
|
|
||||||
|
|||||||
@ -532,7 +532,8 @@ package"_Section_start.html#start_3.
|
|||||||
"dump vtk"_dump_vtk.html,
|
"dump vtk"_dump_vtk.html,
|
||||||
"group2ndx"_group2ndx.html,
|
"group2ndx"_group2ndx.html,
|
||||||
"ndx2group"_group2ndx.html,
|
"ndx2group"_group2ndx.html,
|
||||||
"temper/grem"_temper_grem.html :tb(c=3,ea=c)
|
"temper/grem"_temper_grem.html,
|
||||||
|
"temper/npt"_temper_npt.html :tb(c=3,ea=c)
|
||||||
|
|
||||||
:line
|
:line
|
||||||
|
|
||||||
@ -579,6 +580,7 @@ USER-INTEL, k = KOKKOS, o = USER-OMP, t = OPT.
|
|||||||
"halt"_fix_halt.html,
|
"halt"_fix_halt.html,
|
||||||
"heat"_fix_heat.html,
|
"heat"_fix_heat.html,
|
||||||
"indent"_fix_indent.html,
|
"indent"_fix_indent.html,
|
||||||
|
"latte"_fix_latte.html,
|
||||||
"langevin (k)"_fix_langevin.html,
|
"langevin (k)"_fix_langevin.html,
|
||||||
"lineforce"_fix_lineforce.html,
|
"lineforce"_fix_lineforce.html,
|
||||||
"momentum (k)"_fix_momentum.html,
|
"momentum (k)"_fix_momentum.html,
|
||||||
@ -617,8 +619,9 @@ USER-INTEL, k = KOKKOS, o = USER-OMP, t = OPT.
|
|||||||
"pour"_fix_pour.html,
|
"pour"_fix_pour.html,
|
||||||
"press/berendsen"_fix_press_berendsen.html,
|
"press/berendsen"_fix_press_berendsen.html,
|
||||||
"print"_fix_print.html,
|
"print"_fix_print.html,
|
||||||
"property/atom"_fix_property_atom.html,
|
"property/atom (k)"_fix_property_atom.html,
|
||||||
"python"_fix_python.html,
|
"python/invoke"_fix_python_invoke.html,
|
||||||
|
"python/move"_fix_python_move.html,
|
||||||
"qeq/comb (o)"_fix_qeq_comb.html,
|
"qeq/comb (o)"_fix_qeq_comb.html,
|
||||||
"qeq/dynamic"_fix_qeq.html,
|
"qeq/dynamic"_fix_qeq.html,
|
||||||
"qeq/fire"_fix_qeq.html,
|
"qeq/fire"_fix_qeq.html,
|
||||||
@ -635,10 +638,10 @@ USER-INTEL, k = KOKKOS, o = USER-OMP, t = OPT.
|
|||||||
"rigid/nve (o)"_fix_rigid.html,
|
"rigid/nve (o)"_fix_rigid.html,
|
||||||
"rigid/nvt (o)"_fix_rigid.html,
|
"rigid/nvt (o)"_fix_rigid.html,
|
||||||
"rigid/small (o)"_fix_rigid.html,
|
"rigid/small (o)"_fix_rigid.html,
|
||||||
"rigid/small/nph (o)"_fix_rigid.html,
|
"rigid/small/nph"_fix_rigid.html,
|
||||||
"rigid/small/npt (o)"_fix_rigid.html,
|
"rigid/small/npt"_fix_rigid.html,
|
||||||
"rigid/small/nve (o)"_fix_rigid.html,
|
"rigid/small/nve"_fix_rigid.html,
|
||||||
"rigid/small/nvt (o)"_fix_rigid.html,
|
"rigid/small/nvt"_fix_rigid.html,
|
||||||
"setforce (k)"_fix_setforce.html,
|
"setforce (k)"_fix_setforce.html,
|
||||||
"shake"_fix_shake.html,
|
"shake"_fix_shake.html,
|
||||||
"spring"_fix_spring.html,
|
"spring"_fix_spring.html,
|
||||||
@ -666,7 +669,7 @@ USER-INTEL, k = KOKKOS, o = USER-OMP, t = OPT.
|
|||||||
"wall/harmonic"_fix_wall.html,
|
"wall/harmonic"_fix_wall.html,
|
||||||
"wall/lj1043"_fix_wall.html,
|
"wall/lj1043"_fix_wall.html,
|
||||||
"wall/lj126"_fix_wall.html,
|
"wall/lj126"_fix_wall.html,
|
||||||
"wall/lj93"_fix_wall.html,
|
"wall/lj93 (k)"_fix_wall.html,
|
||||||
"wall/piston"_fix_wall_piston.html,
|
"wall/piston"_fix_wall_piston.html,
|
||||||
"wall/reflect (k)"_fix_wall_reflect.html,
|
"wall/reflect (k)"_fix_wall_reflect.html,
|
||||||
"wall/region"_fix_wall_region.html,
|
"wall/region"_fix_wall_region.html,
|
||||||
@ -681,14 +684,14 @@ package"_Section_start.html#start_3.
|
|||||||
"atc"_fix_atc.html,
|
"atc"_fix_atc.html,
|
||||||
"ave/correlate/long"_fix_ave_correlate_long.html,
|
"ave/correlate/long"_fix_ave_correlate_long.html,
|
||||||
"colvars"_fix_colvars.html,
|
"colvars"_fix_colvars.html,
|
||||||
"dpd/energy"_fix_dpd_energy.html,
|
"dpd/energy (k)"_fix_dpd_energy.html,
|
||||||
"drude"_fix_drude.html,
|
"drude"_fix_drude.html,
|
||||||
"drude/transform/direct"_fix_drude_transform.html,
|
"drude/transform/direct"_fix_drude_transform.html,
|
||||||
"drude/transform/reverse"_fix_drude_transform.html,
|
"drude/transform/reverse"_fix_drude_transform.html,
|
||||||
"edpd/source"_fix_dpd_source.html,
|
"edpd/source"_fix_dpd_source.html,
|
||||||
"eos/cv"_fix_eos_cv.html,
|
"eos/cv"_fix_eos_cv.html,
|
||||||
"eos/table"_fix_eos_table.html,
|
"eos/table"_fix_eos_table.html,
|
||||||
"eos/table/rx"_fix_eos_table_rx.html,
|
"eos/table/rx (k)"_fix_eos_table_rx.html,
|
||||||
"filter/corotate"_fix_filter_corotate.html,
|
"filter/corotate"_fix_filter_corotate.html,
|
||||||
"flow/gauss"_fix_flow_gauss.html,
|
"flow/gauss"_fix_flow_gauss.html,
|
||||||
"gle"_fix_gle.html,
|
"gle"_fix_gle.html,
|
||||||
@ -718,17 +721,20 @@ package"_Section_start.html#start_3.
|
|||||||
"nve/eff"_fix_nve_eff.html,
|
"nve/eff"_fix_nve_eff.html,
|
||||||
"nvt/eff"_fix_nh_eff.html,
|
"nvt/eff"_fix_nh_eff.html,
|
||||||
"nvt/sllod/eff"_fix_nvt_sllod_eff.html,
|
"nvt/sllod/eff"_fix_nvt_sllod_eff.html,
|
||||||
|
"npt/uef"_fix_nh_uef.html,
|
||||||
|
"nvt/uef"_fix_nh_uef.html,
|
||||||
"phonon"_fix_phonon.html,
|
"phonon"_fix_phonon.html,
|
||||||
"pimd"_fix_pimd.html,
|
"pimd"_fix_pimd.html,
|
||||||
"qbmsst"_fix_qbmsst.html,
|
"qbmsst"_fix_qbmsst.html,
|
||||||
"qeq/reax (ko)"_fix_qeq_reax.html,
|
"qeq/reax (ko)"_fix_qeq_reax.html,
|
||||||
"qmmm"_fix_qmmm.html,
|
"qmmm"_fix_qmmm.html,
|
||||||
"qtb"_fix_qtb.html,
|
"qtb"_fix_qtb.html,
|
||||||
"reax/c/bonds"_fix_reax_bonds.html,
|
"reax/c/bonds (k)"_fix_reax_bonds.html,
|
||||||
"reax/c/species"_fix_reaxc_species.html,
|
"reax/c/species (k)"_fix_reaxc_species.html,
|
||||||
"rx"_fix_rx.html,
|
"rhok"_fix_rhok.html,
|
||||||
|
"rx (k)"_fix_rx.html,
|
||||||
"saed/vtk"_fix_saed_vtk.html,
|
"saed/vtk"_fix_saed_vtk.html,
|
||||||
"shardlow"_fix_shardlow.html,
|
"shardlow (k)"_fix_shardlow.html,
|
||||||
"smd"_fix_smd.html,
|
"smd"_fix_smd.html,
|
||||||
"smd/adjust/dt"_fix_smd_adjust_dt.html,
|
"smd/adjust/dt"_fix_smd_adjust_dt.html,
|
||||||
"smd/integrate/tlsph"_fix_smd_integrate_tlsph.html,
|
"smd/integrate/tlsph"_fix_smd_integrate_tlsph.html,
|
||||||
@ -755,6 +761,7 @@ package"_Section_accelerate.html. This is indicated by additional
|
|||||||
letters in parenthesis: g = GPU, i = USER-INTEL, k =
|
letters in parenthesis: g = GPU, i = USER-INTEL, k =
|
||||||
KOKKOS, o = USER-OMP, t = OPT.
|
KOKKOS, o = USER-OMP, t = OPT.
|
||||||
|
|
||||||
|
"aggregate/atom"_compute_cluster_atom.html,
|
||||||
"angle"_compute_angle.html,
|
"angle"_compute_angle.html,
|
||||||
"angle/local"_compute_angle_local.html,
|
"angle/local"_compute_angle_local.html,
|
||||||
"angmom/chunk"_compute_angmom_chunk.html,
|
"angmom/chunk"_compute_angmom_chunk.html,
|
||||||
@ -853,6 +860,7 @@ package"_Section_start.html#start_3.
|
|||||||
"meso/t/atom"_compute_meso_t_atom.html,
|
"meso/t/atom"_compute_meso_t_atom.html,
|
||||||
"pe/tally"_compute_tally.html,
|
"pe/tally"_compute_tally.html,
|
||||||
"pe/mol/tally"_compute_tally.html,
|
"pe/mol/tally"_compute_tally.html,
|
||||||
|
"pressure/uef"_compute_pressure_uef.html,
|
||||||
"saed"_compute_saed.html,
|
"saed"_compute_saed.html,
|
||||||
"smd/contact/radius"_compute_smd_contact_radius.html,
|
"smd/contact/radius"_compute_smd_contact_radius.html,
|
||||||
"smd/damage"_compute_smd_damage.html,
|
"smd/damage"_compute_smd_damage.html,
|
||||||
@ -881,6 +889,7 @@ package"_Section_start.html#start_3.
|
|||||||
"temp/deform/eff"_compute_temp_deform_eff.html,
|
"temp/deform/eff"_compute_temp_deform_eff.html,
|
||||||
"temp/region/eff"_compute_temp_region_eff.html,
|
"temp/region/eff"_compute_temp_region_eff.html,
|
||||||
"temp/rotate"_compute_temp_rotate.html,
|
"temp/rotate"_compute_temp_rotate.html,
|
||||||
|
"temp/uef"_compute_temp_uef.html,
|
||||||
"xrd"_compute_xrd.html :tb(c=6,ea=c)
|
"xrd"_compute_xrd.html :tb(c=6,ea=c)
|
||||||
|
|
||||||
:line
|
:line
|
||||||
@ -898,7 +907,7 @@ KOKKOS, o = USER-OMP, t = OPT.
|
|||||||
"none"_pair_none.html,
|
"none"_pair_none.html,
|
||||||
"zero"_pair_zero.html,
|
"zero"_pair_zero.html,
|
||||||
"hybrid"_pair_hybrid.html,
|
"hybrid"_pair_hybrid.html,
|
||||||
"hybrid/overlay"_pair_hybrid.html,
|
"hybrid/overlay (k)"_pair_hybrid.html,
|
||||||
"adp (o)"_pair_adp.html,
|
"adp (o)"_pair_adp.html,
|
||||||
"airebo (oi)"_pair_airebo.html,
|
"airebo (oi)"_pair_airebo.html,
|
||||||
"airebo/morse (oi)"_pair_airebo.html,
|
"airebo/morse (oi)"_pair_airebo.html,
|
||||||
@ -912,11 +921,12 @@ KOKKOS, o = USER-OMP, t = OPT.
|
|||||||
"born/coul/long/cs"_pair_born.html,
|
"born/coul/long/cs"_pair_born.html,
|
||||||
"born/coul/msm (o)"_pair_born.html,
|
"born/coul/msm (o)"_pair_born.html,
|
||||||
"born/coul/wolf (go)"_pair_born.html,
|
"born/coul/wolf (go)"_pair_born.html,
|
||||||
|
"born/coul/wolf/cs"_pair_born.html,
|
||||||
"brownian (o)"_pair_brownian.html,
|
"brownian (o)"_pair_brownian.html,
|
||||||
"brownian/poly (o)"_pair_brownian.html,
|
"brownian/poly (o)"_pair_brownian.html,
|
||||||
"buck (gkio)"_pair_buck.html,
|
"buck (giko)"_pair_buck.html,
|
||||||
"buck/coul/cut (gkio)"_pair_buck.html,
|
"buck/coul/cut (giko)"_pair_buck.html,
|
||||||
"buck/coul/long (gkio)"_pair_buck.html,
|
"buck/coul/long (giko)"_pair_buck.html,
|
||||||
"buck/coul/long/cs"_pair_buck.html,
|
"buck/coul/long/cs"_pair_buck.html,
|
||||||
"buck/coul/msm (o)"_pair_buck.html,
|
"buck/coul/msm (o)"_pair_buck.html,
|
||||||
"buck/long/coul/long (o)"_pair_buck_long.html,
|
"buck/long/coul/long (o)"_pair_buck_long.html,
|
||||||
@ -931,12 +941,13 @@ KOKKOS, o = USER-OMP, t = OPT.
|
|||||||
"coul/msm"_pair_coul.html,
|
"coul/msm"_pair_coul.html,
|
||||||
"coul/streitz"_pair_coul.html,
|
"coul/streitz"_pair_coul.html,
|
||||||
"coul/wolf (ko)"_pair_coul.html,
|
"coul/wolf (ko)"_pair_coul.html,
|
||||||
"dpd (go)"_pair_dpd.html,
|
"coul/wolf/cs"_pair_coul.html,
|
||||||
|
"dpd (gio)"_pair_dpd.html,
|
||||||
"dpd/tstat (go)"_pair_dpd.html,
|
"dpd/tstat (go)"_pair_dpd.html,
|
||||||
"dsmc"_pair_dsmc.html,
|
"dsmc"_pair_dsmc.html,
|
||||||
"eam (gkiot)"_pair_eam.html,
|
"eam (gikot)"_pair_eam.html,
|
||||||
"eam/alloy (gkiot)"_pair_eam.html,
|
"eam/alloy (gikot)"_pair_eam.html,
|
||||||
"eam/fs (gkiot)"_pair_eam.html,
|
"eam/fs (gikot)"_pair_eam.html,
|
||||||
"eim (o)"_pair_eim.html,
|
"eim (o)"_pair_eim.html,
|
||||||
"gauss (go)"_pair_gauss.html,
|
"gauss (go)"_pair_gauss.html,
|
||||||
"gayberne (gio)"_pair_gayberne.html,
|
"gayberne (gio)"_pair_gayberne.html,
|
||||||
@ -950,9 +961,9 @@ KOKKOS, o = USER-OMP, t = OPT.
|
|||||||
"kim"_pair_kim.html,
|
"kim"_pair_kim.html,
|
||||||
"lcbop"_pair_lcbop.html,
|
"lcbop"_pair_lcbop.html,
|
||||||
"line/lj"_pair_line_lj.html,
|
"line/lj"_pair_line_lj.html,
|
||||||
"lj/charmm/coul/charmm (kio)"_pair_charmm.html,
|
"lj/charmm/coul/charmm (iko)"_pair_charmm.html,
|
||||||
"lj/charmm/coul/charmm/implicit (ko)"_pair_charmm.html,
|
"lj/charmm/coul/charmm/implicit (ko)"_pair_charmm.html,
|
||||||
"lj/charmm/coul/long (gkio)"_pair_charmm.html,
|
"lj/charmm/coul/long (giko)"_pair_charmm.html,
|
||||||
"lj/charmm/coul/msm"_pair_charmm.html,
|
"lj/charmm/coul/msm"_pair_charmm.html,
|
||||||
"lj/charmmfsw/coul/charmmfsh"_pair_charmm.html,
|
"lj/charmmfsw/coul/charmmfsh"_pair_charmm.html,
|
||||||
"lj/charmmfsw/coul/long"_pair_charmm.html,
|
"lj/charmmfsw/coul/long"_pair_charmm.html,
|
||||||
@ -1002,20 +1013,21 @@ KOKKOS, o = USER-OMP, t = OPT.
|
|||||||
"resquared (go)"_pair_resquared.html,
|
"resquared (go)"_pair_resquared.html,
|
||||||
"snap"_pair_snap.html,
|
"snap"_pair_snap.html,
|
||||||
"soft (go)"_pair_soft.html,
|
"soft (go)"_pair_soft.html,
|
||||||
"sw (gkio)"_pair_sw.html,
|
"sw (giko)"_pair_sw.html,
|
||||||
"table (gko)"_pair_table.html,
|
"table (gko)"_pair_table.html,
|
||||||
"tersoff (gkio)"_pair_tersoff.html,
|
"tersoff (giko)"_pair_tersoff.html,
|
||||||
"tersoff/mod (gko)"_pair_tersoff_mod.html,
|
"tersoff/mod (gko)"_pair_tersoff_mod.html,
|
||||||
"tersoff/mod/c (o)"_pair_tersoff_mod.html,
|
"tersoff/mod/c (o)"_pair_tersoff_mod.html,
|
||||||
"tersoff/zbl (gko)"_pair_tersoff_zbl.html,
|
"tersoff/zbl (gko)"_pair_tersoff_zbl.html,
|
||||||
"tip4p/cut (o)"_pair_coul.html,
|
"tip4p/cut (o)"_pair_coul.html,
|
||||||
"tip4p/long (o)"_pair_coul.html,
|
"tip4p/long (o)"_pair_coul.html,
|
||||||
"tri/lj"_pair_tri_lj.html,
|
"tri/lj"_pair_tri_lj.html,
|
||||||
|
"ufm (got)"_pair_ufm.html,
|
||||||
"vashishta (ko)"_pair_vashishta.html,
|
"vashishta (ko)"_pair_vashishta.html,
|
||||||
"vashishta/table (o)"_pair_vashishta.html,
|
"vashishta/table (o)"_pair_vashishta.html,
|
||||||
"yukawa (go)"_pair_yukawa.html,
|
"yukawa (gok)"_pair_yukawa.html,
|
||||||
"yukawa/colloid (go)"_pair_yukawa_colloid.html,
|
"yukawa/colloid (go)"_pair_yukawa_colloid.html,
|
||||||
"zbl (go)"_pair_zbl.html :tb(c=4,ea=c)
|
"zbl (gok)"_pair_zbl.html :tb(c=4,ea=c)
|
||||||
|
|
||||||
These are additional pair styles in USER packages, which can be used
|
These are additional pair styles in USER packages, which can be used
|
||||||
if "LAMMPS is built with the appropriate
|
if "LAMMPS is built with the appropriate
|
||||||
@ -1028,13 +1040,14 @@ package"_Section_start.html#start_3.
|
|||||||
"coul/diel (o)"_pair_coul_diel.html,
|
"coul/diel (o)"_pair_coul_diel.html,
|
||||||
"coul/long/soft (o)"_pair_lj_soft.html,
|
"coul/long/soft (o)"_pair_lj_soft.html,
|
||||||
"dpd/fdt"_pair_dpd_fdt.html,
|
"dpd/fdt"_pair_dpd_fdt.html,
|
||||||
"dpd/fdt/energy"_pair_dpd_fdt.html,
|
"dpd/fdt/energy (k)"_pair_dpd_fdt.html,
|
||||||
"eam/cd (o)"_pair_eam.html,
|
"eam/cd (o)"_pair_eam.html,
|
||||||
"edip (o)"_pair_edip.html,
|
"edip (o)"_pair_edip.html,
|
||||||
"edip/multi"_pair_edip.html,
|
"edip/multi"_pair_edip.html,
|
||||||
"edpd"_pair_meso.html,
|
"edpd"_pair_meso.html,
|
||||||
"eff/cut"_pair_eff.html,
|
"eff/cut"_pair_eff.html,
|
||||||
"exp6/rx"_pair_exp6_rx.html,
|
"exp6/rx (k)"_pair_exp6_rx.html,
|
||||||
|
"extep"_pair_extep.html,
|
||||||
"gauss/cut"_pair_gauss.html,
|
"gauss/cut"_pair_gauss.html,
|
||||||
"kolmogorov/crespi/z"_pair_kolmogorov_crespi_z.html,
|
"kolmogorov/crespi/z"_pair_kolmogorov_crespi_z.html,
|
||||||
"lennard/mdf"_pair_mdf.html,
|
"lennard/mdf"_pair_mdf.html,
|
||||||
@ -1060,7 +1073,7 @@ package"_Section_start.html#start_3.
|
|||||||
"morse/smooth/linear"_pair_morse.html,
|
"morse/smooth/linear"_pair_morse.html,
|
||||||
"morse/soft"_pair_morse.html,
|
"morse/soft"_pair_morse.html,
|
||||||
"multi/lucy"_pair_multi_lucy.html,
|
"multi/lucy"_pair_multi_lucy.html,
|
||||||
"multi/lucy/rx"_pair_multi_lucy_rx.html,
|
"multi/lucy/rx (k)"_pair_multi_lucy_rx.html,
|
||||||
"oxdna/coaxstk"_pair_oxdna.html,
|
"oxdna/coaxstk"_pair_oxdna.html,
|
||||||
"oxdna/excv"_pair_oxdna.html,
|
"oxdna/excv"_pair_oxdna.html,
|
||||||
"oxdna/hbond"_pair_oxdna.html,
|
"oxdna/hbond"_pair_oxdna.html,
|
||||||
@ -1077,6 +1090,7 @@ package"_Section_start.html#start_3.
|
|||||||
"smd/triangulated/surface"_pair_smd_triangulated_surface.html,
|
"smd/triangulated/surface"_pair_smd_triangulated_surface.html,
|
||||||
"smd/ulsph"_pair_smd_ulsph.html,
|
"smd/ulsph"_pair_smd_ulsph.html,
|
||||||
"smtbq"_pair_smtbq.html,
|
"smtbq"_pair_smtbq.html,
|
||||||
|
"snap (k)"_pair_snap.html,
|
||||||
"sph/heatconduction"_pair_sph_heatconduction.html,
|
"sph/heatconduction"_pair_sph_heatconduction.html,
|
||||||
"sph/idealgas"_pair_sph_idealgas.html,
|
"sph/idealgas"_pair_sph_idealgas.html,
|
||||||
"sph/lj"_pair_sph_lj.html,
|
"sph/lj"_pair_sph_lj.html,
|
||||||
@ -1084,7 +1098,7 @@ package"_Section_start.html#start_3.
|
|||||||
"sph/taitwater"_pair_sph_taitwater.html,
|
"sph/taitwater"_pair_sph_taitwater.html,
|
||||||
"sph/taitwater/morris"_pair_sph_taitwater_morris.html,
|
"sph/taitwater/morris"_pair_sph_taitwater_morris.html,
|
||||||
"srp"_pair_srp.html,
|
"srp"_pair_srp.html,
|
||||||
"table/rx"_pair_table_rx.html,
|
"table/rx (k)"_pair_table_rx.html,
|
||||||
"tdpd"_pair_meso.html,
|
"tdpd"_pair_meso.html,
|
||||||
"tersoff/table (o)"_pair_tersoff.html,
|
"tersoff/table (o)"_pair_tersoff.html,
|
||||||
"thole"_pair_thole.html,
|
"thole"_pair_thole.html,
|
||||||
@ -1108,6 +1122,7 @@ KOKKOS, o = USER-OMP, t = OPT.
|
|||||||
"class2 (ko)"_bond_class2.html,
|
"class2 (ko)"_bond_class2.html,
|
||||||
"fene (iko)"_bond_fene.html,
|
"fene (iko)"_bond_fene.html,
|
||||||
"fene/expand (o)"_bond_fene_expand.html,
|
"fene/expand (o)"_bond_fene_expand.html,
|
||||||
|
"gromos (o)"_bond_gromos.html,
|
||||||
"harmonic (ko)"_bond_harmonic.html,
|
"harmonic (ko)"_bond_harmonic.html,
|
||||||
"morse (o)"_bond_morse.html,
|
"morse (o)"_bond_morse.html,
|
||||||
"nonlinear (o)"_bond_nonlinear.html,
|
"nonlinear (o)"_bond_nonlinear.html,
|
||||||
@ -1174,7 +1189,7 @@ USER-OMP, t = OPT.
|
|||||||
"none"_dihedral_none.html,
|
"none"_dihedral_none.html,
|
||||||
"zero"_dihedral_zero.html,
|
"zero"_dihedral_zero.html,
|
||||||
"hybrid"_dihedral_hybrid.html,
|
"hybrid"_dihedral_hybrid.html,
|
||||||
"charmm (ko)"_dihedral_charmm.html,
|
"charmm (iko)"_dihedral_charmm.html,
|
||||||
"charmmfsw"_dihedral_charmm.html,
|
"charmmfsw"_dihedral_charmm.html,
|
||||||
"class2 (ko)"_dihedral_class2.html,
|
"class2 (ko)"_dihedral_class2.html,
|
||||||
"harmonic (io)"_dihedral_harmonic.html,
|
"harmonic (io)"_dihedral_harmonic.html,
|
||||||
@ -1187,7 +1202,7 @@ used if "LAMMPS is built with the appropriate
|
|||||||
package"_Section_start.html#start_3.
|
package"_Section_start.html#start_3.
|
||||||
|
|
||||||
"cosine/shift/exp (o)"_dihedral_cosine_shift_exp.html,
|
"cosine/shift/exp (o)"_dihedral_cosine_shift_exp.html,
|
||||||
"fourier (o)"_dihedral_fourier.html,
|
"fourier (io)"_dihedral_fourier.html,
|
||||||
"nharmonic (o)"_dihedral_nharmonic.html,
|
"nharmonic (o)"_dihedral_nharmonic.html,
|
||||||
"quadratic (o)"_dihedral_quadratic.html,
|
"quadratic (o)"_dihedral_quadratic.html,
|
||||||
"spherical (o)"_dihedral_spherical.html,
|
"spherical (o)"_dihedral_spherical.html,
|
||||||
@ -1210,7 +1225,7 @@ USER-OMP, t = OPT.
|
|||||||
"hybrid"_improper_hybrid.html,
|
"hybrid"_improper_hybrid.html,
|
||||||
"class2 (ko)"_improper_class2.html,
|
"class2 (ko)"_improper_class2.html,
|
||||||
"cvff (io)"_improper_cvff.html,
|
"cvff (io)"_improper_cvff.html,
|
||||||
"harmonic (ko)"_improper_harmonic.html,
|
"harmonic (iko)"_improper_harmonic.html,
|
||||||
"umbrella (o)"_improper_umbrella.html :tb(c=4,ea=c)
|
"umbrella (o)"_improper_umbrella.html :tb(c=4,ea=c)
|
||||||
|
|
||||||
These are additional improper styles in USER packages, which can be
|
These are additional improper styles in USER packages, which can be
|
||||||
@ -1238,7 +1253,7 @@ USER-OMP, t = OPT.
|
|||||||
"ewald/disp"_kspace_style.html,
|
"ewald/disp"_kspace_style.html,
|
||||||
"msm (o)"_kspace_style.html,
|
"msm (o)"_kspace_style.html,
|
||||||
"msm/cg (o)"_kspace_style.html,
|
"msm/cg (o)"_kspace_style.html,
|
||||||
"pppm (go)"_kspace_style.html,
|
"pppm (gok)"_kspace_style.html,
|
||||||
"pppm/cg (o)"_kspace_style.html,
|
"pppm/cg (o)"_kspace_style.html,
|
||||||
"pppm/disp (i)"_kspace_style.html,
|
"pppm/disp (i)"_kspace_style.html,
|
||||||
"pppm/disp/tip4p"_kspace_style.html,
|
"pppm/disp/tip4p"_kspace_style.html,
|
||||||
|
|||||||
@ -454,7 +454,7 @@ NOTE: By default, for 2d systems, granular particles are still modeled
|
|||||||
as 3d spheres, not 2d discs (circles), meaning their moment of inertia
|
as 3d spheres, not 2d discs (circles), meaning their moment of inertia
|
||||||
will be the same as in 3d. If you wish to model granular particles in
|
will be the same as in 3d. If you wish to model granular particles in
|
||||||
2d as 2d discs, see the note on this topic in "Section
|
2d as 2d discs, see the note on this topic in "Section
|
||||||
6.2"_Section_howto.html#howto_2, where 2d simulations are disussed.
|
6.2"_Section_howto.html#howto_2, where 2d simulations are discussed.
|
||||||
|
|
||||||
:line
|
:line
|
||||||
|
|
||||||
@ -2859,8 +2859,8 @@ The nature of the atoms (core, Drude particle or non-polarizable) is
|
|||||||
specified via the "fix drude"_fix_drude.html command. The special
|
specified via the "fix drude"_fix_drude.html command. The special
|
||||||
list of neighbors is automatically refactored to account for the
|
list of neighbors is automatically refactored to account for the
|
||||||
equivalence of core and Drude particles as regards special 1-2 to 1-4
|
equivalence of core and Drude particles as regards special 1-2 to 1-4
|
||||||
screening. It may be necessary to use the {extra} keyword of the
|
screening. It may be necessary to use the {extra/special/per/atom}
|
||||||
"special_bonds"_special_bonds.html command. If using "fix
|
keyword of the "read_data"_read_data.html command. If using "fix
|
||||||
shake"_fix_shake.html, make sure no Drude particle is in this fix
|
shake"_fix_shake.html, make sure no Drude particle is in this fix
|
||||||
group.
|
group.
|
||||||
|
|
||||||
|
|||||||
@ -96,6 +96,7 @@ Package, Description, Doc page, Example, Library
|
|||||||
"KIM"_#KIM, OpenKIM wrapper, "pair_style kim"_pair_kim.html, kim, ext
|
"KIM"_#KIM, OpenKIM wrapper, "pair_style kim"_pair_kim.html, kim, ext
|
||||||
"KOKKOS"_#KOKKOS, Kokkos-enabled styles, "Section 5.3.3"_accelerate_kokkos.html, "Benchmarks"_http://lammps.sandia.gov/bench.html, -
|
"KOKKOS"_#KOKKOS, Kokkos-enabled styles, "Section 5.3.3"_accelerate_kokkos.html, "Benchmarks"_http://lammps.sandia.gov/bench.html, -
|
||||||
"KSPACE"_#KSPACE, long-range Coulombic solvers, "kspace_style"_kspace_style.html, peptide, -
|
"KSPACE"_#KSPACE, long-range Coulombic solvers, "kspace_style"_kspace_style.html, peptide, -
|
||||||
|
"LATTE"_#LATTE, quantum DFTB forces via LATTE, "fix latte"_fix_latte.html, latte, ext
|
||||||
"MANYBODY"_#MANYBODY, many-body potentials, "pair_style tersoff"_pair_tersoff.html, shear, -
|
"MANYBODY"_#MANYBODY, many-body potentials, "pair_style tersoff"_pair_tersoff.html, shear, -
|
||||||
"MC"_#MC, Monte Carlo options, "fix gcmc"_fix_gcmc.html, -, -
|
"MC"_#MC, Monte Carlo options, "fix gcmc"_fix_gcmc.html, -, -
|
||||||
"MEAM"_#MEAM, modified EAM potential, "pair_style meam"_pair_meam.html, meam, int
|
"MEAM"_#MEAM, modified EAM potential, "pair_style meam"_pair_meam.html, meam, int
|
||||||
@ -137,6 +138,7 @@ Package, Description, Doc page, Example, Library
|
|||||||
"USER-MESO"_#USER-MESO, mesoscale DPD models, "pair_style edpd"_pair_meso.html, USER/meso, -
|
"USER-MESO"_#USER-MESO, mesoscale DPD models, "pair_style edpd"_pair_meso.html, USER/meso, -
|
||||||
"USER-MGPT"_#USER-MGPT, fast MGPT multi-ion potentials, "pair_style mgpt"_pair_mgpt.html, USER/mgpt, -
|
"USER-MGPT"_#USER-MGPT, fast MGPT multi-ion potentials, "pair_style mgpt"_pair_mgpt.html, USER/mgpt, -
|
||||||
"USER-MISC"_#USER-MISC, single-file contributions, USER-MISC/README, USER/misc, -
|
"USER-MISC"_#USER-MISC, single-file contributions, USER-MISC/README, USER/misc, -
|
||||||
|
"USER-MOFFF"_#USER-MOFFF, styles for "MOF-FF"_MOFplus force field, "pair_style buck6d/coul/gauss"_pair_buck6d_coul_gauss.html, USER/mofff, -
|
||||||
"USER-MOLFILE"_#USER-MOLFILE, "VMD"_vmd_home molfile plug-ins,"dump molfile"_dump_molfile.html, -, ext
|
"USER-MOLFILE"_#USER-MOLFILE, "VMD"_vmd_home molfile plug-ins,"dump molfile"_dump_molfile.html, -, ext
|
||||||
"USER-NETCDF"_#USER-NETCDF, dump output via NetCDF,"dump netcdf"_dump_netcdf.html, -, ext
|
"USER-NETCDF"_#USER-NETCDF, dump output via NetCDF,"dump netcdf"_dump_netcdf.html, -, ext
|
||||||
"USER-OMP"_#USER-OMP, OpenMP-enabled styles,"Section 5.3.4"_accelerate_omp.html, "Benchmarks"_http://lammps.sandia.gov/bench.html, -
|
"USER-OMP"_#USER-OMP, OpenMP-enabled styles,"Section 5.3.4"_accelerate_omp.html, "Benchmarks"_http://lammps.sandia.gov/bench.html, -
|
||||||
@ -149,6 +151,7 @@ Package, Description, Doc page, Example, Library
|
|||||||
"USER-SMTBQ"_#USER-SMTBQ, second moment tight binding QEq potential,"pair_style smtbq"_pair_smtbq.html, USER/smtbq, -
|
"USER-SMTBQ"_#USER-SMTBQ, second moment tight binding QEq potential,"pair_style smtbq"_pair_smtbq.html, USER/smtbq, -
|
||||||
"USER-SPH"_#USER-SPH, smoothed particle hydrodynamics,"SPH User Guide"_PDF/SPH_LAMMPS_userguide.pdf, USER/sph, -
|
"USER-SPH"_#USER-SPH, smoothed particle hydrodynamics,"SPH User Guide"_PDF/SPH_LAMMPS_userguide.pdf, USER/sph, -
|
||||||
"USER-TALLY"_#USER-TALLY, pairwise tally computes,"compute XXX/tally"_compute_tally.html, USER/tally, -
|
"USER-TALLY"_#USER-TALLY, pairwise tally computes,"compute XXX/tally"_compute_tally.html, USER/tally, -
|
||||||
|
"USER-UEF"_#USER-UEF, extensional flow,"fix nvt/uef"_fix_nh_uef.html, USER/uef, -
|
||||||
"USER-VTK"_#USER-VTK, dump output via VTK, "compute vtk"_dump_vtk.html, -, ext :tb(ea=c,ca1=l)
|
"USER-VTK"_#USER-VTK, dump output via VTK, "compute vtk"_dump_vtk.html, -, ext :tb(ea=c,ca1=l)
|
||||||
|
|
||||||
:line
|
:line
|
||||||
@ -241,7 +244,7 @@ COLLOID package :link(COLLOID),h4
|
|||||||
|
|
||||||
[Contents:]
|
[Contents:]
|
||||||
|
|
||||||
Coarse-grained finite-size colloidal particles. Pair stayle and fix
|
Coarse-grained finite-size colloidal particles. Pair styles and fix
|
||||||
wall styles for colloidal interactions. Includes the Fast Lubrication
|
wall styles for colloidal interactions. Includes the Fast Lubrication
|
||||||
Dynamics (FLD) method for hydrodynamic interactions, which is a
|
Dynamics (FLD) method for hydrodynamic interactions, which is a
|
||||||
simplified approximation to Stokesian dynamics.
|
simplified approximation to Stokesian dynamics.
|
||||||
@ -695,6 +698,66 @@ bench/in.rhodo :ul
|
|||||||
|
|
||||||
:line
|
:line
|
||||||
|
|
||||||
|
LATTE package :link(LATTE),h4
|
||||||
|
|
||||||
|
[Contents:]
|
||||||
|
|
||||||
|
A fix command which wraps the LATTE DFTB code, so that molecular
|
||||||
|
dynamics can be run with LAMMPS using density-functional tight-binding
|
||||||
|
quantum forces calculated by LATTE.
|
||||||
|
|
||||||
|
More information on LATTE can be found at this web site:
|
||||||
|
"https://github.com/lanl/LATTE"_latte_home. A brief technical
|
||||||
|
description is given with the "fix latte"_fix_latte.html command.
|
||||||
|
|
||||||
|
:link(latte_home,https://github.com/lanl/LATTE)
|
||||||
|
|
||||||
|
[Authors:] Christian Negre (LANL) and Steve Plimpton (Sandia). LATTE
|
||||||
|
itself is developed at Los Alamos National Laboratory by Marc
|
||||||
|
Cawkwell, Anders Niklasson, and Christian Negre.
|
||||||
|
|
||||||
|
[Install or un-install:]
|
||||||
|
|
||||||
|
Before building LAMMPS with this package, you must first download and
|
||||||
|
build the LATTE library. You can do this manually if you prefer;
|
||||||
|
follow the instructions in lib/latte/README. You can also do it in
|
||||||
|
one step from the lammps/src dir, using a command like these, which
|
||||||
|
simply invokes the lib/latte/Install.py script with the specified
|
||||||
|
args:
|
||||||
|
|
||||||
|
make lib-latte # print help message
|
||||||
|
make lib-latte args="-b" # download and build in lib/latte/LATTE-master
|
||||||
|
make lib-latte args="-p $HOME/latte" # use existing LATTE installation in $HOME/latte
|
||||||
|
make lib-latte args="-b -m gfortran" # download and build in lib/latte and
|
||||||
|
# copy Makefile.lammps.gfortran to Makefile.lammps
|
||||||
|
:pre
|
||||||
|
|
||||||
|
Note that 3 symbolic (soft) links, "includelink" and "liblink" and
|
||||||
|
"filelink.o", are created in lib/latte to point into the LATTE home dir.
|
||||||
|
When LAMMPS builds in src it will use these links. You should
|
||||||
|
also check that the Makefile.lammps file you create is appropriate
|
||||||
|
for the compiler you use on your system to build LATTE.
|
||||||
|
|
||||||
|
You can then install/un-install the package and build LAMMPS in the
|
||||||
|
usual manner:
|
||||||
|
|
||||||
|
make yes-latte
|
||||||
|
make machine :pre
|
||||||
|
|
||||||
|
make no-latte
|
||||||
|
make machine :pre
|
||||||
|
|
||||||
|
[Supporting info:]
|
||||||
|
|
||||||
|
src/LATTE: filenames -> commands
|
||||||
|
src/LATTE/README
|
||||||
|
lib/latte/README
|
||||||
|
"fix latte"_fix_latte.html
|
||||||
|
examples/latte
|
||||||
|
"LAMMPS-LATTE tutorial"_https://github.com/lanl/LATTE/wiki/Using-LATTE-through-LAMMPS :ul
|
||||||
|
|
||||||
|
:line
|
||||||
|
|
||||||
MANYBODY package :link(MANYBODY),h4
|
MANYBODY package :link(MANYBODY),h4
|
||||||
|
|
||||||
[Contents:]
|
[Contents:]
|
||||||
@ -922,7 +985,7 @@ MSCG package :link(mscg),h4
|
|||||||
[Contents:]
|
[Contents:]
|
||||||
|
|
||||||
A "fix mscg"_fix_mscg.html command which can parameterize a
|
A "fix mscg"_fix_mscg.html command which can parameterize a
|
||||||
Mulit-Scale Coarse-Graining (MSCG) model using the open-source "MS-CG
|
Multi-Scale Coarse-Graining (MSCG) model using the open-source "MS-CG
|
||||||
library"_mscg_home.
|
library"_mscg_home.
|
||||||
|
|
||||||
:link(mscg_home,https://github.com/uchicago-voth/MSCG-release)
|
:link(mscg_home,https://github.com/uchicago-voth/MSCG-release)
|
||||||
@ -1719,7 +1782,7 @@ coarse-grained DPD-based models for energetic, reactive molecular
|
|||||||
crystalline materials. It includes many pair styles specific to these
|
crystalline materials. It includes many pair styles specific to these
|
||||||
systems, including for reactive DPD, where each particle has internal
|
systems, including for reactive DPD, where each particle has internal
|
||||||
state for multiple species and a coupled set of chemical reaction ODEs
|
state for multiple species and a coupled set of chemical reaction ODEs
|
||||||
are integrated each timestep. Highly accurate time intergrators for
|
are integrated each timestep. Highly accurate time integrators for
|
||||||
isothermal, isoenergetic, isobaric and isenthalpic conditions are
|
isothermal, isoenergetic, isobaric and isenthalpic conditions are
|
||||||
included. These enable long timesteps via the Shardlow splitting
|
included. These enable long timesteps via the Shardlow splitting
|
||||||
algorithm.
|
algorithm.
|
||||||
@ -2169,7 +2232,7 @@ Several extensions of the the dissipative particle dynamics (DPD)
|
|||||||
method. Specifically, energy-conserving DPD (eDPD) that can model
|
method. Specifically, energy-conserving DPD (eDPD) that can model
|
||||||
non-isothermal processes, many-body DPD (mDPD) for simulating
|
non-isothermal processes, many-body DPD (mDPD) for simulating
|
||||||
vapor-liquid coexistence, and transport DPD (tDPD) for modeling
|
vapor-liquid coexistence, and transport DPD (tDPD) for modeling
|
||||||
advection-diffuion-reaction systems. The equations of motion of these
|
advection-diffusion-reaction systems. The equations of motion of these
|
||||||
DPD extensions are integrated through a modified velocity-Verlet (MVV)
|
DPD extensions are integrated through a modified velocity-Verlet (MVV)
|
||||||
algorithm.
|
algorithm.
|
||||||
|
|
||||||
@ -2191,12 +2254,50 @@ src/USER-MESO/README
|
|||||||
"pair_style edpd"_pair_meso.html
|
"pair_style edpd"_pair_meso.html
|
||||||
"pair_style mdpd"_pair_meso.html
|
"pair_style mdpd"_pair_meso.html
|
||||||
"pair_style tdpd"_pair_meso.html
|
"pair_style tdpd"_pair_meso.html
|
||||||
"fix mvv/dpd"_fix_mvv.html
|
"fix mvv/dpd"_fix_mvv_dpd.html
|
||||||
examples/USER/meso
|
examples/USER/meso
|
||||||
http://lammps.sandia.gov/movies.html#mesodpd :ul
|
http://lammps.sandia.gov/movies.html#mesodpd :ul
|
||||||
|
|
||||||
:line
|
:line
|
||||||
|
|
||||||
|
USER-MOFFF package :link(USER-MOFFF),h4
|
||||||
|
|
||||||
|
[Contents:]
|
||||||
|
|
||||||
|
Pair, angle and improper styles needed to employ the MOF-FF
|
||||||
|
force field by Schmid and coworkers with LAMMPS.
|
||||||
|
MOF-FF is a first principles derived force field with the primary aim
|
||||||
|
to simulate MOFs and related porous framework materials, using spherical
|
||||||
|
Gaussian charges. It is described in S. Bureekaew et al., Phys. Stat. Sol. B
|
||||||
|
2013, 250, 1128-1141.
|
||||||
|
For the usage of MOF-FF see the example in the example directory as
|
||||||
|
well as the "MOF+"_MOFplus website.
|
||||||
|
|
||||||
|
:link(MOFplus,https://www.mofplus.org/content/show/MOF-FF)
|
||||||
|
|
||||||
|
[Author:] Hendrik Heenen (Technical U of Munich),
|
||||||
|
Rochus Schmid (Ruhr-University Bochum).
|
||||||
|
|
||||||
|
[Install or un-install:]
|
||||||
|
|
||||||
|
make yes-user-mofff
|
||||||
|
make machine :pre
|
||||||
|
|
||||||
|
make no-user-mofff
|
||||||
|
make machine :pre
|
||||||
|
|
||||||
|
[Supporting info:]
|
||||||
|
|
||||||
|
src/USER-MOFFF: filenames -> commands
|
||||||
|
src/USER-MOFFF/README
|
||||||
|
"pair_style buck6d/coul/gauss"_pair_buck6d_coul_gauss.html
|
||||||
|
"angle_style class2"_angle_class2.html
|
||||||
|
"angle_style cosine/buck6d"_angle_cosine_buck6d.html
|
||||||
|
"improper_style inversion/harmonic"_improper_inversion_harmonic.html
|
||||||
|
examples/USER/mofff :ul
|
||||||
|
|
||||||
|
:line
|
||||||
|
|
||||||
USER-MOLFILE package :link(USER-MOLFILE),h4
|
USER-MOLFILE package :link(USER-MOLFILE),h4
|
||||||
|
|
||||||
[Contents:]
|
[Contents:]
|
||||||
@ -2433,7 +2534,7 @@ make machine :pre
|
|||||||
|
|
||||||
NOTE: The LAMMPS executable these steps produce is not yet functional
|
NOTE: The LAMMPS executable these steps produce is not yet functional
|
||||||
for a QM/MM simulation. You must also build Quantum ESPRESSO and
|
for a QM/MM simulation. You must also build Quantum ESPRESSO and
|
||||||
create a new executable which links LAMMPS and Quanutm ESPRESSO
|
create a new executable which links LAMMPS and Quantum ESPRESSO
|
||||||
together. These are steps 3 and 4 described in the lib/qmmm/README
|
together. These are steps 3 and 4 described in the lib/qmmm/README
|
||||||
file.
|
file.
|
||||||
|
|
||||||
@ -2492,7 +2593,7 @@ developed by the Cambridge University group.
|
|||||||
|
|
||||||
:link(quip,https://github.com/libAtoms/QUIP)
|
:link(quip,https://github.com/libAtoms/QUIP)
|
||||||
|
|
||||||
To use this package you must have the QUIP libAatoms library available
|
To use this package you must have the QUIP libAtoms library available
|
||||||
on your system.
|
on your system.
|
||||||
|
|
||||||
[Author:] Albert Bartok (Cambridge University)
|
[Author:] Albert Bartok (Cambridge University)
|
||||||
@ -2710,13 +2811,44 @@ examples/USER/tally :ul
|
|||||||
|
|
||||||
:line
|
:line
|
||||||
|
|
||||||
|
USER-UEF package :link(USER-UEF),h4
|
||||||
|
|
||||||
|
[Contents:]
|
||||||
|
|
||||||
|
A fix style for the integration of the equations of motion under
|
||||||
|
extensional flow with proper boundary conditions, as well as several
|
||||||
|
supporting compute styles and an output option.
|
||||||
|
|
||||||
|
[Author:] David Nicholson (MIT).
|
||||||
|
|
||||||
|
[Install or un-install:]
|
||||||
|
|
||||||
|
make yes-user-uef
|
||||||
|
make machine :pre
|
||||||
|
|
||||||
|
make no-user-uef
|
||||||
|
make machine :pre
|
||||||
|
|
||||||
|
[Supporting info:]
|
||||||
|
|
||||||
|
src/USER-UEF: filenames -> commands
|
||||||
|
src/USER-UEF/README
|
||||||
|
"fix nvt/uef"_fix_nh_uef.html
|
||||||
|
"fix npt/uef"_fix_nh_uef.html
|
||||||
|
"compute pressure/uef"_compute_pressure_uef.html
|
||||||
|
"compute temp/uef"_compute_temp_uef.html
|
||||||
|
"dump cfg/uef"_dump_cfg_uef.html
|
||||||
|
examples/uef :ul
|
||||||
|
|
||||||
|
:line
|
||||||
|
|
||||||
USER-VTK package :link(USER-VTK),h4
|
USER-VTK package :link(USER-VTK),h4
|
||||||
|
|
||||||
[Contents:]
|
[Contents:]
|
||||||
|
|
||||||
A "dump vtk"_dump_vtk.html command which outputs
|
A "dump vtk"_dump_vtk.html command which outputs snapshot info in the
|
||||||
snapshot info in the "VTK format"_vtk, enabling visualization by
|
"VTK format"_vtk, enabling visualization by "Paraview"_paraview or
|
||||||
"Paraview"_paraview or other visuzlization packages.
|
other visualization packages.
|
||||||
|
|
||||||
:link(vtk,http://www.vtk.org)
|
:link(vtk,http://www.vtk.org)
|
||||||
:link(paraview,http://www.paraview.org)
|
:link(paraview,http://www.paraview.org)
|
||||||
|
|||||||
@ -123,7 +123,7 @@ code directly from an input script:
|
|||||||
|
|
||||||
"python"_python.html
|
"python"_python.html
|
||||||
"variable python"_variable.html
|
"variable python"_variable.html
|
||||||
"fix python"_fix_python.html
|
"fix python/invoke"_fix_python_invoke.html
|
||||||
"pair_style python"_pair_python.html :ul
|
"pair_style python"_pair_python.html :ul
|
||||||
|
|
||||||
The "python"_python.html command which can be used to define and
|
The "python"_python.html command which can be used to define and
|
||||||
@ -165,7 +165,7 @@ doc page for its python-style variables for more info, including
|
|||||||
examples of Python code you can write for both pure Python operations
|
examples of Python code you can write for both pure Python operations
|
||||||
and callbacks to LAMMPS.
|
and callbacks to LAMMPS.
|
||||||
|
|
||||||
The "fix python"_fix_python.html command can execute
|
The "fix python/invoke"_fix_python_invoke.html command can execute
|
||||||
Python code at selected timesteps during a simulation run.
|
Python code at selected timesteps during a simulation run.
|
||||||
|
|
||||||
The "pair_style python"_pair_python command allows you to define
|
The "pair_style python"_pair_python command allows you to define
|
||||||
|
|||||||
@ -79,7 +79,7 @@ This section has the following sub-sections:
|
|||||||
|
|
||||||
Read this first :h5,link(start_2_1)
|
Read this first :h5,link(start_2_1)
|
||||||
|
|
||||||
If you want to avoid building LAMMPS yourself, read the preceeding
|
If you want to avoid building LAMMPS yourself, read the preceding
|
||||||
section about options available for downloading and installing
|
section about options available for downloading and installing
|
||||||
executables. Details are discussed on the "download"_download page.
|
executables. Details are discussed on the "download"_download page.
|
||||||
|
|
||||||
@ -252,14 +252,13 @@ re-compile, after typing "make clean" (which will describe different
|
|||||||
clean options).
|
clean options).
|
||||||
|
|
||||||
The LMP_INC variable is used to include options that turn on ifdefs
|
The LMP_INC variable is used to include options that turn on ifdefs
|
||||||
within the LAMMPS code. The options that are currently recogized are:
|
within the LAMMPS code. The options that are currently recognized are:
|
||||||
|
|
||||||
-DLAMMPS_GZIP
|
-DLAMMPS_GZIP
|
||||||
-DLAMMPS_JPEG
|
-DLAMMPS_JPEG
|
||||||
-DLAMMPS_PNG
|
-DLAMMPS_PNG
|
||||||
-DLAMMPS_FFMPEG
|
-DLAMMPS_FFMPEG
|
||||||
-DLAMMPS_MEMALIGN
|
-DLAMMPS_MEMALIGN
|
||||||
-DLAMMPS_XDR
|
|
||||||
-DLAMMPS_SMALLBIG
|
-DLAMMPS_SMALLBIG
|
||||||
-DLAMMPS_BIGBIG
|
-DLAMMPS_BIGBIG
|
||||||
-DLAMMPS_SMALLSMALL
|
-DLAMMPS_SMALLSMALL
|
||||||
@ -308,11 +307,6 @@ has to be aligned on larger than default byte boundaries (e.g. 16
|
|||||||
bytes instead of 8 bytes on x86 type platforms) for optimal
|
bytes instead of 8 bytes on x86 type platforms) for optimal
|
||||||
performance.
|
performance.
|
||||||
|
|
||||||
If you use -DLAMMPS_XDR, the build will include XDR compatibility
|
|
||||||
files for doing particle dumps in XTC format. This is only necessary
|
|
||||||
if your platform does have its own XDR files available. See the
|
|
||||||
Restrictions section of the "dump"_dump.html command for details.
|
|
||||||
|
|
||||||
Use at most one of the -DLAMMPS_SMALLBIG, -DLAMMPS_BIGBIG,
|
Use at most one of the -DLAMMPS_SMALLBIG, -DLAMMPS_BIGBIG,
|
||||||
-DLAMMPS_SMALLSMALL settings. The default is -DLAMMPS_SMALLBIG. These
|
-DLAMMPS_SMALLSMALL settings. The default is -DLAMMPS_SMALLBIG. These
|
||||||
settings refer to use of 4-byte (small) vs 8-byte (big) integers
|
settings refer to use of 4-byte (small) vs 8-byte (big) integers
|
||||||
@ -363,7 +357,7 @@ installed on your platform. If MPI is installed on your system in the
|
|||||||
usual place (under /usr/local), you also may not need to specify these
|
usual place (under /usr/local), you also may not need to specify these
|
||||||
3 variables, assuming /usr/local is in your path. On some large
|
3 variables, assuming /usr/local is in your path. On some large
|
||||||
parallel machines which use "modules" for their compile/link
|
parallel machines which use "modules" for their compile/link
|
||||||
environements, you may simply need to include the correct module in
|
environments, you may simply need to include the correct module in
|
||||||
your build environment, before building LAMMPS. Or the parallel
|
your build environment, before building LAMMPS. Or the parallel
|
||||||
machine may have a vendor-provided MPI which the compiler has no
|
machine may have a vendor-provided MPI which the compiler has no
|
||||||
trouble finding.
|
trouble finding.
|
||||||
@ -431,7 +425,7 @@ use the KISS library described above.
|
|||||||
You may also need to set the FFT_INC, FFT_PATH, and FFT_LIB variables,
|
You may also need to set the FFT_INC, FFT_PATH, and FFT_LIB variables,
|
||||||
so the compiler and linker can find the needed FFT header and library
|
so the compiler and linker can find the needed FFT header and library
|
||||||
files. Note that on some large parallel machines which use "modules"
|
files. Note that on some large parallel machines which use "modules"
|
||||||
for their compile/link environements, you may simply need to include
|
for their compile/link environments, you may simply need to include
|
||||||
the correct module in your build environment. Or the parallel machine
|
the correct module in your build environment. Or the parallel machine
|
||||||
may have a vendor-provided FFT library which the compiler has no
|
may have a vendor-provided FFT library which the compiler has no
|
||||||
trouble finding. See the src/MAKE/OPTIONS/Makefile.fftw file for an
|
trouble finding. See the src/MAKE/OPTIONS/Makefile.fftw file for an
|
||||||
@ -470,7 +464,7 @@ precision.
|
|||||||
|
|
||||||
The FFT_INC variable also allows for a -DFFT_SINGLE setting that will
|
The FFT_INC variable also allows for a -DFFT_SINGLE setting that will
|
||||||
use single-precision FFTs with PPPM, which can speed-up long-range
|
use single-precision FFTs with PPPM, which can speed-up long-range
|
||||||
calulations, particularly in parallel or on GPUs. Fourier transform
|
calculations, particularly in parallel or on GPUs. Fourier transform
|
||||||
and related PPPM operations are somewhat insensitive to floating point
|
and related PPPM operations are somewhat insensitive to floating point
|
||||||
truncation errors and thus do not always need to be performed in
|
truncation errors and thus do not always need to be performed in
|
||||||
double precision. Using the -DFFT_SINGLE setting trades off a little
|
double precision. Using the -DFFT_SINGLE setting trades off a little
|
||||||
@ -483,7 +477,7 @@ with support for single-precision, as explained above. For FFTW3 you
|
|||||||
also need to include -lfftw3f with the FFT_LIB setting, in addition to
|
also need to include -lfftw3f with the FFT_LIB setting, in addition to
|
||||||
-lfftw3. For FFTW2, you also need to specify -DFFT_SIZE with the
|
-lfftw3. For FFTW2, you also need to specify -DFFT_SIZE with the
|
||||||
FFT_INC setting and -lsfftw with the FFT_LIB setting (in place of
|
FFT_INC setting and -lsfftw with the FFT_LIB setting (in place of
|
||||||
-lfftw). Similarly, if FFTW2 has been preinstalled with an explicit
|
-lfftw). Similarly, if FFTW2 has been pre-installed with an explicit
|
||||||
double-precision library (libdfftw.a and not the default libfftw.a),
|
double-precision library (libdfftw.a and not the default libfftw.a),
|
||||||
then you can specify -DFFT_SIZE (and not -DFFT_SINGLE), and specify
|
then you can specify -DFFT_SIZE (and not -DFFT_SINGLE), and specify
|
||||||
-ldfftw to use double-precision FFTs.
|
-ldfftw to use double-precision FFTs.
|
||||||
@ -714,7 +708,7 @@ list various make commands that can be used to manage packages.
|
|||||||
If you use a command in a LAMMPS input script that is part of a
|
If you use a command in a LAMMPS input script that is part of a
|
||||||
package, you must have built LAMMPS with that package, else you will
|
package, you must have built LAMMPS with that package, else you will
|
||||||
get an error that the style is invalid or the command is unknown.
|
get an error that the style is invalid or the command is unknown.
|
||||||
Every command's doc page specfies if it is part of a package. You can
|
Every command's doc page specifies if it is part of a package. You can
|
||||||
type
|
type
|
||||||
|
|
||||||
lmp_machine -h :pre
|
lmp_machine -h :pre
|
||||||
@ -859,7 +853,7 @@ details for each package.
|
|||||||
[External libraries:]
|
[External libraries:]
|
||||||
|
|
||||||
Packages in the tables "Section 4"_Section_packages.html with an "ext"
|
Packages in the tables "Section 4"_Section_packages.html with an "ext"
|
||||||
in the last column link to exernal libraries whose source code is not
|
in the last column link to external libraries whose source code is not
|
||||||
included with LAMMPS. You must first download and install the library
|
included with LAMMPS. You must first download and install the library
|
||||||
before building LAMMPS with that package installed. E.g. the voronoi
|
before building LAMMPS with that package installed. E.g. the voronoi
|
||||||
package links to the freely available "Voro++ library"_voro_home2. You
|
package links to the freely available "Voro++ library"_voro_home2. You
|
||||||
@ -920,7 +914,7 @@ CPUs and KNLs; the KOKKOS package builds for CPUs (OpenMP), GPUs
|
|||||||
Makefile.intel_cpu
|
Makefile.intel_cpu
|
||||||
Makefile.intel_phi
|
Makefile.intel_phi
|
||||||
Makefile.kokkos_omp
|
Makefile.kokkos_omp
|
||||||
Makefile.kokkos_cuda
|
Makefile.kokkos_cuda_mpi
|
||||||
Makefile.kokkos_phi
|
Makefile.kokkos_phi
|
||||||
Makefile.omp
|
Makefile.omp
|
||||||
Makefile.opt :ul
|
Makefile.opt :ul
|
||||||
@ -963,7 +957,7 @@ src/MAKE/Makefile.foo and perform the build in the directory
|
|||||||
Obj_shared_foo. This is so that each file can be compiled with the
|
Obj_shared_foo. This is so that each file can be compiled with the
|
||||||
-fPIC flag which is required for inclusion in a shared library. The
|
-fPIC flag which is required for inclusion in a shared library. The
|
||||||
build will create the file liblammps_foo.so which another application
|
build will create the file liblammps_foo.so which another application
|
||||||
can link to dyamically. It will also create a soft link liblammps.so,
|
can link to dynamically. It will also create a soft link liblammps.so,
|
||||||
which will point to the most recently built shared library. This is
|
which will point to the most recently built shared library. This is
|
||||||
the file the Python wrapper loads by default.
|
the file the Python wrapper loads by default.
|
||||||
|
|
||||||
@ -1329,8 +1323,8 @@ LAMMPS is compiled with CUDA=yes.
|
|||||||
numa Nm :pre
|
numa Nm :pre
|
||||||
|
|
||||||
This option is only relevant when using pthreads with hwloc support.
|
This option is only relevant when using pthreads with hwloc support.
|
||||||
In this case Nm defines the number of NUMA regions (typicaly sockets)
|
In this case Nm defines the number of NUMA regions (typically sockets)
|
||||||
on a node which will be utilizied by a single MPI rank. By default Nm
|
on a node which will be utilized by a single MPI rank. By default Nm
|
||||||
= 1. If this option is used the total number of worker-threads per
|
= 1. If this option is used the total number of worker-threads per
|
||||||
MPI rank is threads*numa. Currently it is always almost better to
|
MPI rank is threads*numa. Currently it is always almost better to
|
||||||
assign at least one MPI rank per NUMA region, and leave numa set to
|
assign at least one MPI rank per NUMA region, and leave numa set to
|
||||||
@ -1394,7 +1388,7 @@ replica runs on on one or a few processors. Note that with MPI
|
|||||||
installed on a machine (e.g. your desktop), you can run on more
|
installed on a machine (e.g. your desktop), you can run on more
|
||||||
(virtual) processors than you have physical processors.
|
(virtual) processors than you have physical processors.
|
||||||
|
|
||||||
To run multiple independent simulatoins from one input script, using
|
To run multiple independent simulations from one input script, using
|
||||||
multiple partitions, see "Section 6.4"_Section_howto.html#howto_4
|
multiple partitions, see "Section 6.4"_Section_howto.html#howto_4
|
||||||
of the manual. World- and universe-style "variables"_variable.html
|
of the manual. World- and universe-style "variables"_variable.html
|
||||||
are useful in this context.
|
are useful in this context.
|
||||||
@ -1673,7 +1667,7 @@ The first section provides a global loop timing summary. The {loop time}
|
|||||||
is the total wall time for the section. The {Performance} line is
|
is the total wall time for the section. The {Performance} line is
|
||||||
provided for convenience to help predicting the number of loop
|
provided for convenience to help predicting the number of loop
|
||||||
continuations required and for comparing performance with other,
|
continuations required and for comparing performance with other,
|
||||||
similar MD codes. The {CPU use} line provides the CPU utilzation per
|
similar MD codes. The {CPU use} line provides the CPU utilization per
|
||||||
MPI task; it should be close to 100% times the number of OpenMP
|
MPI task; it should be close to 100% times the number of OpenMP
|
||||||
threads (or 1 of no OpenMP). Lower numbers correspond to delays due
|
threads (or 1 of no OpenMP). Lower numbers correspond to delays due
|
||||||
to file I/O or insufficient thread utilization.
|
to file I/O or insufficient thread utilization.
|
||||||
|
|||||||
@ -48,6 +48,7 @@ own sub-directories with their own Makefiles and/or README files.
|
|||||||
"chain"_#chain
|
"chain"_#chain
|
||||||
"colvars"_#colvars
|
"colvars"_#colvars
|
||||||
"createatoms"_#createatoms
|
"createatoms"_#createatoms
|
||||||
|
"doxygen"_#doxygen
|
||||||
"drude"_#drude
|
"drude"_#drude
|
||||||
"eam database"_#eamdb
|
"eam database"_#eamdb
|
||||||
"eam generate"_#eamgn
|
"eam generate"_#eamgn
|
||||||
@ -110,14 +111,21 @@ back-and-forth between the CHARMM MD code and LAMMPS.
|
|||||||
They are intended to make it easy to use CHARMM as a builder and as a
|
They are intended to make it easy to use CHARMM as a builder and as a
|
||||||
post-processor for LAMMPS. Using charmm2lammps.pl, you can convert a
|
post-processor for LAMMPS. Using charmm2lammps.pl, you can convert a
|
||||||
PDB file with associated CHARMM info, including CHARMM force field
|
PDB file with associated CHARMM info, including CHARMM force field
|
||||||
data, into its LAMMPS equivalent. Using lammps2pdb.pl you can convert
|
data, into its LAMMPS equivalent. Support for the CMAP correction of
|
||||||
LAMMPS atom dumps into PDB files.
|
CHARMM22 and later is available as an option. This tool can also add
|
||||||
|
solvent water molecules and Na+ or Cl- ions to the system.
|
||||||
|
Using lammps2pdb.pl you can convert LAMMPS atom dumps into PDB files.
|
||||||
|
|
||||||
See the README file in the ch2lmp sub-directory for more information.
|
See the README file in the ch2lmp sub-directory for more information.
|
||||||
|
|
||||||
These tools were created by Pieter in't Veld (pjintve at sandia.gov)
|
These tools were created by Pieter in't Veld (pjintve at sandia.gov)
|
||||||
and Paul Crozier (pscrozi at sandia.gov) at Sandia.
|
and Paul Crozier (pscrozi at sandia.gov) at Sandia.
|
||||||
|
|
||||||
|
CMAP support added and tested by Xiaohu Hu (hux2 at ornl.gov) and
|
||||||
|
Robert A. Latour (latourr at clemson.edu), David Hyde-Volpe, and
|
||||||
|
Tigran Abramyan, (Clemson University) and
|
||||||
|
Chris Lorenz (chris.lorenz at kcl.ac.uk), King's College London.
|
||||||
|
|
||||||
:line
|
:line
|
||||||
|
|
||||||
chain tool :h4,link(chain)
|
chain tool :h4,link(chain)
|
||||||
@ -172,6 +180,18 @@ The tool is authored by Xiaowang Zhou (Sandia), xzhou at sandia.gov.
|
|||||||
|
|
||||||
:line
|
:line
|
||||||
|
|
||||||
|
doxygen tool :h4,link(doxygen)
|
||||||
|
|
||||||
|
The tools/doxygen directory contains a shell script called
|
||||||
|
doxygen.sh which can generate a call graph and API lists using
|
||||||
|
the "Doxygen"_http://doxygen.org software.
|
||||||
|
|
||||||
|
See the included README file for details.
|
||||||
|
|
||||||
|
The tool is authored by Nandor Tamaskovics, numericalfreedom at googlemail.com.
|
||||||
|
|
||||||
|
:line
|
||||||
|
|
||||||
drude tool :h4,link(drude)
|
drude tool :h4,link(drude)
|
||||||
|
|
||||||
The tools/drude directory contains a Python script called
|
The tools/drude directory contains a Python script called
|
||||||
|
|||||||
@ -25,14 +25,14 @@ LAMMPS to run on the CPU cores and coprocessor cores simultaneously.
|
|||||||
[Currently Available USER-INTEL Styles:]
|
[Currently Available USER-INTEL Styles:]
|
||||||
|
|
||||||
Angle Styles: charmm, harmonic :ulb,l
|
Angle Styles: charmm, harmonic :ulb,l
|
||||||
Bond Styles: fene, harmonic :l
|
Bond Styles: fene, fourier, harmonic :l
|
||||||
Dihedral Styles: charmm, harmonic, opls :l
|
Dihedral Styles: charmm, harmonic, opls :l
|
||||||
Fixes: nve, npt, nvt, nvt/sllod :l
|
Fixes: nve, npt, nvt, nvt/sllod, nve/asphere :l
|
||||||
Improper Styles: cvff, harmonic :l
|
Improper Styles: cvff, harmonic :l
|
||||||
Pair Styles: airebo, airebo/morse, buck/coul/cut, buck/coul/long,
|
Pair Styles: airebo, airebo/morse, buck/coul/cut, buck/coul/long,
|
||||||
buck, eam, eam/alloy, eam/fs, gayberne, lj/charmm/coul/charmm,
|
buck, dpd, eam, eam/alloy, eam/fs, gayberne, lj/charmm/coul/charmm,
|
||||||
lj/charmm/coul/long, lj/cut, lj/cut/coul/long, lj/long/coul/long, rebo,
|
lj/charmm/coul/long, lj/cut, lj/cut/coul/long, lj/long/coul/long,
|
||||||
sw, tersoff :l
|
rebo, sw, tersoff :l
|
||||||
K-Space Styles: pppm, pppm/disp :l
|
K-Space Styles: pppm, pppm/disp :l
|
||||||
:ule
|
:ule
|
||||||
|
|
||||||
@ -54,11 +54,12 @@ warmup run (for use with offload benchmarks).
|
|||||||
:c,image(JPG/user_intel.png)
|
:c,image(JPG/user_intel.png)
|
||||||
|
|
||||||
Results are speedups obtained on Intel Xeon E5-2697v4 processors
|
Results are speedups obtained on Intel Xeon E5-2697v4 processors
|
||||||
(code-named Broadwell) and Intel Xeon Phi 7250 processors
|
(code-named Broadwell), Intel Xeon Phi 7250 processors (code-named
|
||||||
(code-named Knights Landing) with "June 2017" LAMMPS built with
|
Knights Landing), and Intel Xeon Gold 6148 processors (code-named
|
||||||
Intel Parallel Studio 2017 update 2. Results are with 1 MPI task
|
Skylake) with "June 2017" LAMMPS built with Intel Parallel Studio
|
||||||
per physical core. See {src/USER-INTEL/TEST/README} for the raw
|
2017 update 2. Results are with 1 MPI task per physical core. See
|
||||||
simulation rates and instructions to reproduce.
|
{src/USER-INTEL/TEST/README} for the raw simulation rates and
|
||||||
|
instructions to reproduce.
|
||||||
|
|
||||||
:line
|
:line
|
||||||
|
|
||||||
@ -77,11 +78,16 @@ order of operations compared to LAMMPS without acceleration:
|
|||||||
Neighbor lists can be created in a different order :ulb,l
|
Neighbor lists can be created in a different order :ulb,l
|
||||||
Bins used for sorting atoms can be oriented differently :l
|
Bins used for sorting atoms can be oriented differently :l
|
||||||
The default stencil order for PPPM is 7. By default, LAMMPS will
|
The default stencil order for PPPM is 7. By default, LAMMPS will
|
||||||
calculate other PPPM parameters to fit the desired acuracy with
|
calculate other PPPM parameters to fit the desired accuracy with
|
||||||
this order :l
|
this order :l
|
||||||
The {newton} setting applies to all atoms, not just atoms shared
|
The {newton} setting applies to all atoms, not just atoms shared
|
||||||
between MPI tasks :l
|
between MPI tasks :l
|
||||||
Vectorization can change the order for adding pairwise forces :l
|
Vectorization can change the order for adding pairwise forces :l
|
||||||
|
When using the -DLMP_USE_MKL_RNG define (all included intel optimized
|
||||||
|
makefiles do) at build time, the random number generator for
|
||||||
|
dissipative particle dynamics (pair style dpd/intel) uses the Mersenne
|
||||||
|
Twister generator included in the Intel MKL library (that should be
|
||||||
|
more robust than the default Masaglia random number generator) :l
|
||||||
:ule
|
:ule
|
||||||
|
|
||||||
The precision mode (described below) used with the USER-INTEL
|
The precision mode (described below) used with the USER-INTEL
|
||||||
@ -108,7 +114,7 @@ $t should be 2 for Intel Xeon CPUs and 2 or 4 for Intel Xeon Phi :l
|
|||||||
For some of the simple 2-body potentials without long-range
|
For some of the simple 2-body potentials without long-range
|
||||||
electrostatics, performance and scalability can be better with
|
electrostatics, performance and scalability can be better with
|
||||||
the "newton off" setting added to the input script :l
|
the "newton off" setting added to the input script :l
|
||||||
For simulations on higher node counts, add "processors * * * grid
|
For simulations on higher node counts, add "processors * * * grid
|
||||||
numa" to the beginning of the input script for better scalability :l
|
numa" to the beginning of the input script for better scalability :l
|
||||||
If using {kspace_style pppm} in the input script, add
|
If using {kspace_style pppm} in the input script, add
|
||||||
"kspace_modify diff ad" for better performance :l
|
"kspace_modify diff ad" for better performance :l
|
||||||
@ -119,8 +125,8 @@ For Intel Xeon Phi CPUs:
|
|||||||
Runs should be performed using MCDRAM. :ulb,l
|
Runs should be performed using MCDRAM. :ulb,l
|
||||||
:ule
|
:ule
|
||||||
|
|
||||||
For simulations using {kspace_style pppm} on Intel CPUs
|
For simulations using {kspace_style pppm} on Intel CPUs supporting
|
||||||
supporting AVX-512:
|
AVX-512:
|
||||||
|
|
||||||
Add "kspace_modify diff ad" to the input script :ulb,l
|
Add "kspace_modify diff ad" to the input script :ulb,l
|
||||||
The command-line option should be changed to
|
The command-line option should be changed to
|
||||||
@ -237,14 +243,17 @@ However, if you do not have coprocessors on your system, building
|
|||||||
without offload support will produce a smaller binary.
|
without offload support will produce a smaller binary.
|
||||||
|
|
||||||
The general requirements for Makefiles with the USER-INTEL package
|
The general requirements for Makefiles with the USER-INTEL package
|
||||||
are as follows. "-DLAMMPS_MEMALIGN=64" is required for CCFLAGS. When
|
are as follows. When using Intel compilers, "-restrict" is required
|
||||||
using Intel compilers, "-restrict" is required and "-qopenmp" is
|
and "-qopenmp" is highly recommended for CCFLAGS and LINKFLAGS.
|
||||||
highly recommended for CCFLAGS and LINKFLAGS. LIB should include
|
CCFLAGS should include "-DLMP_INTEL_USELRT" (unless POSIX Threads
|
||||||
"-ltbbmalloc". For builds supporting offload, "-DLMP_INTEL_OFFLOAD"
|
are not supported in the build environment) and "-DLMP_USE_MKL_RNG"
|
||||||
is required for CCFLAGS and "-qoffload" is required for LINKFLAGS.
|
(unless Intel Math Kernel Library (MKL) is not available in the build
|
||||||
Other recommended CCFLAG options for best performance are
|
environment). For Intel compilers, LIB should include "-ltbbmalloc"
|
||||||
"-O2 -fno-alias -ansi-alias -qoverride-limits fp-model fast=2
|
or if the library is not available, "-DLMP_INTEL_NO_TBB" can be added
|
||||||
-no-prec-div".
|
to CCFLAGS. For builds supporting offload, "-DLMP_INTEL_OFFLOAD" is
|
||||||
|
required for CCFLAGS and "-qoffload" is required for LINKFLAGS. Other
|
||||||
|
recommended CCFLAG options for best performance are "-O2 -fno-alias
|
||||||
|
-ansi-alias -qoverride-limits fp-model fast=2 -no-prec-div".
|
||||||
|
|
||||||
NOTE: The vectorization and math capabilities can differ depending on
|
NOTE: The vectorization and math capabilities can differ depending on
|
||||||
the CPU. For Intel compilers, the "-x" flag specifies the type of
|
the CPU. For Intel compilers, the "-x" flag specifies the type of
|
||||||
@ -361,10 +370,14 @@ intel"_package.html command that can improve performance when using
|
|||||||
"PPPM"_kspace_style.html for long-range electrostatics on processors
|
"PPPM"_kspace_style.html for long-range electrostatics on processors
|
||||||
with SMT. It generates an extra pthread for each MPI task. The thread
|
with SMT. It generates an extra pthread for each MPI task. The thread
|
||||||
is dedicated to performing some of the PPPM calculations and MPI
|
is dedicated to performing some of the PPPM calculations and MPI
|
||||||
communications. On Intel Xeon Phi x200 series CPUs, this will likely
|
communications. This feature requires setting the preprocessor flag
|
||||||
always improve performance, even on a single node. On Intel Xeon
|
-DLMP_INTEL_USELRT in the makefile when compiling LAMMPS. It is unset
|
||||||
processors, using this mode might result in better performance when
|
in the default makefiles ({Makefile.mpi} and {Makefile.serial}) but
|
||||||
using multiple nodes, depending on the machine. To use this mode,
|
it is set in all makefiles tuned for the USER-INTEL package. On Intel
|
||||||
|
Xeon Phi x200 series CPUs, the LRT feature will likely improve
|
||||||
|
performance, even on a single node. On Intel Xeon processors, using
|
||||||
|
this mode might result in better performance when using multiple nodes,
|
||||||
|
depending on the specific machine configuration. To enable LRT mode,
|
||||||
specify that the number of OpenMP threads is one less than would
|
specify that the number of OpenMP threads is one less than would
|
||||||
normally be used for the run and add the "lrt yes" option to the "-pk"
|
normally be used for the run and add the "lrt yes" option to the "-pk"
|
||||||
command-line suffix or "package intel" command. For example, if a run
|
command-line suffix or "package intel" command. For example, if a run
|
||||||
|
|||||||
@ -11,336 +11,346 @@
|
|||||||
|
|
||||||
5.3.3 KOKKOS package :h5
|
5.3.3 KOKKOS package :h5
|
||||||
|
|
||||||
The KOKKOS package was developed primarily by Christian Trott (Sandia)
|
Kokkos is a templated C++ library that provides abstractions to allow
|
||||||
with contributions of various styles by others, including Sikandar
|
a single implementation of an application kernel (e.g. a pair style) to run efficiently on
|
||||||
Mashayak (UIUC), Stan Moore (Sandia), and Ray Shan (Sandia). The
|
different kinds of hardware, such as GPUs, Intel Xeon Phis, or many-core
|
||||||
underlying Kokkos library was written primarily by Carter Edwards,
|
CPUs. Kokkos maps the C++ kernel onto different backend languages such as CUDA, OpenMP, or Pthreads.
|
||||||
|
The Kokkos library also provides data abstractions to adjust (at
|
||||||
|
compile time) the memory layout of data structures like 2d and
|
||||||
|
3d arrays to optimize performance on different hardware. For more information on Kokkos, see
|
||||||
|
"Github"_https://github.com/kokkos/kokkos. Kokkos is part of
|
||||||
|
"Trilinos"_http://trilinos.sandia.gov/packages/kokkos. The Kokkos library was written primarily by Carter Edwards,
|
||||||
Christian Trott, and Dan Sunderland (all Sandia).
|
Christian Trott, and Dan Sunderland (all Sandia).
|
||||||
|
|
||||||
The KOKKOS package contains versions of pair, fix, and atom styles
|
The LAMMPS KOKKOS package contains versions of pair, fix, and atom styles
|
||||||
that use data structures and macros provided by the Kokkos library,
|
that use data structures and macros provided by the Kokkos library,
|
||||||
which is included with LAMMPS in lib/kokkos.
|
which is included with LAMMPS in /lib/kokkos. The KOKKOS package was developed primarily by Christian Trott (Sandia)
|
||||||
|
and Stan Moore (Sandia) with contributions of various styles by others, including Sikandar
|
||||||
The Kokkos library is part of
|
Mashayak (UIUC), Ray Shan (Sandia), and Dan Ibanez (Sandia). For more information on developing using Kokkos abstractions
|
||||||
"Trilinos"_http://trilinos.sandia.gov/packages/kokkos and can also be
|
see the Kokkos programmers' guide at /lib/kokkos/doc/Kokkos_PG.pdf.
|
||||||
downloaded from "Github"_https://github.com/kokkos/kokkos. Kokkos is a
|
|
||||||
templated C++ library that provides two key abstractions for an
|
|
||||||
application like LAMMPS. First, it allows a single implementation of
|
|
||||||
an application kernel (e.g. a pair style) to run efficiently on
|
|
||||||
different kinds of hardware, such as a GPU, Intel Phi, or many-core
|
|
||||||
CPU.
|
|
||||||
|
|
||||||
The Kokkos library also provides data abstractions to adjust (at
|
|
||||||
compile time) the memory layout of basic data structures like 2d and
|
|
||||||
3d arrays and allow the transparent utilization of special hardware
|
|
||||||
load and store operations. Such data structures are used in LAMMPS to
|
|
||||||
store atom coordinates or forces or neighbor lists. The layout is
|
|
||||||
chosen to optimize performance on different platforms. Again this
|
|
||||||
functionality is hidden from the developer, and does not affect how
|
|
||||||
the kernel is coded.
|
|
||||||
|
|
||||||
These abstractions are set at build time, when LAMMPS is compiled with
|
|
||||||
the KOKKOS package installed. All Kokkos operations occur within the
|
|
||||||
context of an individual MPI task running on a single node of the
|
|
||||||
machine. The total number of MPI tasks used by LAMMPS (one or
|
|
||||||
multiple per compute node) is set in the usual manner via the mpirun
|
|
||||||
or mpiexec commands, and is independent of Kokkos.
|
|
||||||
|
|
||||||
Kokkos currently provides support for 3 modes of execution (per MPI
|
Kokkos currently provides support for 3 modes of execution (per MPI
|
||||||
task). These are OpenMP (for many-core CPUs), Cuda (for NVIDIA GPUs),
|
task). These are Serial (MPI-only for CPUs and Intel Phi), OpenMP (threading
|
||||||
and OpenMP (for Intel Phi). Note that the KOKKOS package supports
|
for many-core CPUs and Intel Phi), and CUDA (for NVIDIA GPUs). You choose the mode at build time to
|
||||||
running on the Phi in native mode, not offload mode like the
|
|
||||||
USER-INTEL package supports. You choose the mode at build time to
|
|
||||||
produce an executable compatible with specific hardware.
|
produce an executable compatible with specific hardware.
|
||||||
|
|
||||||
Here is a quick overview of how to use the KOKKOS package
|
|
||||||
for CPU acceleration, assuming one or more 16-core nodes.
|
|
||||||
More details follow.
|
|
||||||
|
|
||||||
use a C++11 compatible compiler
|
|
||||||
make yes-kokkos
|
|
||||||
make mpi KOKKOS_DEVICES=OpenMP # build with the KOKKOS package
|
|
||||||
make kokkos_omp # or Makefile.kokkos_omp already has variable set :pre
|
|
||||||
|
|
||||||
mpirun -np 16 lmp_mpi -k on -sf kk -in in.lj # 1 node, 16 MPI tasks/node, no threads
|
|
||||||
mpirun -np 2 -ppn 1 lmp_mpi -k on t 16 -sf kk -in in.lj # 2 nodes, 1 MPI task/node, 16 threads/task
|
|
||||||
mpirun -np 2 lmp_mpi -k on t 8 -sf kk -in in.lj # 1 node, 2 MPI tasks/node, 8 threads/task
|
|
||||||
mpirun -np 32 -ppn 4 lmp_mpi -k on t 4 -sf kk -in in.lj # 8 nodes, 4 MPI tasks/node, 4 threads/task :pre
|
|
||||||
|
|
||||||
specify variables and settings in your Makefile.machine that enable OpenMP, GPU, or Phi support
|
|
||||||
include the KOKKOS package and build LAMMPS
|
|
||||||
enable the KOKKOS package and its hardware options via the "-k on" command-line switch use KOKKOS styles in your input script :ul
|
|
||||||
|
|
||||||
Here is a quick overview of how to use the KOKKOS package for GPUs,
|
|
||||||
assuming one or more nodes, each with 16 cores and a GPU. More
|
|
||||||
details follow.
|
|
||||||
|
|
||||||
discuss use of NVCC, which Makefiles to examine
|
|
||||||
|
|
||||||
use a C++11 compatible compiler
|
|
||||||
KOKKOS_DEVICES = Cuda, OpenMP
|
|
||||||
KOKKOS_ARCH = Kepler35
|
|
||||||
make yes-kokkos
|
|
||||||
make machine :pre
|
|
||||||
|
|
||||||
mpirun -np 1 lmp_cuda -k on t 6 -sf kk -in in.lj # one MPI task, 6 threads on CPU
|
|
||||||
mpirun -np 4 -ppn 1 lmp_cuda -k on t 6 -sf kk -in in.lj # ditto on 4 nodes :pre
|
|
||||||
|
|
||||||
mpirun -np 2 lmp_cuda -k on t 8 g 2 -sf kk -in in.lj # two MPI tasks, 8 threads per CPU
|
|
||||||
mpirun -np 32 -ppn 2 lmp_cuda -k on t 8 g 2 -sf kk -in in.lj # ditto on 16 nodes :pre
|
|
||||||
|
|
||||||
Here is a quick overview of how to use the KOKKOS package
|
|
||||||
for the Intel Phi:
|
|
||||||
|
|
||||||
use a C++11 compatible compiler
|
|
||||||
KOKKOS_DEVICES = OpenMP
|
|
||||||
KOKKOS_ARCH = KNC
|
|
||||||
make yes-kokkos
|
|
||||||
make machine :pre
|
|
||||||
|
|
||||||
host=MIC, Intel Phi with 61 cores (240 threads/phi via 4x hardware threading):
|
|
||||||
mpirun -np 1 lmp_g++ -k on t 240 -sf kk -in in.lj # 1 MPI task on 1 Phi, 1*240 = 240
|
|
||||||
mpirun -np 30 lmp_g++ -k on t 8 -sf kk -in in.lj # 30 MPI tasks on 1 Phi, 30*8 = 240
|
|
||||||
mpirun -np 12 lmp_g++ -k on t 20 -sf kk -in in.lj # 12 MPI tasks on 1 Phi, 12*20 = 240
|
|
||||||
mpirun -np 96 -ppn 12 lmp_g++ -k on t 20 -sf kk -in in.lj # ditto on 8 Phis :pre
|
|
||||||
|
|
||||||
[Required hardware/software:]
|
|
||||||
|
|
||||||
Kokkos support within LAMMPS must be built with a C++11 compatible
|
|
||||||
compiler. If using gcc, version 4.7.2 or later is required.
|
|
||||||
|
|
||||||
To build with Kokkos support for CPUs, your compiler must support the
|
|
||||||
OpenMP interface. You should have one or more multi-core CPUs so that
|
|
||||||
multiple threads can be launched by each MPI task running on a CPU.
|
|
||||||
|
|
||||||
To build with Kokkos support for NVIDIA GPUs, NVIDIA CUDA software
|
|
||||||
version 7.5 or later must be installed on your system. See the
|
|
||||||
discussion for the "GPU"_accelerate_gpu.html package for details of
|
|
||||||
how to check and do this.
|
|
||||||
|
|
||||||
NOTE: For good performance of the KOKKOS package on GPUs, you must
|
|
||||||
have Kepler generation GPUs (or later). The Kokkos library exploits
|
|
||||||
texture cache options not supported by Telsa generation GPUs (or
|
|
||||||
older).
|
|
||||||
|
|
||||||
To build with Kokkos support for Intel Xeon Phi coprocessors, your
|
|
||||||
sysmte must be configured to use them in "native" mode, not "offload"
|
|
||||||
mode like the USER-INTEL package supports.
|
|
||||||
|
|
||||||
[Building LAMMPS with the KOKKOS package:]
|
[Building LAMMPS with the KOKKOS package:]
|
||||||
|
|
||||||
You must choose at build time whether to build for CPUs (OpenMP),
|
NOTE: Kokkos support within LAMMPS must be built with a C++11 compatible
|
||||||
GPUs, or Phi.
|
compiler. This means GCC version 4.7.2 or later, Intel 14.0.4 or later, or
|
||||||
|
Clang 3.5.2 or later is required.
|
||||||
|
|
||||||
You can do any of these in one line, using the suitable make command
|
The recommended method of building the KOKKOS package is to start with the provided Kokkos
|
||||||
line flags as described in "Section 4"_Section_packages.html of the
|
Makefiles in /src/MAKE/OPTIONS/. You may need to modify the KOKKOS_ARCH variable in the Makefile
|
||||||
manual. If run from the src directory, these
|
to match your specific hardware. For example:
|
||||||
commands will create src/lmp_kokkos_omp, lmp_kokkos_cuda, and
|
|
||||||
lmp_kokkos_phi. Note that the OMP and PHI options use
|
|
||||||
src/MAKE/Makefile.mpi as the starting Makefile.machine. The CUDA
|
|
||||||
option uses src/MAKE/OPTIONS/Makefile.kokkos_cuda.
|
|
||||||
|
|
||||||
The latter two steps can be done using the "-k on", "-pk kokkos" and
|
for Sandy Bridge CPUs, set KOKKOS_ARCH=SNB
|
||||||
"-sf kk" "command-line switches"_Section_start.html#start_6
|
for Broadwell CPUs, set KOKKOS_ARCH=BWD
|
||||||
respectively. Or the effect of the "-pk" or "-sf" switches can be
|
for K80 GPUs, set KOKKOS_ARCH=Kepler37
|
||||||
duplicated by adding the "package kokkos"_package.html or "suffix
|
for P100 GPUs and Power8 CPUs, set KOKKOS_ARCH=Pascal60,Power8 :ul
|
||||||
kk"_suffix.html commands respectively to your input script.
|
|
||||||
|
|
||||||
|
See the [Advanced Kokkos Options] section below for a listing of all KOKKOS_ARCH options.
|
||||||
|
|
||||||
Or you can follow these steps:
|
[Compile for CPU-only (MPI only, no threading):]
|
||||||
|
|
||||||
CPU-only (run all-MPI or with OpenMP threading):
|
use a C++11 compatible compiler and set KOKKOS_ARCH variable in
|
||||||
|
/src/MAKE/OPTIONS/Makefile.kokkos_mpi_only as described above. Then do the
|
||||||
|
following:
|
||||||
|
|
||||||
|
cd lammps/src
|
||||||
|
make yes-kokkos
|
||||||
|
make kokkos_mpi_only :pre
|
||||||
|
|
||||||
|
[Compile for CPU-only (MPI plus OpenMP threading):]
|
||||||
|
|
||||||
|
NOTE: To build with Kokkos support for OpenMP threading, your compiler must support the
|
||||||
|
OpenMP interface. You should have one or more multi-core CPUs so that
|
||||||
|
multiple threads can be launched by each MPI task running on a CPU.
|
||||||
|
|
||||||
|
use a C++11 compatible compiler and set KOKKOS_ARCH variable in
|
||||||
|
/src/MAKE/OPTIONS/Makefile.kokkos_omp as described above. Then do the
|
||||||
|
following:
|
||||||
|
|
||||||
cd lammps/src
|
cd lammps/src
|
||||||
make yes-kokkos
|
make yes-kokkos
|
||||||
make kokkos_omp :pre
|
make kokkos_omp :pre
|
||||||
|
|
||||||
CPU-only (only MPI, no threading):
|
[Compile for Intel KNL Xeon Phi (Intel Compiler, OpenMPI):]
|
||||||
|
|
||||||
cd lammps/src
|
use a C++11 compatible compiler and do the following:
|
||||||
make yes-kokkos
|
|
||||||
make kokkos_mpi :pre
|
|
||||||
|
|
||||||
Intel Xeon Phi (Intel Compiler, Intel MPI):
|
|
||||||
|
|
||||||
cd lammps/src
|
cd lammps/src
|
||||||
make yes-kokkos
|
make yes-kokkos
|
||||||
make kokkos_phi :pre
|
make kokkos_phi :pre
|
||||||
|
|
||||||
CPUs and GPUs (with MPICH):
|
[Compile for CPUs and GPUs (with OpenMPI or MPICH):]
|
||||||
|
|
||||||
|
NOTE: To build with Kokkos support for NVIDIA GPUs, NVIDIA CUDA software
|
||||||
|
version 7.5 or later must be installed on your system. See the
|
||||||
|
discussion for the "GPU"_accelerate_gpu.html package for details of
|
||||||
|
how to check and do this.
|
||||||
|
|
||||||
|
use a C++11 compatible compiler and set KOKKOS_ARCH variable in
|
||||||
|
/src/MAKE/OPTIONS/Makefile.kokkos_cuda_mpi for both GPU and CPU as described
|
||||||
|
above. Then do the following:
|
||||||
|
|
||||||
cd lammps/src
|
cd lammps/src
|
||||||
make yes-kokkos
|
make yes-kokkos
|
||||||
make kokkos_cuda_mpich :pre
|
make kokkos_cuda_mpi :pre
|
||||||
|
|
||||||
These examples set the KOKKOS-specific OMP, MIC, CUDA variables on the
|
[Alternative Methods of Compiling:]
|
||||||
make command line which requires a GNU-compatible make command. Try
|
|
||||||
|
Alternatively, the KOKKOS package can be built by specifying Kokkos variables
|
||||||
|
on the make command line. For example:
|
||||||
|
|
||||||
|
make mpi KOKKOS_DEVICES=OpenMP KOKKOS_ARCH=SNB # set the KOKKOS_DEVICES and KOKKOS_ARCH variable explicitly
|
||||||
|
make kokkos_cuda_mpi KOKKOS_ARCH=Pascal60,Power8 # set the KOKKOS_ARCH variable explicitly :pre
|
||||||
|
|
||||||
|
Setting the KOKKOS_DEVICES and KOKKOS_ARCH variables on the
|
||||||
|
make command line requires a GNU-compatible make command. Try
|
||||||
"gmake" if your system's standard make complains.
|
"gmake" if your system's standard make complains.
|
||||||
|
|
||||||
NOTE: If you build using make line variables and re-build LAMMPS twice
|
NOTE: If you build using make line variables and re-build LAMMPS twice
|
||||||
with different KOKKOS options and the *same* target, e.g. g++ in the
|
with different KOKKOS options and the *same* target, then you *must* perform a "make clean-all"
|
||||||
first two examples above, then you *must* perform a "make clean-all"
|
or "make clean-machine" before each build. This is to force all the
|
||||||
or "make clean-machine" before each build. This is to force all the
|
|
||||||
KOKKOS-dependent files to be re-compiled with the new options.
|
KOKKOS-dependent files to be re-compiled with the new options.
|
||||||
|
|
||||||
NOTE: Currently, there are no precision options with the KOKKOS
|
[Running LAMMPS with the KOKKOS package:]
|
||||||
package. All compilation and computation is performed in double
|
|
||||||
precision.
|
|
||||||
|
|
||||||
There are other allowed options when building with the KOKKOS package.
|
All Kokkos operations occur within the
|
||||||
As above, they can be set either as variables on the make command line
|
context of an individual MPI task running on a single node of the
|
||||||
or in Makefile.machine. This is the full list of options, including
|
machine. The total number of MPI tasks used by LAMMPS (one or
|
||||||
those discussed above, Each takes a value shown below. The
|
multiple per compute node) is set in the usual manner via the mpirun
|
||||||
default value is listed, which is set in the
|
or mpiexec commands, and is independent of Kokkos. E.g. the mpirun
|
||||||
lib/kokkos/Makefile.kokkos file.
|
command in OpenMPI does this via its
|
||||||
|
-np and -npernode switches. Ditto for MPICH via -np and -ppn.
|
||||||
|
|
||||||
#Default settings specific options
|
[Running on a multi-core CPU:]
|
||||||
#Options: force_uvm,use_ldg,rdc
|
|
||||||
|
|
||||||
KOKKOS_DEVICES, values = {OpenMP}, {Serial}, {Pthreads}, {Cuda}, default = {OpenMP}
|
Here is a quick overview of how to use the KOKKOS package
|
||||||
KOKKOS_ARCH, values = {KNC}, {SNB}, {HSW}, {Kepler}, {Kepler30}, {Kepler32}, {Kepler35}, {Kepler37}, {Maxwell}, {Maxwell50}, {Maxwell52}, {Maxwell53}, {ARMv8}, {BGQ}, {Power7}, {Power8}, default = {none}
|
for CPU acceleration, assuming one or more 16-core nodes.
|
||||||
KOKKOS_DEBUG, values = {yes}, {no}, default = {no}
|
|
||||||
KOKKOS_USE_TPLS, values = {hwloc}, {librt}, default = {none}
|
|
||||||
KOKKOS_CUDA_OPTIONS, values = {force_uvm}, {use_ldg}, {rdc} :ul
|
|
||||||
|
|
||||||
KOKKOS_DEVICE sets the parallelization method used for Kokkos code
|
mpirun -np 16 lmp_kokkos_mpi_only -k on -sf kk -in in.lj # 1 node, 16 MPI tasks/node, no multi-threading
|
||||||
(within LAMMPS). KOKKOS_DEVICES=OpenMP means that OpenMP will be
|
mpirun -np 2 -ppn 1 lmp_kokkos_omp -k on t 16 -sf kk -in in.lj # 2 nodes, 1 MPI task/node, 16 threads/task
|
||||||
used. KOKKOS_DEVICES=Pthreads means that pthreads will be used.
|
mpirun -np 2 lmp_kokkos_omp -k on t 8 -sf kk -in in.lj # 1 node, 2 MPI tasks/node, 8 threads/task
|
||||||
KOKKOS_DEVICES=Cuda means an NVIDIA GPU running CUDA will be used.
|
mpirun -np 32 -ppn 4 lmp_kokkos_omp -k on t 4 -sf kk -in in.lj # 8 nodes, 4 MPI tasks/node, 4 threads/task :pre
|
||||||
|
|
||||||
If KOKKOS_DEVICES=Cuda, then the lo-level Makefile in the src/MAKE
|
|
||||||
directory must use "nvcc" as its compiler, via its CC setting. For
|
|
||||||
best performance its CCFLAGS setting should use -O3 and have a
|
|
||||||
KOKKOS_ARCH setting that matches the compute capability of your NVIDIA
|
|
||||||
hardware and software installation, e.g. KOKKOS_ARCH=Kepler30. Note
|
|
||||||
the minimal required compute capability is 2.0, but this will give
|
|
||||||
significantly reduced performance compared to Kepler generation GPUs
|
|
||||||
with compute capability 3.x. For the LINK setting, "nvcc" should not
|
|
||||||
be used; instead use g++ or another compiler suitable for linking C++
|
|
||||||
applications. Often you will want to use your MPI compiler wrapper
|
|
||||||
for this setting (i.e. mpicxx). Finally, the lo-level Makefile must
|
|
||||||
also have a "Compilation rule" for creating *.o files from *.cu files.
|
|
||||||
See src/Makefile.cuda for an example of a lo-level Makefile with all
|
|
||||||
of these settings.
|
|
||||||
|
|
||||||
KOKKOS_USE_TPLS=hwloc binds threads to hardware cores, so they do not
|
|
||||||
migrate during a simulation. KOKKOS_USE_TPLS=hwloc should always be
|
|
||||||
used if running with KOKKOS_DEVICES=Pthreads for pthreads. It is not
|
|
||||||
necessary for KOKKOS_DEVICES=OpenMP for OpenMP, because OpenMP
|
|
||||||
provides alternative methods via environment variables for binding
|
|
||||||
threads to hardware cores. More info on binding threads to cores is
|
|
||||||
given in "Section 5.3"_Section_accelerate.html#acc_3.
|
|
||||||
|
|
||||||
KOKKOS_ARCH=KNC enables compiler switches needed when compiling for an
|
|
||||||
Intel Phi processor.
|
|
||||||
|
|
||||||
KOKKOS_USE_TPLS=librt enables use of a more accurate timer mechanism
|
|
||||||
on most Unix platforms. This library is not available on all
|
|
||||||
platforms.
|
|
||||||
|
|
||||||
KOKKOS_DEBUG is only useful when developing a Kokkos-enabled style
|
|
||||||
within LAMMPS. KOKKOS_DEBUG=yes enables printing of run-time
|
|
||||||
debugging information that can be useful. It also enables runtime
|
|
||||||
bounds checking on Kokkos data structures.
|
|
||||||
|
|
||||||
KOKKOS_CUDA_OPTIONS are additional options for CUDA.
|
|
||||||
|
|
||||||
For more information on Kokkos see the Kokkos programmers' guide here:
|
|
||||||
/lib/kokkos/doc/Kokkos_PG.pdf.
|
|
||||||
|
|
||||||
[Run with the KOKKOS package from the command line:]
|
|
||||||
|
|
||||||
The mpirun or mpiexec command sets the total number of MPI tasks used
|
|
||||||
by LAMMPS (one or multiple per compute node) and the number of MPI
|
|
||||||
tasks used per node. E.g. the mpirun command in MPICH does this via
|
|
||||||
its -np and -ppn switches. Ditto for OpenMPI via -np and -npernode.
|
|
||||||
|
|
||||||
When using KOKKOS built with host=OMP, you need to choose how many
|
|
||||||
OpenMP threads per MPI task will be used (via the "-k" command-line
|
|
||||||
switch discussed below). Note that the product of MPI tasks * OpenMP
|
|
||||||
threads/task should not exceed the physical number of cores (on a
|
|
||||||
node), otherwise performance will suffer.
|
|
||||||
|
|
||||||
When using the KOKKOS package built with device=CUDA, you must use
|
|
||||||
exactly one MPI task per physical GPU.
|
|
||||||
|
|
||||||
When using the KOKKOS package built with host=MIC for Intel Xeon Phi
|
|
||||||
coprocessor support you need to insure there are one or more MPI tasks
|
|
||||||
per coprocessor, and choose the number of coprocessor threads to use
|
|
||||||
per MPI task (via the "-k" command-line switch discussed below). The
|
|
||||||
product of MPI tasks * coprocessor threads/task should not exceed the
|
|
||||||
maximum number of threads the coprocessor is designed to run,
|
|
||||||
otherwise performance will suffer. This value is 240 for current
|
|
||||||
generation Xeon Phi(TM) chips, which is 60 physical cores * 4
|
|
||||||
threads/core. Note that with the KOKKOS package you do not need to
|
|
||||||
specify how many Phi coprocessors there are per node; each
|
|
||||||
coprocessors is simply treated as running some number of MPI tasks.
|
|
||||||
|
|
||||||
|
To run using the KOKKOS package, use the "-k on", "-sf kk" and "-pk kokkos" "command-line switches"_Section_start.html#start_7 in your mpirun command.
|
||||||
You must use the "-k on" "command-line
|
You must use the "-k on" "command-line
|
||||||
switch"_Section_start.html#start_6 to enable the KOKKOS package. It
|
switch"_Section_start.html#start_7 to enable the KOKKOS package. It
|
||||||
takes additional arguments for hardware settings appropriate to your
|
takes additional arguments for hardware settings appropriate to your
|
||||||
system. Those arguments are "documented
|
system. Those arguments are "documented
|
||||||
here"_Section_start.html#start_6. The two most commonly used
|
here"_Section_start.html#start_7. For OpenMP use:
|
||||||
options are:
|
|
||||||
|
|
||||||
-k on t Nt g Ng :pre
|
-k on t Nt :pre
|
||||||
|
|
||||||
The "t Nt" option applies to host=OMP (even if device=CUDA) and
|
|
||||||
host=MIC. For host=OMP, it specifies how many OpenMP threads per MPI
|
|
||||||
task to use with a node. For host=MIC, it specifies how many Xeon Phi
|
|
||||||
threads per MPI task to use within a node. The default is Nt = 1.
|
|
||||||
Note that for host=OMP this is effectively MPI-only mode which may be
|
|
||||||
fine. But for host=MIC you will typically end up using far less than
|
|
||||||
all the 240 available threads, which could give very poor performance.
|
|
||||||
|
|
||||||
The "g Ng" option applies to device=CUDA. It specifies how many GPUs
|
|
||||||
per compute node to use. The default is 1, so this only needs to be
|
|
||||||
specified is you have 2 or more GPUs per compute node.
|
|
||||||
|
|
||||||
|
The "t Nt" option specifies how many OpenMP threads per MPI
|
||||||
|
task to use with a node. The default is Nt = 1, which is MPI-only mode.
|
||||||
|
Note that the product of MPI tasks * OpenMP
|
||||||
|
threads/task should not exceed the physical number of cores (on a
|
||||||
|
node), otherwise performance will suffer. If hyperthreading is enabled, then
|
||||||
|
the product of MPI tasks * OpenMP threads/task should not exceed the
|
||||||
|
physical number of cores * hardware threads.
|
||||||
The "-k on" switch also issues a "package kokkos" command (with no
|
The "-k on" switch also issues a "package kokkos" command (with no
|
||||||
additional arguments) which sets various KOKKOS options to default
|
additional arguments) which sets various KOKKOS options to default
|
||||||
values, as discussed on the "package"_package.html command doc page.
|
values, as discussed on the "package"_package.html command doc page.
|
||||||
|
|
||||||
Use the "-sf kk" "command-line switch"_Section_start.html#start_6,
|
The "-sf kk" "command-line switch"_Section_start.html#start_7
|
||||||
which will automatically append "kk" to styles that support it. Use
|
will automatically append the "/kk" suffix to styles that support it.
|
||||||
the "-pk kokkos" "command-line switch"_Section_start.html#start_6 if
|
In this manner no modification to the input script is needed. Alternatively,
|
||||||
you wish to change any of the default "package kokkos"_package.html
|
one can run with the KOKKOS package by editing the input script as described below.
|
||||||
optionns set by the "-k on" "command-line
|
|
||||||
switch"_Section_start.html#start_6.
|
|
||||||
|
|
||||||
|
NOTE: The default for the "package kokkos"_package.html command is
|
||||||
|
|
||||||
Note that the default for the "package kokkos"_package.html command is
|
|
||||||
to use "full" neighbor lists and set the Newton flag to "off" for both
|
to use "full" neighbor lists and set the Newton flag to "off" for both
|
||||||
pairwise and bonded interactions. This typically gives fastest
|
pairwise and bonded interactions. However, when running on CPUs, it
|
||||||
performance. If the "newton"_newton.html command is used in the input
|
|
||||||
script, it can override the Newton flag defaults.
|
|
||||||
|
|
||||||
However, when running in MPI-only mode with 1 thread per MPI task, it
|
|
||||||
will typically be faster to use "half" neighbor lists and set the
|
will typically be faster to use "half" neighbor lists and set the
|
||||||
Newton flag to "on", just as is the case for non-accelerated pair
|
Newton flag to "on", just as is the case for non-accelerated pair
|
||||||
styles. You can do this with the "-pk" "command-line
|
styles. It can also be faster to use non-threaded communication.
|
||||||
switch"_Section_start.html#start_6.
|
Use the "-pk kokkos" "command-line switch"_Section_start.html#start_7 to
|
||||||
|
change the default "package kokkos"_package.html
|
||||||
|
options. See its doc page for details and default settings. Experimenting with
|
||||||
|
its options can provide a speed-up for specific calculations. For example:
|
||||||
|
|
||||||
[Or run with the KOKKOS package by editing an input script:]
|
mpirun -np 16 lmp_kokkos_mpi_only -k on -sf kk -pk kokkos newton on neigh half comm no -in in.lj # Newton on, Half neighbor list, non-threaded comm :pre
|
||||||
|
|
||||||
The discussion above for the mpirun/mpiexec command and setting
|
If the "newton"_newton.html command is used in the input
|
||||||
appropriate thread and GPU values for host=OMP or host=MIC or
|
script, it can also override the Newton flag defaults.
|
||||||
device=CUDA are the same.
|
|
||||||
|
[Core and Thread Affinity:]
|
||||||
|
|
||||||
|
When using multi-threading, it is important for
|
||||||
|
performance to bind both MPI tasks to physical cores, and threads to
|
||||||
|
physical cores, so they do not migrate during a simulation.
|
||||||
|
|
||||||
|
If you are not certain MPI tasks are being bound (check the defaults
|
||||||
|
for your MPI installation), binding can be forced with these flags:
|
||||||
|
|
||||||
|
OpenMPI 1.8: mpirun -np 2 --bind-to socket --map-by socket ./lmp_openmpi ...
|
||||||
|
Mvapich2 2.0: mpiexec -np 2 --bind-to socket --map-by socket ./lmp_mvapich ... :pre
|
||||||
|
|
||||||
|
For binding threads with KOKKOS OpenMP, use thread affinity
|
||||||
|
environment variables to force binding. With OpenMP 3.1 (gcc 4.7 or
|
||||||
|
later, intel 12 or later) setting the environment variable
|
||||||
|
OMP_PROC_BIND=true should be sufficient. In general, for best performance
|
||||||
|
with OpenMP 4.0 or better set OMP_PROC_BIND=spread and OMP_PLACES=threads.
|
||||||
|
For binding threads with the
|
||||||
|
KOKKOS pthreads option, compile LAMMPS the KOKKOS HWLOC=yes option
|
||||||
|
as described below.
|
||||||
|
|
||||||
|
[Running on Knight's Landing (KNL) Intel Xeon Phi:]
|
||||||
|
|
||||||
|
Here is a quick overview of how to use the KOKKOS package
|
||||||
|
for the Intel Knight's Landing (KNL) Xeon Phi:
|
||||||
|
|
||||||
|
KNL Intel Phi chips have 68 physical cores. Typically 1 to 4 cores
|
||||||
|
are reserved for the OS, and only 64 or 66 cores are used. Each core
|
||||||
|
has 4 hyperthreads,so there are effectively N = 256 (4*64) or
|
||||||
|
N = 264 (4*66) cores to run on. The product of MPI tasks * OpenMP threads/task should not exceed this limit,
|
||||||
|
otherwise performance will suffer. Note that with the KOKKOS package you do not need to
|
||||||
|
specify how many KNLs there are per node; each
|
||||||
|
KNL is simply treated as running some number of MPI tasks.
|
||||||
|
|
||||||
|
Examples of mpirun commands that follow these rules are shown below.
|
||||||
|
|
||||||
|
Intel KNL node with 68 cores (272 threads/node via 4x hardware threading):
|
||||||
|
mpirun -np 64 lmp_kokkos_phi -k on t 4 -sf kk -in in.lj # 1 node, 64 MPI tasks/node, 4 threads/task
|
||||||
|
mpirun -np 66 lmp_kokkos_phi -k on t 4 -sf kk -in in.lj # 1 node, 66 MPI tasks/node, 4 threads/task
|
||||||
|
mpirun -np 32 lmp_kokkos_phi -k on t 8 -sf kk -in in.lj # 1 node, 32 MPI tasks/node, 8 threads/task
|
||||||
|
mpirun -np 512 -ppn 64 lmp_kokkos_phi -k on t 4 -sf kk -in in.lj # 8 nodes, 64 MPI tasks/node, 4 threads/task :pre
|
||||||
|
|
||||||
|
The -np setting of the mpirun command sets the number of MPI
|
||||||
|
tasks/node. The "-k on t Nt" command-line switch sets the number of
|
||||||
|
threads/task as Nt. The product of these two values should be N, i.e.
|
||||||
|
256 or 264.
|
||||||
|
|
||||||
|
NOTE: The default for the "package kokkos"_package.html command is
|
||||||
|
to use "full" neighbor lists and set the Newton flag to "off" for both
|
||||||
|
pairwise and bonded interactions. When running on KNL, this
|
||||||
|
will typically be best for pair-wise potentials. For manybody potentials,
|
||||||
|
using "half" neighbor lists and setting the
|
||||||
|
Newton flag to "on" may be faster. It can also be faster to use non-threaded communication.
|
||||||
|
Use the "-pk kokkos" "command-line switch"_Section_start.html#start_7 to
|
||||||
|
change the default "package kokkos"_package.html
|
||||||
|
options. See its doc page for details and default settings. Experimenting with
|
||||||
|
its options can provide a speed-up for specific calculations. For example:
|
||||||
|
|
||||||
|
mpirun -np 64 lmp_kokkos_phi -k on t 4 -sf kk -pk kokkos comm no -in in.lj # Newton off, full neighbor list, non-threaded comm
|
||||||
|
mpirun -np 64 lmp_kokkos_phi -k on t 4 -sf kk -pk kokkos newton on neigh half comm no -in in.reax # Newton on, half neighbor list, non-threaded comm :pre
|
||||||
|
|
||||||
|
NOTE: MPI tasks and threads should be bound to cores as described above for CPUs.
|
||||||
|
|
||||||
|
NOTE: To build with Kokkos support for Intel Xeon Phi coprocessors such as Knight's Corner (KNC), your
|
||||||
|
system must be configured to use them in "native" mode, not "offload"
|
||||||
|
mode like the USER-INTEL package supports.
|
||||||
|
|
||||||
|
[Running on GPUs:]
|
||||||
|
|
||||||
|
Use the "-k" "command-line switch"_Section_commands.html#start_7 to
|
||||||
|
specify the number of GPUs per node. Typically the -np setting
|
||||||
|
of the mpirun command should set the number of MPI
|
||||||
|
tasks/node to be equal to the # of physical GPUs on the node.
|
||||||
|
You can assign multiple MPI tasks to the same GPU with the
|
||||||
|
KOKKOS package, but this is usually only faster if significant portions
|
||||||
|
of the input script have not been ported to use Kokkos. Using CUDA MPS
|
||||||
|
is recommended in this scenario. As above for multi-core CPUs (and no GPU), if N is the number
|
||||||
|
of physical cores/node, then the number of MPI tasks/node should not exceed N.
|
||||||
|
|
||||||
|
-k on g Ng :pre
|
||||||
|
|
||||||
|
Here are examples of how to use the KOKKOS package for GPUs,
|
||||||
|
assuming one or more nodes, each with two GPUs:
|
||||||
|
|
||||||
|
mpirun -np 2 lmp_kokkos_cuda_openmpi -k on g 2 -sf kk -in in.lj # 1 node, 2 MPI tasks/node, 2 GPUs/node
|
||||||
|
mpirun -np 32 -ppn 2 lmp_kokkos_cuda_openmpi -k on g 2 -sf kk -in in.lj # 16 nodes, 2 MPI tasks/node, 2 GPUs/node (32 GPUs total) :pre
|
||||||
|
|
||||||
|
NOTE: The default for the "package kokkos"_package.html command is
|
||||||
|
to use "full" neighbor lists and set the Newton flag to "off" for both
|
||||||
|
pairwise and bonded interactions, along with threaded communication.
|
||||||
|
When running on Maxwell or Kepler GPUs, this will typically be best. For Pascal GPUs,
|
||||||
|
using "half" neighbor lists and setting the
|
||||||
|
Newton flag to "on" may be faster. For many pair styles, setting the neighbor binsize
|
||||||
|
equal to the ghost atom cutoff will give speedup.
|
||||||
|
Use the "-pk kokkos" "command-line switch"_Section_start.html#start_7 to
|
||||||
|
change the default "package kokkos"_package.html
|
||||||
|
options. See its doc page for details and default settings. Experimenting with
|
||||||
|
its options can provide a speed-up for specific calculations. For example:
|
||||||
|
|
||||||
|
mpirun -np 2 lmp_kokkos_cuda_openmpi -k on g 2 -sf kk -pk kokkos binsize 2.8 -in in.lj # Set binsize = neighbor ghost cutoff
|
||||||
|
mpirun -np 2 lmp_kokkos_cuda_openmpi -k on g 2 -sf kk -pk kokkos newton on neigh half binsize 2.8 -in in.lj # Newton on, half neighborlist, set binsize = neighbor ghost cutoff :pre
|
||||||
|
|
||||||
|
NOTE: For good performance of the KOKKOS package on GPUs, you must
|
||||||
|
have Kepler generation GPUs (or later). The Kokkos library exploits
|
||||||
|
texture cache options not supported by Telsa generation GPUs (or
|
||||||
|
older).
|
||||||
|
|
||||||
|
NOTE: When using a GPU, you will achieve the best performance if your
|
||||||
|
input script does not use fix or compute styles which are not yet
|
||||||
|
Kokkos-enabled. This allows data to stay on the GPU for multiple
|
||||||
|
timesteps, without being copied back to the host CPU. Invoking a
|
||||||
|
non-Kokkos fix or compute, or performing I/O for
|
||||||
|
"thermo"_thermo_style.html or "dump"_dump.html output will cause data
|
||||||
|
to be copied back to the CPU incurring a performance penalty.
|
||||||
|
|
||||||
|
NOTE: To get an accurate timing breakdown between time spend in pair,
|
||||||
|
kspace, etc., you must set the environment variable CUDA_LAUNCH_BLOCKING=1.
|
||||||
|
However, this will reduce performance and is not recommended for production runs.
|
||||||
|
|
||||||
|
[Run with the KOKKOS package by editing an input script:]
|
||||||
|
|
||||||
|
Alternatively the effect of the "-sf" or "-pk" switches can be
|
||||||
|
duplicated by adding the "package kokkos"_package.html or "suffix
|
||||||
|
kk"_suffix.html commands to your input script.
|
||||||
|
|
||||||
|
The discussion above for building LAMMPS with the KOKKOS package, the mpirun/mpiexec command, and setting
|
||||||
|
appropriate thread are the same.
|
||||||
|
|
||||||
You must still use the "-k on" "command-line
|
You must still use the "-k on" "command-line
|
||||||
switch"_Section_start.html#start_6 to enable the KOKKOS package, and
|
switch"_Section_start.html#start_7 to enable the KOKKOS package, and
|
||||||
specify its additional arguments for hardware options appropriate to
|
specify its additional arguments for hardware options appropriate to
|
||||||
your system, as documented above.
|
your system, as documented above.
|
||||||
|
|
||||||
Use the "suffix kk"_suffix.html command, or you can explicitly add a
|
You can use the "suffix kk"_suffix.html command, or you can explicitly add a
|
||||||
"kk" suffix to individual styles in your input script, e.g.
|
"kk" suffix to individual styles in your input script, e.g.
|
||||||
|
|
||||||
pair_style lj/cut/kk 2.5 :pre
|
pair_style lj/cut/kk 2.5 :pre
|
||||||
|
|
||||||
You only need to use the "package kokkos"_package.html command if you
|
You only need to use the "package kokkos"_package.html command if you
|
||||||
wish to change any of its option defaults, as set by the "-k on"
|
wish to change any of its option defaults, as set by the "-k on"
|
||||||
"command-line switch"_Section_start.html#start_6.
|
"command-line switch"_Section_start.html#start_7.
|
||||||
|
|
||||||
|
[Using OpenMP threading and CUDA together (experimental):]
|
||||||
|
|
||||||
|
With the KOKKOS package, both OpenMP multi-threading and GPUs can be used
|
||||||
|
together in a few special cases. In the Makefile, the KOKKOS_DEVICES variable must
|
||||||
|
include both "Cuda" and "OpenMP", as is the case for /src/MAKE/OPTIONS/Makefile.kokkos_cuda_mpi
|
||||||
|
|
||||||
|
KOKKOS_DEVICES=Cuda,OpenMP :pre
|
||||||
|
|
||||||
|
The suffix "/kk" is equivalent to "/kk/device", and for Kokkos CUDA,
|
||||||
|
using the "-sf kk" in the command line gives the default CUDA version everywhere.
|
||||||
|
However, if the "/kk/host" suffix is added to a specific style in the input
|
||||||
|
script, the Kokkos OpenMP (CPU) version of that specific style will be used instead.
|
||||||
|
Set the number of OpenMP threads as "t Nt" and the number of GPUs as "g Ng"
|
||||||
|
|
||||||
|
-k on t Nt g Ng :pre
|
||||||
|
|
||||||
|
For example, the command to run with 1 GPU and 8 OpenMP threads is then:
|
||||||
|
|
||||||
|
mpiexec -np 1 lmp_kokkos_cuda_openmpi -in in.lj -k on g 1 t 8 -sf kk :pre
|
||||||
|
|
||||||
|
Conversely, if the "-sf kk/host" is used in the command line and then the
|
||||||
|
"/kk" or "/kk/device" suffix is added to a specific style in your input script,
|
||||||
|
then only that specific style will run on the GPU while everything else will
|
||||||
|
run on the CPU in OpenMP mode. Note that the execution of the CPU and GPU
|
||||||
|
styles will NOT overlap, except for a special case:
|
||||||
|
|
||||||
|
A kspace style and/or molecular topology (bonds, angles, etc.) running on
|
||||||
|
the host CPU can overlap with a pair style running on the GPU. First compile
|
||||||
|
with "--default-stream per-thread" added to CCFLAGS in the Kokkos CUDA Makefile.
|
||||||
|
Then explicitly use the "/kk/host" suffix for kspace and bonds, angles, etc.
|
||||||
|
in the input file and the "kk" suffix (equal to "kk/device") on the command line.
|
||||||
|
Also make sure the environment variable CUDA_LAUNCH_BLOCKING is not set to "1"
|
||||||
|
so CPU/GPU overlap can occur.
|
||||||
|
|
||||||
[Speed-ups to expect:]
|
[Speed-ups to expect:]
|
||||||
|
|
||||||
@ -353,7 +363,7 @@ Generally speaking, the following rules of thumb apply:
|
|||||||
When running on CPUs only, with a single thread per MPI task,
|
When running on CPUs only, with a single thread per MPI task,
|
||||||
performance of a KOKKOS style is somewhere between the standard
|
performance of a KOKKOS style is somewhere between the standard
|
||||||
(un-accelerated) styles (MPI-only mode), and those provided by the
|
(un-accelerated) styles (MPI-only mode), and those provided by the
|
||||||
USER-OMP package. However the difference between all 3 is small (less
|
USER-OMP package. However the difference between all 3 is small (less
|
||||||
than 20%). :ulb,l
|
than 20%). :ulb,l
|
||||||
|
|
||||||
When running on CPUs only, with multiple threads per MPI task,
|
When running on CPUs only, with multiple threads per MPI task,
|
||||||
@ -363,7 +373,7 @@ package. :l
|
|||||||
When running large number of atoms per GPU, KOKKOS is typically faster
|
When running large number of atoms per GPU, KOKKOS is typically faster
|
||||||
than the GPU package. :l
|
than the GPU package. :l
|
||||||
|
|
||||||
When running on Intel Xeon Phi, KOKKOS is not as fast as
|
When running on Intel hardware, KOKKOS is not as fast as
|
||||||
the USER-INTEL package, which is optimized for that hardware. :l
|
the USER-INTEL package, which is optimized for that hardware. :l
|
||||||
:ule
|
:ule
|
||||||
|
|
||||||
@ -371,123 +381,78 @@ See the "Benchmark page"_http://lammps.sandia.gov/bench.html of the
|
|||||||
LAMMPS web site for performance of the KOKKOS package on different
|
LAMMPS web site for performance of the KOKKOS package on different
|
||||||
hardware.
|
hardware.
|
||||||
|
|
||||||
[Guidelines for best performance:]
|
[Advanced Kokkos options:]
|
||||||
|
|
||||||
Here are guidline for using the KOKKOS package on the different
|
There are other allowed options when building with the KOKKOS package.
|
||||||
hardware configurations listed above.
|
As above, they can be set either as variables on the make command line
|
||||||
|
or in Makefile.machine. This is the full list of options, including
|
||||||
|
those discussed above. Each takes a value shown below. The
|
||||||
|
default value is listed, which is set in the
|
||||||
|
/lib/kokkos/Makefile.kokkos file.
|
||||||
|
|
||||||
Many of the guidelines use the "package kokkos"_package.html command
|
KOKKOS_DEVICES, values = {Serial}, {OpenMP}, {Pthreads}, {Cuda}, default = {OpenMP}
|
||||||
See its doc page for details and default settings. Experimenting with
|
KOKKOS_ARCH, values = {KNC}, {SNB}, {HSW}, {Kepler30}, {Kepler32}, {Kepler35}, {Kepler37}, {Maxwell50}, {Maxwell52}, {Maxwell53}, {Pascal60}, {Pascal61}, {ARMv80}, {ARMv81}, {ARMv81}, {ARMv8-ThunderX}, {BGQ}, {Power7}, {Power8}, {Power9}, {KNL}, {BDW}, {SKX}, default = {none}
|
||||||
its options can provide a speed-up for specific calculations.
|
KOKKOS_DEBUG, values = {yes}, {no}, default = {no}
|
||||||
|
KOKKOS_USE_TPLS, values = {hwloc}, {librt}, {experimental_memkind}, default = {none}
|
||||||
|
KOKKOS_CXX_STANDARD, values = {c++11}, {c++1z}, default = {c++11}
|
||||||
|
KOKKOS_OPTIONS, values = {aggressive_vectorization}, {disable_profiling}, default = {none}
|
||||||
|
KOKKOS_CUDA_OPTIONS, values = {force_uvm}, {use_ldg}, {rdc}, {enable_lambda}, default = {enable_lambda} :ul
|
||||||
|
|
||||||
[Running on a multi-core CPU:]
|
KOKKOS_DEVICES sets the parallelization method used for Kokkos code
|
||||||
|
(within LAMMPS). KOKKOS_DEVICES=Serial means that no threading will be used.
|
||||||
|
KOKKOS_DEVICES=OpenMP means that OpenMP threading will be
|
||||||
|
used. KOKKOS_DEVICES=Pthreads means that pthreads will be used.
|
||||||
|
KOKKOS_DEVICES=Cuda means an NVIDIA GPU running CUDA will be used.
|
||||||
|
|
||||||
If N is the number of physical cores/node, then the number of MPI
|
KOKKOS_ARCH enables compiler switches needed when compiling for a
|
||||||
tasks/node * number of threads/task should not exceed N, and should
|
specific hardware:
|
||||||
typically equal N. Note that the default threads/task is 1, as set by
|
|
||||||
the "t" keyword of the "-k" "command-line
|
|
||||||
switch"_Section_start.html#start_6. If you do not change this, no
|
|
||||||
additional parallelism (beyond MPI) will be invoked on the host
|
|
||||||
CPU(s).
|
|
||||||
|
|
||||||
You can compare the performance running in different modes:
|
ARMv80 = ARMv8.0 Compatible CPU
|
||||||
|
ARMv81 = ARMv8.1 Compatible CPU
|
||||||
|
ARMv8-ThunderX = ARMv8 Cavium ThunderX CPU
|
||||||
|
SNB = Intel Sandy/Ivy Bridge CPUs
|
||||||
|
HSW = Intel Haswell CPUs
|
||||||
|
BDW = Intel Broadwell Xeon E-class CPUs
|
||||||
|
SKX = Intel Sky Lake Xeon E-class HPC CPUs (AVX512)
|
||||||
|
KNC = Intel Knights Corner Xeon Phi
|
||||||
|
KNL = Intel Knights Landing Xeon Phi
|
||||||
|
Kepler30 = NVIDIA Kepler generation CC 3.0
|
||||||
|
Kepler32 = NVIDIA Kepler generation CC 3.2
|
||||||
|
Kepler35 = NVIDIA Kepler generation CC 3.5
|
||||||
|
Kepler37 = NVIDIA Kepler generation CC 3.7
|
||||||
|
Maxwell50 = NVIDIA Maxwell generation CC 5.0
|
||||||
|
Maxwell52 = NVIDIA Maxwell generation CC 5.2
|
||||||
|
Maxwell53 = NVIDIA Maxwell generation CC 5.3
|
||||||
|
Pascal60 = NVIDIA Pascal generation CC 6.0
|
||||||
|
Pascal61 = NVIDIA Pascal generation CC 6.1
|
||||||
|
BGQ = IBM Blue Gene/Q CPUs
|
||||||
|
Power8 = IBM POWER8 CPUs
|
||||||
|
Power9 = IBM POWER9 CPUs :ul
|
||||||
|
|
||||||
run with 1 MPI task/node and N threads/task
|
KOKKOS_USE_TPLS=hwloc binds threads to hardware cores, so they do not
|
||||||
run with N MPI tasks/node and 1 thread/task
|
migrate during a simulation. KOKKOS_USE_TPLS=hwloc should always be
|
||||||
run with settings in between these extremes :ul
|
used if running with KOKKOS_DEVICES=Pthreads for pthreads. It is not
|
||||||
|
necessary for KOKKOS_DEVICES=OpenMP for OpenMP, because OpenMP
|
||||||
|
provides alternative methods via environment variables for binding
|
||||||
|
threads to hardware cores. More info on binding threads to cores is
|
||||||
|
given in "Section 5.3"_Section_accelerate.html#acc_3.
|
||||||
|
|
||||||
Examples of mpirun commands in these modes are shown above.
|
KOKKOS_USE_TPLS=librt enables use of a more accurate timer mechanism
|
||||||
|
on most Unix platforms. This library is not available on all
|
||||||
|
platforms.
|
||||||
|
|
||||||
When using KOKKOS to perform multi-threading, it is important for
|
KOKKOS_DEBUG is only useful when developing a Kokkos-enabled style
|
||||||
performance to bind both MPI tasks to physical cores, and threads to
|
within LAMMPS. KOKKOS_DEBUG=yes enables printing of run-time
|
||||||
physical cores, so they do not migrate during a simulation.
|
debugging information that can be useful. It also enables runtime
|
||||||
|
bounds checking on Kokkos data structures.
|
||||||
|
|
||||||
If you are not certain MPI tasks are being bound (check the defaults
|
KOKKOS_CXX_STANDARD and KOKKOS_OPTIONS are typically not changed when building LAMMPS.
|
||||||
for your MPI installation), binding can be forced with these flags:
|
|
||||||
|
|
||||||
OpenMPI 1.8: mpirun -np 2 -bind-to socket -map-by socket ./lmp_openmpi ...
|
KOKKOS_CUDA_OPTIONS are additional options for CUDA. The LAMMPS KOKKOS package must be compiled
|
||||||
Mvapich2 2.0: mpiexec -np 2 -bind-to socket -map-by socket ./lmp_mvapich ... :pre
|
with the {enable_lambda} option when using GPUs.
|
||||||
|
|
||||||
For binding threads with the KOKKOS OMP option, use thread affinity
|
|
||||||
environment variables to force binding. With OpenMP 3.1 (gcc 4.7 or
|
|
||||||
later, intel 12 or later) setting the environment variable
|
|
||||||
OMP_PROC_BIND=true should be sufficient. For binding threads with the
|
|
||||||
KOKKOS pthreads option, compile LAMMPS the KOKKOS HWLOC=yes option
|
|
||||||
(see "this section"_Section_packages.html#KOKKOS of the manual for
|
|
||||||
details).
|
|
||||||
|
|
||||||
[Running on GPUs:]
|
|
||||||
|
|
||||||
Insure the -arch setting in the machine makefile you are using,
|
|
||||||
e.g. src/MAKE/Makefile.cuda, is correct for your GPU hardware/software.
|
|
||||||
(see "this section"_Section_packages.html#KOKKOS of the manual for
|
|
||||||
details).
|
|
||||||
|
|
||||||
The -np setting of the mpirun command should set the number of MPI
|
|
||||||
tasks/node to be equal to the # of physical GPUs on the node.
|
|
||||||
|
|
||||||
Use the "-k" "command-line switch"_Section_commands.html#start_6 to
|
|
||||||
specify the number of GPUs per node, and the number of threads per MPI
|
|
||||||
task. As above for multi-core CPUs (and no GPU), if N is the number
|
|
||||||
of physical cores/node, then the number of MPI tasks/node * number of
|
|
||||||
threads/task should not exceed N. With one GPU (and one MPI task) it
|
|
||||||
may be faster to use less than all the available cores, by setting
|
|
||||||
threads/task to a smaller value. This is because using all the cores
|
|
||||||
on a dual-socket node will incur extra cost to copy memory from the
|
|
||||||
2nd socket to the GPU.
|
|
||||||
|
|
||||||
Examples of mpirun commands that follow these rules are shown above.
|
|
||||||
|
|
||||||
NOTE: When using a GPU, you will achieve the best performance if your
|
|
||||||
input script does not use any fix or compute styles which are not yet
|
|
||||||
Kokkos-enabled. This allows data to stay on the GPU for multiple
|
|
||||||
timesteps, without being copied back to the host CPU. Invoking a
|
|
||||||
non-Kokkos fix or compute, or performing I/O for
|
|
||||||
"thermo"_thermo_style.html or "dump"_dump.html output will cause data
|
|
||||||
to be copied back to the CPU.
|
|
||||||
|
|
||||||
You cannot yet assign multiple MPI tasks to the same GPU with the
|
|
||||||
KOKKOS package. We plan to support this in the future, similar to the
|
|
||||||
GPU package in LAMMPS.
|
|
||||||
|
|
||||||
You cannot yet use both the host (multi-threaded) and device (GPU)
|
|
||||||
together to compute pairwise interactions with the KOKKOS package. We
|
|
||||||
hope to support this in the future, similar to the GPU package in
|
|
||||||
LAMMPS.
|
|
||||||
|
|
||||||
[Running on an Intel Phi:]
|
|
||||||
|
|
||||||
Kokkos only uses Intel Phi processors in their "native" mode, i.e.
|
|
||||||
not hosted by a CPU.
|
|
||||||
|
|
||||||
As illustrated above, build LAMMPS with OMP=yes (the default) and
|
|
||||||
MIC=yes. The latter insures code is correctly compiled for the Intel
|
|
||||||
Phi. The OMP setting means OpenMP will be used for parallelization on
|
|
||||||
the Phi, which is currently the best option within Kokkos. In the
|
|
||||||
future, other options may be added.
|
|
||||||
|
|
||||||
Current-generation Intel Phi chips have either 61 or 57 cores. One
|
|
||||||
core should be excluded for running the OS, leaving 60 or 56 cores.
|
|
||||||
Each core is hyperthreaded, so there are effectively N = 240 (4*60) or
|
|
||||||
N = 224 (4*56) cores to run on.
|
|
||||||
|
|
||||||
The -np setting of the mpirun command sets the number of MPI
|
|
||||||
tasks/node. The "-k on t Nt" command-line switch sets the number of
|
|
||||||
threads/task as Nt. The product of these 2 values should be N, i.e.
|
|
||||||
240 or 224. Also, the number of threads/task should be a multiple of
|
|
||||||
4 so that logical threads from more than one MPI task do not run on
|
|
||||||
the same physical core.
|
|
||||||
|
|
||||||
Examples of mpirun commands that follow these rules are shown above.
|
|
||||||
|
|
||||||
[Restrictions:]
|
[Restrictions:]
|
||||||
|
|
||||||
As noted above, if using GPUs, the number of MPI tasks per compute
|
Currently, there are no precision options with the KOKKOS
|
||||||
node should equal to the number of GPUs per compute node. In the
|
package. All compilation and computation is performed in double
|
||||||
future Kokkos will support assigning multiple MPI tasks to a single
|
precision.
|
||||||
GPU.
|
|
||||||
|
|
||||||
Currently Kokkos does not support AMD GPUs due to limits in the
|
|
||||||
available backend programming models. Specifically, Kokkos requires
|
|
||||||
extensive C++ support from the Kernel language. This is expected to
|
|
||||||
change in the future.
|
|
||||||
|
|||||||
@ -9,6 +9,7 @@
|
|||||||
angle_style class2 command :h3
|
angle_style class2 command :h3
|
||||||
angle_style class2/omp command :h3
|
angle_style class2/omp command :h3
|
||||||
angle_style class2/kk command :h3
|
angle_style class2/kk command :h3
|
||||||
|
angle_style class2/p6 command :h3
|
||||||
|
|
||||||
[Syntax:]
|
[Syntax:]
|
||||||
|
|
||||||
@ -102,11 +103,29 @@ more instructions on how to use the accelerated styles effectively.
|
|||||||
|
|
||||||
:line
|
:line
|
||||||
|
|
||||||
|
The {class2/p6} angle style uses the {class2} potential expanded to sixth order:
|
||||||
|
|
||||||
|
:c,image(Eqs/angle_class2_p6.jpg)
|
||||||
|
|
||||||
|
In this expanded term 6 coefficients for the Ea formula need to be set:
|
||||||
|
|
||||||
|
theta0 (degrees)
|
||||||
|
K2 (energy/radian^2)
|
||||||
|
K3 (energy/radian^3)
|
||||||
|
K4 (energy/radian^4)
|
||||||
|
K5 (energy/radian^5)
|
||||||
|
K6 (energy/radian^6) :ul
|
||||||
|
|
||||||
|
The bond-bond and bond-angle terms remain unchanged.
|
||||||
|
|
||||||
|
:line
|
||||||
|
|
||||||
[Restrictions:]
|
[Restrictions:]
|
||||||
|
|
||||||
This angle style can only be used if LAMMPS was built with the CLASS2
|
This angle style can only be used if LAMMPS was built with the CLASS2
|
||||||
package. See the "Making LAMMPS"_Section_start.html#start_3 section
|
package. For the {class2/p6} style LAMMPS needs to be built with the
|
||||||
for more info on packages.
|
USER-MOFFF package. See the "Making LAMMPS"_Section_start.html#start_3
|
||||||
|
section for more info on packages.
|
||||||
|
|
||||||
[Related commands:]
|
[Related commands:]
|
||||||
|
|
||||||
|
|||||||
65
doc/src/angle_cosine_buck6d.txt
Normal file
@ -0,0 +1,65 @@
|
|||||||
|
"LAMMPS WWW Site"_lws - "LAMMPS Documentation"_ld - "LAMMPS Commands"_lc :c
|
||||||
|
|
||||||
|
:link(lws,http://lammps.sandia.gov)
|
||||||
|
:link(ld,Manual.html)
|
||||||
|
:link(lc,Section_commands.html#comm)
|
||||||
|
|
||||||
|
:line
|
||||||
|
|
||||||
|
angle_style cosine/buck6d command :h3
|
||||||
|
|
||||||
|
[Syntax:]
|
||||||
|
|
||||||
|
angle_style cosine/buck6d :pre
|
||||||
|
|
||||||
|
[Examples:]
|
||||||
|
|
||||||
|
angle_style cosine/buck6d
|
||||||
|
angle_coeff 1 cosine/buck6d 1.978350 4 180.000000 :pre
|
||||||
|
|
||||||
|
[Description:]
|
||||||
|
|
||||||
|
The {cosine/buck6d} angle style uses the potential
|
||||||
|
|
||||||
|
:c,image(Eqs/angle_cosine_buck6d.jpg)
|
||||||
|
|
||||||
|
where K is the energy constant, n is the periodic multiplicity and
|
||||||
|
Theta0 is the equilibrium angle.
|
||||||
|
|
||||||
|
The coefficients must be defined for each angle type via the
|
||||||
|
"angle_coeff"_angle_coeff.html command as in the example above, or in
|
||||||
|
the data file or restart files read by the "read_data"_read_data.html
|
||||||
|
or "read_restart"_read_restart.html commands in the following order:
|
||||||
|
|
||||||
|
K (energy)
|
||||||
|
n
|
||||||
|
Theta0 (degrees) :ul
|
||||||
|
|
||||||
|
Theta0 is specified in degrees, but LAMMPS converts it to radians
|
||||||
|
internally.
|
||||||
|
|
||||||
|
Additional to the cosine term the {cosine/buck6d} angle style computes
|
||||||
|
the short range (vdW) interaction belonging to the
|
||||||
|
"pair_buck6d"_pair_buck6d_coul_gauss.html between the end atoms of
|
||||||
|
the angle. For this reason this angle style only works in combination
|
||||||
|
with the "pair_buck6d"_pair_buck6d_coul_gauss.html styles and needs
|
||||||
|
the "special_bonds"_special_bonds.html 1-3 interactions to be weighted
|
||||||
|
0.0 to prevent double counting.
|
||||||
|
|
||||||
|
:line
|
||||||
|
|
||||||
|
[Restrictions:]
|
||||||
|
|
||||||
|
{cosine/buck6d} can only be used in combination with the
|
||||||
|
"pair_buck6d"_pair_buck6d_coul_gauss.html style and with a
|
||||||
|
"special_bonds"_special_bonds.html 0.0 weighting of 1-3 interactions.
|
||||||
|
|
||||||
|
This angle style can only be used if LAMMPS was built with the
|
||||||
|
USER-MOFFF package. See the "Making
|
||||||
|
LAMMPS"_Section_start.html#start_3 section for more info on packages.
|
||||||
|
|
||||||
|
[Related commands:]
|
||||||
|
|
||||||
|
"angle_coeff"_angle_coeff.html
|
||||||
|
|
||||||
|
[Default:] none
|
||||||
@ -8,6 +8,7 @@ Angle Styles :h1
|
|||||||
angle_charmm
|
angle_charmm
|
||||||
angle_class2
|
angle_class2
|
||||||
angle_cosine
|
angle_cosine
|
||||||
|
angle_cosine_buck6d
|
||||||
angle_cosine_delta
|
angle_cosine_delta
|
||||||
angle_cosine_periodic
|
angle_cosine_periodic
|
||||||
angle_cosine_shift
|
angle_cosine_shift
|
||||||
|
|||||||
@ -16,7 +16,7 @@ atom_modify keyword values ... :pre
|
|||||||
one or more keyword/value pairs may be appended :ulb,l
|
one or more keyword/value pairs may be appended :ulb,l
|
||||||
keyword = {id} or {map} or {first} or {sort} :l
|
keyword = {id} or {map} or {first} or {sort} :l
|
||||||
{id} value = {yes} or {no}
|
{id} value = {yes} or {no}
|
||||||
{map} value = {array} or {hash}
|
{map} value = {yes} or {array} or {hash}
|
||||||
{first} value = group-ID = group whose atoms will appear first in internal atom lists
|
{first} value = group-ID = group whose atoms will appear first in internal atom lists
|
||||||
{sort} values = Nfreq binsize
|
{sort} values = Nfreq binsize
|
||||||
Nfreq = sort atoms spatially every this many time steps
|
Nfreq = sort atoms spatially every this many time steps
|
||||||
@ -25,8 +25,8 @@ keyword = {id} or {map} or {first} or {sort} :l
|
|||||||
|
|
||||||
[Examples:]
|
[Examples:]
|
||||||
|
|
||||||
atom_modify map hash
|
atom_modify map yes
|
||||||
atom_modify map array sort 10000 2.0
|
atom_modify map hash sort 10000 2.0
|
||||||
atom_modify first colloid :pre
|
atom_modify first colloid :pre
|
||||||
|
|
||||||
[Description:]
|
[Description:]
|
||||||
@ -62,29 +62,33 @@ switch. This is described in "Section 2.2"_Section_start.html#start_2
|
|||||||
of the manual. If atom IDs are not used, they must be specified as 0
|
of the manual. If atom IDs are not used, they must be specified as 0
|
||||||
for all atoms, e.g. in a data or restart file.
|
for all atoms, e.g. in a data or restart file.
|
||||||
|
|
||||||
The {map} keyword determines how atom ID lookup is done for molecular
|
The {map} keyword determines how atoms with specific IDs are found
|
||||||
atom styles. Lookups are performed by bond (angle, etc) routines in
|
when required. An example are the bond (angle, etc) methods which
|
||||||
LAMMPS to find the local atom index associated with a global atom ID.
|
need to find the local index of an atom with a specific global ID
|
||||||
|
which is a bond (angle, etc) partner. LAMMPS performs this operation
|
||||||
|
efficiently by creating a "map", which is either an {array} or {hash}
|
||||||
|
table, as descibed below.
|
||||||
|
|
||||||
When the {array} value is used, each processor stores a lookup table
|
When the {map} keyword is not specified in your input script, LAMMPS
|
||||||
of length N, where N is the largest atom ID in the system. This is a
|
only creates a map for "atom_styles"_atom_style.html for molecular
|
||||||
|
systems which have permanent bonds (angles, etc). No map is created
|
||||||
|
for atomic systems, since it is normally not needed. However some
|
||||||
|
LAMMPS commands require a map, even for atomic systems, and will
|
||||||
|
generate an error if one does not exist. The {map} keyword thus
|
||||||
|
allows you to force the creation of a map. The {yes} value will
|
||||||
|
create either an {array} or {hash} style map, as explained in the next
|
||||||
|
paragraph. The {array} and {hash} values create an atom-style or
|
||||||
|
hash-style map respectively.
|
||||||
|
|
||||||
|
For an {array}-style map, each processor stores a lookup table of
|
||||||
|
length N, where N is the largest atom ID in the system. This is a
|
||||||
fast, simple method for many simulations, but requires too much memory
|
fast, simple method for many simulations, but requires too much memory
|
||||||
for large simulations. The {hash} value uses a hash table to perform
|
for large simulations. For a {hash}-style map, a hash table is
|
||||||
the lookups. This can be slightly slower than the {array} method, but
|
created on each processor, which finds an atom ID in constant time
|
||||||
its memory cost is proportional to the number of atoms owned by a
|
(independent of the global number of atom IDs). It can be slightly
|
||||||
processor, i.e. N/P when N is the total number of atoms in the system
|
slower than the {array} map, but its memory cost is proportional to
|
||||||
and P is the number of processors.
|
the number of atoms owned by a processor, i.e. N/P when N is the total
|
||||||
|
number of atoms in the system and P is the number of processors.
|
||||||
When this setting is not specified in your input script, LAMMPS
|
|
||||||
creates a map, if one is needed, as an array or hash. See the
|
|
||||||
discussion of default values below for how LAMMPS chooses which kind
|
|
||||||
of map to build. Note that atomic systems do not normally need to
|
|
||||||
create a map. However, even in this case some LAMMPS commands will
|
|
||||||
create a map to find atoms (and then destroy it), or require a
|
|
||||||
permanent map. An example of the former is the "velocity loop
|
|
||||||
all"_velocity.html command, which uses a map when looping over all
|
|
||||||
atoms and insuring the same velocity values are assigned to an atom
|
|
||||||
ID, no matter which processor owns it.
|
|
||||||
|
|
||||||
The {first} keyword allows a "group"_group.html to be specified whose
|
The {first} keyword allows a "group"_group.html to be specified whose
|
||||||
atoms will be maintained as the first atoms in each processor's list
|
atoms will be maintained as the first atoms in each processor's list
|
||||||
|
|||||||
@ -261,7 +261,7 @@ For images created by the "dump image"_dump_image.html command, if the
|
|||||||
polygon consisting of N line segments. Note that the line segments
|
polygon consisting of N line segments. Note that the line segments
|
||||||
are drawn between the N vertices, which does not correspond exactly to
|
are drawn between the N vertices, which does not correspond exactly to
|
||||||
the physical extent of the body (because the "pair_style
|
the physical extent of the body (because the "pair_style
|
||||||
rounded/polygon"_pair_body_rounded_polygon.cpp defines finite-size
|
rounded/polygon"_pair_body_rounded_polygon.html defines finite-size
|
||||||
spheres at those point and the line segments between the spheres are
|
spheres at those point and the line segments between the spheres are
|
||||||
tangent to the spheres). The drawn diameter of each line segment is
|
tangent to the spheres). The drawn diameter of each line segment is
|
||||||
determined by the {bflag1} parameter for the {body} keyword. The
|
determined by the {bflag1} parameter for the {body} keyword. The
|
||||||
|
|||||||
73
doc/src/bond_gromos.txt
Normal file
@ -0,0 +1,73 @@
|
|||||||
|
"LAMMPS WWW Site"_lws - "LAMMPS Documentation"_ld - "LAMMPS Commands"_lc :c
|
||||||
|
|
||||||
|
:link(lws,http://lammps.sandia.gov)
|
||||||
|
:link(ld,Manual.html)
|
||||||
|
:link(lc,Section_commands.html#comm)
|
||||||
|
|
||||||
|
:line
|
||||||
|
|
||||||
|
bond_style gromos command :h3
|
||||||
|
bond_style gromos/omp command :h3
|
||||||
|
|
||||||
|
[Syntax:]
|
||||||
|
|
||||||
|
bond_style gromos :pre
|
||||||
|
|
||||||
|
[Examples:]
|
||||||
|
|
||||||
|
bond_style gromos
|
||||||
|
bond_coeff 5 80.0 1.2 :pre
|
||||||
|
|
||||||
|
[Description:]
|
||||||
|
|
||||||
|
The {gromos} bond style uses the potential
|
||||||
|
|
||||||
|
:c,image(Eqs/bond_gromos.jpg)
|
||||||
|
|
||||||
|
where r0 is the equilibrium bond distance. Note that the usual 1/4
|
||||||
|
factor is included in K.
|
||||||
|
|
||||||
|
The following coefficients must be defined for each bond type via the
|
||||||
|
"bond_coeff"_bond_coeff.html command as in the example above, or in
|
||||||
|
the data file or restart files read by the "read_data"_read_data.html
|
||||||
|
or "read_restart"_read_restart.html commands:
|
||||||
|
|
||||||
|
K (energy/distance^4)
|
||||||
|
r0 (distance) :ul
|
||||||
|
|
||||||
|
:line
|
||||||
|
|
||||||
|
Styles with a {gpu}, {intel}, {kk}, {omp}, or {opt} suffix are
|
||||||
|
functionally the same as the corresponding style without the suffix.
|
||||||
|
They have been optimized to run faster, depending on your available
|
||||||
|
hardware, as discussed in "Section 5"_Section_accelerate.html
|
||||||
|
of the manual. The accelerated styles take the same arguments and
|
||||||
|
should produce the same results, except for round-off and precision
|
||||||
|
issues.
|
||||||
|
|
||||||
|
These accelerated styles are part of the GPU, USER-INTEL, KOKKOS,
|
||||||
|
USER-OMP and OPT packages, respectively. They are only enabled if
|
||||||
|
LAMMPS was built with those packages. See the "Making
|
||||||
|
LAMMPS"_Section_start.html#start_3 section for more info.
|
||||||
|
|
||||||
|
You can specify the accelerated styles explicitly in your input script
|
||||||
|
by including their suffix, or you can use the "-suffix command-line
|
||||||
|
switch"_Section_start.html#start_6 when you invoke LAMMPS, or you can
|
||||||
|
use the "suffix"_suffix.html command in your input script.
|
||||||
|
|
||||||
|
See "Section 5"_Section_accelerate.html of the manual for
|
||||||
|
more instructions on how to use the accelerated styles effectively.
|
||||||
|
|
||||||
|
:line
|
||||||
|
|
||||||
|
[Restrictions:]
|
||||||
|
|
||||||
|
This bond style can only be used if LAMMPS was built with the
|
||||||
|
MOLECULE package. See the "Making
|
||||||
|
LAMMPS"_Section_start.html#start_3 section for more info on packages.
|
||||||
|
|
||||||
|
[Related commands:]
|
||||||
|
|
||||||
|
"bond_coeff"_bond_coeff.html, "delete_bonds"_delete_bonds.html
|
||||||
|
|
||||||
|
[Default:] none
|
||||||
@ -8,6 +8,7 @@ Bond Styles :h1
|
|||||||
bond_class2
|
bond_class2
|
||||||
bond_fene
|
bond_fene
|
||||||
bond_fene_expand
|
bond_fene_expand
|
||||||
|
bond_gromos
|
||||||
bond_harmonic
|
bond_harmonic
|
||||||
bond_harmonic_shift
|
bond_harmonic_shift
|
||||||
bond_harmonic_shift_cut
|
bond_harmonic_shift_cut
|
||||||
|
|||||||
@ -32,6 +32,7 @@ Commands :h1
|
|||||||
dimension
|
dimension
|
||||||
displace_atoms
|
displace_atoms
|
||||||
dump
|
dump
|
||||||
|
dump_cfg_uef
|
||||||
dump_h5md
|
dump_h5md
|
||||||
dump_image
|
dump_image
|
||||||
dump_modify
|
dump_modify
|
||||||
@ -92,6 +93,7 @@ Commands :h1
|
|||||||
tad
|
tad
|
||||||
temper
|
temper
|
||||||
temper_grem
|
temper_grem
|
||||||
|
temper_npt
|
||||||
thermo
|
thermo
|
||||||
thermo_modify
|
thermo_modify
|
||||||
thermo_style
|
thermo_style
|
||||||
|
|||||||
@ -169,6 +169,7 @@ by users which are included in the LAMMPS distribution. The list of
|
|||||||
these with links to the individual styles are given in the compute
|
these with links to the individual styles are given in the compute
|
||||||
section of "this page"_Section_commands.html#cmd_5.
|
section of "this page"_Section_commands.html#cmd_5.
|
||||||
|
|
||||||
|
"aggregate/atom"_compute_cluster_atom.html - aggregate ID for each atom
|
||||||
"angle/local"_compute_bond_local.html - theta and energy of each angle
|
"angle/local"_compute_bond_local.html - theta and energy of each angle
|
||||||
"angmom/chunk"_compute_angmom_chunk.html - angular momentum for each chunk
|
"angmom/chunk"_compute_angmom_chunk.html - angular momentum for each chunk
|
||||||
"body/local"_compute_body_local.html - attributes of body sub-particles
|
"body/local"_compute_body_local.html - attributes of body sub-particles
|
||||||
@ -191,6 +192,7 @@ section of "this page"_Section_commands.html#cmd_5.
|
|||||||
"erotate/sphere"_compute_erotate_sphere.html - rotational energy of spherical particles
|
"erotate/sphere"_compute_erotate_sphere.html - rotational energy of spherical particles
|
||||||
"erotate/sphere/atom"_compute_erotate_sphere.html - rotational energy for each spherical particle
|
"erotate/sphere/atom"_compute_erotate_sphere.html - rotational energy for each spherical particle
|
||||||
"event/displace"_compute_event_displace.html - detect event on atom displacement
|
"event/displace"_compute_event_displace.html - detect event on atom displacement
|
||||||
|
"fragment/atom"_compute_cluster_atom.html - fragment ID for each atom
|
||||||
"group/group"_compute_group_group.html - energy/force between two groups of atoms
|
"group/group"_compute_group_group.html - energy/force between two groups of atoms
|
||||||
"gyration"_compute_gyration.html - radius of gyration of group of atoms
|
"gyration"_compute_gyration.html - radius of gyration of group of atoms
|
||||||
"gyration/chunk"_compute_gyration_chunk.html - radius of gyration for each chunk
|
"gyration/chunk"_compute_gyration_chunk.html - radius of gyration for each chunk
|
||||||
|
|||||||
@ -28,7 +28,7 @@ compute 1 all aggregate/atom 3.5 :pre
|
|||||||
|
|
||||||
[Description:]
|
[Description:]
|
||||||
|
|
||||||
Define a computation that assigns each atom a cluster, fragement,
|
Define a computation that assigns each atom a cluster, fragment,
|
||||||
or aggregate ID.
|
or aggregate ID.
|
||||||
|
|
||||||
A cluster is defined as a set of atoms, each of which is within the
|
A cluster is defined as a set of atoms, each of which is within the
|
||||||
@ -53,7 +53,7 @@ like micelles.
|
|||||||
Only atoms in the compute group are clustered and assigned cluster
|
Only atoms in the compute group are clustered and assigned cluster
|
||||||
IDs. Atoms not in the compute group are assigned a cluster ID = 0.
|
IDs. Atoms not in the compute group are assigned a cluster ID = 0.
|
||||||
For fragments, only bonds where [both] atoms of the bond are included
|
For fragments, only bonds where [both] atoms of the bond are included
|
||||||
in the compute group are assigned to fragments, so that only fragmets
|
in the compute group are assigned to fragments, so that only fragments
|
||||||
are detected where [all] atoms are in the compute group. Thus atoms
|
are detected where [all] atoms are in the compute group. Thus atoms
|
||||||
may be included in the compute group, yes still have a fragment ID of 0.
|
may be included in the compute group, yes still have a fragment ID of 0.
|
||||||
|
|
||||||
|
|||||||
@ -27,8 +27,8 @@ compute 1 all dihedral/local phi :pre
|
|||||||
|
|
||||||
Define a computation that calculates properties of individual dihedral
|
Define a computation that calculates properties of individual dihedral
|
||||||
interactions. The number of datums generated, aggregated across all
|
interactions. The number of datums generated, aggregated across all
|
||||||
processors, equals the number of angles in the system, modified by the
|
processors, equals the number of dihedral angles in the system, modified
|
||||||
group parameter as explained below.
|
by the group parameter as explained below.
|
||||||
|
|
||||||
The value {phi} is the dihedral angle, as defined in the diagram on
|
The value {phi} is the dihedral angle, as defined in the diagram on
|
||||||
the "dihedral_style"_dihedral_style.html doc page.
|
the "dihedral_style"_dihedral_style.html doc page.
|
||||||
|
|||||||
@ -67,7 +67,7 @@ parameters. This is followed by that number of integers giving the
|
|||||||
degree of each order parameter. Because {Q}2 and all odd-degree order
|
degree of each order parameter. Because {Q}2 and all odd-degree order
|
||||||
parameters are zero for atoms in cubic crystals (see
|
parameters are zero for atoms in cubic crystals (see
|
||||||
"Steinhardt"_#Steinhardt), the default order parameters are {Q}4,
|
"Steinhardt"_#Steinhardt), the default order parameters are {Q}4,
|
||||||
{Q}6, {Q}8, {Q}10, and {Q}12. For the FCC crystal with {nnn}=12, {Q}4
|
{Q}6, {Q}8, {Q}10, and {Q}12. For the FCC crystal with {nnn} =12, {Q}4
|
||||||
= sqrt(7/3)/8 = 0.19094.... The numerical values of all order
|
= sqrt(7/3)/8 = 0.19094.... The numerical values of all order
|
||||||
parameters up to {Q}12 for a range of commonly encountered
|
parameters up to {Q}12 for a range of commonly encountered
|
||||||
high-symmetry structures are given in Table I of "Mickel et
|
high-symmetry structures are given in Table I of "Mickel et
|
||||||
|
|||||||
61
doc/src/compute_pressure_uef.txt
Normal file
@ -0,0 +1,61 @@
|
|||||||
|
"LAMMPS WWW Site"_lws - "LAMMPS Documentation"_ld - "LAMMPS Commands"_lc :c
|
||||||
|
|
||||||
|
:link(lws,http://lammps.sandia.gov)
|
||||||
|
:link(ld,Manual.html)
|
||||||
|
:link(lc,Section_commands.html#comm)
|
||||||
|
|
||||||
|
:line
|
||||||
|
|
||||||
|
compute pressure/uef command :h3
|
||||||
|
|
||||||
|
[Syntax:]
|
||||||
|
|
||||||
|
compute ID group-ID pressure/uef temp-ID keyword ... :pre
|
||||||
|
|
||||||
|
ID, group-ID are documented in "compute"_compute.html command
|
||||||
|
pressure/uef = style name of this compute command
|
||||||
|
temp-ID = ID of compute that calculates temperature, can be NULL if not needed
|
||||||
|
zero or more keywords may be appended
|
||||||
|
keyword = {ke} or {pair} or {bond} or {angle} or {dihedral} or {improper} or {kspace} or {fix} or {virial} :ul
|
||||||
|
|
||||||
|
[Examples:]
|
||||||
|
|
||||||
|
compute 1 all pressure/uef my_temp_uef
|
||||||
|
compute 2 all pressure/uef my_temp_uef virial :pre
|
||||||
|
|
||||||
|
[Description:]
|
||||||
|
|
||||||
|
This command is used to compute the pressure tensor in
|
||||||
|
the reference frame of the applied flow field when
|
||||||
|
"fix nvt/uef"_fix_nh_uef.html" or
|
||||||
|
"fix npt/uef"_fix_nh_uef.html" is used.
|
||||||
|
It is not necessary to use this command to compute the scalar
|
||||||
|
value of the pressure. A "compute pressure"_compute_pressure.html
|
||||||
|
may be used for that purpose.
|
||||||
|
|
||||||
|
The keywords and output information are documented in
|
||||||
|
"compute_pressure"_compute_pressure.html.
|
||||||
|
|
||||||
|
[Restrictions:]
|
||||||
|
|
||||||
|
This fix is part of the USER-UEF package. It is only enabled if
|
||||||
|
LAMMPS was built with that package. See the
|
||||||
|
"Making LAMMPS"_Section_start.html#start_3 section for more info.
|
||||||
|
|
||||||
|
This command can only be used when "fix nvt/uef"_fix_nh_uef.html
|
||||||
|
or "fix npt/uef"_fix_nh_uef.html is active.
|
||||||
|
|
||||||
|
The kinetic contribution to the pressure tensor
|
||||||
|
will be accurate only when
|
||||||
|
the compute specified by {temp-ID} is a
|
||||||
|
"compute temp/uef"_compute_temp_uef.html.
|
||||||
|
|
||||||
|
[Related commands:]
|
||||||
|
|
||||||
|
"compute pressure"_compute_pressure.html,
|
||||||
|
"fix nvt/uef"_fix_nh_uef.html,
|
||||||
|
"compute temp/uef"_compute_temp_uef.html
|
||||||
|
|
||||||
|
[Default:] none
|
||||||
|
|
||||||
|
|
||||||
@ -224,7 +224,7 @@ block contains six sub-blocks corresponding to the {xx}, {yy}, {zz},
|
|||||||
notation. Each of these sub-blocks contains one column for each
|
notation. Each of these sub-blocks contains one column for each
|
||||||
bispectrum component, the same as for compute {sna/atom}
|
bispectrum component, the same as for compute {sna/atom}
|
||||||
|
|
||||||
For example, if {K}=30 and ntypes=1, the number of columns in the per-atom
|
For example, if {K} =30 and ntypes=1, the number of columns in the per-atom
|
||||||
arrays generated by {sna/atom}, {snad/atom}, and {snav/atom}
|
arrays generated by {sna/atom}, {snad/atom}, and {snav/atom}
|
||||||
are 30, 90, and 180, respectively. With {quadratic} value=1,
|
are 30, 90, and 180, respectively. With {quadratic} value=1,
|
||||||
the numbers of columns are 930, 2790, and 5580, respectively.
|
the numbers of columns are 930, 2790, and 5580, respectively.
|
||||||
|
|||||||
52
doc/src/compute_temp_uef.txt
Normal file
@ -0,0 +1,52 @@
|
|||||||
|
"LAMMPS WWW Site"_lws - "LAMMPS Documentation"_ld - "LAMMPS Commands"_lc :c
|
||||||
|
|
||||||
|
:link(lws,http://lammps.sandia.gov)
|
||||||
|
:link(ld,Manual.html)
|
||||||
|
:link(lc,Section_commands.html#comm)
|
||||||
|
|
||||||
|
:line
|
||||||
|
|
||||||
|
compute temp/uef command :h3
|
||||||
|
|
||||||
|
[Syntax:]
|
||||||
|
|
||||||
|
compute ID group-ID temp/uef :pre
|
||||||
|
|
||||||
|
ID, group-ID are documented in "compute"_compute.html command
|
||||||
|
temp/uef = style name of this compute command :ul
|
||||||
|
|
||||||
|
[Examples:]
|
||||||
|
|
||||||
|
compute 1 all temp/uef
|
||||||
|
compute 2 sel temp/uef :pre
|
||||||
|
|
||||||
|
[Description:]
|
||||||
|
|
||||||
|
This command is used to compute the kinetic energy tensor in
|
||||||
|
the reference frame of the applied flow field when
|
||||||
|
"fix nvt/uef"_fix_nh_uef.html" or
|
||||||
|
"fix npt/uef"_fix_nh_uef.html" is used.
|
||||||
|
It is not necessary to use this command to compute the scalar
|
||||||
|
value of the temperature. A "compute temp"_compute_temp.html
|
||||||
|
may be used for that purpose.
|
||||||
|
|
||||||
|
Output information for this command can be found in the
|
||||||
|
documentation for "compute temp"_compute_temp.html.
|
||||||
|
|
||||||
|
[Restrictions:]
|
||||||
|
|
||||||
|
This fix is part of the USER-UEF package. It is only enabled if
|
||||||
|
LAMMPS was built with that package. See the
|
||||||
|
"Making LAMMPS"_Section_start.html#start_3 section for more info.
|
||||||
|
|
||||||
|
This command can only be used when "fix nvt/uef"_fix_nh_uef.html
|
||||||
|
or "fix npt/uef"_fix_nh_uef.html is active.
|
||||||
|
|
||||||
|
[Related commands:]
|
||||||
|
|
||||||
|
"compute temp"_compute_temp.html,
|
||||||
|
"fix nvt/uef"_fix_nh_uef.html,
|
||||||
|
"compute pressure/uef"_compute_pressure_uef.html
|
||||||
|
|
||||||
|
|
||||||
|
[Default:] none
|
||||||
@ -65,6 +65,7 @@ Computes :h1
|
|||||||
compute_pe_atom
|
compute_pe_atom
|
||||||
compute_plasticity_atom
|
compute_plasticity_atom
|
||||||
compute_pressure
|
compute_pressure
|
||||||
|
compute_pressure_uef
|
||||||
compute_property_atom
|
compute_property_atom
|
||||||
compute_property_chunk
|
compute_property_chunk
|
||||||
compute_property_local
|
compute_property_local
|
||||||
@ -114,6 +115,7 @@ Computes :h1
|
|||||||
compute_temp_region_eff
|
compute_temp_region_eff
|
||||||
compute_temp_rotate
|
compute_temp_rotate
|
||||||
compute_temp_sphere
|
compute_temp_sphere
|
||||||
|
compute_temp_uef
|
||||||
compute_ti
|
compute_ti
|
||||||
compute_torque_chunk
|
compute_torque_chunk
|
||||||
compute_vacf
|
compute_vacf
|
||||||
|
|||||||
@ -36,9 +36,9 @@ keyword = {mol} or {basis} or {remap} or {var} or {set} or {units} :l
|
|||||||
{set} values = dim name
|
{set} values = dim name
|
||||||
dim = {x} or {y} or {z}
|
dim = {x} or {y} or {z}
|
||||||
name = name of variable to set with x, y, or z atom position
|
name = name of variable to set with x, y, or z atom position
|
||||||
{rotate} values = Rx Ry Rz theta
|
{rotate} values = theta Rx Ry Rz
|
||||||
Rx,Ry,Rz = rotation vector for single molecule
|
|
||||||
theta = rotation angle for single molecule (degrees)
|
theta = rotation angle for single molecule (degrees)
|
||||||
|
Rx,Ry,Rz = rotation vector for single molecule
|
||||||
{units} value = {lattice} or {box}
|
{units} value = {lattice} or {box}
|
||||||
{lattice} = the geometry is defined in lattice units
|
{lattice} = the geometry is defined in lattice units
|
||||||
{box} = the geometry is defined in simulation box units :pre
|
{box} = the geometry is defined in simulation box units :pre
|
||||||
@ -227,28 +227,30 @@ the sinusoid would appear to be "smoother". Also note the use of the
|
|||||||
converts lattice spacings to distance. Click on the image for a
|
converts lattice spacings to distance. Click on the image for a
|
||||||
larger version.
|
larger version.
|
||||||
|
|
||||||
|
dimension 2
|
||||||
variable x equal 100
|
variable x equal 100
|
||||||
variable y equal 25
|
variable y equal 25
|
||||||
lattice hex 0.8442
|
lattice hex 0.8442
|
||||||
region box block 0 $x 0 $y -0.5 0.5
|
region box block 0 $x 0 $y -0.5 0.5
|
||||||
create_box 1 box :pre
|
create_box 1 box :pre
|
||||||
|
|
||||||
variable xx equal 0.0
|
variable xx internal 0.0
|
||||||
variable yy equal 0.0
|
variable yy internal 0.0
|
||||||
variable v equal "(0.2*v_y*ylat * cos(v_xx/xlat * 2.0*PI*4.0/v_x) + 0.5*v_y*ylat - v_yy) > 0.0"
|
variable v equal "(0.2*v_y*ylat * cos(v_xx/xlat * 2.0*PI*4.0/v_x) + 0.5*v_y*ylat - v_yy) > 0.0"
|
||||||
create_atoms 1 box var v set x xx set y yy :pre
|
create_atoms 1 box var v set x xx set y yy
|
||||||
|
write_dump all atom sinusoid.lammpstrj :pre
|
||||||
|
|
||||||
:c,image(JPG/sinusoid_small.jpg,JPG/sinusoid.jpg)
|
:c,image(JPG/sinusoid_small.jpg,JPG/sinusoid.jpg)
|
||||||
|
|
||||||
The {rotate} keyword can be used with the {single} style, when adding
|
The {rotate} keyword can only be used with the {single} style and
|
||||||
a single molecule to specify the orientation at which the molecule is
|
when adding a single molecule. It allows to specify the orientation
|
||||||
inserted. The axis of rotation is determined by the rotation vector
|
at which the molecule is inserted. The axis of rotation is
|
||||||
(Rx,Ry,Rz) that goes through the insertion point. The specified
|
determined by the rotation vector (Rx,Ry,Rz) that goes through the
|
||||||
{theta} determines the angle of rotation around that axis. Note that
|
insertion point. The specified {theta} determines the angle of
|
||||||
the direction of rotation for the atoms around the rotation axis is
|
rotation around that axis. Note that the direction of rotation for
|
||||||
consistent with the right-hand rule: if your right-hand's thumb points
|
the atoms around the rotation axis is consistent with the right-hand
|
||||||
along {R}, then your fingers wrap around the axis in the direction of
|
rule: if your right-hand's thumb points along {R}, then your fingers
|
||||||
rotation.
|
wrap around the axis in the direction of rotation.
|
||||||
|
|
||||||
The {units} keyword determines the meaning of the distance units used
|
The {units} keyword determines the meaning of the distance units used
|
||||||
to specify the coordinates of the one particle created by the {single}
|
to specify the coordinates of the one particle created by the {single}
|
||||||
|
|||||||
@ -18,7 +18,7 @@ style = {many} or {single/bond} or {single/angle} or {single/dihedral} :ule,l
|
|||||||
group2-ID = ID of second group, bonds will be between atoms in the 2 groups
|
group2-ID = ID of second group, bonds will be between atoms in the 2 groups
|
||||||
btype = bond type of created bonds
|
btype = bond type of created bonds
|
||||||
rmin = minimum distance between pair of atoms to bond together
|
rmin = minimum distance between pair of atoms to bond together
|
||||||
rmax = minimum distance between pair of atoms to bond together
|
rmax = maximum distance between pair of atoms to bond together
|
||||||
{single/bond} args = btype batom1 batom2
|
{single/bond} args = btype batom1 batom2
|
||||||
btype = bond type of new bond
|
btype = bond type of new bond
|
||||||
batom1,batom2 = atom IDs for two atoms in bond
|
batom1,batom2 = atom IDs for two atoms in bond
|
||||||
|
|||||||
@ -7,6 +7,7 @@
|
|||||||
:line
|
:line
|
||||||
|
|
||||||
dihedral_style fourier command :h3
|
dihedral_style fourier command :h3
|
||||||
|
dihedral_style fourier/intel command :h3
|
||||||
dihedral_style fourier/omp command :h3
|
dihedral_style fourier/omp command :h3
|
||||||
|
|
||||||
[Syntax:]
|
[Syntax:]
|
||||||
|
|||||||
@ -45,7 +45,7 @@ args = list of arguments for a particular style :l
|
|||||||
{xyz/gz} args = none
|
{xyz/gz} args = none
|
||||||
{xyz/mpiio} args = none :pre
|
{xyz/mpiio} args = none :pre
|
||||||
|
|
||||||
{custom} or {custom/gz} or {custom/mpiio} args = list of atom attributes :l
|
{custom} or {custom/gz} or {custom/mpiio} or {netcdf} or {netcdf/mpiio} args = list of atom attributes :l
|
||||||
possible attributes = id, mol, proc, procp1, type, element, mass,
|
possible attributes = id, mol, proc, procp1, type, element, mass,
|
||||||
x, y, z, xs, ys, zs, xu, yu, zu,
|
x, y, z, xs, ys, zs, xu, yu, zu,
|
||||||
xsu, ysu, zsu, ix, iy, iz,
|
xsu, ysu, zsu, ix, iy, iz,
|
||||||
@ -649,20 +649,7 @@ LAMMPS"_Section_start.html#start_3 section for more info.
|
|||||||
|
|
||||||
The {xtc} style is part of the MISC package. It is only enabled if
|
The {xtc} style is part of the MISC package. It is only enabled if
|
||||||
LAMMPS was built with that package. See the "Making
|
LAMMPS was built with that package. See the "Making
|
||||||
LAMMPS"_Section_start.html#start_3 section for more info. This is
|
LAMMPS"_Section_start.html#start_3 section for more info.
|
||||||
because some machines may not support the low-level XDR data format
|
|
||||||
that XTC files are written with, which will result in a compile-time
|
|
||||||
error when a low-level include file is not found. Putting this style
|
|
||||||
in a package makes it easy to exclude from a LAMMPS build for those
|
|
||||||
machines. However, the MISC package also includes two compatibility
|
|
||||||
header files and associated functions, which should be a suitable
|
|
||||||
substitute on machines that do not have the appropriate native header
|
|
||||||
files. This option can be invoked at build time by adding
|
|
||||||
-DLAMMPS_XDR to the CCFLAGS variable in the appropriate low-level
|
|
||||||
Makefile, e.g. src/MAKE/Makefile.foo. This compatibility mode has
|
|
||||||
been tested successfully on Cray XT3/XT4/XT5 and IBM BlueGene/L
|
|
||||||
machines and should also work on IBM BG/P, and Windows XP/Vista/7
|
|
||||||
machines.
|
|
||||||
|
|
||||||
[Related commands:]
|
[Related commands:]
|
||||||
|
|
||||||
|
|||||||
53
doc/src/dump_cfg_uef.txt
Normal file
@ -0,0 +1,53 @@
|
|||||||
|
"LAMMPS WWW Site"_lws - "LAMMPS Documentation"_ld - "LAMMPS Commands"_lc :c
|
||||||
|
|
||||||
|
:link(lws,http://lammps.sandia.gov)
|
||||||
|
:link(ld,Manual.html)
|
||||||
|
:link(lc,Section_commands.html#comm)
|
||||||
|
|
||||||
|
:line
|
||||||
|
|
||||||
|
dump cfg/uef command :h3
|
||||||
|
|
||||||
|
[Syntax:]
|
||||||
|
|
||||||
|
dump ID group-ID cfg/uef N file mass type xs ys zs args :pre
|
||||||
|
|
||||||
|
ID = user-assigned name for the dump :ulb,l
|
||||||
|
group-ID = ID of the group of atoms to be dumped :l
|
||||||
|
N = dump every this many timesteps :l
|
||||||
|
file = name of file to write dump info to :l
|
||||||
|
args = same as args for "dump custom"_dump.html :pre
|
||||||
|
|
||||||
|
:ule
|
||||||
|
|
||||||
|
[Examples:]
|
||||||
|
|
||||||
|
dump 1 all cfg/uef 10 dump.*.cfg mass type xs ys zs
|
||||||
|
dump 2 all cfg/uef 100 dump.*.cfg mass type xs ys zs id c_stress :pre
|
||||||
|
|
||||||
|
[Description:]
|
||||||
|
|
||||||
|
This command is used to dump atomic coordinates in the
|
||||||
|
reference frame of the applied flow field when
|
||||||
|
"fix nvt/uef"_fix_nh_uef.html or
|
||||||
|
"fix npt/uef"_fix_nh_uef.html or is used. Only the atomic
|
||||||
|
coordinates and frame-invariant scalar quantities
|
||||||
|
will be in the flow frame. If velocities are selected
|
||||||
|
as output, for example, they will not be in the same
|
||||||
|
reference frame as the atomic positions.
|
||||||
|
|
||||||
|
[Restrictions:]
|
||||||
|
|
||||||
|
This fix is part of the USER-UEF package. It is only enabled if
|
||||||
|
LAMMPS was built with that package. See the
|
||||||
|
"Making LAMMPS"_Section_start.html#start_3 section for more info.
|
||||||
|
|
||||||
|
This command can only be used when "fix nvt/uef"_fix_nh_uef.html
|
||||||
|
or "fix npt/uef"_fix_nh_uef.html is active.
|
||||||
|
|
||||||
|
[Related commands:]
|
||||||
|
|
||||||
|
"dump"_dump.html,
|
||||||
|
"fix nvt/uef"_fix_nh_uef.html
|
||||||
|
|
||||||
|
[Default:] none
|
||||||
@ -15,8 +15,9 @@ dump_modify dump-ID keyword values ... :pre
|
|||||||
dump-ID = ID of dump to modify :ulb,l
|
dump-ID = ID of dump to modify :ulb,l
|
||||||
one or more keyword/value pairs may be appended :l
|
one or more keyword/value pairs may be appended :l
|
||||||
these keywords apply to various dump styles :l
|
these keywords apply to various dump styles :l
|
||||||
keyword = {append} or {buffer} or {element} or {every} or {fileper} or {first} or {flush} or {format} or {image} or {label} or {nfile} or {pad} or {precision} or {region} or {scale} or {sort} or {thresh} or {unwrap} :l
|
keyword = {append} or {at} or {buffer} or {element} or {every} or {fileper} or {first} or {flush} or {format} or {image} or {label} or {nfile} or {pad} or {precision} or {region} or {scale} or {sort} or {thresh} or {unwrap} :l
|
||||||
{append} arg = {yes} or {no} or {at} N
|
{append} arg = {yes} or {no}
|
||||||
|
{at} arg = N
|
||||||
N = index of frame written upon first dump
|
N = index of frame written upon first dump
|
||||||
{buffer} arg = {yes} or {no}
|
{buffer} arg = {yes} or {no}
|
||||||
{element} args = E1 E2 ... EN, where N = # of atom types
|
{element} args = E1 E2 ... EN, where N = # of atom types
|
||||||
@ -141,13 +142,18 @@ and {dcd}. It also applies only to text output files, not to binary
|
|||||||
or gzipped or image/movie files. If specified as {yes}, then dump
|
or gzipped or image/movie files. If specified as {yes}, then dump
|
||||||
snapshots are appended to the end of an existing dump file. If
|
snapshots are appended to the end of an existing dump file. If
|
||||||
specified as {no}, then a new dump file will be created which will
|
specified as {no}, then a new dump file will be created which will
|
||||||
overwrite an existing file with the same name. If the {at} option is present
|
overwrite an existing file with the same name.
|
||||||
({netcdf} only), then the frame to append to can be specified. Negative values
|
|
||||||
are counted from the end of the file. This keyword can only take effect if the
|
:line
|
||||||
dump_modify command is used after the "dump"_dump.html command, but before the
|
|
||||||
first command that causes dump snapshots to be output, e.g. a "run"_run.html or
|
The {at} keyword only applies to the {netcdf} dump style. It can only
|
||||||
"minimize"_minimize.html command. Once the dump file has been opened, this
|
be used if the {append yes} keyword is also used. The {N} argument is
|
||||||
keyword has no further effect.
|
the index of which frame to append to. A negative value can be
|
||||||
|
specified for {N}, which means a frame counted from the end of the
|
||||||
|
file. The {at} keyword can only be used if the dump_modify command is
|
||||||
|
before the first command that causes dump snapshots to be output,
|
||||||
|
e.g. a "run"_run.html or "minimize"_minimize.html command. Once the
|
||||||
|
dump file has been opened, this keyword has no further effect.
|
||||||
|
|
||||||
:line
|
:line
|
||||||
|
|
||||||
|
|||||||
@ -25,7 +25,8 @@ args = list of atom attributes, same as for "dump_style custom"_dump.html :l,ule
|
|||||||
|
|
||||||
dump 1 all netcdf 100 traj.nc type x y z vx vy vz
|
dump 1 all netcdf 100 traj.nc type x y z vx vy vz
|
||||||
dump_modify 1 append yes at -1 thermo yes
|
dump_modify 1 append yes at -1 thermo yes
|
||||||
dump 1 all netcdf/mpiio 1000 traj.nc id type x y z :pre
|
dump 1 all netcdf/mpiio 1000 traj.nc id type x y z
|
||||||
|
dump 1 all netcdf 1000 traj.*.nc id type x y z :pre
|
||||||
|
|
||||||
[Description:]
|
[Description:]
|
||||||
|
|
||||||
@ -73,4 +74,3 @@ section for more info.
|
|||||||
[Related commands:]
|
[Related commands:]
|
||||||
|
|
||||||
"dump"_dump.html, "dump_modify"_dump_modify.html, "undump"_undump.html
|
"dump"_dump.html, "dump_modify"_dump_modify.html, "undump"_undump.html
|
||||||
|
|
||||||
|
|||||||
@ -193,6 +193,7 @@ of "this page"_Section_commands.html#cmd_5.
|
|||||||
"halt"_fix_halt.html - terminate a dynamics run or minimization
|
"halt"_fix_halt.html - terminate a dynamics run or minimization
|
||||||
"heat"_fix_heat.html - add/subtract momentum-conserving heat
|
"heat"_fix_heat.html - add/subtract momentum-conserving heat
|
||||||
"indent"_fix_indent.html - impose force due to an indenter
|
"indent"_fix_indent.html - impose force due to an indenter
|
||||||
|
"latte"_fix_latte.html - wrapper on LATTE density-functional tight-binding code
|
||||||
"langevin"_fix_langevin.html - Langevin temperature control
|
"langevin"_fix_langevin.html - Langevin temperature control
|
||||||
"lineforce"_fix_lineforce.html - constrain atoms to move in a line
|
"lineforce"_fix_lineforce.html - constrain atoms to move in a line
|
||||||
"momentum"_fix_momentum.html - zero the linear and/or angular momentum of a group of atoms
|
"momentum"_fix_momentum.html - zero the linear and/or angular momentum of a group of atoms
|
||||||
|
|||||||
@ -139,6 +139,11 @@ forces added by this fix in a consistent manner. I.e. there is a
|
|||||||
decrease in potential energy when atoms move in the direction of the
|
decrease in potential energy when atoms move in the direction of the
|
||||||
added force.
|
added force.
|
||||||
|
|
||||||
|
The "fix_modify"_fix_modify.html {virial} option is supported by this
|
||||||
|
fix to add the contribution due to the added forces on atoms to the
|
||||||
|
system's virial as part of "thermodynamic output"_thermo_style.html.
|
||||||
|
The default is {virial no}
|
||||||
|
|
||||||
The "fix_modify"_fix_modify.html {respa} option is supported by this
|
The "fix_modify"_fix_modify.html {respa} option is supported by this
|
||||||
fix. This allows to set at which level of the "r-RESPA"_run_style.html
|
fix. This allows to set at which level of the "r-RESPA"_run_style.html
|
||||||
integrator the fix is adding its forces. Default is the outermost
|
integrator the fix is adding its forces. Default is the outermost
|
||||||
|
|||||||
@ -97,6 +97,11 @@ The "fix_modify"_fix_modify.html {energy} option is supported by this
|
|||||||
fix to add the potential "energy" of the CMAP interactions system's
|
fix to add the potential "energy" of the CMAP interactions system's
|
||||||
potential energy as part of "thermodynamic output"_thermo_style.html.
|
potential energy as part of "thermodynamic output"_thermo_style.html.
|
||||||
|
|
||||||
|
The "fix_modify"_fix_modify.html {virial} option is supported by this
|
||||||
|
fix to add the contribution due to the interaction between atoms to
|
||||||
|
the system's virial as part of "thermodynamic output"_thermo_style.html.
|
||||||
|
The default is {virial yes}
|
||||||
|
|
||||||
This fix computes a global scalar which can be accessed by various
|
This fix computes a global scalar which can be accessed by various
|
||||||
"output commands"_Section_howto.html#howto_15. The scalar is the
|
"output commands"_Section_howto.html#howto_15. The scalar is the
|
||||||
potential energy discussed above. The scalar value calculated by this
|
potential energy discussed above. The scalar value calculated by this
|
||||||
@ -115,6 +120,10 @@ quantity being minimized), you MUST enable the
|
|||||||
|
|
||||||
[Restrictions:]
|
[Restrictions:]
|
||||||
|
|
||||||
|
To function as expected this fix command must be issued {before} a
|
||||||
|
"read_data"_read_data.html command but {after} a
|
||||||
|
"read_restart"_read_restart.html command.
|
||||||
|
|
||||||
This fix can only be used if LAMMPS was built with the MOLECULE
|
This fix can only be used if LAMMPS was built with the MOLECULE
|
||||||
package. See the "Making
|
package. See the "Making
|
||||||
LAMMPS"_Section_start.html#start_3 section for more info on packages.
|
LAMMPS"_Section_start.html#start_3 section for more info on packages.
|
||||||
|
|||||||
@ -83,7 +83,7 @@ the following dynamic equation:
|
|||||||
:c,image(Eqs/fix_controller1.jpg)
|
:c,image(Eqs/fix_controller1.jpg)
|
||||||
|
|
||||||
where {c} is the continuous time analog of the control variable,
|
where {c} is the continuous time analog of the control variable,
|
||||||
{e}={pvar}-{setpoint} is the error in the process variable, and
|
{e} ={pvar}-{setpoint} is the error in the process variable, and
|
||||||
{alpha}, {Kp}, {Ki}, and {Kd} are constants set by the corresponding
|
{alpha}, {Kp}, {Ki}, and {Kd} are constants set by the corresponding
|
||||||
keywords described above. The discretized version of this equation is:
|
keywords described above. The discretized version of this equation is:
|
||||||
|
|
||||||
@ -106,10 +106,10 @@ the value of {alpha} to reflect this, while leaving {Kp}, {Ki}, and
|
|||||||
When choosing the values of the four constants, it is best to first
|
When choosing the values of the four constants, it is best to first
|
||||||
pick a value and sign for {alpha} that is consistent with the
|
pick a value and sign for {alpha} that is consistent with the
|
||||||
magnitudes and signs of {pvar} and {cvar}. The magnitude of {Kp}
|
magnitudes and signs of {pvar} and {cvar}. The magnitude of {Kp}
|
||||||
should then be tested over a large positive range keeping {Ki}={Kd}=0.
|
should then be tested over a large positive range keeping {Ki} = {Kd} =0.
|
||||||
A good value for {Kp} will produce a fast response in {pvar}, without
|
A good value for {Kp} will produce a fast response in {pvar}, without
|
||||||
overshooting the {setpoint}. For many applications, proportional
|
overshooting the {setpoint}. For many applications, proportional
|
||||||
feedback is sufficient, and so {Ki}={Kd}=0 can be used. In cases where
|
feedback is sufficient, and so {Ki} = {Kd} =0 can be used. In cases where
|
||||||
there is a substantial lag time in the response of {pvar} to a change
|
there is a substantial lag time in the response of {pvar} to a change
|
||||||
in {cvar}, this can be counteracted by increasing {Kd}. In situations
|
in {cvar}, this can be counteracted by increasing {Kd}. In situations
|
||||||
where {pvar} plateaus without reaching {setpoint}, this can be
|
where {pvar} plateaus without reaching {setpoint}, this can be
|
||||||
|
|||||||
@ -86,11 +86,16 @@ Change the volume and/or shape of the simulation box during a dynamics
|
|||||||
run. Orthogonal simulation boxes have 3 adjustable parameters
|
run. Orthogonal simulation boxes have 3 adjustable parameters
|
||||||
(x,y,z). Triclinic (non-orthogonal) simulation boxes have 6
|
(x,y,z). Triclinic (non-orthogonal) simulation boxes have 6
|
||||||
adjustable parameters (x,y,z,xy,xz,yz). Any or all of them can be
|
adjustable parameters (x,y,z,xy,xz,yz). Any or all of them can be
|
||||||
adjusted independently and simultaneously by this command. This fix
|
adjusted independently and simultaneously by this command.
|
||||||
can be used to perform non-equilibrium MD (NEMD) simulations of a
|
|
||||||
continuously strained system. See the "fix
|
This fix can be used to perform non-equilibrium MD (NEMD) simulations
|
||||||
|
of a continuously strained system. See the "fix
|
||||||
nvt/sllod"_fix_nvt_sllod.html and "compute
|
nvt/sllod"_fix_nvt_sllod.html and "compute
|
||||||
temp/deform"_compute_temp_deform.html commands for more details.
|
temp/deform"_compute_temp_deform.html commands for more details. Note
|
||||||
|
that simulation of a continuously extended system (extensional flow)
|
||||||
|
can be modeled using the "USER-UEF
|
||||||
|
package"_Section_packages.html#USER-UEF and its "fix
|
||||||
|
commands"_fix_nh_uef.html.
|
||||||
|
|
||||||
For the {x}, {y}, {z} parameters, the associated dimension cannot be
|
For the {x}, {y}, {z} parameters, the associated dimension cannot be
|
||||||
shrink-wrapped. For the {xy}, {yz}, {xz} parameters, the associated
|
shrink-wrapped. For the {xy}, {yz}, {xz} parameters, the associated
|
||||||
|
|||||||
@ -7,6 +7,7 @@
|
|||||||
:line
|
:line
|
||||||
|
|
||||||
fix dpd/energy command :h3
|
fix dpd/energy command :h3
|
||||||
|
fix dpd/energy/kk command :h3
|
||||||
|
|
||||||
[Syntax:]
|
[Syntax:]
|
||||||
|
|
||||||
@ -46,6 +47,29 @@ examples/USER/dpd directory.
|
|||||||
|
|
||||||
:line
|
:line
|
||||||
|
|
||||||
|
Styles with a {gpu}, {intel}, {kk}, {omp}, or {opt} suffix are
|
||||||
|
functionally the same as the corresponding style without the suffix.
|
||||||
|
They have been optimized to run faster, depending on your available
|
||||||
|
hardware, as discussed in "Section 5"_Section_accelerate.html
|
||||||
|
of the manual. The accelerated styles take the same arguments and
|
||||||
|
should produce the same results, except for round-off and precision
|
||||||
|
issues.
|
||||||
|
|
||||||
|
These accelerated styles are part of the GPU, USER-INTEL, KOKKOS,
|
||||||
|
USER-OMP and OPT packages, respectively. They are only enabled if
|
||||||
|
LAMMPS was built with those packages. See the "Making
|
||||||
|
LAMMPS"_Section_start.html#start_3 section for more info.
|
||||||
|
|
||||||
|
You can specify the accelerated styles explicitly in your input script
|
||||||
|
by including their suffix, or you can use the "-suffix command-line
|
||||||
|
switch"_Section_start.html#start_6 when you invoke LAMMPS, or you can
|
||||||
|
use the "suffix"_suffix.html command in your input script.
|
||||||
|
|
||||||
|
See "Section 5"_Section_accelerate.html of the manual for
|
||||||
|
more instructions on how to use the accelerated styles effectively.
|
||||||
|
|
||||||
|
:line
|
||||||
|
|
||||||
[Restrictions:]
|
[Restrictions:]
|
||||||
|
|
||||||
This command is part of the USER-DPD package. It is only enabled if
|
This command is part of the USER-DPD package. It is only enabled if
|
||||||
|
|||||||
@ -124,6 +124,11 @@ can include the forces added by this fix in a consistent manner.
|
|||||||
I.e. there is a decrease in potential energy when atoms move in the
|
I.e. there is a decrease in potential energy when atoms move in the
|
||||||
direction of the added force due to the electric field.
|
direction of the added force due to the electric field.
|
||||||
|
|
||||||
|
The "fix_modify"_fix_modify.html {virial} option is supported by this
|
||||||
|
fix to add the contribution due to the added forces on atoms to the
|
||||||
|
system's virial as part of "thermodynamic output"_thermo_style.html.
|
||||||
|
The default is {virial no}
|
||||||
|
|
||||||
The "fix_modify"_fix_modify.html {respa} option is supported by this
|
The "fix_modify"_fix_modify.html {respa} option is supported by this
|
||||||
fix. This allows to set at which level of the "r-RESPA"_run_style.html
|
fix. This allows to set at which level of the "r-RESPA"_run_style.html
|
||||||
integrator the fix adding its forces. Default is the outermost level.
|
integrator the fix adding its forces. Default is the outermost level.
|
||||||
|
|||||||
@ -7,6 +7,7 @@
|
|||||||
:line
|
:line
|
||||||
|
|
||||||
fix eos/table/rx command :h3
|
fix eos/table/rx command :h3
|
||||||
|
fix eos/table/rx/kk command :h3
|
||||||
|
|
||||||
[Syntax:]
|
[Syntax:]
|
||||||
|
|
||||||
@ -152,6 +153,29 @@ no 0.93 0.00 0.000 -1.76 :pre
|
|||||||
|
|
||||||
:line
|
:line
|
||||||
|
|
||||||
|
Styles with a {gpu}, {intel}, {kk}, {omp}, or {opt} suffix are
|
||||||
|
functionally the same as the corresponding style without the suffix.
|
||||||
|
They have been optimized to run faster, depending on your available
|
||||||
|
hardware, as discussed in "Section 5"_Section_accelerate.html
|
||||||
|
of the manual. The accelerated styles take the same arguments and
|
||||||
|
should produce the same results, except for round-off and precision
|
||||||
|
issues.
|
||||||
|
|
||||||
|
These accelerated styles are part of the GPU, USER-INTEL, KOKKOS,
|
||||||
|
USER-OMP and OPT packages, respectively. They are only enabled if
|
||||||
|
LAMMPS was built with those packages. See the "Making
|
||||||
|
LAMMPS"_Section_start.html#start_3 section for more info.
|
||||||
|
|
||||||
|
You can specify the accelerated styles explicitly in your input script
|
||||||
|
by including their suffix, or you can use the "-suffix command-line
|
||||||
|
switch"_Section_start.html#start_6 when you invoke LAMMPS, or you can
|
||||||
|
use the "suffix"_suffix.html command in your input script.
|
||||||
|
|
||||||
|
See "Section 5"_Section_accelerate.html of the manual for
|
||||||
|
more instructions on how to use the accelerated styles effectively.
|
||||||
|
|
||||||
|
:line
|
||||||
|
|
||||||
[Restrictions:]
|
[Restrictions:]
|
||||||
|
|
||||||
This command is part of the USER-DPD package. It is only enabled if
|
This command is part of the USER-DPD package. It is only enabled if
|
||||||
|
|||||||
@ -131,6 +131,11 @@ forces added by this fix in a consistent manner. I.e. there is a
|
|||||||
decrease in potential energy when atoms move in the direction of the
|
decrease in potential energy when atoms move in the direction of the
|
||||||
added force.
|
added force.
|
||||||
|
|
||||||
|
The "fix_modify"_fix_modify.html {virial} option is supported by this
|
||||||
|
fix to add the contribution due to the interactions computed by the
|
||||||
|
external program to the system's virial as part of "thermodynamic
|
||||||
|
output"_thermo_style.html. The default is {virial yes}
|
||||||
|
|
||||||
This fix computes a global scalar which can be accessed by various
|
This fix computes a global scalar which can be accessed by various
|
||||||
"output commands"_Section_howto.html#howto_15. The scalar is the
|
"output commands"_Section_howto.html#howto_15. The scalar is the
|
||||||
potential energy discussed above. The scalar stored by this fix
|
potential energy discussed above. The scalar stored by this fix
|
||||||
|
|||||||
@ -26,16 +26,20 @@ zero or more keyword/value pairs may be appended to args :l
|
|||||||
keyword = {mol}, {region}, {maxangle}, {pressure}, {fugacity_coeff}, {full_energy}, {charge}, {group}, {grouptype}, {intra_energy}, {tfac_insert}, or {overlap_cutoff}
|
keyword = {mol}, {region}, {maxangle}, {pressure}, {fugacity_coeff}, {full_energy}, {charge}, {group}, {grouptype}, {intra_energy}, {tfac_insert}, or {overlap_cutoff}
|
||||||
{mol} value = template-ID
|
{mol} value = template-ID
|
||||||
template-ID = ID of molecule template specified in a separate "molecule"_molecule.html command
|
template-ID = ID of molecule template specified in a separate "molecule"_molecule.html command
|
||||||
|
{mcmoves} values = Patomtrans Pmoltrans Pmolrotate
|
||||||
|
Patomtrans = proportion of atom translation MC moves
|
||||||
|
Pmoltrans = proportion of molecule translation MC moves
|
||||||
|
Pmolrotate = proportion of molecule rotation MC moves
|
||||||
{rigid} value = fix-ID
|
{rigid} value = fix-ID
|
||||||
fix-ID = ID of "fix rigid/small"_fix_rigid.html command
|
fix-ID = ID of "fix rigid/small"_fix_rigid.html command
|
||||||
{shake} value = fix-ID
|
{shake} value = fix-ID
|
||||||
fix-ID = ID of "fix shake"_fix_shake.html command
|
fix-ID = ID of "fix shake"_fix_shake.html command
|
||||||
{region} value = region-ID
|
{region} value = region-ID
|
||||||
region-ID = ID of region where MC moves are allowed
|
region-ID = ID of region where GCMC exchanges and MC moves are allowed
|
||||||
{maxangle} value = maximum molecular rotation angle (degrees)
|
{maxangle} value = maximum molecular rotation angle (degrees)
|
||||||
{pressure} value = pressure of the gas reservoir (pressure units)
|
{pressure} value = pressure of the gas reservoir (pressure units)
|
||||||
{fugacity_coeff} value = fugacity coefficient of the gas reservoir (unitless)
|
{fugacity_coeff} value = fugacity coefficient of the gas reservoir (unitless)
|
||||||
{full_energy} = compute the entire system energy when performing MC moves
|
{full_energy} = compute the entire system energy when performing GCMC exchanges and MC moves
|
||||||
{charge} value = charge of inserted atoms (charge units)
|
{charge} value = charge of inserted atoms (charge units)
|
||||||
{group} value = group-ID
|
{group} value = group-ID
|
||||||
group-ID = group-ID for inserted atoms (string)
|
group-ID = group-ID for inserted atoms (string)
|
||||||
@ -56,34 +60,42 @@ fix 4 my_gas gcmc 1 10 10 1 123456543 300.0 -12.5 1.0 region disk :pre
|
|||||||
[Description:]
|
[Description:]
|
||||||
|
|
||||||
This fix performs grand canonical Monte Carlo (GCMC) exchanges of
|
This fix performs grand canonical Monte Carlo (GCMC) exchanges of
|
||||||
atoms or molecules of the given type with an imaginary ideal gas
|
atoms or molecules with an imaginary ideal gas
|
||||||
reservoir at the specified T and chemical potential (mu) as discussed
|
reservoir at the specified T and chemical potential (mu) as discussed
|
||||||
in "(Frenkel)"_#Frenkel. If used with the "fix nvt"_fix_nh.html
|
in "(Frenkel)"_#Frenkel. It also
|
||||||
|
attempts Monte Carlo (MC) moves (translations and molecule
|
||||||
|
rotations) within the simulation cell or
|
||||||
|
region. If used with the "fix nvt"_fix_nh.html
|
||||||
command, simulations in the grand canonical ensemble (muVT, constant
|
command, simulations in the grand canonical ensemble (muVT, constant
|
||||||
chemical potential, constant volume, and constant temperature) can be
|
chemical potential, constant volume, and constant temperature) can be
|
||||||
performed. Specific uses include computing isotherms in microporous
|
performed. Specific uses include computing isotherms in microporous
|
||||||
materials, or computing vapor-liquid coexistence curves.
|
materials, or computing vapor-liquid coexistence curves.
|
||||||
|
|
||||||
Every N timesteps the fix attempts a number of GCMC exchanges
|
Every N timesteps the fix attempts both GCMC exchanges
|
||||||
(insertions or deletions) of gas atoms or molecules of the given type
|
(insertions or deletions) and MC moves of gas atoms or molecules.
|
||||||
between the simulation cell and the imaginary reservoir. It also
|
On those timesteps, the average number of attempted GCMC exchanges is X,
|
||||||
attempts a number of Monte Carlo moves (translations and molecule
|
while the average number of attempted MC moves is M.
|
||||||
rotations) of gas of the given type within the simulation cell or
|
For GCMC exchanges of either molecular or atomic gasses,
|
||||||
region. The average number of attempted GCMC exchanges is X. The
|
these exchanges can be either deletions or insertions,
|
||||||
average number of attempted MC moves is M. M should typically be
|
with equal probability.
|
||||||
|
|
||||||
|
The possible choices for MC moves are translation of an atom,
|
||||||
|
translation of a molecule, and rotation of a molecule.
|
||||||
|
The relative amounts of each are determined by the optional
|
||||||
|
{mcmoves} keyword (see below).
|
||||||
|
The default behavior is as follows.
|
||||||
|
If the {mol} keyword is used, only molecule translations
|
||||||
|
and molecule rotations are performed with equal probability.
|
||||||
|
Conversely, if the {mol} keyword is not used, only atom
|
||||||
|
translations are performed.
|
||||||
|
M should typically be
|
||||||
chosen to be approximately equal to the expected number of gas atoms
|
chosen to be approximately equal to the expected number of gas atoms
|
||||||
or molecules of the given type within the simulation cell or region,
|
or molecules of the given type within the simulation cell or region,
|
||||||
which will result in roughly one MC translation per atom or molecule
|
which will result in roughly one MC move per atom or molecule
|
||||||
per MC cycle.
|
per MC cycle.
|
||||||
|
|
||||||
For MC moves of molecular gasses, rotations and translations are each
|
All inserted particles are always added to two groups: the default
|
||||||
attempted with 50% probability. For MC moves of atomic gasses,
|
group "all" and the fix group specified in the fix command (which can
|
||||||
translations are attempted 100% of the time. For MC exchanges of
|
|
||||||
either molecular or atomic gasses, deletions and insertions are each
|
|
||||||
attempted with 50% probability.
|
|
||||||
|
|
||||||
All inserted particles are always assigned to two groups: the default
|
|
||||||
group "all" and the group specified in the fix gcmc command (which can
|
|
||||||
also be "all"). In addition, particles are also added to any groups
|
also be "all"). In addition, particles are also added to any groups
|
||||||
specified by the {group} and {grouptype} keywords. If inserted
|
specified by the {group} and {grouptype} keywords. If inserted
|
||||||
particles are individual atoms, they are assigned the atom type given
|
particles are individual atoms, they are assigned the atom type given
|
||||||
@ -92,9 +104,9 @@ effect and must be set to zero. Instead, the type of each atom in the
|
|||||||
inserted molecule is specified in the file read by the
|
inserted molecule is specified in the file read by the
|
||||||
"molecule"_molecule.html command.
|
"molecule"_molecule.html command.
|
||||||
|
|
||||||
This fix cannot be used to perform MC insertions of gas atoms or
|
This fix cannot be used to perform GCMC insertions of gas atoms or
|
||||||
molecules other than the exchanged type, but MC deletions,
|
molecules other than the exchanged type, but GCMC deletions,
|
||||||
translations, and rotations can be performed on any atom/molecule in
|
and MC translations, and rotations can be performed on any atom/molecule in
|
||||||
the fix group. All atoms in the simulation cell can be moved using
|
the fix group. All atoms in the simulation cell can be moved using
|
||||||
regular time integration translations, e.g. via "fix nvt"_fix_nh.html,
|
regular time integration translations, e.g. via "fix nvt"_fix_nh.html,
|
||||||
resulting in a hybrid GCMC+MD simulation. A smaller-than-usual
|
resulting in a hybrid GCMC+MD simulation. A smaller-than-usual
|
||||||
@ -150,8 +162,8 @@ about this point.
|
|||||||
Individual atoms are inserted, unless the {mol} keyword is used. It
|
Individual atoms are inserted, unless the {mol} keyword is used. It
|
||||||
specifies a {template-ID} previously defined using the
|
specifies a {template-ID} previously defined using the
|
||||||
"molecule"_molecule.html command, which reads a file that defines the
|
"molecule"_molecule.html command, which reads a file that defines the
|
||||||
molecule. The coordinates, atom types, charges, etc, as well as any
|
molecule. The coordinates, atom types, charges, etc., as well as any
|
||||||
bond/angle/etc and special neighbor information for the molecule can
|
bonding and special neighbor information for the molecule can
|
||||||
be specified in the molecule file. See the "molecule"_molecule.html
|
be specified in the molecule file. See the "molecule"_molecule.html
|
||||||
command for details. The only settings required to be in this file
|
command for details. The only settings required to be in this file
|
||||||
are the coordinates and types of atoms in the molecule.
|
are the coordinates and types of atoms in the molecule.
|
||||||
@ -162,7 +174,7 @@ error when it tries to find bonded neighbors. LAMMPS will warn you if
|
|||||||
any of the atoms eligible for deletion have a non-zero molecule ID,
|
any of the atoms eligible for deletion have a non-zero molecule ID,
|
||||||
but does not check for this at the time of deletion.
|
but does not check for this at the time of deletion.
|
||||||
|
|
||||||
If you wish to insert molecules via the {mol} keyword, that will be
|
If you wish to insert molecules using the {mol} keyword that will be
|
||||||
treated as rigid bodies, use the {rigid} keyword, specifying as its
|
treated as rigid bodies, use the {rigid} keyword, specifying as its
|
||||||
value the ID of a separate "fix rigid/small"_fix_rigid.html command
|
value the ID of a separate "fix rigid/small"_fix_rigid.html command
|
||||||
which also appears in your input script.
|
which also appears in your input script.
|
||||||
@ -178,6 +190,15 @@ their bonds or angles constrained via SHAKE, use the {shake} keyword,
|
|||||||
specifying as its value the ID of a separate "fix
|
specifying as its value the ID of a separate "fix
|
||||||
shake"_fix_shake.html command which also appears in your input script.
|
shake"_fix_shake.html command which also appears in your input script.
|
||||||
|
|
||||||
|
Optionally, users may specify the relative amounts of different MC
|
||||||
|
moves using the {mcmoves} keyword. The values {Patomtrans},
|
||||||
|
{Pmoltrans}, {Pmolrotate} specify the average proportion of
|
||||||
|
atom translations, molecule translations, and molecule rotations,
|
||||||
|
respectively. The values must be non-negative integers or real
|
||||||
|
numbers, with at least one non-zero value. For example, (10,30,0)
|
||||||
|
would result in 25% of the MC moves being atomic translations, 75%
|
||||||
|
molecular translations, and no molecular rotations.
|
||||||
|
|
||||||
Optionally, users may specify the maximum rotation angle for molecular
|
Optionally, users may specify the maximum rotation angle for molecular
|
||||||
rotations using the {maxangle} keyword and specifying the angle in
|
rotations using the {maxangle} keyword and specifying the angle in
|
||||||
degrees. Rotations are performed by generating a random point on the
|
degrees. Rotations are performed by generating a random point on the
|
||||||
@ -188,19 +209,19 @@ to the unit vector defined by the point on the unit sphere. The same
|
|||||||
procedure is used for randomly rotating molecules when they are
|
procedure is used for randomly rotating molecules when they are
|
||||||
inserted, except that the maximum angle is 360 degrees.
|
inserted, except that the maximum angle is 360 degrees.
|
||||||
|
|
||||||
Note that fix GCMC does not use configurational bias MC or any other
|
Note that fix gcmc does not use configurational bias MC or any other
|
||||||
kind of sampling of intramolecular degrees of freedom. Inserted
|
kind of sampling of intramolecular degrees of freedom. Inserted
|
||||||
molecules can have different orientations, but they will all have the
|
molecules can have different orientations, but they will all have the
|
||||||
same intramolecular configuration, which was specified in the molecule
|
same intramolecular configuration, which was specified in the molecule
|
||||||
command input.
|
command input.
|
||||||
|
|
||||||
For atomic gasses, inserted atoms have the specified atom type, but
|
For atomic gasses, inserted atoms have the specified atom type, but
|
||||||
deleted atoms are any atoms that have been inserted or that belong to
|
deleted atoms are any atoms that have been inserted or that already
|
||||||
the user-specified fix group. For molecular gasses, exchanged
|
belong to the fix group. For molecular gasses, exchanged
|
||||||
molecules use the same atom types as in the template molecule supplied
|
molecules use the same atom types as in the template molecule supplied
|
||||||
by the user. In both cases, exchanged atoms/molecules are assigned to
|
by the user. In both cases, exchanged atoms/molecules are assigned to
|
||||||
two groups: the default group "all" and the group specified in the fix
|
two groups: the default group "all" and the fix group
|
||||||
gcmc command (which can also be "all").
|
(which can also be "all").
|
||||||
|
|
||||||
The chemical potential is a user-specified input parameter defined
|
The chemical potential is a user-specified input parameter defined
|
||||||
as:
|
as:
|
||||||
@ -241,13 +262,16 @@ which case the user-specified chemical potential is ignored. The user
|
|||||||
may also specify the fugacity coefficient phi using the
|
may also specify the fugacity coefficient phi using the
|
||||||
{fugacity_coeff} keyword, which defaults to unity.
|
{fugacity_coeff} keyword, which defaults to unity.
|
||||||
|
|
||||||
The {full_energy} option means that fix GCMC will compute the total
|
The {full_energy} option means that the fix calculates the total
|
||||||
potential energy of the entire simulated system. The total system
|
potential energy of the entire simulated system, instead of just
|
||||||
energy before and after the proposed GCMC move is then used in the
|
the energy of the part that is changed. The total system
|
||||||
|
energy before and after the proposed GCMC exchange or MC move
|
||||||
|
is then used in the
|
||||||
Metropolis criterion to determine whether or not to accept the
|
Metropolis criterion to determine whether or not to accept the
|
||||||
proposed GCMC move. By default, this option is off, in which case only
|
proposed change. By default, this option is off,
|
||||||
partial energies are computed to determine the difference in energy
|
in which case only
|
||||||
that would be caused by the proposed GCMC move.
|
partial energies are computed to determine the energy difference
|
||||||
|
due to the proposed change.
|
||||||
|
|
||||||
The {full_energy} option is needed for systems with complicated
|
The {full_energy} option is needed for systems with complicated
|
||||||
potential energy calculations, including the following:
|
potential energy calculations, including the following:
|
||||||
@ -263,10 +287,11 @@ In these cases, LAMMPS will automatically apply the {full_energy}
|
|||||||
keyword and issue a warning message.
|
keyword and issue a warning message.
|
||||||
|
|
||||||
When the {mol} keyword is used, the {full_energy} option also includes
|
When the {mol} keyword is used, the {full_energy} option also includes
|
||||||
the intramolecular energy of inserted and deleted molecules. If this
|
the intramolecular energy of inserted and deleted molecules, whereas
|
||||||
|
this energy is not included when {full_energy} is not used. If this
|
||||||
is not desired, the {intra_energy} keyword can be used to define an
|
is not desired, the {intra_energy} keyword can be used to define an
|
||||||
amount of energy that is subtracted from the final energy when a
|
amount of energy that is subtracted from the final energy when a
|
||||||
molecule is inserted, and added to the initial energy when a molecule
|
molecule is inserted, and subtracted from the initial energy when a molecule
|
||||||
is deleted. For molecules that have a non-zero intramolecular energy,
|
is deleted. For molecules that have a non-zero intramolecular energy,
|
||||||
this will ensure roughly the same behavior whether or not the
|
this will ensure roughly the same behavior whether or not the
|
||||||
{full_energy} option is used.
|
{full_energy} option is used.
|
||||||
@ -291,7 +316,8 @@ include: "efield"_fix_efield.html, "gravity"_fix_gravity.html,
|
|||||||
"temp/berendsen"_fix_temp_berendsen.html,
|
"temp/berendsen"_fix_temp_berendsen.html,
|
||||||
"temp/rescale"_fix_temp_rescale.html, and "wall fixes"_fix_wall.html.
|
"temp/rescale"_fix_temp_rescale.html, and "wall fixes"_fix_wall.html.
|
||||||
For that energy to be included in the total potential energy of the
|
For that energy to be included in the total potential energy of the
|
||||||
system (the quantity used when performing GCMC moves), you MUST enable
|
system (the quantity used when performing GCMC exchange and MC moves),
|
||||||
|
you MUST enable
|
||||||
the "fix_modify"_fix_modify.html {energy} option for that fix. The
|
the "fix_modify"_fix_modify.html {energy} option for that fix. The
|
||||||
doc pages for individual "fix"_fix.html commands specify if this
|
doc pages for individual "fix"_fix.html commands specify if this
|
||||||
should be done.
|
should be done.
|
||||||
@ -305,9 +331,14 @@ about simulating non-neutral systems with kspace on.
|
|||||||
|
|
||||||
Use of this fix typically will cause the number of atoms to fluctuate,
|
Use of this fix typically will cause the number of atoms to fluctuate,
|
||||||
therefore, you will want to use the
|
therefore, you will want to use the
|
||||||
"compute_modify"_compute_modify.html command to insure that the
|
"compute_modify dynamic/dof"_compute_modify.html command to insure that the
|
||||||
current number of atoms is used as a normalizing factor each time
|
current number of atoms is used as a normalizing factor each time
|
||||||
temperature is computed. Here is the necessary command:
|
temperature is computed. A simple example of this is:
|
||||||
|
|
||||||
|
compute_modify thermo_temp dynamic yes :pre
|
||||||
|
|
||||||
|
A more complicated example is listed earlier on this page
|
||||||
|
in the context of NVT dynamics.
|
||||||
|
|
||||||
NOTE: If the density of the cell is initially very small or zero, and
|
NOTE: If the density of the cell is initially very small or zero, and
|
||||||
increases to a much larger density after a period of equilibration,
|
increases to a much larger density after a period of equilibration,
|
||||||
@ -327,17 +358,9 @@ assigning an infinite positive energy to all new configurations that
|
|||||||
place any pair of atoms closer than the specified overlap cutoff
|
place any pair of atoms closer than the specified overlap cutoff
|
||||||
distance.
|
distance.
|
||||||
|
|
||||||
compute_modify thermo_temp dynamic yes :pre
|
The {group} keyword adds all inserted atoms to the
|
||||||
|
|
||||||
If LJ units are used, note that a value of 0.18292026 is used by this
|
|
||||||
fix as the reduced value for Planck's constant. This value was
|
|
||||||
derived from LJ parameters for argon, where h* = h/sqrt(sigma^2 *
|
|
||||||
epsilon * mass), sigma = 3.429 angstroms, epsilon/k = 121.85 K, and
|
|
||||||
mass = 39.948 amu.
|
|
||||||
|
|
||||||
The {group} keyword assigns all inserted atoms to the
|
|
||||||
"group"_group.html of the group-ID value. The {grouptype} keyword
|
"group"_group.html of the group-ID value. The {grouptype} keyword
|
||||||
assigns all inserted atoms of the specified type to the
|
adds all inserted atoms of the specified type to the
|
||||||
"group"_group.html of the group-ID value.
|
"group"_group.html of the group-ID value.
|
||||||
|
|
||||||
[Restart, fix_modify, output, run start/stop, minimize info:]
|
[Restart, fix_modify, output, run start/stop, minimize info:]
|
||||||
@ -384,7 +407,8 @@ Can be run in parallel, but aspects of the GCMC part will not scale
|
|||||||
well in parallel. Only usable for 3D simulations.
|
well in parallel. Only usable for 3D simulations.
|
||||||
|
|
||||||
When using fix gcmc in combination with fix shake or fix rigid,
|
When using fix gcmc in combination with fix shake or fix rigid,
|
||||||
only gcmc exchange moves are supported.
|
only GCMC exchange moves are supported, so the argument
|
||||||
|
{M} must be zero.
|
||||||
|
|
||||||
Note that very lengthy simulations involving insertions/deletions of
|
Note that very lengthy simulations involving insertions/deletions of
|
||||||
billions of gas molecules may run out of atom or molecule IDs and
|
billions of gas molecules may run out of atom or molecule IDs and
|
||||||
@ -409,7 +433,9 @@ the user for each subsequent fix gcmc command.
|
|||||||
[Default:]
|
[Default:]
|
||||||
|
|
||||||
The option defaults are mol = no, maxangle = 10, overlap_cutoff = 0.0,
|
The option defaults are mol = no, maxangle = 10, overlap_cutoff = 0.0,
|
||||||
fugacity_coeff = 1, and full_energy = no,
|
fugacity_coeff = 1.0, intra_energy = 0.0, tfac_insert = 1.0.
|
||||||
|
(Patomtrans, Pmoltrans, Pmolrotate) = (1, 0, 0) for mol = no and
|
||||||
|
(0, 1, 1) for mol = yes. full_energy = no,
|
||||||
except for the situations where full_energy is required, as
|
except for the situations where full_energy is required, as
|
||||||
listed above.
|
listed above.
|
||||||
|
|
||||||
|
|||||||
@ -64,10 +64,10 @@ not performed once every {N} steps by this command. Instead it is
|
|||||||
performed (typically) only a small number of times and the elapsed
|
performed (typically) only a small number of times and the elapsed
|
||||||
times are used to predict when the end-of-the-run will be. Both of
|
times are used to predict when the end-of-the-run will be. Both of
|
||||||
these attributes can be useful when performing benchmark calculations
|
these attributes can be useful when performing benchmark calculations
|
||||||
for a desired length of time with minmimal overhead. For example, if
|
for a desired length of time with minimal overhead. For example, if
|
||||||
a run is performing 1000s of timesteps/sec, the overhead for syncing
|
a run is performing 1000s of timesteps/sec, the overhead for syncing
|
||||||
the timer frequently across a large number of processors may be
|
the timer frequently across a large number of processors may be
|
||||||
non-negligble.
|
non-negligible.
|
||||||
|
|
||||||
Equal-style variables evaluate to a numeric value. See the
|
Equal-style variables evaluate to a numeric value. See the
|
||||||
"variable"_variable.html command for a description. They calculate
|
"variable"_variable.html command for a description. They calculate
|
||||||
@ -125,7 +125,7 @@ to the screen and logfile when the halt condition is triggered. If
|
|||||||
{message} is set to yes, a one line message with the values that
|
{message} is set to yes, a one line message with the values that
|
||||||
triggered the halt is printed. If {message} is set to no, no message
|
triggered the halt is printed. If {message} is set to no, no message
|
||||||
is printed; the run simply exits. The latter may be desirable for
|
is printed; the run simply exits. The latter may be desirable for
|
||||||
post-processing tools that extract thermodyanmic information from log
|
post-processing tools that extract thermodynamic information from log
|
||||||
files.
|
files.
|
||||||
|
|
||||||
[Restart, fix_modify, output, run start/stop, minimize info:]
|
[Restart, fix_modify, output, run start/stop, minimize info:]
|
||||||
|
|||||||
210
doc/src/fix_latte.txt
Normal file
@ -0,0 +1,210 @@
|
|||||||
|
"LAMMPS WWW Site"_lws - "LAMMPS Documentation"_ld - "LAMMPS Commands"_lc :c
|
||||||
|
|
||||||
|
:link(lws,http://lammps.sandia.gov)
|
||||||
|
:link(ld,Manual.html)
|
||||||
|
:link(lc,Section_commands.html#comm)
|
||||||
|
|
||||||
|
:line
|
||||||
|
|
||||||
|
fix latte command :h3
|
||||||
|
|
||||||
|
[Syntax:]
|
||||||
|
|
||||||
|
fix ID group-ID latte peID :pre
|
||||||
|
|
||||||
|
ID, group-ID are documented in "fix"_fix.html command
|
||||||
|
latte = style name of this fix command
|
||||||
|
peID = NULL or ID of compute used to calculate per-atom energy :ul
|
||||||
|
|
||||||
|
[Examples:]
|
||||||
|
|
||||||
|
fix dftb all latte NULL :pre
|
||||||
|
|
||||||
|
[Description:]
|
||||||
|
|
||||||
|
This fix style is a wrapper on the self-consistent charge transfer
|
||||||
|
density functional based tight binding (DFTB) code LATTE. If you
|
||||||
|
download and build LATTE, it can be called as a library by LAMMPS via
|
||||||
|
this fix to run dynamics or perform energy minimization using DFTB
|
||||||
|
forces and energies computed by LATTE.
|
||||||
|
|
||||||
|
LATTE is principally developed and supported by Marc Cawkwell and
|
||||||
|
co-workers at Los Alamos National Laboratory (LANL). See the full
|
||||||
|
list of contributors in the src/LATTE/README file.
|
||||||
|
|
||||||
|
To use this fix, the LATTE program needs to be compiled as a library
|
||||||
|
and linked with LAMMPS. LATTE can be downloaded (or cloned) from
|
||||||
|
"https://github.com/lanl/LATTE"_https://github.com/lanl/LATTE.
|
||||||
|
Instructions on how to download and build LATTE on your system can be
|
||||||
|
found in the lib/latte/README. Note that you can also use the "make
|
||||||
|
lib-latte" command from the LAMMPS src directory to automate this
|
||||||
|
process.
|
||||||
|
|
||||||
|
Once LAMMPS is built with the LATTE package, you can run the example
|
||||||
|
input scripts for molecular dynamics or energy minimization that are
|
||||||
|
found in examples/latte.
|
||||||
|
|
||||||
|
A step-by-step tutorial can be follwed at: "LAMMPS-LATTE
|
||||||
|
tutorial"_https://github.com/lanl/LATTE/wiki/Using-LATTE-through-LAMMPS
|
||||||
|
|
||||||
|
The {peID} argument is not yet supported by fix latte, so it must be
|
||||||
|
specified as NULL. Eventually it will be used to enable LAMMPS to
|
||||||
|
calculate a Coulomb potential as an alternative to LATTE performing
|
||||||
|
the calculation.
|
||||||
|
|
||||||
|
:line
|
||||||
|
|
||||||
|
LATTE is a code for performing self-consistent charge transfer
|
||||||
|
tight-binding (SC-TB) calculations of total energies and the forces
|
||||||
|
acting on atoms in molecules and solids. This tight-binding method is
|
||||||
|
becoming more and more popular and widely used in chemistry,
|
||||||
|
biochemistry, material science, etc.
|
||||||
|
|
||||||
|
The SC-TB formalism is derived from an expansion of the Kohn-Sham
|
||||||
|
density functional to second order in charge fluctuations about a
|
||||||
|
reference charge of overlapping atom-centered densities and bond
|
||||||
|
integrals are parameterized using a Slater-Koster tight-binding
|
||||||
|
approach. This procedure, which usually is referred to as the DFTB
|
||||||
|
method has been described in detail by ("Elstner"_#Elstner) and
|
||||||
|
("Finnis"_#Finnis2) and coworkers.
|
||||||
|
|
||||||
|
The work of the LATTE developers follows that of Elstner closely with
|
||||||
|
respect to the physical model. However, the development of LATTE is
|
||||||
|
geared principally toward large-scale, long duration, microcanonical
|
||||||
|
quantum-based Born-Oppenheimer molecular dynamics (QMD) simulations.
|
||||||
|
One of the main bottlenecks of an electronic structure calculation is
|
||||||
|
the solution of the generalized eigenvalue problem which scales with
|
||||||
|
the cube of the system size O(N^3).
|
||||||
|
|
||||||
|
The Theoretical and Computer sciences divisions at Los Alamos National
|
||||||
|
Laboratory have accumulated large experience addressing this issue by
|
||||||
|
calculating the density matrix directly instead of using
|
||||||
|
diagonalization. We typically use a recursive sparse Fermi-operator
|
||||||
|
expansion using second-order spectral projection functions
|
||||||
|
(SP2-algorithm), which was introduced by Niklasson in 2002
|
||||||
|
("Niklasson2002"_#Niklasson2002), ("Rubensson"_#Rubensson),
|
||||||
|
("Mniszewski"_#Mniszewski). When the matrices involved in the
|
||||||
|
recursive expansion are sufficiently sparse, the calculation of the
|
||||||
|
density matrix scales linearly as a function of the system size O(N).
|
||||||
|
|
||||||
|
Another important feature is the extended Lagrangian framework for
|
||||||
|
Born-Oppenheimer molecular dynamics (XL-BOMD)
|
||||||
|
("Niklasson2008"_#Niklasson2008) ("Niklasson2014"_#Niklasson2014),
|
||||||
|
("Niklasson2017"_#Niklasson2017) that allows for a drastic reduction
|
||||||
|
or even a complete removal of the iterative self-consistent field
|
||||||
|
optimization. Often only a single density matrix calculation per
|
||||||
|
molecular dynamics time step is required, yet total energy stability
|
||||||
|
is well maintained. The SP2 and XL-BOMD techniques enables stable
|
||||||
|
linear scaling MD simulations with a very small computational
|
||||||
|
overhead. This opens a number of opportunities in many different
|
||||||
|
areas of chemistry and materials science, as we now can simulate
|
||||||
|
larger system sizes and longer time scales
|
||||||
|
("Cawkwell2012"_#Cawkwell2012), ("Negre2016"_#Negre2016).
|
||||||
|
|
||||||
|
:line
|
||||||
|
|
||||||
|
[Restart, fix_modify, output, run start/stop, minimize info:]
|
||||||
|
|
||||||
|
No information about this fix is written to "binary restart
|
||||||
|
files"_restart.html.
|
||||||
|
|
||||||
|
The "fix_modify"_fix_modify.html {energy} option is supported by this
|
||||||
|
fix to add the potential energy computed by LATTE to the system's
|
||||||
|
potential energy as part of "thermodynamic output"_thermo_style.html.
|
||||||
|
|
||||||
|
The "fix_modify"_fix_modify.html {virial} option is supported by this
|
||||||
|
fix to add the LATTE DFTB contribution to the system's virial as part
|
||||||
|
of "thermodynamic output"_thermo_style.html. The default is {virial
|
||||||
|
yes}
|
||||||
|
|
||||||
|
This fix computes a global scalar which can be accessed by various
|
||||||
|
"output commands"_Section_howto.html#howto_15. The scalar is the
|
||||||
|
potential energy discussed above. The scalar value calculated by this
|
||||||
|
fix is "extensive".
|
||||||
|
|
||||||
|
No parameter of this fix can be used with the {start/stop} keywords of
|
||||||
|
the "run"_run.html command.
|
||||||
|
|
||||||
|
The DFTB forces computed by LATTE via this fix are imposed during an
|
||||||
|
energy minimization, invoked by the "minimize"_minimize.html command.
|
||||||
|
|
||||||
|
NOTE: If you want the potential energy associated with the DFTB
|
||||||
|
forces to be included in the total potential energy of the system (the
|
||||||
|
quantity being minimized), you MUST enable the
|
||||||
|
"fix_modify"_fix_modify.html {energy} option for this fix.
|
||||||
|
|
||||||
|
[Restrictions:]
|
||||||
|
|
||||||
|
This fix is part of the LATTE package. It is only enabled if LAMMPS
|
||||||
|
was built with that package. See the "Making
|
||||||
|
LAMMPS"_Section_start.html#start_3 section for more info.
|
||||||
|
|
||||||
|
You must use metal units, as set by the "units"_units command to use
|
||||||
|
this fix.
|
||||||
|
|
||||||
|
LATTE does not currently compute per-atom energy or per-atom virial
|
||||||
|
contributions. So they will not show up as part of the calculations
|
||||||
|
performed by the "compute pe/atom"_compute_pe_atom.html or "compute
|
||||||
|
stress/atom"_compute_stress_atom.html commands.
|
||||||
|
|
||||||
|
Currently, LAMMPS must be run in serial or as a single MPI task, to
|
||||||
|
use this fix. This is typically not a bottleneck, since LATTE will be
|
||||||
|
doing 99% or more of the work to compute quantum-accurate forces.
|
||||||
|
|
||||||
|
NOTE: NEB calculations can be done using this fix using multiple
|
||||||
|
replicas and running LAMMPS in parallel. However, each replica must
|
||||||
|
be run on a single MPI task. For details, see the "neb"_neb.html
|
||||||
|
command and -partition command-line explained in "Section
|
||||||
|
2.6"_Section_start.html#start_6 of the manual.
|
||||||
|
|
||||||
|
[Related commands:] none
|
||||||
|
|
||||||
|
[Default:] none
|
||||||
|
|
||||||
|
:line
|
||||||
|
|
||||||
|
:link(Elstner)
|
||||||
|
[(Elstner)] M. Elstner, D. Poresag, G. Jungnickel, J. Elsner,
|
||||||
|
M. Haugk, T. Frauenheim, S. Suhai, and G. Seifert, Phys. Rev. B, 58,
|
||||||
|
7260 (1998).
|
||||||
|
|
||||||
|
:link(Elstner1)
|
||||||
|
[(Elstner)] M. Elstner, D. Poresag, G. Jungnickel, J. Elsner,
|
||||||
|
M. Haugk, T. Frauenheim, S. Suhai, and G. Seifert, Phys. Rev. B, 58,
|
||||||
|
7260 (1998).
|
||||||
|
|
||||||
|
:link(Finnis2)
|
||||||
|
[(Finnis)] M. W. Finnis, A. T. Paxton, M. Methfessel, and M. van
|
||||||
|
Schilfgarde, Phys. Rev. Lett., 81, 5149 (1998).
|
||||||
|
|
||||||
|
:link(Mniszewski)
|
||||||
|
[(Mniszewski)] S. M. Mniszewski, M. J. Cawkwell, M. E. Wall,
|
||||||
|
J. Mohd-Yusof, N. Bock, T. C. Germann, and A. M. N. Niklasson,
|
||||||
|
J. Chem. Theory Comput., 11, 4644 (2015).
|
||||||
|
|
||||||
|
:link(Niklasson2002)
|
||||||
|
[(Niklasson2002)] A. M. N. Niklasson, Phys. Rev. B, 66, 155115 (2002).
|
||||||
|
|
||||||
|
:link(Rubensson)
|
||||||
|
[(Rubensson)] E. H. Rubensson, A. M. N. Niklasson, SIAM
|
||||||
|
J. Sci. Comput. 36 (2), 147-170, (2014).
|
||||||
|
|
||||||
|
:link(Niklasson2008)
|
||||||
|
[(Niklasson2008)] A. M. N. Niklasson, Phys. Rev. Lett., 100, 123004
|
||||||
|
(2008).
|
||||||
|
|
||||||
|
:link(Niklasson2014)
|
||||||
|
[(Niklasson2014)] A. M. N. Niklasson and M. Cawkwell, J. Chem. Phys.,
|
||||||
|
141, 164123, (2014).
|
||||||
|
|
||||||
|
:link(Niklasson2017)
|
||||||
|
[(Niklasson2017)] A. M. N. Niklasson, J. Chem. Phys., 147, 054103 (2017).
|
||||||
|
|
||||||
|
:link(Cawkwell2012)
|
||||||
|
[(Cawkwell2012)] A. M. N. Niklasson, M. J. Cawkwell, Phys. Rev. B, 86
|
||||||
|
(17), 174308 (2012).
|
||||||
|
|
||||||
|
:link(Negre2016)
|
||||||
|
[(Negre2016)] C. F. A. Negre, S. M. Mniszewski, M. J. Cawkwell,
|
||||||
|
N. Bock, M. E. Wall, and A. M. N. Niklasson, J. Chem. Theory Comp.,
|
||||||
|
12, 3063 (2016).
|
||||||
@ -14,10 +14,11 @@ fix_modify fix-ID keyword value ... :pre
|
|||||||
|
|
||||||
fix-ID = ID of the fix to modify :ulb,l
|
fix-ID = ID of the fix to modify :ulb,l
|
||||||
one or more keyword/value pairs may be appended :l
|
one or more keyword/value pairs may be appended :l
|
||||||
keyword = {temp} or {press} or {energy} or {respa} or {dynamic/dof} :l
|
keyword = {temp} or {press} or {energy} or {virial} or {respa} or {dynamic/dof} :l
|
||||||
{temp} value = compute ID that calculates a temperature
|
{temp} value = compute ID that calculates a temperature
|
||||||
{press} value = compute ID that calculates a pressure
|
{press} value = compute ID that calculates a pressure
|
||||||
{energy} value = {yes} or {no}
|
{energy} value = {yes} or {no}
|
||||||
|
{virial} value = {yes} or {no}
|
||||||
{respa} value = {1} to {max respa level} or {0} (for outermost level)
|
{respa} value = {1} to {max respa level} or {0} (for outermost level)
|
||||||
{dynamic/dof} value = {yes} or {no}
|
{dynamic/dof} value = {yes} or {no}
|
||||||
yes/no = do or do not recompute the number of degrees of freedom (DOF) contributing to the temperature :pre
|
yes/no = do or do not recompute the number of degrees of freedom (DOF) contributing to the temperature :pre
|
||||||
@ -52,11 +53,10 @@ define their own compute by default, as described in their
|
|||||||
documentation. Thus this option allows the user to override the
|
documentation. Thus this option allows the user to override the
|
||||||
default method for computing P.
|
default method for computing P.
|
||||||
|
|
||||||
For fixes that calculate a contribution to the potential energy of the
|
The {energy} keyword can be used with fixes that support it.
|
||||||
system, the {energy} keyword will include that contribution in
|
{energy yes} adds a contribution to the potential energy of the
|
||||||
thermodynamic output of potential energy. This is because the {energy
|
system. The fix's global and per-atom
|
||||||
yes} setting must be specified to include the fix's global or per-atom
|
energy is included in the calculation performed by the "compute
|
||||||
energy in the calculation performed by the "compute
|
|
||||||
pe"_compute_pe.html or "compute pe/atom"_compute_pe_atom.html
|
pe"_compute_pe.html or "compute pe/atom"_compute_pe_atom.html
|
||||||
commands. See the "thermo_style"_thermo_style.html command for info
|
commands. See the "thermo_style"_thermo_style.html command for info
|
||||||
on how potential energy is output. For fixes that tally a global
|
on how potential energy is output. For fixes that tally a global
|
||||||
@ -69,6 +69,25 @@ are using it when performing an "energy minimization"_minimize.html
|
|||||||
and if you want the energy and forces it produces to be part of the
|
and if you want the energy and forces it produces to be part of the
|
||||||
optimization criteria.
|
optimization criteria.
|
||||||
|
|
||||||
|
The {virial} keyword can be used with fixes that support it.
|
||||||
|
{virial yes} adds a contribution to the virial of the
|
||||||
|
system. The fix's global and per-atom
|
||||||
|
virial is included in the calculation performed by the "compute
|
||||||
|
pressure"_compute_pressure.html or
|
||||||
|
"compute stress/atom"_compute_stress_atom.html
|
||||||
|
commands. See the "thermo_style"_thermo_style.html command for info
|
||||||
|
on how pressure is output.
|
||||||
|
|
||||||
|
NOTE: You must specify the {virial yes} setting for a fix if you
|
||||||
|
are doing "box relaxation"_fix_box_relax.html and
|
||||||
|
if you want virial contribution of the fix to be part of the
|
||||||
|
relaxation criteria, although this seems unlikely.
|
||||||
|
|
||||||
|
NOTE: This option is only supported by fixes that explicitly say
|
||||||
|
so. For some of these (e.g. the
|
||||||
|
"fix shake"_fix_shake.html command) the default setting is
|
||||||
|
{virial yes}, for others it is {virial no}.
|
||||||
|
|
||||||
For fixes that set or modify forces, it may be possible to select at
|
For fixes that set or modify forces, it may be possible to select at
|
||||||
which "r-RESPA"_run_style.html level the fix operates via the {respa}
|
which "r-RESPA"_run_style.html level the fix operates via the {respa}
|
||||||
keyword. The RESPA level at which the fix is active can be selected.
|
keyword. The RESPA level at which the fix is active can be selected.
|
||||||
@ -111,4 +130,4 @@ pressure"_compute_pressure.html, "thermo_style"_thermo_style.html
|
|||||||
[Default:]
|
[Default:]
|
||||||
|
|
||||||
The option defaults are temp = ID defined by fix, press = ID defined
|
The option defaults are temp = ID defined by fix, press = ID defined
|
||||||
by fix, energy = no, respa = 0.
|
by fix, energy = no, virial = different for each fix style, respa = 0.
|
||||||
|
|||||||
@ -44,7 +44,7 @@ the velocity for the force evaluation:
|
|||||||
|
|
||||||
where the parameter <font size="4">λ</font> depends on the
|
where the parameter <font size="4">λ</font> depends on the
|
||||||
specific choice of DPD parameters, and needs to be tuned on a
|
specific choice of DPD parameters, and needs to be tuned on a
|
||||||
case-by-case basis. Specification of a {lambda} value is opttional.
|
case-by-case basis. Specification of a {lambda} value is optional.
|
||||||
If specified, the setting must be from 0.0 to 1.0. If not specified,
|
If specified, the setting must be from 0.0 to 1.0. If not specified,
|
||||||
a default value of 0.5 is used, which effectively reproduces the
|
a default value of 0.5 is used, which effectively reproduces the
|
||||||
standard velocity-Verlet (VV) scheme. For more details, see
|
standard velocity-Verlet (VV) scheme. For more details, see
|
||||||
|
|||||||
@ -93,7 +93,7 @@ intermediate replica with the previous and the next image:
|
|||||||
|
|
||||||
Fnudge_parallel = {Kspring} * (|Ri+1 - Ri| - |Ri - Ri-1|) :pre
|
Fnudge_parallel = {Kspring} * (|Ri+1 - Ri| - |Ri - Ri-1|) :pre
|
||||||
|
|
||||||
Note that in this case the specified {Kspring) is in force/distance
|
Note that in this case the specified {Kspring} is in force/distance
|
||||||
units.
|
units.
|
||||||
|
|
||||||
With a value of {ideal}, the spring force is computed as suggested in
|
With a value of {ideal}, the spring force is computed as suggested in
|
||||||
@ -105,7 +105,7 @@ where RD is the "reaction coordinate" see "neb"_neb.html section, and
|
|||||||
RDideal is the ideal RD for which all the images are equally spaced.
|
RDideal is the ideal RD for which all the images are equally spaced.
|
||||||
I.e. RDideal = (I-1)*meanDist when the climbing replica is off, where
|
I.e. RDideal = (I-1)*meanDist when the climbing replica is off, where
|
||||||
I is the replica number). The meanDist is the average distance
|
I is the replica number). The meanDist is the average distance
|
||||||
between replicas. Note that in this case the specified {Kspring) is
|
between replicas. Note that in this case the specified {Kspring} is
|
||||||
in force units.
|
in force units.
|
||||||
|
|
||||||
Note that the {ideal} form of nudging can often be more effective at
|
Note that the {ideal} form of nudging can often be more effective at
|
||||||
@ -113,9 +113,9 @@ keeping the replicas equally spaced.
|
|||||||
|
|
||||||
:line
|
:line
|
||||||
|
|
||||||
The keyword {perp} specifies if and how a perpendicual nudging force
|
The keyword {perp} specifies if and how a perpendicular nudging force
|
||||||
is computed. It adds a spring force perpendicular to the path in
|
is computed. It adds a spring force perpendicular to the path in
|
||||||
order to prevent the path from becoming too kinky. It can
|
order to prevent the path from becoming too strongly kinked. It can
|
||||||
significantly improve the convergence of the NEB calculation when the
|
significantly improve the convergence of the NEB calculation when the
|
||||||
resolution is poor. I.e. when few replicas are used; see
|
resolution is poor. I.e. when few replicas are used; see
|
||||||
"(Maras)"_#Maras1 for details.
|
"(Maras)"_#Maras1 for details.
|
||||||
@ -138,17 +138,17 @@ By default, no additional forces act on the first and last replicas
|
|||||||
during the NEB relaxation, so these replicas simply relax toward their
|
during the NEB relaxation, so these replicas simply relax toward their
|
||||||
respective local minima. By using the key word {end}, additional
|
respective local minima. By using the key word {end}, additional
|
||||||
forces can be applied to the first and/or last replicas, to enable
|
forces can be applied to the first and/or last replicas, to enable
|
||||||
them to relax toward a MEP while constraining their energy.
|
them to relax toward a MEP while constraining their energy E to the
|
||||||
|
target energy ETarget.
|
||||||
|
|
||||||
The interatomic force Fi for the specified replica becomes:
|
If ETarget>E, the interatomic force Fi for the specified replica becomes:
|
||||||
|
|
||||||
Fi = -Grad(V) + (Grad(V) dot T' + (E-ETarget)*Kspring3) T', {when} Grad(V) dot T' < 0
|
Fi = -Grad(V) + (Grad(V) dot T' + (E-ETarget)*Kspring3) T', {when} Grad(V) dot T' < 0
|
||||||
Fi = -Grad(V) + (Grad(V) dot T' + (ETarget- E)*Kspring3) T', {when} Grad(V) dot T' > 0
|
Fi = -Grad(V) + (Grad(V) dot T' + (ETarget- E)*Kspring3) T', {when} Grad(V) dot T' > 0
|
||||||
:pre
|
:pre
|
||||||
|
|
||||||
where E is the current energy of the replica and ETarget is the target
|
The "spring" constant on the difference in energies is the specified
|
||||||
energy. The "spring" constant on the difference in energies is the
|
{Kspring3} value.
|
||||||
specified {Kspring3} value.
|
|
||||||
|
|
||||||
When {estyle} is specified as {first}, the force is applied to the
|
When {estyle} is specified as {first}, the force is applied to the
|
||||||
first replica. When {estyle} is specified as {last}, the force is
|
first replica. When {estyle} is specified as {last}, the force is
|
||||||
@ -183,10 +183,9 @@ After converging a NEB calculation using an {estyle} of
|
|||||||
have a larger energy than the first replica. If this is not the case,
|
have a larger energy than the first replica. If this is not the case,
|
||||||
the path is probably not a MEP.
|
the path is probably not a MEP.
|
||||||
|
|
||||||
Finally, note that if the last replica converges toward a local
|
Finally, note that the last replica may never reach the target energy
|
||||||
minimum which has a larger energy than the energy of the first
|
if it is stuck in a local minima which has a larger energy than the
|
||||||
replica, a NEB calculation using an {estyle} of {last/efirst} or
|
target energy.
|
||||||
{last/efirst/middle} cannot reach final convergence.
|
|
||||||
|
|
||||||
[Restart, fix_modify, output, run start/stop, minimize info:]
|
[Restart, fix_modify, output, run start/stop, minimize info:]
|
||||||
|
|
||||||
|
|||||||
@ -393,32 +393,36 @@ thermostatting and barostatting.
|
|||||||
:line
|
:line
|
||||||
|
|
||||||
These fixes compute a temperature and pressure each timestep. To do
|
These fixes compute a temperature and pressure each timestep. To do
|
||||||
this, the fix creates its own computes of style "temp" and "pressure",
|
this, the thermostat and barostat fixes create their own computes of
|
||||||
as if one of these two sets of commands had been issued:
|
style "temp" and "pressure", as if one of these sets of commands had
|
||||||
|
been issued:
|
||||||
|
|
||||||
|
For fix nvt:
|
||||||
compute fix-ID_temp group-ID temp
|
compute fix-ID_temp group-ID temp
|
||||||
compute fix-ID_press group-ID pressure fix-ID_temp :pre
|
|
||||||
|
|
||||||
|
For fix npt and fix nph:
|
||||||
compute fix-ID_temp all temp
|
compute fix-ID_temp all temp
|
||||||
compute fix-ID_press all pressure fix-ID_temp :pre
|
compute fix-ID_press all pressure fix-ID_temp :pre
|
||||||
|
|
||||||
See the "compute temp"_compute_temp.html and "compute
|
For fix nvt, the group for the new temperature compute is the same as
|
||||||
pressure"_compute_pressure.html commands for details. Note that the
|
the fix group. For fix npt and fix nph, the group for both the new
|
||||||
IDs of the new computes are the fix-ID + underscore + "temp" or fix_ID
|
temperature and pressure compute is "all" since pressure is computed
|
||||||
+ underscore + "press". For fix nvt, the group for the new computes
|
for the entire system. In the case of fix nph, the temperature
|
||||||
is the same as the fix group. For fix nph and fix npt, the group for
|
compute is not used for thermostatting, but just for a kinetic-energy
|
||||||
the new computes is "all" since pressure is computed for the entire
|
contribution to the pressure. See the "compute
|
||||||
system.
|
temp"_compute_temp.html and "compute pressure"_compute_pressure.html
|
||||||
|
commands for details. Note that the IDs of the new computes are the
|
||||||
|
fix-ID + underscore + "temp" or fix_ID + underscore + "press".
|
||||||
|
|
||||||
Note that these are NOT the computes used by thermodynamic output (see
|
Note that these are NOT the computes used by thermodynamic output (see
|
||||||
the "thermo_style"_thermo_style.html command) with ID = {thermo_temp}
|
the "thermo_style"_thermo_style.html command) with ID = {thermo_temp}
|
||||||
and {thermo_press}. This means you can change the attributes of this
|
and {thermo_press}. This means you can change the attributes of these
|
||||||
fix's temperature or pressure via the
|
fix's temperature or pressure via the
|
||||||
"compute_modify"_compute_modify.html command or print this temperature
|
"compute_modify"_compute_modify.html command. Or you can print this
|
||||||
or pressure during thermodynamic output via the "thermo_style
|
temperature or pressure during thermodynamic output via the
|
||||||
custom"_thermo_style.html command using the appropriate compute-ID.
|
"thermo_style custom"_thermo_style.html command using the appropriate
|
||||||
It also means that changing attributes of {thermo_temp} or
|
compute-ID. It also means that changing attributes of {thermo_temp}
|
||||||
{thermo_press} will have no effect on this fix.
|
or {thermo_press} will have no effect on this fix.
|
||||||
|
|
||||||
Like other fixes that perform thermostatting, fix nvt and fix npt can
|
Like other fixes that perform thermostatting, fix nvt and fix npt can
|
||||||
be used with "compute commands"_compute.html that calculate a
|
be used with "compute commands"_compute.html that calculate a
|
||||||
|
|||||||
228
doc/src/fix_nh_uef.txt
Normal file
@ -0,0 +1,228 @@
|
|||||||
|
<"LAMMPS WWW Site"_lws - "LAMMPS Documentation"_ld - "LAMMPS Commands"_lc :c
|
||||||
|
|
||||||
|
:link(lws,http://lammps.sandia.gov)
|
||||||
|
:link(ld,Manual.html)
|
||||||
|
:link(lc,Section_commands.html#comm)
|
||||||
|
|
||||||
|
:line
|
||||||
|
|
||||||
|
fix nvt/uef command :h3
|
||||||
|
fix npt/uef command :h3
|
||||||
|
|
||||||
|
[Syntax:]
|
||||||
|
|
||||||
|
fix ID group-ID style_name erate edot_x edot_y temp Tstart Tstop Tdamp keyword value ... :pre
|
||||||
|
|
||||||
|
ID, group-ID are documented in "fix"_fix.html command :ulb,l
|
||||||
|
style_name = {nvt/uef} or {npt/uef} :l
|
||||||
|
{Tstart}, {Tstop}, and {Tdamp} are documented in the "fix npt"_fix_nh.html command :l
|
||||||
|
{edot_x} and {edot_y} are the strain rates in the x and y directions (1/(time units)) :l
|
||||||
|
one or more keyword/value pairs may be appended :l
|
||||||
|
keyword = {ext} or {strain} or {iso} or {x} or {y} or {z} or {tchain} or {pchain} or {tloop} or {ploop} or {mtk}
|
||||||
|
{ext} value = {x} or {y} or {z} or {xy} or {yz} or {xz} = external dimensions
|
||||||
|
sets the external dimensions used to calculate the scalar pressure
|
||||||
|
{strain} values = e_x e_y = initial strain
|
||||||
|
usually not needed, but may be needed to resume a run with a data file.
|
||||||
|
{iso}, {x}, {y}, {z}, {tchain}, {pchain}, {tloop}, {ploop}, {mtk} keywords
|
||||||
|
documented by the "fix npt"_fix_nh.html command :pre
|
||||||
|
:ule
|
||||||
|
|
||||||
|
[Examples:]
|
||||||
|
|
||||||
|
fix uniax_nvt all nvt/uef temp 400 400 100 erate 0.00001 -0.000005
|
||||||
|
fix biax_nvt all nvt/uef temp 400 400 100 erate 0.000005 0.000005
|
||||||
|
fix uniax_npt all npt/uef temp 400 400 300 iso 1 1 3000 erate 0.00001 -0.000005 ext yz
|
||||||
|
fix biax_npt all npt/uef temp 400 400 100 erate -0.00001 0.000005 x 1 1 3000 :pre
|
||||||
|
|
||||||
|
[Description:]
|
||||||
|
|
||||||
|
This fix can be used to simulate non-equilibrium molecular dynamics
|
||||||
|
(NEMD) under diagonal flow fields, including uniaxial and biaxial
|
||||||
|
flow. Simulations under continuous extensional flow may be carried
|
||||||
|
out for an indefinite amount of time. It is an implementation of the
|
||||||
|
boundary conditions from "(Dobson)"_#Dobson, and also uses numerical
|
||||||
|
lattice reduction as was proposed by "(Hunt)"_#Hunt. The lattice
|
||||||
|
reduction algorithm is from "(Semaev)"_Semaev. The fix is intended for
|
||||||
|
simulations of homogeneous flows, and integrates the SLLOD equations
|
||||||
|
of motion, originally proposed by Hoover and Ladd (see "(Evans and
|
||||||
|
Morriss)"_#Sllod). Additional detail about this implementation can be
|
||||||
|
found in "(Nicholson and Rutledge)"_#Nicholson.
|
||||||
|
|
||||||
|
Note that NEMD simulations of a continuously strained system can be
|
||||||
|
performed using the "fix deform"_fix_deform.html, "fix
|
||||||
|
nvt/sllod"_fix_nvt_sllod.html, and "compute
|
||||||
|
temp/deform"_compute_temp_deform.html commands.
|
||||||
|
|
||||||
|
The applied flow field is set by the {eps} keyword. The values
|
||||||
|
{edot_x} and {edot_y} correspond to the strain rates in the xx and yy
|
||||||
|
directions. It is implicitly assumed that the flow field is
|
||||||
|
traceless, and therefore the strain rate in the zz direction is eqal
|
||||||
|
to -({edot_x} + {edot_y}).
|
||||||
|
|
||||||
|
NOTE: Due to an instability in the SLLOD equations under extension,
|
||||||
|
"fix momentum"_fix_momentum.html should be used to regularly reset the
|
||||||
|
linear momentum.
|
||||||
|
|
||||||
|
The boundary conditions require a simulation box that does not have a
|
||||||
|
consistent alignment relative to the applied flow field. Since LAMMPS
|
||||||
|
utilizes an upper-triangular simulation box, it is not possible to
|
||||||
|
express the evolving simulation box in the same coordinate system as
|
||||||
|
the flow field. This fix keeps track of two coordinate systems: the
|
||||||
|
flow frame, and the upper triangular LAMMPS frame. The coordinate
|
||||||
|
systems are related to each other through the QR decomposition, as is
|
||||||
|
illustrated in the image below.
|
||||||
|
|
||||||
|
:c,image(JPG/uef_frames.jpg)
|
||||||
|
|
||||||
|
During most molecular dynamics operations, the system is represented
|
||||||
|
in the LAMMPS frame. Only when the positions and velocities are
|
||||||
|
updated is the system rotated to the flow frame, and it is rotated
|
||||||
|
back to the LAMMPS frame immediately afterwards. For this reason, all
|
||||||
|
vector-valued quantities (except for the tensors from
|
||||||
|
"compute_pressure/uef"_compute_pressure_uef.html and
|
||||||
|
"compute_temp/uef"_compute_temp_uef.html) will be computed in the
|
||||||
|
LAMMPS frame. Rotationally invariant scalar quantities like the
|
||||||
|
temperature and hydrostatic pressure are frame-invariant and will be
|
||||||
|
computed correctly. Additionally, the system is in the LAMMPS frame
|
||||||
|
during all of the output steps, and therefore trajectory files made
|
||||||
|
using the dump command will be in the LAMMPS frame unless the
|
||||||
|
"dump_cfg/uef"_dump_cfg_uef.html command is used.
|
||||||
|
|
||||||
|
:line
|
||||||
|
|
||||||
|
Temperature control is achieved with the default Nose-Hoover style
|
||||||
|
thermostat documented in "fix npt"_fix_nh.html. When this fix is
|
||||||
|
active, only the peculiar velocity of each atom is stored, defined as
|
||||||
|
the velocity relative to the streaming velocity. This is in contrast
|
||||||
|
to "fix nvt/sllod"_fix_nvt_sllod.html, which uses a lab-frame
|
||||||
|
velocity, and removes the contribution from the streaming velocity in
|
||||||
|
order to compute the temperature.
|
||||||
|
|
||||||
|
Pressure control is achieved using the default Nose-Hoover barostat
|
||||||
|
documented in "fix npt"_fix_nh.html. There are two ways to control the
|
||||||
|
pressure using this fix. The first method involves using the {ext}
|
||||||
|
keyword along with the {iso} pressure style. With this method, the
|
||||||
|
pressure is controlled by scaling the simulation box isotropically to
|
||||||
|
achieve the average pressure only in the directions specified by
|
||||||
|
{ext}. For example, if the {ext} value is set to {xy}, the average
|
||||||
|
pressure (Pxx+Pyy)/2 will be controlled.
|
||||||
|
|
||||||
|
This example command will control the total hydrostatic pressure under
|
||||||
|
uniaxial tension:
|
||||||
|
|
||||||
|
fix f1 all npt/uef temp 0.7 0.7 0.5 iso 1 1 5 erate -0.5 -0.5 ext xyz :pre
|
||||||
|
|
||||||
|
This example command will control the average stress in compression
|
||||||
|
directions, which would typically correspond to free surfaces under
|
||||||
|
drawing with uniaxial tension:
|
||||||
|
|
||||||
|
fix f2 all npt/uef temp 0.7 0.7 0.5 iso 1 1 5 erate -0.5 -0.5 ext xy :pre
|
||||||
|
|
||||||
|
The second method for pressure control involves setting the normal
|
||||||
|
stresses using the {x}, {y} , and/or {z} keywords. When using this
|
||||||
|
method, the same pressure must be specified via {Pstart} and {Pstop}
|
||||||
|
for all dimensions controlled. Any choice of pressure conditions that
|
||||||
|
would cause LAMMPS to compute a deviatoric stress are not permissible
|
||||||
|
and will result in an error. Additionally, all dimensions with
|
||||||
|
controlled stress must have the same applied strain rate. The {ext}
|
||||||
|
keyword must be set to the default value ({xyz}) when using this
|
||||||
|
method.
|
||||||
|
|
||||||
|
For example, the following commands will work:
|
||||||
|
|
||||||
|
fix f3 all npt/uef temp 0.7 0.7 0.5 x 1 1 5 y 1 1 5 erate -0.5 -0.5
|
||||||
|
fix f4 all npt/uef temp 0.7 0.7 0.5 z 1 1 5 erate 0.5 0.5 :pre
|
||||||
|
|
||||||
|
The following commands will not work:
|
||||||
|
|
||||||
|
fix f5 all npt/uef temp 0.7 0.7 0.5 x 1 1 5 z 1 1 5 erate -0.5 -0.5
|
||||||
|
fix f6 all npt/uef temp 0.7 0.7 0.5 x 1 1 5 z 2 2 5 erate 0.5 0.5 :pre
|
||||||
|
|
||||||
|
:line
|
||||||
|
|
||||||
|
These fix computes a temperature and pressure each timestep. To do
|
||||||
|
this, it creates its own computes of style "temp/uef" and
|
||||||
|
"pressure/uef", as if one of these two sets of commands had been
|
||||||
|
issued:
|
||||||
|
|
||||||
|
compute fix-ID_temp group-ID temp/uef
|
||||||
|
compute fix-ID_press group-ID pressure/uef fix-ID_temp :pre
|
||||||
|
|
||||||
|
compute fix-ID_temp all temp/uef
|
||||||
|
compute fix-ID_press all pressure/uef fix-ID_temp :pre
|
||||||
|
|
||||||
|
See the "compute temp/uef"_compute_temp_uef.html and "compute
|
||||||
|
pressure/uef"_compute_pressure_uef.html commands for details. Note
|
||||||
|
that the IDs of the new computes are the fix-ID + underscore + "temp"
|
||||||
|
or fix_ID + underscore + "press".
|
||||||
|
|
||||||
|
[Restart, fix_modify, output, run start/stop, minimize info:]
|
||||||
|
|
||||||
|
The fix writes the state of all the thermostat and barostat variables,
|
||||||
|
as well as the cumulative strain applied, to "binary restart
|
||||||
|
files"_restart.html. See the "read_restart"_read_restart.html command
|
||||||
|
for info on how to re-specify a fix in an input script that reads a
|
||||||
|
restart file, so that the operation of the fix continues in an
|
||||||
|
uninterrupted fashion.
|
||||||
|
|
||||||
|
NOTE: It is not necessary to set the {strain} keyword when resuming a
|
||||||
|
run from a restart file. Only for resuming from data files, which do
|
||||||
|
not contain the cumulative applied strain, will this keyword be
|
||||||
|
necessary.
|
||||||
|
|
||||||
|
This fix can be used with the "fix_modify"_fix_modify.html {temp} and
|
||||||
|
{press} options. The temperature and pressure computes used must be of
|
||||||
|
type {temp/uef} and {pressure/uef}.
|
||||||
|
|
||||||
|
This fix computes the same global scalar and vecor quantities as "fix
|
||||||
|
npt"_fix_nh.html.
|
||||||
|
|
||||||
|
The fix is not invoked during "energy minimization"_minimize.html.
|
||||||
|
|
||||||
|
[Restrictions:]
|
||||||
|
|
||||||
|
This fix is part of the USER-UEF package. It is only enabled if LAMMPS
|
||||||
|
was built with that package. See the "Making
|
||||||
|
LAMMPS"_Section_start.html#start_3 section for more info.
|
||||||
|
|
||||||
|
Due to requirements of the boundary conditions, when the {strain}
|
||||||
|
keyword is set to zero (or unset), the initial simulation box must be
|
||||||
|
cubic and have style triclinic. If the box is initially of type ortho,
|
||||||
|
use "change_box"_change_box.html before invoking the fix.
|
||||||
|
|
||||||
|
NOTE: When resuming from restart files, you may need to use "box tilt
|
||||||
|
large"_box.html since lammps has internal criteria from lattice
|
||||||
|
reduction that are not the same as the criteria in the numerical
|
||||||
|
lattice reduction algorithm.
|
||||||
|
|
||||||
|
[Related commands:]
|
||||||
|
|
||||||
|
"fix nvt"_fix_nh.html, "fix nvt/sllod"_fix_nvt_sllod.html, "compute
|
||||||
|
temp/uef"_compute_temp_uef.html, "compute
|
||||||
|
pressure/uef"_compute_pressure_uef.html, "dump
|
||||||
|
cfg/uef"_dump_cfg_uef.html
|
||||||
|
|
||||||
|
[Default:]
|
||||||
|
|
||||||
|
The default keyword values specific to this fix are exy = xyz, strain
|
||||||
|
= 0 0. The remaining defaults are the same as for {fix
|
||||||
|
npt}_fix_nh.html except tchain = 1. The reason for this change is
|
||||||
|
given in "fix nvt/sllod"_fix_nvt_sllod.html.
|
||||||
|
|
||||||
|
:line
|
||||||
|
|
||||||
|
:link(Dobson)
|
||||||
|
[(Dobson)] Dobson, J Chem Phys, 141, 184103 (2014).
|
||||||
|
|
||||||
|
:link(Hunt)
|
||||||
|
[(Hunt)] Hunt, Mol Simul, 42, 347 (2016).
|
||||||
|
|
||||||
|
:link(Semaev)
|
||||||
|
[(Semaev)] Semaev, Cryptography and Lattices, 181 (2001).
|
||||||
|
|
||||||
|
:link(Sllod)
|
||||||
|
[(Evans and Morriss)] Evans and Morriss, Phys Rev A, 30, 1528 (1984).
|
||||||
|
|
||||||
|
:link(Nicholson)
|
||||||
|
[(Nicholson and Rutledge)] Nicholson and Rutledge, J Chem Phys, 145,
|
||||||
|
244903 (2016).
|
||||||
@ -44,7 +44,7 @@ A technical report with more information on this integrator can be found
|
|||||||
[Restrictions:]
|
[Restrictions:]
|
||||||
|
|
||||||
These pair styles can only be used if LAMMPS was built with the
|
These pair styles can only be used if LAMMPS was built with the
|
||||||
USER-CGDNA package and the MOLECULE and ASPHERE package. See the "Making
|
"USER-CGDNA"_#USER-CGDNA package and the MOLECULE and ASPHERE package. See the "Making
|
||||||
LAMMPS"_Section_start.html#start_3 section for more info on packages.
|
LAMMPS"_Section_start.html#start_3 section for more info on packages.
|
||||||
|
|
||||||
[Related commands:]
|
[Related commands:]
|
||||||
|
|||||||
@ -24,7 +24,8 @@ keyword = {angmom} :l
|
|||||||
|
|
||||||
[Examples:]
|
[Examples:]
|
||||||
|
|
||||||
fix 1 all nve/dotc/langevin 1.0 1.0 0.03 457145 angmom 10 :pre
|
fix 1 all nve/dotc/langevin 1.0 1.0 0.03 457145 angmom 10
|
||||||
|
fix 1 all nve/dotc/langevin 0.1 0.1 78.9375 457145 angmom 10 :pre
|
||||||
|
|
||||||
[Description:]
|
[Description:]
|
||||||
|
|
||||||
@ -78,7 +79,9 @@ a Gaussian random number) for speed.
|
|||||||
:line
|
:line
|
||||||
|
|
||||||
{Tstart} and {Tstop} have to be constant values, i.e. they cannot
|
{Tstart} and {Tstop} have to be constant values, i.e. they cannot
|
||||||
be variables.
|
be variables. If used together with the oxDNA force field for
|
||||||
|
coarse-grained simulation of DNA please note that T = 0.1 in oxDNA units
|
||||||
|
corresponds to T = 300 K.
|
||||||
|
|
||||||
The {damp} parameter is specified in time units and determines how
|
The {damp} parameter is specified in time units and determines how
|
||||||
rapidly the temperature is relaxed. For example, a value of 0.03
|
rapidly the temperature is relaxed. For example, a value of 0.03
|
||||||
@ -89,6 +92,10 @@ viscosity of the solvent, i.e. a small relaxation time implies a
|
|||||||
hi-viscosity solvent and vice versa. See the discussion about gamma
|
hi-viscosity solvent and vice versa. See the discussion about gamma
|
||||||
and viscosity in the documentation for the "fix
|
and viscosity in the documentation for the "fix
|
||||||
viscous"_fix_viscous.html command for more details.
|
viscous"_fix_viscous.html command for more details.
|
||||||
|
Note that the value 78.9375 in the second example above corresponds
|
||||||
|
to a diffusion constant, which is about an order of magnitude larger
|
||||||
|
than realistic ones. This has been used to sample configurations faster
|
||||||
|
in Brownian dynamics simulations.
|
||||||
|
|
||||||
The random # {seed} must be a positive integer. A Marsaglia random
|
The random # {seed} must be a positive integer. A Marsaglia random
|
||||||
number generator is used. Each processor uses the input seed to
|
number generator is used. Each processor uses the input seed to
|
||||||
@ -115,12 +122,12 @@ A technical report with more information on this integrator can be found
|
|||||||
[Restrictions:]
|
[Restrictions:]
|
||||||
|
|
||||||
These pair styles can only be used if LAMMPS was built with the
|
These pair styles can only be used if LAMMPS was built with the
|
||||||
USER-CGDNA package and the MOLECULE and ASPHERE package. See the "Making
|
"USER-CGDNA"_#USER-CGDNA package and the MOLECULE and ASPHERE package. See the "Making
|
||||||
LAMMPS"_Section_start.html#start_3 section for more info on packages.
|
LAMMPS"_Section_start.html#start_3 section for more info on packages.
|
||||||
|
|
||||||
[Related commands:]
|
[Related commands:]
|
||||||
|
|
||||||
"fix nve"_fix_nve.html, "fix langevin"_fix_langevin.html, "fix nve/dot"_fix_nve_dot.html,
|
"fix nve"_fix_nve.html, "fix langevin"_fix_langevin.html, "fix nve/dot"_fix_nve_dot.html, "bond_style oxdna/fene"_bond_oxdna.html, "bond_style oxdna2/fene"_bond_oxdna.html, "pair_style oxdna/excv"_pair_oxdna.html, "pair_style oxdna2/excv"_pair_oxdna2.html
|
||||||
|
|
||||||
[Default:] none
|
[Default:] none
|
||||||
|
|
||||||
|
|||||||
@ -111,6 +111,10 @@ need to communicate their new values to/from ghost atoms, an operation
|
|||||||
that can be invoked from within a "pair style"_pair_style.html or
|
that can be invoked from within a "pair style"_pair_style.html or
|
||||||
"fix"_fix.html or "compute"_compute.html that you write.
|
"fix"_fix.html or "compute"_compute.html that you write.
|
||||||
|
|
||||||
|
NOTE: If this fix is defined [after] the simulation box is created,
|
||||||
|
a 'run 0' command should be issued to properly initialize the storage
|
||||||
|
created by this fix.
|
||||||
|
|
||||||
:line
|
:line
|
||||||
|
|
||||||
This fix is one of a small number that can be defined in an input
|
This fix is one of a small number that can be defined in an input
|
||||||
@ -155,7 +159,7 @@ these commands could be used:
|
|||||||
|
|
||||||
fix prop all property/atom mol
|
fix prop all property/atom mol
|
||||||
variable cluster atom ((id-1)/10)+1
|
variable cluster atom ((id-1)/10)+1
|
||||||
set id * mol v_cluster :pre
|
set atom * mol v_cluster :pre
|
||||||
|
|
||||||
The "atom-style variable"_variable.html will create values for atoms
|
The "atom-style variable"_variable.html will create values for atoms
|
||||||
with IDs 31,32,33,...40 that are 4.0,4.1,4.2,...,4.9. When the
|
with IDs 31,32,33,...40 that are 4.0,4.1,4.2,...,4.9. When the
|
||||||
|
|||||||
@ -6,14 +6,14 @@
|
|||||||
|
|
||||||
:line
|
:line
|
||||||
|
|
||||||
fix python command :h3
|
fix python/invoke command :h3
|
||||||
|
|
||||||
[Syntax:]
|
[Syntax:]
|
||||||
|
|
||||||
fix ID group-ID python N callback function_name :pre
|
fix ID group-ID python/invoke N callback function_name :pre
|
||||||
|
|
||||||
ID, group-ID are ignored by this fix :ulb,l
|
ID, group-ID are ignored by this fix :ulb,l
|
||||||
python = style name of this fix command :l
|
python/invoke = style name of this fix command :l
|
||||||
N = execute every N steps :l
|
N = execute every N steps :l
|
||||||
callback = {post_force} or {end_of_step} :l
|
callback = {post_force} or {end_of_step} :l
|
||||||
{post_force} = callback after force computations on atoms every N time steps
|
{post_force} = callback after force computations on atoms every N time steps
|
||||||
@ -36,8 +36,8 @@ def end_of_step_callback(lammps_ptr):
|
|||||||
# access LAMMPS state using Python interface
|
# access LAMMPS state using Python interface
|
||||||
""" :pre
|
""" :pre
|
||||||
|
|
||||||
fix pf all python 50 post_force post_force_callback
|
fix pf all python/invoke 50 post_force post_force_callback
|
||||||
fix eos all python 50 end_of_step end_of_step_callback :pre
|
fix eos all python/invoke 50 end_of_step end_of_step_callback :pre
|
||||||
|
|
||||||
[Description:]
|
[Description:]
|
||||||
|
|
||||||
102
doc/src/fix_python_move.txt
Normal file
@ -0,0 +1,102 @@
|
|||||||
|
"LAMMPS WWW Site"_lws - "LAMMPS Documentation"_ld - "LAMMPS Commands"_lc :c
|
||||||
|
|
||||||
|
:link(lws,http://lammps.sandia.gov)
|
||||||
|
:link(ld,Manual.html)
|
||||||
|
:link(lc,Section_commands.html#comm)
|
||||||
|
|
||||||
|
:line
|
||||||
|
|
||||||
|
fix python/move command :h3
|
||||||
|
|
||||||
|
[Syntax:]
|
||||||
|
|
||||||
|
fix python/move pymodule.CLASS :pre
|
||||||
|
|
||||||
|
pymodule.CLASS = use class [CLASS] in module/file [pymodule] to compute how to move atoms
|
||||||
|
|
||||||
|
[Examples:]
|
||||||
|
|
||||||
|
fix 1 all python/move py_nve.NVE
|
||||||
|
fix 1 all python/move py_nve.NVE_OPT :pre
|
||||||
|
|
||||||
|
[Description:]
|
||||||
|
|
||||||
|
The {python/move} fix style provides a way to define ways how particles
|
||||||
|
are moved during an MD run from python script code, that is loaded from
|
||||||
|
a file into LAMMPS and executed at the various steps where other fixes
|
||||||
|
can be executed. This python script must contain specific python class
|
||||||
|
definitions.
|
||||||
|
|
||||||
|
This allows to implement complex position updates and also modified
|
||||||
|
time integration methods. Due to python being an interpreted language,
|
||||||
|
however, the performance of this fix can be moderately to significantly
|
||||||
|
slower than the corresponding C++ code. For specific cases, this
|
||||||
|
performance penalty can be limited through effective use of NumPy.
|
||||||
|
|
||||||
|
:line
|
||||||
|
|
||||||
|
The python module file has to start with the following code:
|
||||||
|
|
||||||
|
from __future__ import print_function
|
||||||
|
import lammps
|
||||||
|
import ctypes
|
||||||
|
import traceback
|
||||||
|
import numpy as np
|
||||||
|
#
|
||||||
|
class LAMMPSFix(object):
|
||||||
|
def __init__(self, ptr, group_name="all"):
|
||||||
|
self.lmp = lammps.lammps(ptr=ptr)
|
||||||
|
self.group_name = group_name
|
||||||
|
#
|
||||||
|
class LAMMPSFixMove(LAMMPSFix):
|
||||||
|
def __init__(self, ptr, group_name="all"):
|
||||||
|
super(LAMMPSFixMove, self).__init__(ptr, group_name)
|
||||||
|
#
|
||||||
|
def init(self):
|
||||||
|
pass
|
||||||
|
#
|
||||||
|
def initial_integrate(self, vflag):
|
||||||
|
pass
|
||||||
|
#
|
||||||
|
def final_integrate(self):
|
||||||
|
pass
|
||||||
|
#
|
||||||
|
def initial_integrate_respa(self, vflag, ilevel, iloop):
|
||||||
|
pass
|
||||||
|
#
|
||||||
|
def final_integrate_respa(self, ilevel, iloop):
|
||||||
|
pass
|
||||||
|
#
|
||||||
|
def reset_dt(self):
|
||||||
|
pass :pre
|
||||||
|
|
||||||
|
Any classes implementing new atom motion functionality have to be
|
||||||
|
derived from the [LAMMPSFixMove] class, overriding the available
|
||||||
|
methods as needed.
|
||||||
|
|
||||||
|
Examples for how to do this are in the {examples/python} folder.
|
||||||
|
|
||||||
|
:line
|
||||||
|
|
||||||
|
[Restart, fix_modify, output, run start/stop, minimize info:]
|
||||||
|
|
||||||
|
No information about this fix is written to "binary restart
|
||||||
|
files"_restart.html. None of the "fix_modify"_fix_modify.html options
|
||||||
|
are relevant to this fix. No global or per-atom quantities are stored
|
||||||
|
by this fix for access by various "output
|
||||||
|
commands"_Section_howto.html#howto_15. No parameter of this fix can
|
||||||
|
be used with the {start/stop} keywords of the "run"_run.html command.
|
||||||
|
This fix is not invoked during "energy minimization"_minimize.html.
|
||||||
|
|
||||||
|
[Restrictions:]
|
||||||
|
|
||||||
|
This pair style is part of the PYTHON package. It is only enabled if
|
||||||
|
LAMMPS was built with that package. See the "Making
|
||||||
|
LAMMPS"_Section_start.html#start_3 section for more info.
|
||||||
|
|
||||||
|
[Related commands:]
|
||||||
|
|
||||||
|
"fix nve"_fix_nve.html, "fix python/invoke"_fix_python_invoke.html
|
||||||
|
|
||||||
|
[Default:] none
|
||||||
|
|
||||||
56
doc/src/fix_rhok.txt
Normal file
@ -0,0 +1,56 @@
|
|||||||
|
"LAMMPS WWW Site"_lws - "LAMMPS Documentation"_ld - "LAMMPS Commands"_lc :c
|
||||||
|
|
||||||
|
:link(lws,http://lammps.sandia.gov)
|
||||||
|
:link(ld,Manual.html)
|
||||||
|
:link(lc,Section_commands.html#comm)
|
||||||
|
|
||||||
|
:line
|
||||||
|
|
||||||
|
fix rhok command :h3
|
||||||
|
|
||||||
|
fix ID group-ID rhok nx ny nz K a :pre
|
||||||
|
|
||||||
|
ID, group-ID are documented in "fix"_fix.html command
|
||||||
|
nx, ny, nz = k-vektor of collective density field
|
||||||
|
K = spring constant of bias potential
|
||||||
|
a = anchor point of bias potential :ul
|
||||||
|
|
||||||
|
[Examples:]
|
||||||
|
|
||||||
|
fix bias all rhok 16 0 0 4.0 16.0
|
||||||
|
fix 1 all npt temp 0.8 0.8 4.0 z 2.2 2.2 8.0
|
||||||
|
# output of 4 values from fix rhok: U_bias rho_k_RE rho_k_IM |rho_k|
|
||||||
|
thermo_style custom step temp pzz lz f_bias f_bias\[1\] f_bias\[2\] f_bias\[3\] :pre
|
||||||
|
|
||||||
|
[Description:]
|
||||||
|
|
||||||
|
The fix applies a force to atoms given by the potential
|
||||||
|
|
||||||
|
:c,image(Eqs/fix_rhok.jpg)
|
||||||
|
|
||||||
|
as described in "(Pedersen)"_#Pedersen.
|
||||||
|
|
||||||
|
This field, which biases configurations with long-range order, can be
|
||||||
|
used to study crystal-liquid interfaces and determine melting
|
||||||
|
temperatures "(Pedersen)"_#Pedersen.
|
||||||
|
|
||||||
|
An example of using the interface pinning method is located in the
|
||||||
|
{examples/USER/misc/rhok} directory.
|
||||||
|
|
||||||
|
[Restrictions:]
|
||||||
|
|
||||||
|
This fix is part of the MISC package. It is only enabled if LAMMPS
|
||||||
|
was built with that package. See the "Making
|
||||||
|
LAMMPS"_Section_start.html#start_3 section for more info.
|
||||||
|
|
||||||
|
[Related commands:]
|
||||||
|
|
||||||
|
"thermo_style"_thermo_style.html
|
||||||
|
|
||||||
|
[Default:] none
|
||||||
|
|
||||||
|
:line
|
||||||
|
|
||||||
|
:link(Pedersen)
|
||||||
|
[(Pedersen)] Pedersen, J. Chem. Phys., 139, 104102 (2013).
|
||||||
|
|
||||||
@ -7,11 +7,17 @@
|
|||||||
:line
|
:line
|
||||||
|
|
||||||
fix rigid command :h3
|
fix rigid command :h3
|
||||||
|
fix rigid/omp command :h3
|
||||||
fix rigid/nve command :h3
|
fix rigid/nve command :h3
|
||||||
|
fix rigid/nve/omp command :h3
|
||||||
fix rigid/nvt command :h3
|
fix rigid/nvt command :h3
|
||||||
|
fix rigid/nvt/omp command :h3
|
||||||
fix rigid/npt command :h3
|
fix rigid/npt command :h3
|
||||||
|
fix rigid/npt/omp command :h3
|
||||||
fix rigid/nph command :h3
|
fix rigid/nph command :h3
|
||||||
|
fix rigid/nph/omp command :h3
|
||||||
fix rigid/small command :h3
|
fix rigid/small command :h3
|
||||||
|
fix rigid/small/omp command :h3
|
||||||
fix rigid/nve/small command :h3
|
fix rigid/nve/small command :h3
|
||||||
fix rigid/nvt/small command :h3
|
fix rigid/nvt/small command :h3
|
||||||
fix rigid/npt/small command :h3
|
fix rigid/npt/small command :h3
|
||||||
@ -26,6 +32,9 @@ style = {rigid} or {rigid/nve} or {rigid/nvt} or {rigid/npt} or {rigid/nph} or {
|
|||||||
bodystyle = {single} or {molecule} or {group} :l
|
bodystyle = {single} or {molecule} or {group} :l
|
||||||
{single} args = none
|
{single} args = none
|
||||||
{molecule} args = none
|
{molecule} args = none
|
||||||
|
{custom} args = {i_propname} or {v_varname}
|
||||||
|
i_propname = an integer property defined via fix property/atom
|
||||||
|
v_varname = an atom-style or atomfile-style variable
|
||||||
{group} args = N groupID1 groupID2 ...
|
{group} args = N groupID1 groupID2 ...
|
||||||
N = # of groups
|
N = # of groups
|
||||||
groupID1, groupID2, ... = list of N group IDs :pre
|
groupID1, groupID2, ... = list of N group IDs :pre
|
||||||
@ -80,7 +89,17 @@ fix 1 rods rigid/npt molecule temp 300.0 300.0 100.0 iso 0.5 0.5 10.0
|
|||||||
fix 1 particles rigid/npt molecule temp 1.0 1.0 5.0 x 0.5 0.5 1.0 z 0.5 0.5 1.0 couple xz
|
fix 1 particles rigid/npt molecule temp 1.0 1.0 5.0 x 0.5 0.5 1.0 z 0.5 0.5 1.0 couple xz
|
||||||
fix 1 water rigid/nph molecule iso 0.5 0.5 1.0
|
fix 1 water rigid/nph molecule iso 0.5 0.5 1.0
|
||||||
fix 1 particles rigid/npt/small molecule temp 1.0 1.0 1.0 iso 0.5 0.5 1.0 :pre
|
fix 1 particles rigid/npt/small molecule temp 1.0 1.0 1.0 iso 0.5 0.5 1.0 :pre
|
||||||
|
|
||||||
|
variable bodyid atom 1.0*gmask(clump1)+2.0*gmask(clump2)+3.0*gmask(clump3)
|
||||||
|
fix 1 clump rigid custom v_bodyid :pre
|
||||||
|
|
||||||
|
variable bodyid atomfile bodies.txt
|
||||||
|
fix 1 clump rigid custom v_bodyid :pre
|
||||||
|
|
||||||
|
fix 0 all property/atom i_bodyid
|
||||||
|
read_restart data.rigid fix 0 NULL Bodies
|
||||||
|
fix 1 clump rigid/small custom i_bodyid :pre
|
||||||
|
|
||||||
[Description:]
|
[Description:]
|
||||||
|
|
||||||
Treat one or more sets of atoms as independent rigid bodies. This
|
Treat one or more sets of atoms as independent rigid bodies. This
|
||||||
@ -100,7 +119,7 @@ of a biomolecule such as a protein.
|
|||||||
|
|
||||||
Example of small rigid bodies are patchy nanoparticles, such as those
|
Example of small rigid bodies are patchy nanoparticles, such as those
|
||||||
modeled in "this paper"_#Zhang1 by Sharon Glotzer's group, clumps of
|
modeled in "this paper"_#Zhang1 by Sharon Glotzer's group, clumps of
|
||||||
granular particles, lipid molecules consiting of one or more point
|
granular particles, lipid molecules consisting of one or more point
|
||||||
dipoles connected to other spheroids or ellipsoids, irregular
|
dipoles connected to other spheroids or ellipsoids, irregular
|
||||||
particles built from line segments (2d) or triangles (3d), and
|
particles built from line segments (2d) or triangles (3d), and
|
||||||
coarse-grain models of nano or colloidal particles consisting of a
|
coarse-grain models of nano or colloidal particles consisting of a
|
||||||
@ -203,11 +222,11 @@ most one rigid body. Which atoms are in which bodies can be defined
|
|||||||
via several options.
|
via several options.
|
||||||
|
|
||||||
NOTE: With the {rigid/small} styles, which require that {bodystyle} be
|
NOTE: With the {rigid/small} styles, which require that {bodystyle} be
|
||||||
specified as {molecule}, you can define a system that has no rigid
|
specified as {molecule} or {custom}, you can define a system that has
|
||||||
bodies initially. This is useful when you are using the {mol} keyword
|
no rigid bodies initially. This is useful when you are using the {mol}
|
||||||
in conjunction with another fix that is adding rigid bodies on-the-fly
|
keyword in conjunction with another fix that is adding rigid bodies
|
||||||
as molecules, such as "fix deposit"_fix_deposit.html or "fix
|
on-the-fly as molecules, such as "fix deposit"_fix_deposit.html or
|
||||||
pour"_fix_pour.html.
|
"fix pour"_fix_pour.html.
|
||||||
|
|
||||||
For bodystyle {single} the entire fix group of atoms is treated as one
|
For bodystyle {single} the entire fix group of atoms is treated as one
|
||||||
rigid body. This option is only allowed for the {rigid} styles.
|
rigid body. This option is only allowed for the {rigid} styles.
|
||||||
@ -222,6 +241,15 @@ molecule ID = 0) surrounding rigid bodies, this may not be what you
|
|||||||
want. Thus you should be careful to use a fix group that only
|
want. Thus you should be careful to use a fix group that only
|
||||||
includes atoms you want to be part of rigid bodies.
|
includes atoms you want to be part of rigid bodies.
|
||||||
|
|
||||||
|
Bodystyle {custom} is similar to bodystyle {molecule}, however some
|
||||||
|
custom properties are used to group atoms into rigid bodies. The
|
||||||
|
special case for molecule/body ID = 0 is not available. Possible
|
||||||
|
custom properties are an integer property associated with atoms through
|
||||||
|
"fix property/atom"_fix_property_atom.html or an atom style variable
|
||||||
|
or an atomfile style variable. For the latter two, the variable value
|
||||||
|
will be rounded to an integer and then rigid bodies defined from
|
||||||
|
those values.
|
||||||
|
|
||||||
For bodystyle {group}, each of the listed groups is treated as a
|
For bodystyle {group}, each of the listed groups is treated as a
|
||||||
separate rigid body. Only atoms that are also in the fix group are
|
separate rigid body. Only atoms that are also in the fix group are
|
||||||
included in each rigid body. This option is only allowed for the
|
included in each rigid body. This option is only allowed for the
|
||||||
@ -703,6 +731,11 @@ NVT, NPT, NPH rigid styles to add the energy change induced by the
|
|||||||
thermostatting to the system's potential energy as part of
|
thermostatting to the system's potential energy as part of
|
||||||
"thermodynamic output"_thermo_style.html.
|
"thermodynamic output"_thermo_style.html.
|
||||||
|
|
||||||
|
The "fix_modify"_fix_modify.html {virial} option is supported by this
|
||||||
|
fix to add the contribution due to keeping the objects rigid to the
|
||||||
|
system's virial as part of "thermodynamic output"_thermo_style.html.
|
||||||
|
The default is {virial yes}
|
||||||
|
|
||||||
The "fix_modify"_fix_modify.html {temp} and {press} options are
|
The "fix_modify"_fix_modify.html {temp} and {press} options are
|
||||||
supported by the 4 NPT and NPH rigid styles to change the computes
|
supported by the 4 NPT and NPH rigid styles to change the computes
|
||||||
used to calculate the instantaneous pressure tensor. Note that the 2
|
used to calculate the instantaneous pressure tensor. Note that the 2
|
||||||
|
|||||||
@ -7,6 +7,7 @@
|
|||||||
:line
|
:line
|
||||||
|
|
||||||
fix rx command :h3
|
fix rx command :h3
|
||||||
|
fix rx/kk command :h3
|
||||||
|
|
||||||
[Syntax:]
|
[Syntax:]
|
||||||
|
|
||||||
@ -182,6 +183,29 @@ read_data data.dpd fix foo_SPECIES NULL Species
|
|||||||
|
|
||||||
:line
|
:line
|
||||||
|
|
||||||
|
Styles with a {gpu}, {intel}, {kk}, {omp}, or {opt} suffix are
|
||||||
|
functionally the same as the corresponding style without the suffix.
|
||||||
|
They have been optimized to run faster, depending on your available
|
||||||
|
hardware, as discussed in "Section 5"_Section_accelerate.html
|
||||||
|
of the manual. The accelerated styles take the same arguments and
|
||||||
|
should produce the same results, except for round-off and precision
|
||||||
|
issues.
|
||||||
|
|
||||||
|
These accelerated styles are part of the GPU, USER-INTEL, KOKKOS,
|
||||||
|
USER-OMP and OPT packages, respectively. They are only enabled if
|
||||||
|
LAMMPS was built with those packages. See the "Making
|
||||||
|
LAMMPS"_Section_start.html#start_3 section for more info.
|
||||||
|
|
||||||
|
You can specify the accelerated styles explicitly in your input script
|
||||||
|
by including their suffix, or you can use the "-suffix command-line
|
||||||
|
switch"_Section_start.html#start_6 when you invoke LAMMPS, or you can
|
||||||
|
use the "suffix"_suffix.html command in your input script.
|
||||||
|
|
||||||
|
See "Section 5"_Section_accelerate.html of the manual for
|
||||||
|
more instructions on how to use the accelerated styles effectively.
|
||||||
|
|
||||||
|
:line
|
||||||
|
|
||||||
[Restrictions:]
|
[Restrictions:]
|
||||||
|
|
||||||
This command is part of the USER-DPD package. It is only enabled if
|
This command is part of the USER-DPD package. It is only enabled if
|
||||||
|
|||||||
@ -37,8 +37,8 @@ keyword = {file} or {ave} or {start} or {file} or {overwrite}:l
|
|||||||
compute 1 all saed 0.0251 Al O Kmax 1.70 Zone 0 0 1 dR_Ewald 0.01 c 0.5 0.5 0.5
|
compute 1 all saed 0.0251 Al O Kmax 1.70 Zone 0 0 1 dR_Ewald 0.01 c 0.5 0.5 0.5
|
||||||
compute 2 all saed 0.0251 Ni Kmax 1.70 Zone 0 0 0 c 0.05 0.05 0.05 manual echo :pre
|
compute 2 all saed 0.0251 Ni Kmax 1.70 Zone 0 0 0 c 0.05 0.05 0.05 manual echo :pre
|
||||||
|
|
||||||
fix saed/vtk 1 1 1 c_1 file Al2O3_001.saed
|
fix 1 all saed/vtk 1 1 1 c_1 file Al2O3_001.saed
|
||||||
fix saed/vtk 1 1 1 c_2 file Ni_000.saed :pre
|
fix 2 all saed/vtk 1 1 1 c_2 file Ni_000.saed :pre
|
||||||
|
|
||||||
[Description:]
|
[Description:]
|
||||||
|
|
||||||
|
|||||||
@ -58,7 +58,7 @@ required in order to eliminate velocity components along the bonds
|
|||||||
In order to formulate individual constraints for SHAKE and RATTLE,
|
In order to formulate individual constraints for SHAKE and RATTLE,
|
||||||
focus on a single molecule whose bonds are constrained. Let Ri and Vi
|
focus on a single molecule whose bonds are constrained. Let Ri and Vi
|
||||||
be the position and velocity of atom {i} at time {n}, for
|
be the position and velocity of atom {i} at time {n}, for
|
||||||
{i}=1,...,{N}, where {N} is the number of sites of our reference
|
{i} =1,...,{N}, where {N} is the number of sites of our reference
|
||||||
molecule. The distance vector between sites {i} and {j} is given by
|
molecule. The distance vector between sites {i} and {j} is given by
|
||||||
|
|
||||||
:c,image(Eqs/fix_rattle_rij.jpg)
|
:c,image(Eqs/fix_rattle_rij.jpg)
|
||||||
@ -186,6 +186,11 @@ to 1 and recompiling LAMMPS.
|
|||||||
|
|
||||||
[Restart, fix_modify, output, run start/stop, minimize info:]
|
[Restart, fix_modify, output, run start/stop, minimize info:]
|
||||||
|
|
||||||
|
The "fix_modify"_fix_modify.html {virial} option is supported by this
|
||||||
|
fix to add the contribution due to keeping the constraints to the
|
||||||
|
system's virial as part of "thermodynamic output"_thermo_style.html.
|
||||||
|
The default is {virial yes}
|
||||||
|
|
||||||
No information about these fixes is written to "binary restart
|
No information about these fixes is written to "binary restart
|
||||||
files"_restart.html. None of the "fix_modify"_fix_modify.html options
|
files"_restart.html. None of the "fix_modify"_fix_modify.html options
|
||||||
are relevant to these fixes. No global or per-atom quantities are
|
are relevant to these fixes. No global or per-atom quantities are
|
||||||
|
|||||||
@ -7,6 +7,7 @@
|
|||||||
:line
|
:line
|
||||||
|
|
||||||
fix shardlow command :h3
|
fix shardlow command :h3
|
||||||
|
fix shardlow/kk command :h3
|
||||||
|
|
||||||
[Syntax:]
|
[Syntax:]
|
||||||
|
|
||||||
@ -52,6 +53,29 @@ examples/USER/dpd directory.
|
|||||||
|
|
||||||
:line
|
:line
|
||||||
|
|
||||||
|
Styles with a {gpu}, {intel}, {kk}, {omp}, or {opt} suffix are
|
||||||
|
functionally the same as the corresponding style without the suffix.
|
||||||
|
They have been optimized to run faster, depending on your available
|
||||||
|
hardware, as discussed in "Section 5"_Section_accelerate.html
|
||||||
|
of the manual. The accelerated styles take the same arguments and
|
||||||
|
should produce the same results, except for round-off and precision
|
||||||
|
issues.
|
||||||
|
|
||||||
|
These accelerated styles are part of the GPU, USER-INTEL, KOKKOS,
|
||||||
|
USER-OMP and OPT packages, respectively. They are only enabled if
|
||||||
|
LAMMPS was built with those packages. See the "Making
|
||||||
|
LAMMPS"_Section_start.html#start_3 section for more info.
|
||||||
|
|
||||||
|
You can specify the accelerated styles explicitly in your input script
|
||||||
|
by including their suffix, or you can use the "-suffix command-line
|
||||||
|
switch"_Section_start.html#start_6 when you invoke LAMMPS, or you can
|
||||||
|
use the "suffix"_suffix.html command in your input script.
|
||||||
|
|
||||||
|
See "Section 5"_Section_accelerate.html of the manual for
|
||||||
|
more instructions on how to use the accelerated styles effectively.
|
||||||
|
|
||||||
|
:line
|
||||||
|
|
||||||
[Restrictions:]
|
[Restrictions:]
|
||||||
|
|
||||||
This command is part of the USER-DPD package. It is only enabled if
|
This command is part of the USER-DPD package. It is only enabled if
|
||||||
|
|||||||
@ -101,6 +101,11 @@ See the "read_restart"_read_restart.html command for info on how to
|
|||||||
re-specify a fix in an input script that reads a restart file, so that
|
re-specify a fix in an input script that reads a restart file, so that
|
||||||
the operation of the fix continues in an uninterrupted fashion.
|
the operation of the fix continues in an uninterrupted fashion.
|
||||||
|
|
||||||
|
The "fix_modify"_fix_modify.html {virial} option is supported by this
|
||||||
|
fix to add the contribution due to the added forces on atoms to the
|
||||||
|
system's virial as part of "thermodynamic output"_thermo_style.html.
|
||||||
|
The default is {virial no}
|
||||||
|
|
||||||
The "fix_modify"_fix_modify.html {respa} option is supported by
|
The "fix_modify"_fix_modify.html {respa} option is supported by
|
||||||
this fix. This allows to set at which level of the "r-RESPA"_run_style.html
|
this fix. This allows to set at which level of the "r-RESPA"_run_style.html
|
||||||
integrator the fix is adding its forces. Default is the outermost level.
|
integrator the fix is adding its forces. Default is the outermost level.
|
||||||
|
|||||||
@ -14,15 +14,12 @@ fix ID group-ID smd/integrate_tlsph keyword values :pre
|
|||||||
|
|
||||||
ID, group-ID are documented in "fix"_fix.html command
|
ID, group-ID are documented in "fix"_fix.html command
|
||||||
smd/integrate_tlsph = style name of this fix command
|
smd/integrate_tlsph = style name of this fix command
|
||||||
zero or more keyword/value pairs may be appended :ul
|
zero or more keyword/value pairs may be appended
|
||||||
|
keyword = {limit_velocity} :ul
|
||||||
keyword = {limit_velocity} :l
|
|
||||||
|
|
||||||
{limit_velocity} value = max_vel
|
{limit_velocity} value = max_vel
|
||||||
max_vel = maximum allowed velocity :pre
|
max_vel = maximum allowed velocity :pre
|
||||||
|
|
||||||
:ule
|
|
||||||
|
|
||||||
[Examples:]
|
[Examples:]
|
||||||
|
|
||||||
fix 1 all smd/integrate_tlsph
|
fix 1 all smd/integrate_tlsph
|
||||||
|
|||||||
@ -14,9 +14,8 @@ fix ID group-ID smd/integrate_ulsph keyword :pre
|
|||||||
|
|
||||||
ID, group-ID are documented in "fix"_fix.html command
|
ID, group-ID are documented in "fix"_fix.html command
|
||||||
smd/integrate_ulsph = style name of this fix command
|
smd/integrate_ulsph = style name of this fix command
|
||||||
zero or more keyword/value pairs may be appended :ul
|
zero or more keyword/value pairs may be appended
|
||||||
|
keyword = adjust_radius or limit_velocity :ul
|
||||||
keyword = adjust_radius or limit_velocity
|
|
||||||
|
|
||||||
adjust_radius values = adjust_radius_factor min_nn max_nn
|
adjust_radius values = adjust_radius_factor min_nn max_nn
|
||||||
adjust_radius_factor = factor which scale the smooth/kernel radius
|
adjust_radius_factor = factor which scale the smooth/kernel radius
|
||||||
@ -28,7 +27,7 @@ limit_velocity values = max_velocity
|
|||||||
|
|
||||||
[Examples:]
|
[Examples:]
|
||||||
|
|
||||||
fix 1 all smd/integrate_ulsph adjust_radius 1.02 25 50 :pre
|
fix 1 all smd/integrate_ulsph adjust_radius 1.02 25 50
|
||||||
fix 1 all smd/integrate_ulsph limit_velocity 1000 :pre
|
fix 1 all smd/integrate_ulsph limit_velocity 1000 :pre
|
||||||
|
|
||||||
[Description:]
|
[Description:]
|
||||||
@ -38,7 +37,7 @@ See "this PDF guide"_PDF/SMD_LAMMPS_userguide.pdf to using Smooth Mach Dynamics
|
|||||||
|
|
||||||
The {adjust_radius} keyword activates dynamic adjustment of the per-particle SPH smoothing kernel radius such that the number of neighbors per particles remains
|
The {adjust_radius} keyword activates dynamic adjustment of the per-particle SPH smoothing kernel radius such that the number of neighbors per particles remains
|
||||||
within the interval {min_nn} to {max_nn}. The parameter {adjust_radius_factor} determines the amount of adjustment per timestep. Typical values are
|
within the interval {min_nn} to {max_nn}. The parameter {adjust_radius_factor} determines the amount of adjustment per timestep. Typical values are
|
||||||
{adjust_radius_factor}=1.02, {min_nn}=15, and {max_nn}=20.
|
{adjust_radius_factor} =1.02, {min_nn} =15, and {max_nn} =20.
|
||||||
|
|
||||||
The {limit_velocity} keyword will control the velocity, scaling the norm of
|
The {limit_velocity} keyword will control the velocity, scaling the norm of
|
||||||
the velocity vector to max_vel in case it exceeds this velocity limit.
|
the velocity vector to max_vel in case it exceeds this velocity limit.
|
||||||
|
|||||||
19
doc/src/fix_surface_global.txt
Normal file
@ -0,0 +1,19 @@
|
|||||||
|
"LAMMPS WWW Site"_lws - "LAMMPS Documentation"_ld - "LAMMPS Commands"_lc :c
|
||||||
|
|
||||||
|
:link(lws,http://lammps.sandia.gov)
|
||||||
|
:link(ld,Manual.html)
|
||||||
|
:link(lc,Section_commands.html#comm)
|
||||||
|
|
||||||
|
:line
|
||||||
|
|
||||||
|
fix wall/surface/globale command :h3
|
||||||
|
|
||||||
|
[Description:]
|
||||||
|
|
||||||
|
This feature is not yet implemented.
|
||||||
|
|
||||||
|
[Related commands:]
|
||||||
|
|
||||||
|
"dump image"_dump_image.html
|
||||||
|
|
||||||
|
|
||||||
@ -34,7 +34,7 @@ by performing a nonequilibrium thermodynamic integration between the
|
|||||||
solid of interest and an Einstein crystal. A detailed explanation of
|
solid of interest and an Einstein crystal. A detailed explanation of
|
||||||
how to use this command and choose its parameters for optimal
|
how to use this command and choose its parameters for optimal
|
||||||
performance and accuracy is given in the paper by
|
performance and accuracy is given in the paper by
|
||||||
"Freitas"_#Freitas. The paper also presents a short summary of the
|
"Freitas"_#Freitas1. The paper also presents a short summary of the
|
||||||
theory of nonequilibrium thermodynamic integrations.
|
theory of nonequilibrium thermodynamic integrations.
|
||||||
|
|
||||||
The thermodynamic integration procedure is performed by rescaling the
|
The thermodynamic integration procedure is performed by rescaling the
|
||||||
@ -67,13 +67,13 @@ of lambda is kept equal to zero and the fix has no other effect on the
|
|||||||
dynamics of the system.
|
dynamics of the system.
|
||||||
|
|
||||||
The processes described above is known as nonequilibrium thermodynamic
|
The processes described above is known as nonequilibrium thermodynamic
|
||||||
integration and is has been shown ("Freitas"_#Freitas) to present a
|
integration and is has been shown ("Freitas"_#Freitas1) to present a
|
||||||
much superior efficiency when compared to standard equilibrium
|
much superior efficiency when compared to standard equilibrium
|
||||||
methods. The reason why the switching it is made in both directions
|
methods. The reason why the switching it is made in both directions
|
||||||
(potential to Einstein crystal and back) is to eliminate the
|
(potential to Einstein crystal and back) is to eliminate the
|
||||||
dissipated heat due to the nonequilibrium process. Further details
|
dissipated heat due to the nonequilibrium process. Further details
|
||||||
about nonequilibrium thermodynamic integration and its implementation
|
about nonequilibrium thermodynamic integration and its implementation
|
||||||
in LAMMPS is available in "Freitas"_#Freitas.
|
in LAMMPS is available in "Freitas"_#Freitas1.
|
||||||
|
|
||||||
The {function} keyword allows the use of two different lambda
|
The {function} keyword allows the use of two different lambda
|
||||||
paths. Option {1} results in a constant rate of change of lambda with
|
paths. Option {1} results in a constant rate of change of lambda with
|
||||||
@ -94,7 +94,7 @@ thermodynamic integration. The use of option {2} is recommended since
|
|||||||
it results in better accuracy and less dissipation without any
|
it results in better accuracy and less dissipation without any
|
||||||
increase in computational resources cost.
|
increase in computational resources cost.
|
||||||
|
|
||||||
NOTE: As described in "Freitas"_#Freitas, it is important to keep the
|
NOTE: As described in "Freitas"_#Freitas1, it is important to keep the
|
||||||
center-of-mass fixed during the thermodynamic integration. A nonzero
|
center-of-mass fixed during the thermodynamic integration. A nonzero
|
||||||
total velocity will result in divergences during the integration due
|
total velocity will result in divergences during the integration due
|
||||||
to the fact that the atoms are 'attached' to their equilibrium
|
to the fact that the atoms are 'attached' to their equilibrium
|
||||||
@ -156,7 +156,7 @@ The keyword default is function = 1.
|
|||||||
|
|
||||||
:line
|
:line
|
||||||
|
|
||||||
:link(Freitas)
|
:link(Freitas1)
|
||||||
[(Freitas)] Freitas, Asta, and de Koning, Computational Materials
|
[(Freitas)] Freitas, Asta, and de Koning, Computational Materials
|
||||||
Science, 112, 333 (2016).
|
Science, 112, 333 (2016).
|
||||||
|
|
||||||
|
|||||||
@ -7,6 +7,7 @@
|
|||||||
:line
|
:line
|
||||||
|
|
||||||
fix wall/lj93 command :h3
|
fix wall/lj93 command :h3
|
||||||
|
fix wall/lj93/kk command :h3
|
||||||
fix wall/lj126 command :h3
|
fix wall/lj126 command :h3
|
||||||
fix wall/lj1043 command :h3
|
fix wall/lj1043 command :h3
|
||||||
fix wall/colloid command :h3
|
fix wall/colloid command :h3
|
||||||
@ -251,6 +252,11 @@ fix to add the energy of interaction between atoms and each wall to
|
|||||||
the system's potential energy as part of "thermodynamic
|
the system's potential energy as part of "thermodynamic
|
||||||
output"_thermo_style.html.
|
output"_thermo_style.html.
|
||||||
|
|
||||||
|
The "fix_modify"_fix_modify.html {virial} option is supported by this
|
||||||
|
fix to add the contribution due to the interaction between
|
||||||
|
atoms and each wall to the system's virial as part of "thermodynamic
|
||||||
|
output"_thermo_style.html. The default is {virial no}
|
||||||
|
|
||||||
The "fix_modify"_fix_modify.html {respa} option is supported by this
|
The "fix_modify"_fix_modify.html {respa} option is supported by this
|
||||||
fix. This allows to set at which level of the "r-RESPA"_run_style.html
|
fix. This allows to set at which level of the "r-RESPA"_run_style.html
|
||||||
integrator the fix is adding its forces. Default is the outermost level.
|
integrator the fix is adding its forces. Default is the outermost level.
|
||||||
@ -277,6 +283,31 @@ the total potential energy of the system (the quantity being
|
|||||||
minimized), you MUST enable the "fix_modify"_fix_modify.html {energy}
|
minimized), you MUST enable the "fix_modify"_fix_modify.html {energy}
|
||||||
option for this fix.
|
option for this fix.
|
||||||
|
|
||||||
|
:line
|
||||||
|
|
||||||
|
Styles with a {gpu}, {intel}, {kk}, {omp}, or {opt} suffix are
|
||||||
|
functionally the same as the corresponding style without the suffix.
|
||||||
|
They have been optimized to run faster, depending on your available
|
||||||
|
hardware, as discussed in "Section 5"_Section_accelerate.html
|
||||||
|
of the manual. The accelerated styles take the same arguments and
|
||||||
|
should produce the same results, except for round-off and precision
|
||||||
|
issues.
|
||||||
|
|
||||||
|
These accelerated styles are part of the GPU, USER-INTEL, KOKKOS,
|
||||||
|
USER-OMP and OPT packages, respectively. They are only enabled if
|
||||||
|
LAMMPS was built with those packages. See the "Making
|
||||||
|
LAMMPS"_Section_start.html#start_3 section for more info.
|
||||||
|
|
||||||
|
You can specify the accelerated styles explicitly in your input script
|
||||||
|
by including their suffix, or you can use the "-suffix command-line
|
||||||
|
switch"_Section_start.html#start_6 when you invoke LAMMPS, or you can
|
||||||
|
use the "suffix"_suffix.html command in your input script.
|
||||||
|
|
||||||
|
See "Section 5"_Section_accelerate.html of the manual for
|
||||||
|
more instructions on how to use the accelerated styles effectively.
|
||||||
|
|
||||||
|
:line
|
||||||
|
|
||||||
[Restrictions:] none
|
[Restrictions:] none
|
||||||
|
|
||||||
[Related commands:]
|
[Related commands:]
|
||||||
|
|||||||
@ -15,7 +15,7 @@ fix ID group-ID wall/region region-ID style epsilon sigma cutoff :pre
|
|||||||
ID, group-ID are documented in "fix"_fix.html command
|
ID, group-ID are documented in "fix"_fix.html command
|
||||||
wall/region = style name of this fix command
|
wall/region = style name of this fix command
|
||||||
region-ID = region whose boundary will act as wall
|
region-ID = region whose boundary will act as wall
|
||||||
style = {lj93} or {lj126} or {colloid} or {harmonic}
|
style = {lj93} or {lj126} or {lj1043} or {colloid} or {harmonic}
|
||||||
epsilon = strength factor for wall-particle interaction (energy or energy/distance^2 units)
|
epsilon = strength factor for wall-particle interaction (energy or energy/distance^2 units)
|
||||||
sigma = size factor for wall-particle interaction (distance units)
|
sigma = size factor for wall-particle interaction (distance units)
|
||||||
cutoff = distance from wall at which wall-particle interaction is cut off (distance units) :ul
|
cutoff = distance from wall at which wall-particle interaction is cut off (distance units) :ul
|
||||||
@ -112,6 +112,10 @@ For style {lj126}, the energy E is given by the 12/6 potential:
|
|||||||
|
|
||||||
:c,image(Eqs/pair_lj.jpg)
|
:c,image(Eqs/pair_lj.jpg)
|
||||||
|
|
||||||
|
For style {wall/lj1043}, the energy E is given by the 10/4/3 potential:
|
||||||
|
|
||||||
|
:c,image(Eqs/fix_wall_lj1043.jpg)
|
||||||
|
|
||||||
For style {colloid}, the energy E is given by an integrated form of
|
For style {colloid}, the energy E is given by an integrated form of
|
||||||
the "pair_style colloid"_pair_colloid.html potential:
|
the "pair_style colloid"_pair_colloid.html potential:
|
||||||
|
|
||||||
@ -128,49 +132,8 @@ surface no longer interact. The energy of the wall potential is
|
|||||||
shifted so that the wall-particle interaction energy is 0.0 at the
|
shifted so that the wall-particle interaction energy is 0.0 at the
|
||||||
cutoff distance.
|
cutoff distance.
|
||||||
|
|
||||||
For the {lj93} and {lj126} styles, {epsilon} and {sigma} are the usual
|
For a full description of these wall styles, see fix_style
|
||||||
Lennard-Jones parameters, which determine the strength and size of the
|
"wall"_fix_wall.html
|
||||||
particle as it interacts with the wall. Epsilon has energy units.
|
|
||||||
Note that this {epsilon} and {sigma} may be different than any
|
|
||||||
{epsilon} or {sigma} values defined for a pair style that computes
|
|
||||||
particle-particle interactions.
|
|
||||||
|
|
||||||
The {lj93} interaction is derived by integrating over a 3d
|
|
||||||
half-lattice of Lennard-Jones 12/6 particles. The {lj126} interaction
|
|
||||||
is effectively a harder, more repulsive wall interaction.
|
|
||||||
|
|
||||||
For the {colloid} style, {epsilon} is effectively a Hamaker constant
|
|
||||||
with energy units for the colloid-wall interaction, {R} is the radius
|
|
||||||
of the colloid particle, {D} is the distance from the surface of the
|
|
||||||
colloid particle to the wall (r-R), and {sigma} is the size of a
|
|
||||||
constituent LJ particle inside the colloid particle. Note that the
|
|
||||||
cutoff distance Rc in this case is the distance from the colloid
|
|
||||||
particle center to the wall.
|
|
||||||
|
|
||||||
The {colloid} interaction is derived by integrating over constituent
|
|
||||||
LJ particles of size {sigma} within the colloid particle and a 3d
|
|
||||||
half-lattice of Lennard-Jones 12/6 particles of size {sigma} in the
|
|
||||||
wall.
|
|
||||||
|
|
||||||
For the {wall/harmonic} style, {epsilon} is effectively the spring
|
|
||||||
constant K, and has units (energy/distance^2). The input parameter
|
|
||||||
{sigma} is ignored. The minimum energy position of the harmonic
|
|
||||||
spring is at the {cutoff}. This is a repulsive-only spring since the
|
|
||||||
interaction is truncated at the {cutoff}
|
|
||||||
|
|
||||||
NOTE: For all of the styles, you must insure that r is always > 0 for
|
|
||||||
all particles in the group, or LAMMPS will generate an error. This
|
|
||||||
means you cannot start your simulation with particles on the region
|
|
||||||
surface (r = 0) or with particles on the wrong side of the region
|
|
||||||
surface (r < 0). For the {wall/lj93} and {wall/lj126} styles, the
|
|
||||||
energy of the wall/particle interaction (and hence the force on the
|
|
||||||
particle) blows up as r -> 0. The {wall/colloid} style is even more
|
|
||||||
restrictive, since the energy blows up as D = r-R -> 0. This means
|
|
||||||
the finite-size particles of radius R must be a distance larger than R
|
|
||||||
from the region surface. The {harmonic} style is a softer potential
|
|
||||||
and does not blow up as r -> 0, but you must use a large enough
|
|
||||||
{epsilon} that particles always reamin on the correct side of the
|
|
||||||
region surface (r > 0).
|
|
||||||
|
|
||||||
[Restart, fix_modify, output, run start/stop, minimize info:]
|
[Restart, fix_modify, output, run start/stop, minimize info:]
|
||||||
|
|
||||||
@ -182,6 +145,11 @@ fix to add the energy of interaction between atoms and the wall to the
|
|||||||
system's potential energy as part of "thermodynamic
|
system's potential energy as part of "thermodynamic
|
||||||
output"_thermo_style.html.
|
output"_thermo_style.html.
|
||||||
|
|
||||||
|
The "fix_modify"_fix_modify.html {virial} option is supported by this
|
||||||
|
fix to add the contribution due to the interaction between
|
||||||
|
atoms and each wall to the system's virial as part of "thermodynamic
|
||||||
|
output"_thermo_style.html. The default is {virial no}
|
||||||
|
|
||||||
The "fix_modify"_fix_modify.html {respa} option is supported by this
|
The "fix_modify"_fix_modify.html {respa} option is supported by this
|
||||||
fix. This allows to set at which level of the "r-RESPA"_run_style.html
|
fix. This allows to set at which level of the "r-RESPA"_run_style.html
|
||||||
integrator the fix is adding its forces. Default is the outermost level.
|
integrator the fix is adding its forces. Default is the outermost level.
|
||||||
|
|||||||
@ -59,6 +59,7 @@ Fixes :h1
|
|||||||
fix_langevin
|
fix_langevin
|
||||||
fix_langevin_drude
|
fix_langevin_drude
|
||||||
fix_langevin_eff
|
fix_langevin_eff
|
||||||
|
fix_latte
|
||||||
fix_lb_fluid
|
fix_lb_fluid
|
||||||
fix_lb_momentum
|
fix_lb_momentum
|
||||||
fix_lb_pc
|
fix_lb_pc
|
||||||
@ -76,6 +77,7 @@ Fixes :h1
|
|||||||
fix_neb
|
fix_neb
|
||||||
fix_nh
|
fix_nh
|
||||||
fix_nh_eff
|
fix_nh_eff
|
||||||
|
fix_nh_uef
|
||||||
fix_nph_asphere
|
fix_nph_asphere
|
||||||
fix_nph_body
|
fix_nph_body
|
||||||
fix_nph_sphere
|
fix_nph_sphere
|
||||||
@ -113,7 +115,8 @@ Fixes :h1
|
|||||||
fix_press_berendsen
|
fix_press_berendsen
|
||||||
fix_print
|
fix_print
|
||||||
fix_property_atom
|
fix_property_atom
|
||||||
fix_python
|
fix_python_invoke
|
||||||
|
fix_python_move
|
||||||
fix_qbmsst
|
fix_qbmsst
|
||||||
fix_qeq
|
fix_qeq
|
||||||
fix_qeq_comb
|
fix_qeq_comb
|
||||||
@ -124,6 +127,7 @@ Fixes :h1
|
|||||||
fix_reaxc_species
|
fix_reaxc_species
|
||||||
fix_recenter
|
fix_recenter
|
||||||
fix_restrain
|
fix_restrain
|
||||||
|
fix_rhok
|
||||||
fix_rigid
|
fix_rigid
|
||||||
fix_rx
|
fix_rx
|
||||||
fix_saed_vtk
|
fix_saed_vtk
|
||||||
@ -144,6 +148,7 @@ Fixes :h1
|
|||||||
fix_srd
|
fix_srd
|
||||||
fix_store_force
|
fix_store_force
|
||||||
fix_store_state
|
fix_store_state
|
||||||
|
fix_surface_global
|
||||||
fix_temp_berendsen
|
fix_temp_berendsen
|
||||||
fix_temp_csvr
|
fix_temp_csvr
|
||||||
fix_temp_rescale
|
fix_temp_rescale
|
||||||
|
|||||||
65
doc/src/improper_inversion_harmonic.txt
Normal file
@ -0,0 +1,65 @@
|
|||||||
|
"LAMMPS WWW Site"_lws - "LAMMPS Documentation"_ld - "LAMMPS Commands"_lc :c
|
||||||
|
|
||||||
|
:link(lws,http://lammps.sandia.gov)
|
||||||
|
:link(ld,Manual.html)
|
||||||
|
:link(lc,Section_commands.html#comm)
|
||||||
|
|
||||||
|
:line
|
||||||
|
|
||||||
|
improper_style inversion/harmonic command :h3
|
||||||
|
|
||||||
|
[Syntax:]
|
||||||
|
|
||||||
|
improper_style inversion/harmonic :pre
|
||||||
|
|
||||||
|
[Examples:]
|
||||||
|
|
||||||
|
improper_style inversion/harmonic
|
||||||
|
improper_coeff 1 18.776340 0.000000 :pre
|
||||||
|
|
||||||
|
[Description:]
|
||||||
|
|
||||||
|
The {inversion/harmonic} improper style follows the Wilson-Decius
|
||||||
|
out-of-plane angle definition and uses an harmonic potential:
|
||||||
|
|
||||||
|
:c,image(Eqs/improper_inversion_harmonic.jpg)
|
||||||
|
|
||||||
|
where K is the force constant and omega is the angle evaluated for
|
||||||
|
all three axis-plane combinations centered around the atom I. For
|
||||||
|
the IL axis and the IJK plane omega looks as follows:
|
||||||
|
|
||||||
|
:c,image(Eqs/umbrella.jpg)
|
||||||
|
|
||||||
|
Note that the {inversion/harmonic} angle term evaluation differs to
|
||||||
|
the "improper_umbrella"_improper_umbrella.html due to the cyclic
|
||||||
|
evaluation of all possible angles omega.
|
||||||
|
|
||||||
|
The following coefficients must be defined for each improper type via
|
||||||
|
the "improper_coeff"_improper_coeff.html command as in the example
|
||||||
|
above, or in the data file or restart files read by the
|
||||||
|
"read_data"_read_data.html or "read_restart"_read_restart.html
|
||||||
|
commands:
|
||||||
|
|
||||||
|
K (energy)
|
||||||
|
omega0 (degrees) :ul
|
||||||
|
|
||||||
|
If omega0 = 0 the potential term has a minimum for the planar
|
||||||
|
structure. Otherwise it has two minima at +/- omega0, with a barrier
|
||||||
|
in between.
|
||||||
|
|
||||||
|
:line
|
||||||
|
|
||||||
|
[Restrictions:]
|
||||||
|
|
||||||
|
This improper style can only be used if LAMMPS was built with the
|
||||||
|
USER-MOFFF package. See the "Making
|
||||||
|
LAMMPS"_Section_start.html#start_3 section for more info on packages.
|
||||||
|
|
||||||
|
[Related commands:]
|
||||||
|
|
||||||
|
"improper_coeff"_improper_coeff.html
|
||||||
|
|
||||||
|
[Default:] none
|
||||||
|
|
||||||
|
:line
|
||||||
|
|
||||||
@ -12,6 +12,7 @@ Improper Styles :h1
|
|||||||
improper_fourier
|
improper_fourier
|
||||||
improper_harmonic
|
improper_harmonic
|
||||||
improper_hybrid
|
improper_hybrid
|
||||||
|
improper_inversion_harmonic
|
||||||
improper_none
|
improper_none
|
||||||
improper_ring
|
improper_ring
|
||||||
improper_umbrella
|
improper_umbrella
|
||||||
|
|||||||
@ -12,7 +12,7 @@ info command :h3
|
|||||||
|
|
||||||
info args :pre
|
info args :pre
|
||||||
|
|
||||||
args = one or more of the following keywords: {out}, {all}, {system}, {memory}, {communication}, {computes}, {dumps}, {fixes}, {groups}, {regions}, {variables}, {styles}, {time}, or {configuration}
|
args = one or more of the following keywords: {out}, {all}, {system}, {memory}, {communication}, {computes}, {dumps}, {fixes}, {groups}, {regions}, {variables}, {coeffs}, {styles}, {time}, or {configuration}
|
||||||
{out} values = {screen}, {log}, {append} filename, {overwrite} filename
|
{out} values = {screen}, {log}, {append} filename, {overwrite} filename
|
||||||
{styles} values = {all}, {angle}, {atom}, {bond}, {compute}, {command}, {dump}, {dihedral}, {fix}, {improper}, {integrate}, {kspace}, {minimize}, {pair}, {region} :ul
|
{styles} values = {all}, {angle}, {atom}, {bond}, {compute}, {command}, {dump}, {dihedral}, {fix}, {improper}, {integrate}, {kspace}, {minimize}, {pair}, {region} :ul
|
||||||
|
|
||||||
@ -81,6 +81,11 @@ The {variables} category prints a list of all currently defined
|
|||||||
variables, their names, styles, definition and last computed value, if
|
variables, their names, styles, definition and last computed value, if
|
||||||
available.
|
available.
|
||||||
|
|
||||||
|
The {coeffs} category prints a list for each defined force style
|
||||||
|
(pair, bond, angle, dihedral, improper) indicating which of the
|
||||||
|
corresponding coefficients have been set. This can be very helpful
|
||||||
|
to debug error messages like "All pair coeffs are not set".
|
||||||
|
|
||||||
The {styles} category prints the list of styles available in the
|
The {styles} category prints the list of styles available in the
|
||||||
current LAMMPS binary. It supports one of the following options
|
current LAMMPS binary. It supports one of the following options
|
||||||
to control which category of styles is printed out:
|
to control which category of styles is printed out:
|
||||||
|
|||||||
@ -1,6 +1,5 @@
|
|||||||
#HTMLDOC 1.8.27
|
#HTMLDOC 1.8.28
|
||||||
-t pdf14 -f "../Manual.pdf" --book --toclevels 4 --no-numbered --toctitle "Table of Contents" --title --textcolor #000000 --linkcolor #0000ff --linkstyle plain --bodycolor #ffffff --size Universal --left 1.00in --right 0.50in --top 0.50in --bottom 0.50in --header .t. --header1 ... --footer ..1 --nup 1 --tocheader .t. --tocfooter ..i --portrait --color --no-pscommands --no-xrxcomments --compression=1 --jpeg=0 --fontsize 11.0 --fontspacing 1.2 --headingfont helvetica --bodyfont times --headfootsize 11.0 --headfootfont helvetica --charset iso-8859-1 --links --embedfonts --pagemode document --pagelayout single --firstpage c1 --pageeffect none --pageduration 10 --effectduration 1.0 --no-encryption --permissions all --owner-password "" --user-password "" --browserwidth 680 --no-strict --no-overflow
|
-t pdf14 -f "../Manual.pdf" --book --toclevels 4 --no-numbered --toctitle "Table of Contents" --title --textcolor #000000 --linkcolor #0000ff --linkstyle plain --bodycolor #ffffff --size Universal --left 1.00in --right 0.50in --top 0.50in --bottom 0.50in --header .t. --header1 ... --footer ..1 --nup 1 --tocheader .t. --tocfooter ..i --portrait --color --no-pscommands --no-xrxcomments --compression=9 --jpeg=0 --fontsize 11.0 --fontspacing 1.2 --headingfont Sans --bodyfont Serif --headfootsize 11.0 --headfootfont Sans-Bold --charset iso-8859-15 --links --embedfonts --pagemode document --pagelayout single --firstpage c1 --pageeffect none --pageduration 10 --effectduration 1.0 --no-encryption --permissions all --owner-password "" --user-password "" --browserwidth 680 --no-strict --no-overflow
|
||||||
|
|
||||||
Manual.html
|
Manual.html
|
||||||
Section_intro.html
|
Section_intro.html
|
||||||
Section_start.html
|
Section_start.html
|
||||||
@ -62,6 +61,7 @@ dump_modify.html
|
|||||||
dump_molfile.html
|
dump_molfile.html
|
||||||
dump_netcdf.html
|
dump_netcdf.html
|
||||||
dump_vtk.html
|
dump_vtk.html
|
||||||
|
dump_cfg_uef.html
|
||||||
echo.html
|
echo.html
|
||||||
fix.html
|
fix.html
|
||||||
fix_modify.html
|
fix_modify.html
|
||||||
@ -116,6 +116,7 @@ suffix.html
|
|||||||
tad.html
|
tad.html
|
||||||
temper.html
|
temper.html
|
||||||
temper_grem.html
|
temper_grem.html
|
||||||
|
temper_npt.html
|
||||||
thermo.html
|
thermo.html
|
||||||
thermo_modify.html
|
thermo_modify.html
|
||||||
thermo_style.html
|
thermo_style.html
|
||||||
@ -186,6 +187,7 @@ fix_ipi.html
|
|||||||
fix_langevin.html
|
fix_langevin.html
|
||||||
fix_langevin_drude.html
|
fix_langevin_drude.html
|
||||||
fix_langevin_eff.html
|
fix_langevin_eff.html
|
||||||
|
fix_latte.html
|
||||||
fix_lb_fluid.html
|
fix_lb_fluid.html
|
||||||
fix_lb_momentum.html
|
fix_lb_momentum.html
|
||||||
fix_lb_pc.html
|
fix_lb_pc.html
|
||||||
@ -230,6 +232,7 @@ fix_nvt_manifold_rattle.html
|
|||||||
fix_nvt_sllod.html
|
fix_nvt_sllod.html
|
||||||
fix_nvt_sllod_eff.html
|
fix_nvt_sllod_eff.html
|
||||||
fix_nvt_sphere.html
|
fix_nvt_sphere.html
|
||||||
|
fix_nh_uef.html
|
||||||
fix_oneway.html
|
fix_oneway.html
|
||||||
fix_orient.html
|
fix_orient.html
|
||||||
fix_phonon.html
|
fix_phonon.html
|
||||||
@ -240,7 +243,8 @@ fix_pour.html
|
|||||||
fix_press_berendsen.html
|
fix_press_berendsen.html
|
||||||
fix_print.html
|
fix_print.html
|
||||||
fix_property_atom.html
|
fix_property_atom.html
|
||||||
fix_python.html
|
fix_python_invoke.html
|
||||||
|
fix_python_move.html
|
||||||
fix_qbmsst.html
|
fix_qbmsst.html
|
||||||
fix_qeq.html
|
fix_qeq.html
|
||||||
fix_qeq_comb.html
|
fix_qeq_comb.html
|
||||||
@ -252,6 +256,7 @@ fix_reaxc_species.html
|
|||||||
fix_recenter.html
|
fix_recenter.html
|
||||||
fix_restrain.html
|
fix_restrain.html
|
||||||
fix_rigid.html
|
fix_rigid.html
|
||||||
|
fix_rhok.html
|
||||||
fix_rx.html
|
fix_rx.html
|
||||||
fix_saed_vtk.html
|
fix_saed_vtk.html
|
||||||
fix_setforce.html
|
fix_setforce.html
|
||||||
@ -353,6 +358,7 @@ compute_pe.html
|
|||||||
compute_pe_atom.html
|
compute_pe_atom.html
|
||||||
compute_plasticity_atom.html
|
compute_plasticity_atom.html
|
||||||
compute_pressure.html
|
compute_pressure.html
|
||||||
|
compute_pressure_uef.html
|
||||||
compute_property_atom.html
|
compute_property_atom.html
|
||||||
compute_property_chunk.html
|
compute_property_chunk.html
|
||||||
compute_property_local.html
|
compute_property_local.html
|
||||||
@ -402,6 +408,7 @@ compute_temp_region.html
|
|||||||
compute_temp_region_eff.html
|
compute_temp_region_eff.html
|
||||||
compute_temp_rotate.html
|
compute_temp_rotate.html
|
||||||
compute_temp_sphere.html
|
compute_temp_sphere.html
|
||||||
|
compute_temp_uef.html
|
||||||
compute_ti.html
|
compute_ti.html
|
||||||
compute_torque_chunk.html
|
compute_torque_chunk.html
|
||||||
compute_vacf.html
|
compute_vacf.html
|
||||||
@ -436,6 +443,7 @@ pair_edip.html
|
|||||||
pair_eff.html
|
pair_eff.html
|
||||||
pair_eim.html
|
pair_eim.html
|
||||||
pair_exp6_rx.html
|
pair_exp6_rx.html
|
||||||
|
pair_extep.html
|
||||||
pair_gauss.html
|
pair_gauss.html
|
||||||
pair_gayberne.html
|
pair_gayberne.html
|
||||||
pair_gran.html
|
pair_gran.html
|
||||||
@ -504,6 +512,7 @@ pair_tersoff_mod.html
|
|||||||
pair_tersoff_zbl.html
|
pair_tersoff_zbl.html
|
||||||
pair_thole.html
|
pair_thole.html
|
||||||
pair_tri_lj.html
|
pair_tri_lj.html
|
||||||
|
pair_ufm.html
|
||||||
pair_vashishta.html
|
pair_vashishta.html
|
||||||
pair_yukawa.html
|
pair_yukawa.html
|
||||||
pair_yukawa_colloid.html
|
pair_yukawa_colloid.html
|
||||||
@ -513,7 +522,7 @@ pair_zero.html
|
|||||||
bond_class2.html
|
bond_class2.html
|
||||||
bond_fene.html
|
bond_fene.html
|
||||||
bond_fene_expand.html
|
bond_fene_expand.html
|
||||||
bond_oxdna.html
|
bond_gromos.html
|
||||||
bond_harmonic.html
|
bond_harmonic.html
|
||||||
bond_harmonic_shift.html
|
bond_harmonic_shift.html
|
||||||
bond_harmonic_shift_cut.html
|
bond_harmonic_shift_cut.html
|
||||||
@ -521,6 +530,7 @@ bond_hybrid.html
|
|||||||
bond_morse.html
|
bond_morse.html
|
||||||
bond_none.html
|
bond_none.html
|
||||||
bond_nonlinear.html
|
bond_nonlinear.html
|
||||||
|
bond_oxdna.html
|
||||||
bond_quartic.html
|
bond_quartic.html
|
||||||
bond_table.html
|
bond_table.html
|
||||||
bond_zero.html
|
bond_zero.html
|
||||||
|
|||||||
@ -322,9 +322,9 @@ the fix neb command.
|
|||||||
The forward (reverse) energy barrier is the potential energy of the
|
The forward (reverse) energy barrier is the potential energy of the
|
||||||
highest replica minus the energy of the first (last) replica.
|
highest replica minus the energy of the first (last) replica.
|
||||||
|
|
||||||
Supplementary informations for all replicas can be printed out to the
|
Supplementary information for all replicas can be printed out to the
|
||||||
screen and master log.lammps file by adding the verbose keyword. These
|
screen and master log.lammps file by adding the verbose keyword. This
|
||||||
informations include the following. The "path angle" (pathangle) for
|
information include the following. The "path angle" (pathangle) for
|
||||||
the replica i which is the angle between the 3N-length vectors (Ri-1 -
|
the replica i which is the angle between the 3N-length vectors (Ri-1 -
|
||||||
Ri) and (Ri+1 - Ri) (where Ri is the atomic coordinates of replica
|
Ri) and (Ri+1 - Ri) (where Ri is the atomic coordinates of replica
|
||||||
i). A "path angle" of 180 indicates that replicas i-1, i and i+1 are
|
i). A "path angle" of 180 indicates that replicas i-1, i and i+1 are
|
||||||
@ -339,8 +339,8 @@ energy gradient of image i. ReplicaForce is the two-norm of the
|
|||||||
3N-length force vector (including nudging forces) for replica i.
|
3N-length force vector (including nudging forces) for replica i.
|
||||||
MaxAtomForce is the maximum force component of any atom in replica i.
|
MaxAtomForce is the maximum force component of any atom in replica i.
|
||||||
|
|
||||||
When a NEB calculation does not converge properly, these suplementary
|
When a NEB calculation does not converge properly, the suplementary
|
||||||
informations can help understanding what is going wrong. For instance
|
information can help understanding what is going wrong. For instance
|
||||||
when the path angle becomes accute the definition of tangent used in
|
when the path angle becomes accute the definition of tangent used in
|
||||||
the NEB calculation is questionable and the NEB cannot may diverge
|
the NEB calculation is questionable and the NEB cannot may diverge
|
||||||
"(Maras)"_#Maras2.
|
"(Maras)"_#Maras2.
|
||||||
|
|||||||
@ -62,7 +62,7 @@ args = arguments specific to the style :l
|
|||||||
{no_affinity} values = none
|
{no_affinity} values = none
|
||||||
{kokkos} args = keyword value ...
|
{kokkos} args = keyword value ...
|
||||||
zero or more keyword/value pairs may be appended
|
zero or more keyword/value pairs may be appended
|
||||||
keywords = {neigh} or {neigh/qeq} or {newton} or {binsize} or {comm} or {comm/exchange} or {comm/forward}
|
keywords = {neigh} or {neigh/qeq} or {newton} or {binsize} or {comm} or {comm/exchange} or {comm/forward} or {comm/reverse}
|
||||||
{neigh} value = {full} or {half}
|
{neigh} value = {full} or {half}
|
||||||
full = full neighbor list
|
full = full neighbor list
|
||||||
half = half neighbor list built in thread-safe manner
|
half = half neighbor list built in thread-safe manner
|
||||||
@ -75,9 +75,10 @@ args = arguments specific to the style :l
|
|||||||
{binsize} value = size
|
{binsize} value = size
|
||||||
size = bin size for neighbor list construction (distance units)
|
size = bin size for neighbor list construction (distance units)
|
||||||
{comm} value = {no} or {host} or {device}
|
{comm} value = {no} or {host} or {device}
|
||||||
use value for both comm/exchange and comm/forward
|
use value for comm/exchange and comm/forward and comm/reverse
|
||||||
{comm/exchange} value = {no} or {host} or {device}
|
{comm/exchange} value = {no} or {host} or {device}
|
||||||
{comm/forward} value = {no} or {host} or {device}
|
{comm/forward} value = {no} or {host} or {device}
|
||||||
|
{comm/reverse} value = {no} or {host} or {device}
|
||||||
no = perform communication pack/unpack in non-KOKKOS mode
|
no = perform communication pack/unpack in non-KOKKOS mode
|
||||||
host = perform pack/unpack on host (e.g. with OpenMP threading)
|
host = perform pack/unpack on host (e.g. with OpenMP threading)
|
||||||
device = perform pack/unpack on device (e.g. on GPU)
|
device = perform pack/unpack on device (e.g. on GPU)
|
||||||
@ -335,7 +336,8 @@ from the USER-INTEL package is not used, then the LRT setting is
|
|||||||
ignored and no extra threads are generated. Enabling LRT will replace
|
ignored and no extra threads are generated. Enabling LRT will replace
|
||||||
the "run_style"_run_style.html with the {verlet/lrt/intel} style that
|
the "run_style"_run_style.html with the {verlet/lrt/intel} style that
|
||||||
is identical to the default {verlet} style aside from supporting the
|
is identical to the default {verlet} style aside from supporting the
|
||||||
LRT feature.
|
LRT feature. This feature requires setting the preprocessor flag
|
||||||
|
-DLMP_INTEL_USELRT in the makefile when compiling LAMMPS.
|
||||||
|
|
||||||
The {balance} keyword sets the fraction of "pair
|
The {balance} keyword sets the fraction of "pair
|
||||||
style"_pair_style.html work offloaded to the coprocessor for split
|
style"_pair_style.html work offloaded to the coprocessor for split
|
||||||
@ -428,17 +430,18 @@ Coulombic solver"_kspace_style.html because the GPU is faster at
|
|||||||
performing pairwise interactions, then this rule of thumb may give too
|
performing pairwise interactions, then this rule of thumb may give too
|
||||||
large a binsize.
|
large a binsize.
|
||||||
|
|
||||||
The {comm} and {comm/exchange} and {comm/forward} keywords determine
|
The {comm} and {comm/exchange} and {comm/forward} and {comm/reverse} keywords determine
|
||||||
whether the host or device performs the packing and unpacking of data
|
whether the host or device performs the packing and unpacking of data
|
||||||
when communicating per-atom data between processors. "Exchange"
|
when communicating per-atom data between processors. "Exchange"
|
||||||
communication happens only on timesteps that neighbor lists are
|
communication happens only on timesteps that neighbor lists are
|
||||||
rebuilt. The data is only for atoms that migrate to new processors.
|
rebuilt. The data is only for atoms that migrate to new processors.
|
||||||
"Forward" communication happens every timestep. The data is for atom
|
"Forward" communication happens every timestep. "Reverse" communication
|
||||||
|
happens every timestep if the {newton} option is on. The data is for atom
|
||||||
coordinates and any other atom properties that needs to be updated for
|
coordinates and any other atom properties that needs to be updated for
|
||||||
ghost atoms owned by each processor.
|
ghost atoms owned by each processor.
|
||||||
|
|
||||||
The {comm} keyword is simply a short-cut to set the same value
|
The {comm} keyword is simply a short-cut to set the same value
|
||||||
for both the {comm/exchange} and {comm/forward} keywords.
|
for both the {comm/exchange} and {comm/forward} and {comm/reverse} keywords.
|
||||||
|
|
||||||
The value options for all 3 keywords are {no} or {host} or {device}.
|
The value options for all 3 keywords are {no} or {host} or {device}.
|
||||||
A value of {no} means to use the standard non-KOKKOS method of
|
A value of {no} means to use the standard non-KOKKOS method of
|
||||||
|
|||||||
19
doc/src/pair_body_rounded_polygon.txt
Normal file
@ -0,0 +1,19 @@
|
|||||||
|
"LAMMPS WWW Site"_lws - "LAMMPS Documentation"_ld - "LAMMPS Commands"_lc :c
|
||||||
|
|
||||||
|
:link(lws,http://lammps.sandia.gov)
|
||||||
|
:link(ld,Manual.html)
|
||||||
|
:link(lc,Section_commands.html#comm)
|
||||||
|
|
||||||
|
:line
|
||||||
|
|
||||||
|
pair_style body/rounded/polygon command :h3
|
||||||
|
|
||||||
|
[Description:]
|
||||||
|
|
||||||
|
Note: This feature is not yet implemented.
|
||||||
|
|
||||||
|
[Related commands:]
|
||||||
|
|
||||||
|
"pair_style body"_pair_body.html
|
||||||
|
|
||||||
|
[Default:] none
|
||||||
@ -17,6 +17,7 @@ pair_style born/coul/long/omp command :h3
|
|||||||
pair_style born/coul/msm command :h3
|
pair_style born/coul/msm command :h3
|
||||||
pair_style born/coul/msm/omp command :h3
|
pair_style born/coul/msm/omp command :h3
|
||||||
pair_style born/coul/wolf command :h3
|
pair_style born/coul/wolf command :h3
|
||||||
|
pair_style born/coul/wolf/cs command :h3
|
||||||
pair_style born/coul/wolf/gpu command :h3
|
pair_style born/coul/wolf/gpu command :h3
|
||||||
pair_style born/coul/wolf/omp command :h3
|
pair_style born/coul/wolf/omp command :h3
|
||||||
pair_style born/coul/dsf command :h3
|
pair_style born/coul/dsf command :h3
|
||||||
@ -36,7 +37,7 @@ args = list of arguments for a particular style :ul
|
|||||||
{born/coul/msm} args = cutoff (cutoff2)
|
{born/coul/msm} args = cutoff (cutoff2)
|
||||||
cutoff = global cutoff for non-Coulombic (and Coulombic if only 1 arg) (distance units)
|
cutoff = global cutoff for non-Coulombic (and Coulombic if only 1 arg) (distance units)
|
||||||
cutoff2 = global cutoff for Coulombic (optional) (distance units)
|
cutoff2 = global cutoff for Coulombic (optional) (distance units)
|
||||||
{born/coul/wolf} args = alpha cutoff (cutoff2)
|
{born/coul/wolf} or {born/coul/wolf/cs} args = alpha cutoff (cutoff2)
|
||||||
alpha = damping parameter (inverse distance units)
|
alpha = damping parameter (inverse distance units)
|
||||||
cutoff = global cutoff for non-Coulombic (and Coulombic if only 1 arg) (distance units)
|
cutoff = global cutoff for non-Coulombic (and Coulombic if only 1 arg) (distance units)
|
||||||
cutoff2 = global cutoff for Coulombic (optional) (distance units)
|
cutoff2 = global cutoff for Coulombic (optional) (distance units)
|
||||||
@ -65,6 +66,7 @@ pair_coeff 1 1 6.08 0.317 2.340 24.18 11.51 :pre
|
|||||||
|
|
||||||
pair_style born/coul/wolf 0.25 10.0
|
pair_style born/coul/wolf 0.25 10.0
|
||||||
pair_style born/coul/wolf 0.25 10.0 9.0
|
pair_style born/coul/wolf 0.25 10.0 9.0
|
||||||
|
pair_style born/coul/wolf/cs 0.25 10.0 9.0
|
||||||
pair_coeff * * 6.08 0.317 2.340 24.18 11.51
|
pair_coeff * * 6.08 0.317 2.340 24.18 11.51
|
||||||
pair_coeff 1 1 6.08 0.317 2.340 24.18 11.51 :pre
|
pair_coeff 1 1 6.08 0.317 2.340 24.18 11.51 :pre
|
||||||
|
|
||||||
@ -106,8 +108,9 @@ damped shifted force model as in the "coul/dsf"_pair_coul.html style.
|
|||||||
Style {born/coul/long/cs} is identical to {born/coul/long} except that
|
Style {born/coul/long/cs} is identical to {born/coul/long} except that
|
||||||
a term is added for the "core/shell model"_Section_howto.html#howto_25
|
a term is added for the "core/shell model"_Section_howto.html#howto_25
|
||||||
to allow charges on core and shell particles to be separated by r =
|
to allow charges on core and shell particles to be separated by r =
|
||||||
0.0. The same correction is introduced for {born/coul/dsf/cs} style
|
0.0. The same correction is introduced for the {born/coul/dsf/cs}
|
||||||
which is identical to {born/coul/dsf}.
|
style which is identical to {born/coul/dsf}. And likewise for
|
||||||
|
{born/coul/wolf/cs} style which is identical to {born/coul/wolf}.
|
||||||
|
|
||||||
Note that these potentials are related to the "Buckingham
|
Note that these potentials are related to the "Buckingham
|
||||||
potential"_pair_buck.html.
|
potential"_pair_buck.html.
|
||||||
|
|||||||
138
doc/src/pair_buck6d_coul_gauss.txt
Normal file
@ -0,0 +1,138 @@
|
|||||||
|
"LAMMPS WWW Site"_lws - "LAMMPS Documentation"_ld - "LAMMPS Commands"_lc :c
|
||||||
|
|
||||||
|
:link(lws,http://lammps.sandia.gov)
|
||||||
|
:link(ld,Manual.html)
|
||||||
|
:link(lc,Section_commands.html#comm)
|
||||||
|
|
||||||
|
:line
|
||||||
|
|
||||||
|
pair_style buck6d/coul/gauss/dsf :h3
|
||||||
|
pair_style buck6d/coul/gauss/long :h3
|
||||||
|
|
||||||
|
[Syntax:]
|
||||||
|
|
||||||
|
pair_style style args :pre
|
||||||
|
|
||||||
|
style = {buck6d/coul/gauss/dsf} or {buck6d/coul/gauss/long}
|
||||||
|
args = list of arguments for a particular style :ul
|
||||||
|
{buck6d/coul/gauss/dsf} args = smooth cutoff (cutoff2)
|
||||||
|
smooth = smoothing onset within Buckingham cutoff (ratio)
|
||||||
|
cutoff = global cutoff for Buckingham (and Coulombic if only 1 arg) (distance units)
|
||||||
|
cutoff2 = global cutoff for Coulombic (optional) (distance units)
|
||||||
|
{buck6d/coul/gauss/long} args = smooth smooth2 cutoff (cutoff2)
|
||||||
|
smooth = smoothing onset within Buckingham cutoff (ratio)
|
||||||
|
smooth2 = smoothing onset within Coulombic cutoff (ratio)
|
||||||
|
cutoff = global cutoff for Buckingham (and Coulombic if only 1 arg) (distance units)
|
||||||
|
cutoff2 = global cutoff for Coulombic (optional) (distance units) :pre
|
||||||
|
|
||||||
|
[Examples:]
|
||||||
|
|
||||||
|
pair_style buck6d/coul/gauss/dsf 0.9000 12.0000
|
||||||
|
pair_coeff 1 1 1030. 3.061 457.179 4.521 0.608 :pre
|
||||||
|
|
||||||
|
pair_style buck6d/coul/gauss/long 0.9000 1.0000 12.0000
|
||||||
|
pair_coeff 1 1 1030. 3.061 457.179 4.521 0.608 :pre
|
||||||
|
|
||||||
|
[Description:]
|
||||||
|
|
||||||
|
The {buck6d/coul/gauss} styles evaluate vdW and Coulomb
|
||||||
|
interactions following the MOF-FF force field after
|
||||||
|
"(Schmid)"_#Schmid. The vdW term of the {buck6d} styles
|
||||||
|
computes a dispersion damped Buckingham potential:
|
||||||
|
|
||||||
|
:c,image(Eqs/pair_buck6d.jpg)
|
||||||
|
|
||||||
|
where A and C are a force constant, kappa is an ionic-pair dependent
|
||||||
|
reciprocal length parameter, D is a dispersion correction parameter,
|
||||||
|
and the cutoff Rc truncates the interaction distance.
|
||||||
|
The first term in the potential corresponds to the Buckingham
|
||||||
|
repulsion term and the second term to the dispersion attraction with
|
||||||
|
a damping correction analog to the Grimme correction used in DFT.
|
||||||
|
The latter corrects for artifacts occurring at short distances which
|
||||||
|
become an issue for soft vdW potentials.
|
||||||
|
|
||||||
|
The {buck6d} styles include a smoothing function which is invoked
|
||||||
|
according to the global smooting parameter within the specified
|
||||||
|
cutoff. Hereby a parameter of i.e. 0.9 invokes the smoothing
|
||||||
|
within 90% of the cutoff. No smoothing is applied at a value
|
||||||
|
of 1.0. For the {gauss/dsf} style this smoothing is only applicable
|
||||||
|
for the dispersion damped Buckingham potential. For the {gauss/long}
|
||||||
|
styles the smoothing function can also be invoked for the real
|
||||||
|
space coulomb interactions which enforce continous energies and
|
||||||
|
forces at the cutoff.
|
||||||
|
|
||||||
|
Both styles {buck6d/coul/gauss/dsf} and {buck6d/coul/gauss/long}
|
||||||
|
evaluate a Coulomb potential using spherical Gaussian type charge
|
||||||
|
distributions which effectively dampen electrostatic ineractions
|
||||||
|
for high charges at close distances. The electrostatic potential
|
||||||
|
is thus evaluated as:
|
||||||
|
|
||||||
|
:c,image(Eqs/pair_coul_gauss.jpg)
|
||||||
|
|
||||||
|
where C is an energy-conversion constant, Qi and Qj are the
|
||||||
|
charges on the 2 atoms, epsilon is the dielectric constant which
|
||||||
|
can be set by the "dielectric"_dielectric.html command, alpha is
|
||||||
|
ion pair dependent damping parameter and erf() is the error-function.
|
||||||
|
The cutoff Rc truncates the interaction distance.
|
||||||
|
|
||||||
|
The style {buck6d/coul/gauss/dsf} computes the Coulomb interaction
|
||||||
|
via the damped shifted force model described in "(Fennell)"_#Fennell
|
||||||
|
approximating an Ewald sum similar to the "pair coul/dsf"_pair_coul.html
|
||||||
|
styles. In {buck6d/coul/gauss/long} an additional damping factor is
|
||||||
|
applied to the Coulombic term so it can be used in conjunction with the
|
||||||
|
"kspace_style"_kspace_style.html command and its {ewald} or {pppm}
|
||||||
|
options. The Coulombic cutoff in this case separates the real and
|
||||||
|
reciprocal space evaluation of the Ewald sum.
|
||||||
|
|
||||||
|
If one cutoff is specified it is used for both the vdW and Coulomb
|
||||||
|
terms. If two cutoffs are specified, the first is used as the cutoff
|
||||||
|
for the vdW terms, and the second is the cutoff for the Coulombic term.
|
||||||
|
|
||||||
|
The following coefficients must be defined for each pair of atoms
|
||||||
|
types via the "pair_coeff"_pair_coeff.html command as in the examples
|
||||||
|
above, or in the data file or restart files read by the
|
||||||
|
"read_data"_read_data.html or "read_restart"_read_restart.html
|
||||||
|
commands:
|
||||||
|
|
||||||
|
A (energy units)
|
||||||
|
rho (distance^-1 units)
|
||||||
|
C (energy-distance^6 units)
|
||||||
|
D (distance^14 units)
|
||||||
|
alpha (distance^-1 units)
|
||||||
|
cutoff (distance units) :ul
|
||||||
|
|
||||||
|
The second coefficient, rho, must be greater than zero. The latter
|
||||||
|
coefficient is optional. If not specified, the global vdW cutoff
|
||||||
|
is used.
|
||||||
|
|
||||||
|
:line
|
||||||
|
|
||||||
|
[Mixing, shift, table, tail correction, restart, rRESPA info]:
|
||||||
|
|
||||||
|
These pair styles do not support mixing. Thus, coefficients for all
|
||||||
|
I,J pairs must be specified explicitly.
|
||||||
|
|
||||||
|
These styles do not support the "pair_modify"_pair_modify.html shift
|
||||||
|
option for the energy. Instead the smoothing function should be applied
|
||||||
|
by setting the global smoothing parameter to a value < 1.0.
|
||||||
|
|
||||||
|
These styles write their information to "binary restart
|
||||||
|
files"_restart.html, so pair_style and pair_coeff commands do not need
|
||||||
|
to be specified in an input script that reads a restart file.
|
||||||
|
|
||||||
|
[Restrictions:]
|
||||||
|
|
||||||
|
These styles are part of the USER-MOFFF package. They are only enabled
|
||||||
|
if LAMMPS was built with that package. See the
|
||||||
|
"Making LAMMPS"_Section_start.html#start_3 section for more info.
|
||||||
|
|
||||||
|
[Related commands:]
|
||||||
|
|
||||||
|
"pair_coeff"_pair_coeff.html
|
||||||
|
|
||||||
|
[Default:] none
|
||||||
|
|
||||||
|
:link(Schmid)
|
||||||
|
[(Schmid)] S. Bureekaew, S. Amirjalayer, M. Tafipolsky, C. Spickermann, T.K. Roy and R. Schmid, Phys. Status Solidi B, 6, 1128 (2013).
|
||||||
|
:link(Fennell)
|
||||||
|
[(Fennell)] C. J. Fennell, J. D. Gezelter, J Chem Phys, 124, 234104 (2006).
|
||||||