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1206 Commits
patch_22Ju
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patch_9Nov
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71
.github/CODEOWNERS
vendored
@ -16,6 +16,9 @@ src/COMPRESS/* @akohlmey
|
||||
src/GPU/* @ndtrung81
|
||||
src/KOKKOS/* @stanmoore1
|
||||
src/KIM/* @ellio167
|
||||
src/LATTE/* @cnegre
|
||||
src/MESSAGE/* @sjplimp
|
||||
src/SPIN/* @julient31
|
||||
src/USER-CGDNA/* @ohenrich
|
||||
src/USER-CGSDK/* @akohlmey
|
||||
src/USER-COLVARS/* @giacomofiorin
|
||||
@ -27,22 +30,90 @@ src/USER-MOFFF/* @hheenen
|
||||
src/USER-MOLFILE/* @akohlmey
|
||||
src/USER-NETCDF/* @pastewka
|
||||
src/USER-PHONON/* @lingtikong
|
||||
src/USER-PTM/* @pmla
|
||||
src/USER-OMP/* @akohlmey
|
||||
src/USER-QMMM/* @akohlmey
|
||||
src/USER-REAXC/* @hasanmetin
|
||||
src/USER-SCAFACOS/* @rhalver
|
||||
src/USER-TALLY/* @akohlmey
|
||||
src/USER-UEF/* @danicholson
|
||||
src/USER-VTK/* @rbberger
|
||||
|
||||
|
||||
# individual files in packages
|
||||
src/GPU/pair_vashishta_gpu.* @andeplane
|
||||
src/KOKKOS/pair_vashishta_kokkos.* @andeplane
|
||||
src/MANYBODY/pair_vashishta_table.* @andeplane
|
||||
src/MANYBODY/pair_atm.* @sergeylishchuk
|
||||
src/USER-MISC/fix_bond_react.* @jrgissing
|
||||
src/USER-MISC/*_grem.* @dstelter92
|
||||
src/USER-MISC/compute_stress_mop*.* @RomainVermorel
|
||||
|
||||
# core LAMMPS classes
|
||||
src/lammps.* @sjplimp
|
||||
src/pointers.h @sjplimp
|
||||
src/atom.* @sjplimp
|
||||
src/atom_vec.* @sjplimp
|
||||
src/angle.* @sjplimp
|
||||
src/bond.* @sjplimp
|
||||
src/comm*.* @sjplimp
|
||||
src/compute.* @sjplimp
|
||||
src/dihedral.* @sjplimp
|
||||
src/domain.* @sjplimp
|
||||
src/dump*.* @sjplimp
|
||||
src/error.* @sjplimp
|
||||
src/finish.* @sjplimp
|
||||
src/fix.* @sjplimp
|
||||
src/force.* @sjplimp
|
||||
src/group.* @sjplimp
|
||||
src/improper.* @sjplimp
|
||||
src/kspace.* @sjplimp
|
||||
src/lmptyp.h @sjplimp
|
||||
src/library.* @sjplimp
|
||||
src/main.cpp @sjplimp
|
||||
src/memory.* @sjplimp
|
||||
src/modify.* @sjplimp
|
||||
src/molecule.* @sjplimp
|
||||
src/my_page.h @sjplimp
|
||||
src/my_pool_chunk.h @sjplimp
|
||||
src/npair*.* @sjplimp
|
||||
src/ntopo*.* @sjplimp
|
||||
src/nstencil*.* @sjplimp
|
||||
src/neighbor.* @sjplimp
|
||||
src/nbin*.* @sjplimp
|
||||
src/neigh_*.* @sjplimp
|
||||
src/output.* @sjplimp
|
||||
src/pair.* @sjplimp
|
||||
src/rcb.* @sjplimp
|
||||
src/random_*.* @sjplimp
|
||||
src/region*.* @sjplimp
|
||||
src/rcb.* @sjplimp
|
||||
src/read*.* @sjplimp
|
||||
src/rerun.* @sjplimp
|
||||
src/run.* @sjplimp
|
||||
src/respa.* @sjplimp
|
||||
src/set.* @sjplimp
|
||||
src/special.* @sjplimp
|
||||
src/suffix.h @sjplimp
|
||||
src/thermo.* @sjplimp
|
||||
src/universe.* @sjplimp
|
||||
src/update.* @sjplimp
|
||||
src/variable.* @sjplimp
|
||||
src/verlet.* @sjplimp
|
||||
src/velocity.* @sjplimp
|
||||
src/write_data.* @sjplimp
|
||||
src/write_restart.* @sjplimp
|
||||
|
||||
# overrides for specific files
|
||||
src/dump_movie.* @akohlmey
|
||||
src/exceptions.h @rbberger
|
||||
src/fix_nh.* @athomps
|
||||
src/info.* @akohlmey @rbberger
|
||||
src/timer.* @akohlmey
|
||||
|
||||
# tools
|
||||
tools/msi2lmp/* @akohlmey
|
||||
tools/emacs/* @HaoZeke
|
||||
|
||||
# cmake
|
||||
cmake/* @junghans @rbberger
|
||||
|
||||
10
.github/CONTRIBUTING.md
vendored
@ -6,7 +6,7 @@ The following is a set of guidelines as well as explanations of policies and wor
|
||||
|
||||
Thus please also have a look at:
|
||||
* [The Section on submitting new features for inclusion in LAMMPS of the Manual](http://lammps.sandia.gov/doc/Section_modify.html#mod-15)
|
||||
* [The LAMMPS GitHub Tutorial in the Manual](http://lammps.sandia.gov/doc/tutorial_github.html)
|
||||
* [The LAMMPS GitHub Tutorial in the Manual](http://lammps.sandia.gov/doc/Howto_github.html)
|
||||
|
||||
## Table of Contents
|
||||
|
||||
@ -62,7 +62,7 @@ To be able to submit an issue on GitHub, you have to register for an account (fo
|
||||
|
||||
We encourage users to submit new features or modifications for LAMMPS to the core developers so they can be added to the LAMMPS distribution. The preferred way to manage and coordinate this is by submitting a pull request at the LAMMPS project on GitHub. For any larger modifications or programming project, you are encouraged to contact the LAMMPS developers ahead of time, in order to discuss implementation strategies and coding guidelines, that will make it easier to integrate your contribution and result in less work for everybody involved. You are also encouraged to search through the list of open issues on GitHub and submit a new issue for a planned feature, so you would not duplicate the work of others (and possibly get scooped by them) or have your work duplicated by others.
|
||||
|
||||
How quickly your contribution will be integrated depends largely on how much effort it will cause to integrate and test it, how much it requires changes to the core code base, and of how much interest it is to the larger LAMMPS community. Please see below for a checklist of typical requirements. Once you have prepared everything, see [this tutorial](http://lammps.sandia.gov/doc/tutorial_github.html)
|
||||
How quickly your contribution will be integrated depends largely on how much effort it will cause to integrate and test it, how much it requires changes to the core code base, and of how much interest it is to the larger LAMMPS community. Please see below for a checklist of typical requirements. Once you have prepared everything, see [this tutorial](http://lammps.sandia.gov/doc/Howto_github.html)
|
||||
for instructions on how to submit your changes or new files through a GitHub pull request
|
||||
|
||||
Here is a checklist of steps you need to follow to submit a single file or user package for our consideration. Following these steps will save both you and us time. See existing files in packages in the source directory for examples. If you are uncertain, please ask on the lammps-users mailing list.
|
||||
@ -102,11 +102,11 @@ For bug reports, the next step is that one of the core LAMMPS developers will se
|
||||
|
||||
### Pull Requests
|
||||
|
||||
For submitting pull requests, there is a [detailed tutorial](http://lammps.sandia.gov/doc/tutorial_github.html) in the LAMMPS manual. Thus only a brief breakdown of the steps is presented here.
|
||||
For submitting pull requests, there is a [detailed tutorial](http://lammps.sandia.gov/doc/Howto_github.html) in the LAMMPS manual. Thus only a brief breakdown of the steps is presented here. Please note, that the LAMMPS developers are still reviewing and trying to improve the process. If you are unsure about something, do not hesitate to post a question on the lammps-users mailing list or contact one fo the core LAMMPS developers.
|
||||
Immediately after the submission, the LAMMPS continuing integration server at ci.lammps.org will download your submitted branch and perform a simple compilation test, i.e. will test whether your submitted code can be compiled under various conditions. It will also do a check on whether your included documentation translates cleanly. Whether these tests are successful or fail will be recorded. If a test fails, please inspect the corresponding output on the CI server and take the necessary steps, if needed, so that the code can compile cleanly again. The test will be re-run each the pull request is updated with a push to the remote branch on GitHub.
|
||||
Next a LAMMPS core developer will self-assign and do an overall technical assessment of the submission. If you are not yet registered as a LAMMPS collaborator, you will receive an invitation for that.
|
||||
You may also receive comments and suggestions on the overall submission or specific details. If permitted, additional changes may be pushed into your pull request branch or a pull request may be filed in your LAMMPS fork on GitHub to include those changes.
|
||||
The LAMMPS developer may then decide to assign the pull request to another developer (e.g. when that developer is more knowledgeable about the submitted feature or enhancement or has written the modified code). It may also happen, that additional developers are requested to provide a review and approve the changes. For submissions, that may change the general behavior of LAMMPS, or where a possibility of unwanted side effects exists, additional tests may be requested by the assigned developer.
|
||||
If the assigned developer is satisfied and considers the submission ready for inclusion into LAMMPS, the pull request will be assigned to the LAMMPS lead developer, Steve Plimpton (@sjplimp), who will then have the final decision on whether the submission will be included, additional changes are required or it will be ultimately rejected. After the pull request is merged, you may delete the pull request branch in your personal LAMMPS fork.
|
||||
Since the learning curve for git is quite steep for efficiently managing remote repositories, local and remote branches, pull requests and more, do not hesitate to ask questions, if you are not sure about how to do certain steps that are asked of you. Even if the changes asked of you do not make sense to you, they may be important for the LAMMPS developers. Please also note, that these all are guidelines and not set in stone.
|
||||
If the assigned developer is satisfied and considers the submission ready for inclusion into LAMMPS, the pull request will receive approvals and be merged into the master branch by one of the core LAMMPS developers. After the pull request is merged, you may delete the feature branch used for the pull request in your personal LAMMPS fork.
|
||||
Since the learning curve for git is quite steep for efficiently managing remote repositories, local and remote branches, pull requests and more, do not hesitate to ask questions, if you are not sure about how to do certain steps that are asked of you. Even if the changes asked of you do not make sense to you, they may be important for the LAMMPS developers. Please also note, that these all are guidelines and nothing set in stone. So depending on the nature of the contribution, the workflow may be adjusted.
|
||||
|
||||
|
||||
2
.gitignore
vendored
@ -1,6 +1,7 @@
|
||||
*~
|
||||
*.o
|
||||
*.so
|
||||
*.lo
|
||||
*.cu_o
|
||||
*.ptx
|
||||
*_ptx.h
|
||||
@ -32,6 +33,7 @@ log.cite
|
||||
.Trashes
|
||||
ehthumbs.db
|
||||
Thumbs.db
|
||||
.clang-format
|
||||
|
||||
#cmake
|
||||
/build*
|
||||
|
||||
17
README
@ -25,7 +25,7 @@ The LAMMPS distribution includes the following files and directories:
|
||||
README this file
|
||||
LICENSE the GNU General Public License (GPL)
|
||||
bench benchmark problems
|
||||
couple code coupling examples using LAMMPS as a library
|
||||
cmake CMake build system
|
||||
doc documentation
|
||||
examples simple test problems
|
||||
lib libraries LAMMPS can be linked with
|
||||
@ -36,7 +36,14 @@ tools pre- and post-processing tools
|
||||
|
||||
Point your browser at any of these files to get started:
|
||||
|
||||
doc/Manual.html the LAMMPS manual
|
||||
doc/Section_intro.html hi-level introduction to LAMMPS
|
||||
doc/Section_start.html how to build and use LAMMPS
|
||||
doc/Developer.pdf LAMMPS developer guide
|
||||
http://lammps.sandia.gov/doc/Manual.html the LAMMPS manual
|
||||
http://lammps.sandia.gov/doc/Intro.html hi-level introduction
|
||||
http://lammps.sandia.gov/doc/Build.html how to build LAMMPS
|
||||
http://lammps.sandia.gov/doc/Run_head.html how to run LAMMPS
|
||||
http://lammps.sandia.gov/doc/Developer.pdf LAMMPS developer guide
|
||||
|
||||
You can also create these doc pages locally:
|
||||
|
||||
% cd doc
|
||||
% make html # creates HTML pages in doc/html
|
||||
% make pdf # creates Manual.pdf and Developer.pdf
|
||||
|
||||
48
cmake/FindLAMMPS.cmake.in
Normal file
@ -0,0 +1,48 @@
|
||||
# - Find liblammps
|
||||
# Find the native liblammps headers and libraries.
|
||||
#
|
||||
# The following variables will set:
|
||||
# LAMMPS_INCLUDE_DIRS - where to find lammps/library.h, etc.
|
||||
# LAMMPS_LIBRARIES - List of libraries when using lammps.
|
||||
# LAMMPS_API_DEFINES - lammps library api defines
|
||||
# LAMMPS_VERSION - lammps library version
|
||||
# LAMMPS_FOUND - True if liblammps found.
|
||||
#
|
||||
# In addition a LAMMPS::LAMMPS imported target is getting created.
|
||||
#
|
||||
# LAMMPS - Large-scale Atomic/Molecular Massively Parallel Simulator
|
||||
# http://lammps.sandia.gov, Sandia National Laboratories
|
||||
# Steve Plimpton, sjplimp@sandia.gov
|
||||
#
|
||||
# Copyright (2003) Sandia Corporation. Under the terms of Contract
|
||||
# DE-AC04-94AL85000 with Sandia Corporation, the U.S. Government retains
|
||||
# certain rights in this software. This software is distributed under
|
||||
# the GNU General Public License.
|
||||
#
|
||||
# See the README file in the top-level LAMMPS directory.
|
||||
#
|
||||
|
||||
find_package(PkgConfig)
|
||||
|
||||
pkg_check_modules(PC_LAMMPS liblammps@LAMMPS_LIB_SUFFIX@)
|
||||
find_path(LAMMPS_INCLUDE_DIR lammps/library.h HINTS ${PC_LAMMPS_INCLUDE_DIRS} @CMAKE_INSTALL_FULL_INCLUDEDIR@)
|
||||
|
||||
set(LAMMPS_VERSION @LAMMPS_VERSION@)
|
||||
set(LAMMPS_API_DEFINES @LAMMPS_API_DEFINES@)
|
||||
|
||||
find_library(LAMMPS_LIBRARY NAMES lammps@LAMMPS_LIB_SUFFIX@ HINTS ${PC_LAMMPS_LIBRARY_DIRS} @CMAKE_INSTALL_FULL_LIBDIR@)
|
||||
|
||||
set(LAMMPS_INCLUDE_DIRS "${LAMMPS_INCLUDE_DIR}")
|
||||
set(LAMMPS_LIBRARIES "${LAMMPS_LIBRARY}")
|
||||
|
||||
include(FindPackageHandleStandardArgs)
|
||||
# handle the QUIETLY and REQUIRED arguments and set LAMMPS_FOUND to TRUE
|
||||
# if all listed variables are TRUE
|
||||
find_package_handle_standard_args(LAMMPS REQUIRED_VARS LAMMPS_LIBRARY LAMMPS_INCLUDE_DIR VERSION_VAR LAMMPS_VERSION)
|
||||
|
||||
mark_as_advanced(LAMMPS_INCLUDE_DIR LAMMPS_LIBRARY)
|
||||
|
||||
if(LAMMPS_FOUND AND NOT TARGET LAMMPS::LAMMPS)
|
||||
add_library(LAMMPS::LAMMPS UNKNOWN IMPORTED)
|
||||
set_target_properties(LAMMPS::LAMMPS PROPERTIES IMPORTED_LOCATION "${LAMMPS_LIBRARY}" INTERFACE_INCLUDE_DIRECTORIES "${LAMMPS_INCLUDE_DIR}" INTERFACE_COMPILE_DEFINITIONS "${LAMMPS_API_DEFINES}")
|
||||
endif()
|
||||
@ -1,8 +1,8 @@
|
||||
# - Find quip
|
||||
# Find the native QUIP libraries.
|
||||
#
|
||||
# QUIP_LIBRARIES - List of libraries when using fftw3.
|
||||
# QUIP_FOUND - True if fftw3 found.
|
||||
# QUIP_LIBRARIES - List of libraries of the QUIP package
|
||||
# QUIP_FOUND - True if QUIP library was found.
|
||||
#
|
||||
|
||||
find_library(QUIP_LIBRARY NAMES quip)
|
||||
|
||||
46
cmake/Modules/FindTBB.cmake
Normal file
@ -0,0 +1,46 @@
|
||||
# - Find parts of TBB
|
||||
# Find the native TBB headers and libraries.
|
||||
#
|
||||
# TBB_INCLUDE_DIRS - where to find tbb.h, etc.
|
||||
# TBB_LIBRARIES - List of libraries when using tbb.
|
||||
# TBB_FOUND - True if tbb found.
|
||||
#
|
||||
|
||||
########################################################
|
||||
# TBB
|
||||
|
||||
# TODO use more generic FindTBB
|
||||
|
||||
find_path(TBB_INCLUDE_DIR NAMES tbb/tbb.h PATHS $ENV{TBBROOT}/include)
|
||||
find_library(TBB_LIBRARY NAMES tbb PATHS $ENV{TBBROOT}/lib/intel64/gcc4.7
|
||||
$ENV{TBBROOT}/lib/intel64/gcc4.4
|
||||
$ENV{TBBROOT}/lib/intel64/gcc4.1)
|
||||
set(TBB_LIBRARIES ${TBB_LIBRARY})
|
||||
set(TBB_INCLUDE_DIRS ${TBB_INCLUDE_DIR})
|
||||
|
||||
include(FindPackageHandleStandardArgs)
|
||||
# handle the QUIETLY and REQUIRED arguments and set TBB_FOUND to TRUE
|
||||
# if all listed variables are TRUE
|
||||
|
||||
find_package_handle_standard_args(TBB DEFAULT_MSG TBB_LIBRARY TBB_INCLUDE_DIR)
|
||||
|
||||
mark_as_advanced(TBB_INCLUDE_DIR TBB_LIBRARY )
|
||||
|
||||
########################################################
|
||||
# TBB Malloc
|
||||
|
||||
find_path(TBB_MALLOC_INCLUDE_DIR NAMES tbb/tbb.h PATHS $ENV{TBBROOT}/include)
|
||||
find_library(TBB_MALLOC_LIBRARY NAMES tbbmalloc PATHS $ENV{TBBROOT}/lib/intel64/gcc4.7
|
||||
$ENV{TBBROOT}/lib/intel64/gcc4.4
|
||||
$ENV{TBBROOT}/lib/intel64/gcc4.1)
|
||||
|
||||
set(TBB_MALLOC_LIBRARIES ${TBB_MALLOC_LIBRARY})
|
||||
set(TBB_MALLOC_INCLUDE_DIRS ${TBB_MALLOC_INCLUDE_DIR})
|
||||
|
||||
include(FindPackageHandleStandardArgs)
|
||||
# handle the QUIETLY and REQUIRED arguments and set TBB_MALLOC_FOUND to TRUE
|
||||
# if all listed variables are TRUE
|
||||
|
||||
find_package_handle_standard_args(TBB_MALLOC DEFAULT_MSG TBB_MALLOC_LIBRARY TBB_MALLOC_INCLUDE_DIR)
|
||||
|
||||
mark_as_advanced(TBB_MALLOC_INCLUDE_DIR TBB_MALLOC_LIBRARY )
|
||||
8
cmake/Modules/FindZMQ.cmake
Normal file
@ -0,0 +1,8 @@
|
||||
find_path(ZMQ_INCLUDE_DIR zmq.h)
|
||||
find_library(ZMQ_LIBRARY NAMES zmq)
|
||||
|
||||
set(ZMQ_LIBRARIES ${ZMQ_LIBRARY})
|
||||
set(ZMQ_INCLUDE_DIRS ${ZMQ_INCLUDE_DIR})
|
||||
|
||||
include(FindPackageHandleStandardArgs)
|
||||
find_package_handle_standard_args(ZMQ DEFAULT_MSG ZMQ_LIBRARY ZMQ_INCLUDE_DIR)
|
||||
23
cmake/Modules/PreventInSourceBuilds.cmake
Normal file
@ -0,0 +1,23 @@
|
||||
# - Prevent in-source builds.
|
||||
# https://stackoverflow.com/questions/1208681/with-cmake-how-would-you-disable-in-source-builds/
|
||||
|
||||
function(prevent_in_source_builds)
|
||||
# make sure the user doesn't play dirty with symlinks
|
||||
get_filename_component(srcdir "${CMAKE_SOURCE_DIR}" REALPATH)
|
||||
get_filename_component(srcdir2 "${CMAKE_SOURCE_DIR}/.." REALPATH)
|
||||
get_filename_component(srcdir3 "${CMAKE_SOURCE_DIR}/../src" REALPATH)
|
||||
get_filename_component(bindir "${CMAKE_BINARY_DIR}" REALPATH)
|
||||
|
||||
# disallow in-source builds
|
||||
if("${srcdir}" STREQUAL "${bindir}" OR "${srcdir2}" STREQUAL "${bindir}" OR "${srcdir3}" STREQUAL "${bindir}")
|
||||
message(FATAL_ERROR "\
|
||||
|
||||
CMake must not to be run in the source directory. \
|
||||
Rather create a dedicated build directory and run CMake there. \
|
||||
To clean up after this aborted in-place compilation:
|
||||
rm -r CMakeCache.txt CMakeFiles
|
||||
")
|
||||
endif()
|
||||
endfunction()
|
||||
|
||||
prevent_in_source_builds()
|
||||
@ -45,15 +45,16 @@ function(FindStyleHeadersExt path style_class extension headers sources)
|
||||
endfunction(FindStyleHeadersExt)
|
||||
|
||||
function(CreateStyleHeader path filename)
|
||||
math(EXPR N "${ARGC}-2")
|
||||
|
||||
set(temp "")
|
||||
if(N GREATER 0)
|
||||
math(EXPR ARG_END "${ARGC}-1")
|
||||
|
||||
foreach(IDX RANGE 2 ${ARG_END})
|
||||
list(GET ARGV ${IDX} FNAME)
|
||||
if(ARGC GREATER 2)
|
||||
list(REMOVE_AT ARGV 0 1)
|
||||
set(header_list)
|
||||
foreach(FNAME ${ARGV})
|
||||
get_filename_component(FNAME ${FNAME} NAME)
|
||||
list(APPEND header_list ${FNAME})
|
||||
endforeach()
|
||||
list(SORT header_list)
|
||||
foreach(FNAME ${header_list})
|
||||
set(temp "${temp}#include \"${FNAME}\"\n")
|
||||
endforeach()
|
||||
endif()
|
||||
@ -84,19 +85,23 @@ function(RegisterNPairStyle path)
|
||||
AddStyleHeader(${path} NPAIR)
|
||||
endfunction(RegisterNPairStyle)
|
||||
|
||||
function(RegisterFixStyle path)
|
||||
AddStyleHeader(${path} FIX)
|
||||
endfunction(RegisterFixStyle)
|
||||
|
||||
function(RegisterStyles search_path)
|
||||
FindStyleHeaders(${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} BODY_CLASS body_ BODY ) # body ) # atom_vec_body
|
||||
FindStyleHeaders(${search_path} BOND_CLASS bond_ BOND ) # bond ) # force
|
||||
FindStyleHeaders(${search_path} COMMAND_CLASS "" COMMAND ) # command ) # input
|
||||
FindStyleHeaders(${search_path} COMMAND_CLASS "[^.]" COMMAND ) # command ) # input
|
||||
FindStyleHeaders(${search_path} COMPUTE_CLASS compute_ COMPUTE ) # compute ) # modify
|
||||
FindStyleHeaders(${search_path} DIHEDRAL_CLASS dihedral_ DIHEDRAL ) # dihedral ) # force
|
||||
FindStyleHeaders(${search_path} DUMP_CLASS dump_ DUMP ) # dump ) # output write_dump
|
||||
FindStyleHeaders(${search_path} FIX_CLASS fix_ FIX ) # fix ) # modify
|
||||
FindStyleHeaders(${search_path} IMPROPER_CLASS improper_ IMPROPER ) # improper ) # force
|
||||
FindStyleHeaders(${search_path} INTEGRATE_CLASS "" INTEGRATE ) # integrate ) # update
|
||||
FindStyleHeaders(${search_path} KSPACE_CLASS "" KSPACE ) # kspace ) # force
|
||||
FindStyleHeaders(${search_path} INTEGRATE_CLASS "[^.]" INTEGRATE ) # integrate ) # update
|
||||
FindStyleHeaders(${search_path} KSPACE_CLASS "[^.]" KSPACE ) # kspace ) # force
|
||||
FindStyleHeaders(${search_path} MINIMIZE_CLASS min_ MINIMIZE ) # minimize ) # update
|
||||
FindStyleHeaders(${search_path} NBIN_CLASS nbin_ NBIN ) # nbin ) # neighbor
|
||||
FindStyleHeaders(${search_path} NPAIR_CLASS npair_ NPAIR ) # npair ) # neighbor
|
||||
@ -107,35 +112,6 @@ function(RegisterStyles search_path)
|
||||
FindStyleHeaders(${search_path} REGION_CLASS region_ REGION ) # region ) # domain
|
||||
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 ${fname})
|
||||
endfunction(DetectAndRemovePackageHeader)
|
||||
|
||||
function(RegisterStylesExt search_path extension sources)
|
||||
FindStyleHeadersExt(${search_path} ANGLE_CLASS ${extension} ANGLE ${sources})
|
||||
FindStyleHeadersExt(${search_path} ATOM_CLASS ${extension} ATOM_VEC ${sources})
|
||||
@ -181,3 +157,21 @@ function(GenerateStyleHeaders output_path)
|
||||
GenerateStyleHeader(${output_path} READER reader ) # read_dump
|
||||
GenerateStyleHeader(${output_path} REGION region ) # domain
|
||||
endfunction(GenerateStyleHeaders)
|
||||
|
||||
function(DetectBuildSystemConflict lammps_src_dir)
|
||||
if(ARGC GREATER 1)
|
||||
list(REMOVE_AT ARGV 0)
|
||||
foreach(SRC_FILE ${ARGV})
|
||||
get_filename_component(FILENAME ${SRC_FILE} NAME)
|
||||
if(EXISTS ${lammps_src_dir}/${FILENAME})
|
||||
message(FATAL_ERROR "\n########################################################################\n"
|
||||
"Found package(s) installed by the make-based build system\n"
|
||||
"\n"
|
||||
"Please run\n"
|
||||
"make -C ${lammps_src_dir} no-all purge\n"
|
||||
"to uninstall\n"
|
||||
"########################################################################")
|
||||
endif()
|
||||
endforeach()
|
||||
endif()
|
||||
endfunction(DetectBuildSystemConflict)
|
||||
|
||||
196
cmake/README.md
@ -22,6 +22,7 @@ tasks, act as a reference and provide examples of typical use cases.
|
||||
* [Building LAMMPS using cmake](#building-lammps-using-cmake-1)
|
||||
* [Prerequisites](#prerequisites)
|
||||
* [Build directory vs. Source Directory](#build-directory-vs-source-directory)
|
||||
* [Defining and using presets](#defining-and-using-presets)
|
||||
* [Reference](#reference)
|
||||
* [Common CMAKE Configuration Options](#common-cmake-configuration-options)
|
||||
* [LAMMPS Configuration Options](#lammps-configuration-options)
|
||||
@ -61,7 +62,7 @@ should get you started.
|
||||
git clone https://github.com/lammps/lammps.git
|
||||
mkdir lammps/build
|
||||
cd lammps/build
|
||||
cmake ../cmake [-DOPTION_A=VALUE_A -DOPTION_B=VALUE_B ...]
|
||||
cmake [-D OPTION_A=VALUE_A -D OPTION_B=VALUE_B ...] ../cmake
|
||||
make
|
||||
```
|
||||
|
||||
@ -150,6 +151,31 @@ build directory.
|
||||
```
|
||||
make
|
||||
```
|
||||
# Defining and using presets
|
||||
|
||||
The CMake build exposes a lot of different options. In the old build system
|
||||
some of the package selections were possible by using special make target like
|
||||
`make yes-std` or `make no-lib`. Achieving the same result with cmake requires
|
||||
specifying all options manually. This can quickly become a very long command
|
||||
line that is hard to handle. While these could be stored in a simple script
|
||||
file, there is another way of defining "presets" to compile LAMMPS in a certain
|
||||
way.
|
||||
|
||||
A preset is a regular CMake script file that can use constructs such as
|
||||
variables, lists and for-loops to manipulate configuration options and create
|
||||
an [*initial cache*](https://cmake.org/cmake/help/v3.12/manual/cmake.1.html).
|
||||
Options must be set with the `CACHE` and `FORCE` flag to ensure they are
|
||||
considered even during a second cmake run.
|
||||
|
||||
Such a file can then be passed to cmake via the `-C` flag. Several examples of
|
||||
presets can be found in the `cmake/presets` folder.
|
||||
|
||||
```bash
|
||||
# build LAMMPS with all "standard" packages which don't use libraries and enable GPU package
|
||||
mkdir build
|
||||
cd build
|
||||
cmake -C ../cmake/presets/std_nolib.cmake -D PKG_GPU=on ../cmake
|
||||
```
|
||||
|
||||
# Reference
|
||||
|
||||
@ -239,6 +265,26 @@ make
|
||||
</dl>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td><code>BUILD_LIB</code></td>
|
||||
<td>control whether to build LAMMPS as a library</td>
|
||||
<td>
|
||||
<dl>
|
||||
<dt><code>off</code> (default)</dt>
|
||||
<dt><code>on</code></dt>
|
||||
</dl>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td><code>BUILD_EXE</code></td>
|
||||
<td>control whether to build LAMMPS executable</td>
|
||||
<td>
|
||||
<dl>
|
||||
<dt><code>on</code> (default)</dt>
|
||||
<dt><code>off</code></dt>
|
||||
</dl>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td><code>BUILD_SHARED_LIBS</code></td>
|
||||
<td>control whether to build LAMMPS as a shared-library</td>
|
||||
@ -249,6 +295,16 @@ make
|
||||
</dl>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td><code>BUILD_DOC</code></td>
|
||||
<td>control whether to build LAMMPS documentation</td>
|
||||
<td>
|
||||
<dl>
|
||||
<dt><code>off</code> (default)</dt>
|
||||
<dt><code>on</code></dt>
|
||||
</dl>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td><code>LAMMPS_LONGLONG_TO_LONG</code></td>
|
||||
<td>Workaround if your system or MPI version does not recognize <code>long long</code> data types</td>
|
||||
@ -279,8 +335,8 @@ make
|
||||
`mpicxx` in your path and use this MPI implementation.</td>
|
||||
<td>
|
||||
<dl>
|
||||
<dt><code>off</code> (default)</dt>
|
||||
<dt><code>on</code></dt>
|
||||
<dt><code>on</code> (default, if found)</dt>
|
||||
<dt><code>off</code></dt>
|
||||
</dl>
|
||||
</td>
|
||||
</tr>
|
||||
@ -289,8 +345,8 @@ make
|
||||
<td>control whether to build LAMMPS with OpenMP support.</td>
|
||||
<td>
|
||||
<dl>
|
||||
<dt><code>off</code> (default)</dt>
|
||||
<dt><code>on</code></dt>
|
||||
<dt><code>on</code> (default, if found)</dt>
|
||||
<dt><code>off</code></dt>
|
||||
</dl>
|
||||
</td>
|
||||
</tr>
|
||||
@ -374,16 +430,6 @@ make
|
||||
</tr>
|
||||
</thead>
|
||||
<tbody>
|
||||
<tr>
|
||||
<td><code>ENABLE_ALL</code></td>
|
||||
<td>Enable all default packages</td>
|
||||
<td>
|
||||
<dl>
|
||||
<dt><code>off</code> (default)</dt>
|
||||
<dt><code>on</code></dt>
|
||||
</dl>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td><code>PKG_ASPHERE</code></td>
|
||||
<td>Computes, time-integration fixes, and pair styles for aspherical particle models including ellipsoids, 2d lines, and 3d triangles.</td>
|
||||
@ -1245,7 +1291,7 @@ providing the identical features and USER interface.</strong></p>
|
||||
</td>
|
||||
<td>
|
||||
<dl>
|
||||
<dt><code>KISSFFT</code></dt>
|
||||
<dt><code>KISS</code></dt>
|
||||
<dt><code>FFTW3</code></dt>
|
||||
<dt><code>FFTW2</code></dt>
|
||||
<dt><code>MKL</code></dt>
|
||||
@ -1253,13 +1299,13 @@ providing the identical features and USER interface.</strong></p>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td><code>PACK_ARRAY</code></td>
|
||||
<td><code>FFT_PACK</code></td>
|
||||
<td>Optimization for FFT</td>
|
||||
<td>
|
||||
<dl>
|
||||
<dt><code>PACK_ARRAY</code></dt>
|
||||
<dt><code>PACK_POINTER</code></dt>
|
||||
<dt><code>PACK_MEMCPY</code></dt>
|
||||
<dt><code>array (default)</code></dt>
|
||||
<dt><code>pointer</code></dt>
|
||||
<dt><code>memcpy</code></dt>
|
||||
</dl>
|
||||
</td>
|
||||
</tr>
|
||||
@ -1351,6 +1397,29 @@ TODO
|
||||
|
||||
### PYTHON Package
|
||||
|
||||
### USER-INTEL Package
|
||||
|
||||
<table>
|
||||
<thead>
|
||||
<tr>
|
||||
<th>Option</th>
|
||||
<th>Description</th>
|
||||
<th>Values</th>
|
||||
</tr>
|
||||
</thead>
|
||||
<tbody>
|
||||
<tr>
|
||||
<td><code>INTEL_ARCH</code></td>
|
||||
<td>Target architecture for USER-INTEL package</td>
|
||||
<td>
|
||||
<dl>
|
||||
<dt><code>cpu</code> (default)</dt>
|
||||
<dt><code>knl</code></dt>
|
||||
</dl>
|
||||
</td>
|
||||
</tr>
|
||||
</tbody>
|
||||
</table>
|
||||
|
||||
### GPU Package
|
||||
The GPU package builds a support library which can either use OpenCL or CUDA as
|
||||
@ -1370,8 +1439,8 @@ target API.
|
||||
<td>API used by GPU package</td>
|
||||
<td>
|
||||
<dl>
|
||||
<dt><code>OpenCL</code> (default)</dt>
|
||||
<dt><code>CUDA</code></dt>
|
||||
<dt><code>opencl</code> (default)</dt>
|
||||
<dt><code>cuda</code></dt>
|
||||
</dl>
|
||||
</td>
|
||||
</tr>
|
||||
@ -1380,9 +1449,9 @@ target API.
|
||||
<td>Precision size used by GPU package kernels</td>
|
||||
<td>
|
||||
<dl>
|
||||
<dt><code>SINGLE_DOUBLE</code></dt>
|
||||
<dt><code>SINGLE_SINGLE</code></dt>
|
||||
<dt><code>DOUBLE_DOUBLE</code></dt>
|
||||
<dt><code>mixed</code> (default)</dt>
|
||||
<dt><code>single</code></dt>
|
||||
<dt><code>double</code></dt>
|
||||
</dl>
|
||||
</td>
|
||||
</tr>
|
||||
@ -1391,12 +1460,12 @@ target API.
|
||||
<td>Tuning target for OpenCL driver code</td>
|
||||
<td>
|
||||
<dl>
|
||||
<dt><code>GENERIC</code> (default)</dt>
|
||||
<dt><code>INTEL</code> (Intel CPU)</dt>
|
||||
<dt><code>PHI</code> (Intel Xeon Phi)</dt>
|
||||
<dt><code>FERMI</code> (NVIDIA)</dt>
|
||||
<dt><code>KEPLER</code> (NVIDIA)</dt>
|
||||
<dt><code>CYPRESS</code> (AMD)</dt>
|
||||
<dt><code>generic</code> (default)</dt>
|
||||
<dt><code>intel</code> (Intel CPU)</dt>
|
||||
<dt><code>phi</code> (Intel Xeon Phi)</dt>
|
||||
<dt><code>fermi</code> (NVIDIA)</dt>
|
||||
<dt><code>kepler</code> (NVIDIA)</dt>
|
||||
<dt><code>cypress</code> (AMD)</dt>
|
||||
</dl>
|
||||
</td>
|
||||
</tr>
|
||||
@ -1405,11 +1474,11 @@ target API.
|
||||
<td>CUDA SM architecture targeted by GPU package</td>
|
||||
<td>
|
||||
<dl>
|
||||
<dt><code>sm20</code> (Fermi)</dt>
|
||||
<dt><code>sm30</code> (Kepler)</dt>
|
||||
<dt><code>sm50</code> (Maxwell)</dt>
|
||||
<dt><code>sm60</code> (Pascal)</dt>
|
||||
<dt><code>sm70</code> (Volta)</dt>
|
||||
<dt><code>sm_20</code> (Fermi)</dt>
|
||||
<dt><code>sm_30</code> (Kepler)</dt>
|
||||
<dt><code>sm_50</code> (Maxwell)</dt>
|
||||
<dt><code>sm_60</code> (Pascal)</dt>
|
||||
<dt><code>sm_70</code> (Volta)</dt>
|
||||
</dl>
|
||||
</td>
|
||||
</tr>
|
||||
@ -1491,6 +1560,16 @@ Requires a Eigen3 installation
|
||||
</tr>
|
||||
</thead>
|
||||
<tbody>
|
||||
<tr>
|
||||
<td><code>WITH_JPEG</code></td>
|
||||
<td>Enables/Disable JPEG support in LAMMPS</td>
|
||||
<td>
|
||||
<dl>
|
||||
<dt><code>yes</code> (default, if found)</dt>
|
||||
<dt><code>no</code></dt>
|
||||
</dl>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td><code>JPEG_INCLUDE_DIR</code></td>
|
||||
<td></td>
|
||||
@ -1518,6 +1597,16 @@ Requires a Eigen3 installation
|
||||
</tr>
|
||||
</thead>
|
||||
<tbody>
|
||||
<tr>
|
||||
<td><code>WITH_PNG</code></td>
|
||||
<td>Enables/Disable PNG support in LAMMPS</td>
|
||||
<td>
|
||||
<dl>
|
||||
<dt><code>yes</code> (default, if found)</dt>
|
||||
<dt><code>no</code></dt>
|
||||
</dl>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td><code>PNG_INCLUDE_DIR</code></td>
|
||||
<td></td>
|
||||
@ -1546,6 +1635,16 @@ requires `gzip` to be in your `PATH`
|
||||
</tr>
|
||||
</thead>
|
||||
<tbody>
|
||||
<tr>
|
||||
<td><code>WITH_GZIP</code></td>
|
||||
<td>Enables/Disable GZIP support in LAMMPS</td>
|
||||
<td>
|
||||
<dl>
|
||||
<dt><code>yes</code> (default, if found)</dt>
|
||||
<dt><code>no</code></dt>
|
||||
</dl>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td><code>GZIP_EXECUTABLE</code></td>
|
||||
<td></td>
|
||||
@ -1568,6 +1667,16 @@ requires `ffmpeg` to be in your `PATH`
|
||||
</tr>
|
||||
</thead>
|
||||
<tbody>
|
||||
<tr>
|
||||
<td><code>WITH_FFMPEG</code></td>
|
||||
<td>Enables/Disable FFMPEG support in LAMMPS</td>
|
||||
<td>
|
||||
<dl>
|
||||
<dt><code>yes</code> (default, if found)</dt>
|
||||
<dt><code>no</code></dt>
|
||||
</dl>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td><code>FFMPEG_EXECUTABLE</code></td>
|
||||
<td></td>
|
||||
@ -1580,8 +1689,13 @@ requires `ffmpeg` to be in your `PATH`
|
||||
|
||||
## Compilers
|
||||
|
||||
By default, `cmake` will use your environment C/C++/Fortran compilers for a build. It uses the `CC`, `CXX` and `FC` environment variables to detect which compilers should be used. However, these values
|
||||
will be cached after the first run of `cmake`. Subsequent runs of `cmake` will ignore changes in these environment variables. To ensure the correct values are used you avoid the cache by setting the `CMAKE_C_COMPILER`, `CMAKE_CXX_COMPILER`, `CMAKE_Fortran_COMPILER` options directly.
|
||||
By default, `cmake` will use your environment C/C++/Fortran compilers for a
|
||||
build. It uses the `CC`, `CXX` and `FC` environment variables to detect which
|
||||
compilers should be used. However, these values will be cached after the first
|
||||
run of `cmake`. Subsequent runs of `cmake` will ignore changes in these
|
||||
environment variables. To ensure the correct values are used you avoid the
|
||||
cache by setting the `CMAKE_C_COMPILER`, `CMAKE_CXX_COMPILER`,
|
||||
`CMAKE_Fortran_COMPILER` options directly.
|
||||
|
||||
<table>
|
||||
<thead>
|
||||
@ -1617,20 +1731,20 @@ will be cached after the first run of `cmake`. Subsequent runs of `cmake` will i
|
||||
### Building with GNU Compilers
|
||||
|
||||
```bash
|
||||
cmake ../cmake -DCMAKE_C_COMPILER=gcc -DCMAKE_CXX_COMPILER=g++ -DCMAKE_Fortran_COMPILER=gfortran
|
||||
cmake -D CMAKE_C_COMPILER=gcc -D CMAKE_CXX_COMPILER=g++ -D CMAKE_Fortran_COMPILER=gfortran ../cmake
|
||||
```
|
||||
|
||||
### Building with Intel Compilers
|
||||
|
||||
```bash
|
||||
cmake ../cmake -DCMAKE_C_COMPILER=icc -DCMAKE_CXX_COMPILER=icpc -DCMAKE_Fortran_COMPILER=ifort
|
||||
cmake -D CMAKE_C_COMPILER=icc -D CMAKE_CXX_COMPILER=icpc -D CMAKE_Fortran_COMPILER=ifort ../cmake
|
||||
```
|
||||
|
||||
|
||||
### Building with LLVM/Clang Compilers
|
||||
|
||||
```bash
|
||||
cmake ../cmake -DCMAKE_C_COMPILER=clang -DCMAKE_CXX_COMPILER=clang++ -DCMAKE_Fortran_COMPILER=flang
|
||||
cmake -D CMAKE_C_COMPILER=clang -D CMAKE_CXX_COMPILER=clang++ -D CMAKE_Fortran_COMPILER=flang ../cmake
|
||||
```
|
||||
|
||||
|
||||
|
||||
2
cmake/etc/profile.d/lammps.csh.in
Normal file
@ -0,0 +1,2 @@
|
||||
# set environment for LAMMPS executables to find potential files
|
||||
if ( "$?LAMMPS_POTENTIALS" == 0 ) setenv LAMMPS_POTENTIALS @LAMMPS_POTENTIALS_DIR@
|
||||
2
cmake/etc/profile.d/lammps.sh.in
Normal file
@ -0,0 +1,2 @@
|
||||
# set environment for LAMMPS executables to find potential files
|
||||
export LAMMPS_POTENTIALS=${LAMMPS_POTENTIALS-@LAMMPS_POTENTIALS_DIR@}
|
||||
@ -1,18 +1,38 @@
|
||||
# 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,
|
||||
|
||||
# Add the directory where lammps.pc got installed to your PKG_CONFIG_PATH
|
||||
# e.g. export PKG_CONFIG_PATH=@CMAKE_INSTALL_FULL_LIBDIR@/pkgconfig
|
||||
|
||||
prefix=@CMAKE_INSTALL_FULL_PREFIX@
|
||||
# Use this on commandline with:
|
||||
# c++ `pkg-config --cflags --libs lammps` -o myapp myapp.cpp
|
||||
|
||||
# Use this in a Makefile:
|
||||
# myapp: myapp.cpp
|
||||
# $(CC) `pkg-config --cflags --libs lammps` -o $@ $<
|
||||
|
||||
# Use this in autotools:
|
||||
# configure.ac:
|
||||
# PKG_CHECK_MODULES([LAMMPS], [lammps])
|
||||
# Makefile.am:
|
||||
# myapp_CFLAGS = $(LAMMPS_CFLAGS)
|
||||
# myapp_LDADD = $(LAMMPS_LIBS)
|
||||
|
||||
# Use this in CMake:
|
||||
# CMakeLists.txt:
|
||||
# find_package(PkgConfig)
|
||||
# pkg_check_modules(LAMMPS IMPORTED_TARGET lammps)
|
||||
# target_link_libraries(<lib> PkgConfig::LAMMPS)
|
||||
|
||||
prefix=@CMAKE_INSTALL_PREFIX@
|
||||
libdir=@CMAKE_INSTALL_FULL_LIBDIR@
|
||||
includedir=@CMAKE_INSTALL_FULL_INCLUDEDIR@
|
||||
|
||||
Name: liblammps@LAMMPS_MACHINE@
|
||||
Description: Large-scale Atomic/Molecular Massively Parallel Simulator Library
|
||||
URL: http://lammps.sandia.gov
|
||||
Version:
|
||||
Version: @LAMMPS_VERSION@
|
||||
Requires:
|
||||
Libs: -L${libdir} -llammps@LAMMPS_MACHINE@
|
||||
Libs: -L${libdir} -llammps@LAMMPS_LIB_SUFFIX@
|
||||
Libs.private: -lm
|
||||
Cflags: -I${includedir} @LAMMPS_API_DEFINES@
|
||||
|
||||
22
cmake/presets/all_off.cmake
Normal file
@ -0,0 +1,22 @@
|
||||
set(STANDARD_PACKAGES ASPHERE BODY CLASS2 COLLOID COMPRESS CORESHELL DIPOLE GPU
|
||||
GRANULAR KIM KOKKOS KSPACE LATTE MANYBODY MC MEAM MISC
|
||||
MOLECULE MPIIO MSCG OPT PERI POEMS
|
||||
PYTHON QEQ REAX REPLICA RIGID SHOCK SNAP SRD VORONOI)
|
||||
|
||||
set(USER_PACKAGES USER-ATC USER-AWPMD USER-BOCS USER-CGDNA USER-CGSDK USER-COLVARS
|
||||
USER-DIFFRACTION USER-DPD USER-DRUDE USER-EFF USER-FEP USER-H5MD
|
||||
USER-INTEL USER-LB USER-MANIFOLD USER-MEAMC USER-MESO
|
||||
USER-MGPT USER-MISC USER-MOFFF USER-MOLFILE
|
||||
USER-NETCDF USER-OMP USER-PHONON USER-QMMM USER-QTB
|
||||
USER-QUIP USER-REAXC USER-SDPD USER-SMD USER-SMTBQ USER-SPH USER-TALLY
|
||||
USER-UEF USER-VTK)
|
||||
|
||||
set(PACKAGES_WITH_LIB COMPRESS GPU KIM KOKKOS LATTE MEAM MPIIO MSCG POEMS PYTHON REAX VORONOI
|
||||
USER-ATC USER-AWPMD USER-COLVARS USER-H5MD USER-LB USER-MOLFILE
|
||||
USER-NETCDF USER-QMMM USER-QUIP USER-SMD USER-VTK)
|
||||
|
||||
set(ALL_PACKAGES ${STANDARD_PACKAGES} ${USER_PACKAGES})
|
||||
|
||||
foreach(PKG ${ALL_PACKAGES})
|
||||
set(PKG_${PKG} OFF CACHE BOOL "" FORCE)
|
||||
endforeach()
|
||||
22
cmake/presets/all_on.cmake
Normal file
@ -0,0 +1,22 @@
|
||||
set(STANDARD_PACKAGES ASPHERE BODY CLASS2 COLLOID COMPRESS CORESHELL DIPOLE GPU
|
||||
GRANULAR KIM KOKKOS KSPACE LATTE MANYBODY MC MEAM MISC
|
||||
MOLECULE MPIIO MSCG OPT PERI POEMS
|
||||
PYTHON QEQ REAX REPLICA RIGID SHOCK SNAP SRD VORONOI)
|
||||
|
||||
set(USER_PACKAGES USER-ATC USER-AWPMD USER-BOCS USER-CGDNA USER-CGSDK USER-COLVARS
|
||||
USER-DIFFRACTION USER-DPD USER-DRUDE USER-EFF USER-FEP USER-H5MD
|
||||
USER-INTEL USER-LB USER-MANIFOLD USER-MEAMC USER-MESO
|
||||
USER-MGPT USER-MISC USER-MOFFF USER-MOLFILE
|
||||
USER-NETCDF USER-OMP USER-PHONON USER-QMMM USER-QTB
|
||||
USER-QUIP USER-REAXC USER-SDPD USER-SMD USER-SMTBQ USER-SPH USER-TALLY
|
||||
USER-UEF USER-VTK)
|
||||
|
||||
set(PACKAGES_WITH_LIB COMPRESS GPU KIM KOKKOS LATTE MEAM MPIIO MSCG POEMS PYTHON REAX VORONOI
|
||||
USER-ATC USER-AWPMD USER-COLVARS USER-H5MD USER-LB USER-MOLFILE
|
||||
USER-NETCDF USER-QMMM USER-QUIP USER-SMD USER-VTK)
|
||||
|
||||
set(ALL_PACKAGES ${STANDARD_PACKAGES} ${USER_PACKAGES})
|
||||
|
||||
foreach(PKG ${ALL_PACKAGES})
|
||||
set(PKG_${PKG} ON CACHE BOOL "" FORCE)
|
||||
endforeach()
|
||||
70
cmake/presets/manual_selection.cmake
Normal file
@ -0,0 +1,70 @@
|
||||
set(PKG_ASPHERE OFF CACHE BOOL "" FORCE)
|
||||
set(PKG_BODY OFF CACHE BOOL "" FORCE)
|
||||
set(PKG_CLASS2 OFF CACHE BOOL "" FORCE)
|
||||
set(PKG_COLLOID OFF CACHE BOOL "" FORCE)
|
||||
set(PKG_COMPRESS OFF CACHE BOOL "" FORCE)
|
||||
set(PKG_CORESHELL OFF CACHE BOOL "" FORCE)
|
||||
set(PKG_DIPOLE OFF CACHE BOOL "" FORCE)
|
||||
set(PKG_GPU OFF CACHE BOOL "" FORCE)
|
||||
set(PKG_GRANULAR OFF CACHE BOOL "" FORCE)
|
||||
set(PKG_KIM OFF CACHE BOOL "" FORCE)
|
||||
set(PKG_KOKKOS OFF CACHE BOOL "" FORCE)
|
||||
set(PKG_KSPACE OFF CACHE BOOL "" FORCE)
|
||||
set(PKG_LATTE OFF CACHE BOOL "" FORCE)
|
||||
set(PKG_LIB OFF CACHE BOOL "" FORCE)
|
||||
set(PKG_MANYBODY OFF CACHE BOOL "" FORCE)
|
||||
set(PKG_MC OFF CACHE BOOL "" FORCE)
|
||||
set(PKG_MEAM OFF CACHE BOOL "" FORCE)
|
||||
set(PKG_MISC OFF CACHE BOOL "" FORCE)
|
||||
set(PKG_MOLECULE OFF CACHE BOOL "" FORCE)
|
||||
set(PKG_MPIIO OFF CACHE BOOL "" FORCE)
|
||||
set(PKG_MSCG OFF CACHE BOOL "" FORCE)
|
||||
set(PKG_OPT OFF CACHE BOOL "" FORCE)
|
||||
set(PKG_PERI OFF CACHE BOOL "" FORCE)
|
||||
set(PKG_POEMS OFF CACHE BOOL "" FORCE)
|
||||
set(PKG_PYTHOFF OFF CACHE BOOL "" FORCE)
|
||||
set(PKG_QEQ OFF CACHE BOOL "" FORCE)
|
||||
set(PKG_REAX OFF CACHE BOOL "" FORCE)
|
||||
set(PKG_REPLICA OFF CACHE BOOL "" FORCE)
|
||||
set(PKG_RIGID OFF CACHE BOOL "" FORCE)
|
||||
set(PKG_SHOCK OFF CACHE BOOL "" FORCE)
|
||||
set(PKG_SNAP OFF CACHE BOOL "" FORCE)
|
||||
set(PKG_SRD OFF CACHE BOOL "" FORCE)
|
||||
set(PKG_VOROFFOI OFF CACHE BOOL "" FORCE)
|
||||
|
||||
set(PKG_USER OFF CACHE BOOL "" FORCE)
|
||||
set(PKG_USER-ATC OFF CACHE BOOL "" FORCE)
|
||||
set(PKG_USER-AWPMD OFF CACHE BOOL "" FORCE)
|
||||
set(PKG_USER-BOCS OFF CACHE BOOL "" FORCE)
|
||||
set(PKG_USER-CGDNA OFF CACHE BOOL "" FORCE)
|
||||
set(PKG_USER-CGSDK OFF CACHE BOOL "" FORCE)
|
||||
set(PKG_USER-COLVARS OFF CACHE BOOL "" FORCE)
|
||||
set(PKG_USER-DIFFRACTIOFF OFF CACHE BOOL "" FORCE)
|
||||
set(PKG_USER-DPD OFF CACHE BOOL "" FORCE)
|
||||
set(PKG_USER-DRUDE OFF CACHE BOOL "" FORCE)
|
||||
set(PKG_USER-EFF OFF CACHE BOOL "" FORCE)
|
||||
set(PKG_USER-FEP OFF CACHE BOOL "" FORCE)
|
||||
set(PKG_USER-H5MD OFF CACHE BOOL "" FORCE)
|
||||
set(PKG_USER-INTEL OFF CACHE BOOL "" FORCE)
|
||||
set(PKG_USER-LB OFF CACHE BOOL "" FORCE)
|
||||
set(PKG_USER-MANIFOLD OFF CACHE BOOL "" FORCE)
|
||||
set(PKG_USER-MEAMC OFF CACHE BOOL "" FORCE)
|
||||
set(PKG_USER-MESO OFF CACHE BOOL "" FORCE)
|
||||
set(PKG_USER-MGPT OFF CACHE BOOL "" FORCE)
|
||||
set(PKG_USER-MISC OFF CACHE BOOL "" FORCE)
|
||||
set(PKG_USER-MOFFF OFF CACHE BOOL "" FORCE)
|
||||
set(PKG_USER-MOLFILE OFF CACHE BOOL "" FORCE)
|
||||
set(PKG_USER-NETCDF OFF CACHE BOOL "" FORCE)
|
||||
set(PKG_USER-OMP OFF CACHE BOOL "" FORCE)
|
||||
set(PKG_USER-PHOFFOFF OFF CACHE BOOL "" FORCE)
|
||||
set(PKG_USER-QMMM OFF CACHE BOOL "" FORCE)
|
||||
set(PKG_USER-QTB OFF CACHE BOOL "" FORCE)
|
||||
set(PKG_USER-QUIP OFF CACHE BOOL "" FORCE)
|
||||
set(PKG_USER-REAXC OFF CACHE BOOL "" FORCE)
|
||||
set(PKG_USER-SDPD OFF CACHE BOOL "" FORCE)
|
||||
set(PKG_USER-SMD OFF CACHE BOOL "" FORCE)
|
||||
set(PKG_USER-SMTBQ OFF CACHE BOOL "" FORCE)
|
||||
set(PKG_USER-SPH OFF CACHE BOOL "" FORCE)
|
||||
set(PKG_USER-TALLY OFF CACHE BOOL "" FORCE)
|
||||
set(PKG_USER-UEF OFF CACHE BOOL "" FORCE)
|
||||
set(PKG_USER-VTK OFF CACHE BOOL "" FORCE)
|
||||
22
cmake/presets/nolib.cmake
Normal file
@ -0,0 +1,22 @@
|
||||
set(STANDARD_PACKAGES ASPHERE BODY CLASS2 COLLOID COMPRESS CORESHELL DIPOLE GPU
|
||||
GRANULAR KIM KOKKOS KSPACE LATTE MANYBODY MC MEAM MISC
|
||||
MOLECULE MPIIO MSCG OPT PERI POEMS
|
||||
PYTHON QEQ REAX REPLICA RIGID SHOCK SNAP SRD VORONOI)
|
||||
|
||||
set(USER_PACKAGES USER-ATC USER-AWPMD USER-BOCS USER-CGDNA USER-CGSDK USER-COLVARS
|
||||
USER-DIFFRACTION USER-DPD USER-DRUDE USER-EFF USER-FEP USER-H5MD
|
||||
USER-INTEL USER-LB USER-MANIFOLD USER-MEAMC USER-MESO
|
||||
USER-MGPT USER-MISC USER-MOFFF USER-MOLFILE
|
||||
USER-NETCDF USER-OMP USER-PHONON USER-QMMM USER-QTB
|
||||
USER-QUIP USER-REAXC USER-SDPD USER-SMD USER-SMTBQ USER-SPH USER-TALLY
|
||||
USER-UEF USER-VTK)
|
||||
|
||||
set(PACKAGES_WITH_LIB COMPRESS GPU KIM KOKKOS LATTE MEAM MPIIO MSCG POEMS PYTHON REAX VORONOI
|
||||
USER-ATC USER-AWPMD USER-COLVARS USER-H5MD USER-LB USER-MOLFILE
|
||||
USER-NETCDF USER-QMMM USER-QUIP USER-SMD USER-VTK)
|
||||
|
||||
set(ALL_PACKAGES ${STANDARD_PACKAGES} ${USER_PACKAGES})
|
||||
|
||||
foreach(PKG ${PACKAGES_WITH_LIB})
|
||||
set(PKG_${PKG} OFF CACHE BOOL "" FORCE)
|
||||
endforeach()
|
||||
22
cmake/presets/std.cmake
Normal file
@ -0,0 +1,22 @@
|
||||
set(STANDARD_PACKAGES ASPHERE BODY CLASS2 COLLOID COMPRESS CORESHELL DIPOLE GPU
|
||||
GRANULAR KIM KOKKOS KSPACE LATTE MANYBODY MC MEAM MISC
|
||||
MOLECULE MPIIO MSCG OPT PERI POEMS
|
||||
PYTHON QEQ REAX REPLICA RIGID SHOCK SNAP SRD VORONOI)
|
||||
|
||||
set(USER_PACKAGES USER-ATC USER-AWPMD USER-BOCS USER-CGDNA USER-CGSDK USER-COLVARS
|
||||
USER-DIFFRACTION USER-DPD USER-DRUDE USER-EFF USER-FEP USER-H5MD
|
||||
USER-INTEL USER-LB USER-MANIFOLD USER-MEAMC USER-MESO
|
||||
USER-MGPT USER-MISC USER-MOFFF USER-MOLFILE
|
||||
USER-NETCDF USER-OMP USER-PHONON USER-QMMM USER-QTB
|
||||
USER-QUIP USER-REAXC USER-SDPD USER-SMD USER-SMTBQ USER-SPH USER-TALLY
|
||||
USER-UEF USER-VTK)
|
||||
|
||||
set(PACKAGES_WITH_LIB COMPRESS GPU KIM KOKKOS LATTE MEAM MPIIO MSCG POEMS PYTHON REAX VORONOI
|
||||
USER-ATC USER-AWPMD USER-COLVARS USER-H5MD USER-LB USER-MOLFILE
|
||||
USER-NETCDF USER-QMMM USER-QUIP USER-SMD USER-VTK)
|
||||
|
||||
set(ALL_PACKAGES ${STANDARD_PACKAGES} ${USER_PACKAGES})
|
||||
|
||||
foreach(PKG ${STANDARD_PACKAGES})
|
||||
set(PKG_${PKG} ON CACHE BOOL "" FORCE)
|
||||
endforeach()
|
||||
26
cmake/presets/std_nolib.cmake
Normal file
@ -0,0 +1,26 @@
|
||||
set(STANDARD_PACKAGES ASPHERE BODY CLASS2 COLLOID COMPRESS CORESHELL DIPOLE GPU
|
||||
GRANULAR KIM KOKKOS KSPACE LATTE MANYBODY MC MEAM MISC
|
||||
MOLECULE MPIIO MSCG OPT PERI POEMS
|
||||
PYTHON QEQ REAX REPLICA RIGID SHOCK SNAP SRD VORONOI)
|
||||
|
||||
set(USER_PACKAGES USER-ATC USER-AWPMD USER-BOCS USER-CGDNA USER-CGSDK USER-COLVARS
|
||||
USER-DIFFRACTION USER-DPD USER-DRUDE USER-EFF USER-FEP USER-H5MD
|
||||
USER-INTEL USER-LB USER-MANIFOLD USER-MEAMC USER-MESO
|
||||
USER-MGPT USER-MISC USER-MOFFF USER-MOLFILE
|
||||
USER-NETCDF USER-OMP USER-PHONON USER-QMMM USER-QTB
|
||||
USER-QUIP USER-REAXC USER-SDPD USER-SMD USER-SMTBQ USER-SPH USER-TALLY
|
||||
USER-UEF USER-VTK)
|
||||
|
||||
set(PACKAGES_WITH_LIB COMPRESS GPU KIM KOKKOS LATTE MEAM MPIIO MSCG POEMS PYTHON REAX VORONOI
|
||||
USER-ATC USER-AWPMD USER-COLVARS USER-H5MD USER-LB USER-MOLFILE
|
||||
USER-NETCDF USER-QMMM USER-QUIP USER-SMD USER-VTK)
|
||||
|
||||
set(ALL_PACKAGES ${STANDARD_PACKAGES} ${USER_PACKAGES})
|
||||
|
||||
foreach(PKG ${STANDARD_PACKAGES})
|
||||
set(PKG_${PKG} ON CACHE BOOL "" FORCE)
|
||||
endforeach()
|
||||
|
||||
foreach(PKG ${PACKAGES_WITH_LIB})
|
||||
set(PKG_${PKG} OFF CACHE BOOL "" FORCE)
|
||||
endforeach()
|
||||
22
cmake/presets/user.cmake
Normal file
@ -0,0 +1,22 @@
|
||||
set(STANDARD_PACKAGES ASPHERE BODY CLASS2 COLLOID COMPRESS CORESHELL DIPOLE GPU
|
||||
GRANULAR KIM KOKKOS KSPACE LATTE MANYBODY MC MEAM MISC
|
||||
MOLECULE MPIIO MSCG OPT PERI POEMS
|
||||
PYTHON QEQ REAX REPLICA RIGID SHOCK SNAP SRD VORONOI)
|
||||
|
||||
set(USER_PACKAGES USER-ATC USER-AWPMD USER-BOCS USER-CGDNA USER-CGSDK USER-COLVARS
|
||||
USER-DIFFRACTION USER-DPD USER-DRUDE USER-EFF USER-FEP USER-H5MD
|
||||
USER-INTEL USER-LB USER-MANIFOLD USER-MEAMC USER-MESO
|
||||
USER-MGPT USER-MISC USER-MOFFF USER-MOLFILE
|
||||
USER-NETCDF USER-OMP USER-PHONON USER-QMMM USER-QTB
|
||||
USER-QUIP USER-REAXC USER-SDPD USER-SMD USER-SMTBQ USER-SPH USER-TALLY
|
||||
USER-UEF USER-VTK)
|
||||
|
||||
set(PACKAGES_WITH_LIB COMPRESS GPU KIM KOKKOS LATTE MEAM MPIIO MSCG POEMS PYTHON REAX VORONOI
|
||||
USER-ATC USER-AWPMD USER-COLVARS USER-H5MD USER-LB USER-MOLFILE
|
||||
USER-NETCDF USER-QMMM USER-QUIP USER-SMD USER-VTK)
|
||||
|
||||
set(ALL_PACKAGES ${STANDARD_PACKAGES} ${USER_PACKAGES})
|
||||
|
||||
foreach(PKG ${USER_PACKAGES})
|
||||
set(PKG_${PKG} ON CACHE BOOL "" FORCE)
|
||||
endforeach()
|
||||
36
doc/Makefile
@ -31,17 +31,19 @@ SPHINXEXTRA = -j $(shell $(PYTHON) -c 'import multiprocessing;print(multiprocess
|
||||
SOURCES=$(filter-out $(wildcard src/lammps_commands*.txt) src/lammps_support.txt src/lammps_tutorials.txt,$(wildcard src/*.txt))
|
||||
OBJECTS=$(SOURCES:src/%.txt=$(RSTDIR)/%.rst)
|
||||
|
||||
.PHONY: help clean-all clean epub html pdf old venv spelling anchor_check
|
||||
.PHONY: help clean-all clean epub mobi html pdf old venv spelling anchor_check
|
||||
|
||||
# ------------------------------------------
|
||||
|
||||
help:
|
||||
@echo "Please use \`make <target>' where <target> is one of"
|
||||
@echo " html create HTML doc pages in html dir"
|
||||
@echo " pdf create Manual.pdf and Developer.pdf in this dir"
|
||||
@echo " pdf create Developer.pdf and Manual.pdf in this dir"
|
||||
@echo " old create old-style HTML doc pages in old dir"
|
||||
@echo " fetch fetch HTML and PDF files from LAMMPS web site"
|
||||
@echo " epub create ePUB format manual for e-book readers"
|
||||
@echo " mobi convert ePUB to MOBI format manual for e-book readers (e.g. Kindle)"
|
||||
@echo " (requires ebook-convert tool from calibre)"
|
||||
@echo " clean remove all intermediate RST files"
|
||||
@echo " clean-all reset the entire build environment"
|
||||
@echo " txt2html build txt2html tool"
|
||||
@ -49,11 +51,11 @@ help:
|
||||
|
||||
# ------------------------------------------
|
||||
|
||||
clean-all:
|
||||
clean-all: clean
|
||||
rm -rf $(BUILDDIR)/* utils/txt2html/txt2html.exe
|
||||
|
||||
clean:
|
||||
rm -rf $(RSTDIR) html
|
||||
rm -rf $(RSTDIR) html old epub
|
||||
rm -rf spelling
|
||||
|
||||
clean-spelling:
|
||||
@ -93,9 +95,10 @@ spelling: $(OBJECTS) utils/sphinx-config/false_positives.txt
|
||||
@echo "Spell check finished."
|
||||
|
||||
epub: $(OBJECTS)
|
||||
@mkdir -p epub
|
||||
@mkdir -p epub/JPG
|
||||
@rm -f LAMMPS.epub
|
||||
@cp src/JPG/lammps-logo.png epub/
|
||||
@cp src/JPG/*.* epub/JPG
|
||||
@(\
|
||||
. $(VENV)/bin/activate ;\
|
||||
cp -r src/* $(RSTDIR)/ ;\
|
||||
@ -106,20 +109,25 @@ epub: $(OBJECTS)
|
||||
@rm -rf epub
|
||||
@echo "Build finished. The ePUB manual file is created."
|
||||
|
||||
mobi: epub
|
||||
@rm -f LAMMPS.mobi
|
||||
@ebook-convert LAMMPS.epub LAMMPS.mobi
|
||||
@echo "Conversion finished. The MOBI manual file is created."
|
||||
|
||||
pdf: utils/txt2html/txt2html.exe
|
||||
@(\
|
||||
set -e; \
|
||||
cd src; \
|
||||
../utils/txt2html/txt2html.exe -b *.txt; \
|
||||
htmldoc --batch lammps.book; \
|
||||
for s in `echo *.txt | sed -e 's,\.txt,\.html,g'` ; \
|
||||
do grep -q $$s lammps.book || \
|
||||
echo doc file $$s missing in src/lammps.book; done; \
|
||||
rm *.html; \
|
||||
cd Developer; \
|
||||
cd src/Developer; \
|
||||
pdflatex developer; \
|
||||
pdflatex developer; \
|
||||
mv developer.pdf ../../Developer.pdf; \
|
||||
cd ..; \
|
||||
../utils/txt2html/txt2html.exe -b *.txt; \
|
||||
htmldoc --batch lammps.book; \
|
||||
for s in `echo *.txt | sed -e 's/ \(pairs\|bonds\|angles\|dihedrals\|impropers\|commands_list\|fixes\|computes\).txt/ /g' | sed -e 's,\.txt,\.html,g'` ; \
|
||||
do grep -q ^$$s lammps.book || \
|
||||
echo WARNING: doc file $$s missing in src/lammps.book; done; \
|
||||
rm *.html; \
|
||||
)
|
||||
|
||||
old: utils/txt2html/txt2html.exe
|
||||
@ -157,7 +165,7 @@ $(RSTDIR)/%.rst : src/%.txt $(TXT2RST)
|
||||
@(\
|
||||
mkdir -p $(RSTDIR) ; \
|
||||
. $(VENV)/bin/activate ;\
|
||||
txt2rst $< > $@ ;\
|
||||
txt2rst -v $< > $@ ;\
|
||||
deactivate ;\
|
||||
)
|
||||
|
||||
|
||||
45
doc/lammps.1
Normal file
@ -0,0 +1,45 @@
|
||||
.TH LAMMPS "2018-08-22"
|
||||
.SH NAME
|
||||
.B LAMMPS
|
||||
\- Molecular Dynamics Simulator.
|
||||
|
||||
.SH SYNOPSIS
|
||||
.B lmp
|
||||
-in in.file
|
||||
|
||||
or
|
||||
|
||||
mpirun \-np 2
|
||||
.B lmp
|
||||
-in in.file
|
||||
|
||||
.SH DESCRIPTION
|
||||
.B LAMMPS
|
||||
LAMMPS is a classical molecular dynamics code, and an acronym for Large-scale
|
||||
Atomic/Molecular Massively Parallel Simulator. LAMMPS has potentials for soft
|
||||
materials (biomolecules, polymers) and solid-state materials (metals,
|
||||
semiconductors) and coarse-grained or mesoscopic systems. It can be used to
|
||||
model atoms or, more generically, as a parallel particle simulator at the
|
||||
atomic, meso, or continuum scale.
|
||||
|
||||
See http://lammps.sandia.gov/ for documentation.
|
||||
|
||||
.SH OPTIONS
|
||||
See https://lammps.sandia.gov/doc/Run_options.html for details on
|
||||
command-line options.
|
||||
|
||||
.SH COPYRIGHT
|
||||
© 2003--2018 Sandia Corporation
|
||||
|
||||
This package is free software; you can redistribute it and/or modify
|
||||
it under the terms of the GNU General Public License as published by
|
||||
the Free Software Foundation; either version 2 of the License, or
|
||||
(at your option) any later version.
|
||||
|
||||
This package is distributed in the hope that it will be useful,
|
||||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
GNU General Public License for more details.
|
||||
|
||||
On Debian systems, the complete text of the GNU General
|
||||
Public License can be found in `/usr/share/common-licenses/GPL-2'.
|
||||
49
doc/src/Build.txt
Normal file
@ -0,0 +1,49 @@
|
||||
"Previous Section"_Install.html - "LAMMPS WWW Site"_lws - "LAMMPS
|
||||
Documentation"_ld - "LAMMPS Commands"_lc - "Next Section"_Run_head.html :c
|
||||
|
||||
:link(lws,http://lammps.sandia.gov)
|
||||
:link(ld,Manual.html)
|
||||
:link(lc,Commands_all.html)
|
||||
|
||||
:line
|
||||
|
||||
Build LAMMPS :h2
|
||||
|
||||
LAMMPS can be built as an executable or library from source code via
|
||||
either traditional makefiles (which may require manual editing)
|
||||
for use with GNU make or gmake, or a build environment generated by CMake
|
||||
(Unix Makefiles, Xcode, Visual Studio, KDevelop or more). As an
|
||||
alternative you can download a package with pre-built executables
|
||||
as described on the "Install"_Install.html doc page.
|
||||
|
||||
<!-- RST
|
||||
|
||||
.. toctree::
|
||||
:maxdepth: 1
|
||||
|
||||
Build_cmake
|
||||
Build_make
|
||||
Build_link
|
||||
Build_basics
|
||||
Build_settings
|
||||
Build_package
|
||||
Build_extras
|
||||
Build_windows
|
||||
|
||||
END_RST -->
|
||||
|
||||
<!-- HTML_ONLY -->
|
||||
|
||||
"Build LAMMPS with CMake"_Build_cmake.html
|
||||
"Build LAMMPS with make"_Build_make.html
|
||||
"Link LAMMPS as a library to another code"_Build_link.html
|
||||
"Basic build options"_Build_basics.html
|
||||
"Optional build settings"_Build_settings.html
|
||||
"Include packages in build"_Build_package.html
|
||||
"Packages with extra build options"_Build_extras.html
|
||||
"Notes for building LAMMPS on Windows"_Build_windows.html :all(b)
|
||||
|
||||
If you have problems building LAMMPS, it is often due to software
|
||||
issues on your local machine. If you can, find a local expert to
|
||||
help. If you're still stuck, send an email to the "LAMMPS mail
|
||||
list"_http://lammps.sandia.gov/mail.html.
|
||||
319
doc/src/Build_basics.txt
Normal file
@ -0,0 +1,319 @@
|
||||
"Higher level section"_Build.html - "LAMMPS WWW Site"_lws - "LAMMPS
|
||||
Documentation"_ld - "LAMMPS Commands"_lc :c
|
||||
|
||||
:link(lws,http://lammps.sandia.gov)
|
||||
:link(ld,Manual.html)
|
||||
:link(lc,Commands_all.html)
|
||||
|
||||
:line
|
||||
|
||||
Basic build options :h3
|
||||
|
||||
The following topics are covered on this page, for building both with
|
||||
CMake and make:
|
||||
|
||||
"Serial vs parallel build"_#serial
|
||||
"Choice of compiler and compile/link options"_#compile
|
||||
"Build LAMMPS as an executable or a library"_#exe
|
||||
"Build the LAMMPS documentation"_#doc
|
||||
"Install LAMMPS after a build"_#install :ul
|
||||
|
||||
:line
|
||||
|
||||
Serial vs parallel build :h4,link(serial)
|
||||
|
||||
LAMMPS can be built to run in parallel using the ubiquitous "MPI
|
||||
(message-passing
|
||||
interface)"_https://en.wikipedia.org/wiki/Message_Passing_Interface
|
||||
library. Or it can built to run on a single processor (serial)
|
||||
without MPI. It can also be built with support for OpenMP threading
|
||||
(see more discussion below).
|
||||
|
||||
[CMake variables]:
|
||||
|
||||
-D BUILD_MPI=value # yes or no, default is yes if CMake finds MPI, else no
|
||||
-D BUILD_OMP=value # yes or no (default)
|
||||
-D LAMMPS_MACHINE=name # name = mpi, serial, mybox, titan, laptop, etc
|
||||
# no default value :pre
|
||||
|
||||
The executable created by CMake (after running make) is lmp_name. If
|
||||
the LAMMPS_MACHINE variable is not specified, the executable is just
|
||||
lmp. Using BUILD_MPI=no will produce a serial executable.
|
||||
|
||||
[Traditional make]:
|
||||
|
||||
cd lammps/src
|
||||
make mpi # parallel build, produces lmp_mpi using Makefile.mpi
|
||||
make serial # serial build, produces lmp_serial using Makefile/serial
|
||||
make mybox :pre # uses Makefile.mybox to produce lmp_mybox :pre
|
||||
|
||||
Serial build (see src/MAKE/Makefile.serial):
|
||||
|
||||
MPI_INC = -I../STUBS
|
||||
MPI_PATH = -L../STUBS
|
||||
MPI_LIB = -lmpi_stubs :pre
|
||||
|
||||
For a parallel build, if MPI is installed on your system in the usual
|
||||
place (e.g. under /usr/local), you do not need to specify the 3
|
||||
variables MPI_INC, MPI_PATH, MPI_LIB. The MPI wrapper on the compiler
|
||||
(e.g. mpicxx, mpiCC) knows where to find the needed include and
|
||||
library files. Failing this, these 3 variables can be used to specify
|
||||
where the mpi.h file (MPI_INC), and the MPI library files (MPI_PATH)
|
||||
are found, and the name of the library files (MPI_LIB).
|
||||
|
||||
For a serial build, you need to specify the 3 variables, as shown
|
||||
above.
|
||||
|
||||
For a serial LAMMPS build, use the dummy MPI library provided in
|
||||
src/STUBS. You also need to build the STUBS library for your platform
|
||||
before making LAMMPS itself. A "make serial" build does this for.
|
||||
Otherwise, type "make mpi-stubs" from the src directory, or "make"
|
||||
from the src/STUBS dir. If the build fails, you will need to edit the
|
||||
STUBS/Makefile for your platform.
|
||||
|
||||
The file STUBS/mpi.c provides a CPU timer function called MPI_Wtime()
|
||||
that calls gettimeofday() . If your system doesn't support
|
||||
gettimeofday() , you'll need to insert code to call another timer.
|
||||
Note that the ANSI-standard function clock() rolls over after an hour
|
||||
or so, and is therefore insufficient for timing long LAMMPS
|
||||
simulations.
|
||||
|
||||
[CMake and make info]:
|
||||
|
||||
If you are installing MPI yourself, we recommend MPICH2 from Argonne
|
||||
National Laboratory or OpenMPI. MPICH can be downloaded from the
|
||||
"Argonne MPI site"_http://www.mcs.anl.gov/research/projects/mpich2/.
|
||||
OpenMPI can be downloaded from the "OpenMPI
|
||||
site"_http://www.open-mpi.org. Other MPI packages should also work.
|
||||
If you are running on a large parallel machine, your system admins or
|
||||
the vendor should have already installed a version of MPI, which is
|
||||
likely to be faster than a self-installed MPICH or OpenMPI, so find
|
||||
out how to build and link with it.
|
||||
|
||||
The majority of OpenMP (threading) support in LAMMPS is provided by
|
||||
the USER-OMP package; see the "Speed omp"_Speed_omp.html doc page for
|
||||
details. The USER-INTEL package also provides OpenMP support (it is
|
||||
compatible with USER-OMP) and adds vectorization support when compiled
|
||||
with the Intel compilers on top of that. Also, the KOKKOS package can
|
||||
be compiled for using OpenMP threading.
|
||||
|
||||
However, there are a few commands in LAMMPS that have native OpenMP
|
||||
support. These are commands in the MPIIO, SNAP, USER-DIFFRACTION, and
|
||||
USER-DPD packages. In addition some packages support OpenMP threading
|
||||
indirectly through the libraries they interface to: e.g. LATTE and
|
||||
USER-COLVARS. See the "Packages details"_Packages_details.html doc
|
||||
page for more info on these packages and the doc pages for their
|
||||
respective commands for OpenMP threading info.
|
||||
|
||||
For CMake, if you use BUILD_OMP=yes, you can use these packages and
|
||||
turn on their native OpenMP support and turn on their native OpenMP
|
||||
support at run time, by setting the OMP_NUM_THREADS environment
|
||||
variable before you launch LAMMPS.
|
||||
|
||||
For building via conventional make, the CCFLAGS and LINKFLAGS
|
||||
variables in Makefile.machine need to include the compiler flag that
|
||||
enables OpenMP. For GNU compilers it is -fopenmp. For (recent) Intel
|
||||
compilers it is -qopenmp. If you are using a different compiler,
|
||||
please refer to its documentation.
|
||||
|
||||
:line
|
||||
|
||||
Choice of compiler and compile/link options :h4,link(compile)
|
||||
|
||||
The choice of compiler and compiler flags can be important for
|
||||
performance. Vendor compilers can produce faster code than
|
||||
open-source compilers like GNU. On boxes with Intel CPUs, we suggest
|
||||
trying the "Intel C++ compiler"_intel.
|
||||
|
||||
:link(intel,https://software.intel.com/en-us/intel-compilers)
|
||||
|
||||
On parallel clusters or supercomputers which use "modules" for their
|
||||
compile/link environments, you can often access different compilers by
|
||||
simply loading the appropriate module before building LAMMPS.
|
||||
|
||||
[CMake variables]:
|
||||
|
||||
-D CMAKE_CXX_COMPILER=name # name of C++ compiler
|
||||
-D CMAKE_C_COMPILER=name # name of C compiler
|
||||
-D CMAKE_Fortran_COMPILER=name # name of Fortran compiler :pre
|
||||
|
||||
-D CMAKE_CXX_FlAGS=string # flags to use with C++ compiler
|
||||
-D CMAKE_C_FlAGS=string # flags to use with C compiler
|
||||
-D CMAKE_Fortran_FlAGS=string # flags to use with Fortran compiler :pre
|
||||
|
||||
By default CMake will use a compiler it finds and it will add
|
||||
optimization flags appropriate to that compiler and any "accelerator
|
||||
packages"_Speed_packages.html you have included in the build.
|
||||
|
||||
You can tell CMake to look for a specific compiler with these variable
|
||||
settings. Likewise you can specify the FLAGS variables if you want to
|
||||
experiment with alternate optimization flags. You should specify all
|
||||
3 compilers, so that the small number of LAMMPS source files written
|
||||
in C or Fortran are built with a compiler consistent with the one used
|
||||
for all the C++ files:
|
||||
|
||||
Building with GNU Compilers:
|
||||
cmake ../cmake -DCMAKE_C_COMPILER=gcc -DCMAKE_CXX_COMPILER=g++ -DCMAKE_Fortran_COMPILER=gfortran
|
||||
Building with Intel Compilers:
|
||||
cmake ../cmake -DCMAKE_C_COMPILER=icc -DCMAKE_CXX_COMPILER=icpc -DCMAKE_Fortran_COMPILER=ifort
|
||||
Building with LLVM/Clang Compilers:
|
||||
cmake ../cmake -DCMAKE_C_COMPILER=clang -DCMAKE_CXX_COMPILER=clang++ -DCMAKE_Fortran_COMPILER=flang :pre
|
||||
|
||||
NOTE: When the cmake command completes, it prints info to the screen
|
||||
as to which compilers it is using, and what flags will be used in the
|
||||
compilation. Note that if the top-level compiler is mpicxx, it is
|
||||
simply a wrapper on a real compiler. The underlying compiler info is
|
||||
what will be listed in the CMake output. You should check to insure
|
||||
you are using the compiler and optimization flags are the ones you
|
||||
want.
|
||||
|
||||
[Makefile.machine settings]:
|
||||
|
||||
Parallel build (see src/MAKE/Makefile.mpi):
|
||||
|
||||
CC = mpicxx
|
||||
CCFLAGS = -g -O3
|
||||
LINK = mpicxx
|
||||
LINKFLAGS = -g -O :pre
|
||||
|
||||
Serial build (see src/MAKE/Makefile.serial):
|
||||
|
||||
CC = g++
|
||||
CCFLAGS = -g -O3
|
||||
LINK = g++
|
||||
LINKFLAGS = -g -O :pre
|
||||
|
||||
The "compiler/linker settings" section of a Makefile.machine lists
|
||||
compiler and linker settings for your C++ compiler, including
|
||||
optimization flags. You should always use mpicxx or mpiCC for
|
||||
a parallel build, since these compiler wrappers will include
|
||||
a variety of settings appropriate for your MPI installation.
|
||||
|
||||
NOTE: If you build LAMMPS with any "accelerator
|
||||
packages"_Speed_packages.html included, they have specific
|
||||
optimization flags that are either required or recommended for optimal
|
||||
performance. You need to include these in the CCFLAGS and LINKFLAGS
|
||||
settings above. For details, see the individual package doc pages
|
||||
listed on the "Speed packages"_Speed_packages.html doc page. Or
|
||||
examine these files in the src/MAKE/OPTIONS directory. They
|
||||
correspond to each of the 5 accelerator packages and their hardware
|
||||
variants:
|
||||
|
||||
Makefile.opt # OPT package
|
||||
Makefile.omp # USER-OMP package
|
||||
Makefile.intel_cpu # USER-INTEL package for CPUs
|
||||
Makefile.intel_coprocessor # USER-INTEL package for KNLs
|
||||
Makefile.gpu # GPU package
|
||||
Makefile.kokkos_cuda_mpi # KOKKOS package for GPUs
|
||||
Makefile.kokkos_omp # KOKKOS package for CPUs (OpenMP)
|
||||
Makefile.kokkos_phi # KOKKOS package for KNLs (OpenMP) :pre
|
||||
|
||||
:line
|
||||
|
||||
Build LAMMPS as an executable or a library :h4,link(exe)
|
||||
|
||||
LAMMPS can be built as either an executable or as a static or shared
|
||||
library. The LAMMPS library can be called from another application or
|
||||
a scripting language. See the "Howto couple"_Howto_couple.html doc
|
||||
page for more info on coupling LAMMPS to other codes. See the
|
||||
"Python"_Python_head.html doc page for more info on wrapping and
|
||||
running LAMMPS from Python via its library interface.
|
||||
|
||||
[CMake variables]:
|
||||
|
||||
-D BUILD_EXE=value # yes (default) or no
|
||||
-D BUILD_LIB=value # yes or no (default)
|
||||
-D BUILD_SHARED_LIBS=value # yes or no (default) :pre
|
||||
|
||||
Setting BUILD_EXE=no will not produce an executable. Setting
|
||||
BUILD_LIB=yes will produce a static library named liblammps.a.
|
||||
Setting both BUILD_LIB=yes and BUILD_SHARED_LIBS=yes will produce a
|
||||
shared library named liblammps.so.
|
||||
|
||||
[Traditional make]:
|
||||
|
||||
cd lammps/src
|
||||
make machine # build LAMMPS executable lmp_machine
|
||||
make mode=lib machine # build LAMMPS static lib liblammps_machine.a
|
||||
make mode=shlib machine # build LAMMPS shared lib liblammps_machine.so :pre
|
||||
|
||||
The two library builds also create generic soft links, named
|
||||
liblammps.a and liblammps.so, which point to the liblammps_machine
|
||||
files.
|
||||
|
||||
[CMake and make info]:
|
||||
|
||||
Note that for a shared library to be usable by a calling program, all
|
||||
the auxiliary libraries it depends on must also exist as shared
|
||||
libraries. This will be the case for libraries included with LAMMPS,
|
||||
such as the dummy MPI library in src/STUBS or any package libraries in
|
||||
the lib/packages directory, since they are always built as shared
|
||||
libraries using the -fPIC switch. However, if a library like MPI or
|
||||
FFTW does not exist as a shared library, the shared library build will
|
||||
generate an error. This means you will need to install a shared
|
||||
library version of the auxiliary library. The build instructions for
|
||||
the library should tell you how to do this.
|
||||
|
||||
As an example, here is how to build and install the "MPICH
|
||||
library"_mpich, a popular open-source version of MPI, distributed by
|
||||
Argonne National Lab, as a shared library in the default
|
||||
/usr/local/lib location:
|
||||
|
||||
:link(mpich,http://www-unix.mcs.anl.gov/mpi)
|
||||
|
||||
./configure --enable-shared
|
||||
make
|
||||
make install :pre
|
||||
|
||||
You may need to use "sudo make install" in place of the last line if
|
||||
you do not have write privileges for /usr/local/lib. The end result
|
||||
should be the file /usr/local/lib/libmpich.so.
|
||||
|
||||
:line
|
||||
|
||||
Build the LAMMPS documentation :h4,link(doc)
|
||||
|
||||
[CMake variable]:
|
||||
|
||||
-D BUILD_DOC=value # yes or no (default) :pre
|
||||
|
||||
This will create the HTML doc pages within the CMake build directory.
|
||||
The reason to do this is if you want to "install" LAMMPS on a system
|
||||
after the CMake build via "make install", and include the doc pages in
|
||||
the install.
|
||||
|
||||
[Traditional make]:
|
||||
|
||||
cd lammps/doc
|
||||
make html # html doc pages
|
||||
make pdf # single Manual.pdf file :pre
|
||||
|
||||
This will create a lammps/doc/html dir with the HTML doc pages so that
|
||||
you can browse them locally on your system. Type "make" from the
|
||||
lammps/doc dir to see other options.
|
||||
|
||||
NOTE: You can also download a tarball of the documention for the
|
||||
current LAMMPS version (HTML and PDF files), from the website
|
||||
"download page"_http://lammps.sandia.gov/download.html.
|
||||
|
||||
:line
|
||||
|
||||
Install LAMMPS after a build :h4,link(install)
|
||||
|
||||
After building LAMMPS, you may wish to copy the LAMMPS executable of
|
||||
library, along with other LAMMPS files (library header, doc files) to
|
||||
a globally visible place on your system, for others to access. Note
|
||||
that you may need super-user privileges (e.g. sudo) if the directory
|
||||
you want to copy files to is protected.
|
||||
|
||||
[CMake variable]:
|
||||
|
||||
cmake -D CMAKE_INSTALL_PREFIX=path \[options ...\] ../cmake
|
||||
make # perform make after CMake command
|
||||
make install # perform the installation into prefix :pre
|
||||
|
||||
[Traditional make]:
|
||||
|
||||
There is no "install" option in the src/Makefile for LAMMPS. If you
|
||||
wish to do this you will need to first build LAMMPS, then manually
|
||||
copy the desired LAMMPS files to the appropriate system directories.
|
||||
196
doc/src/Build_cmake.txt
Normal file
@ -0,0 +1,196 @@
|
||||
"Higher level section"_Build.html - "LAMMPS WWW Site"_lws - "LAMMPS
|
||||
Documentation"_ld - "LAMMPS Commands"_lc :c
|
||||
|
||||
:link(lws,http://lammps.sandia.gov)
|
||||
:link(ld,Manual.html)
|
||||
:link(lc,Commands_all.html)
|
||||
|
||||
:line
|
||||
|
||||
Build LAMMPS with CMake :h3
|
||||
|
||||
This page is a short summary of how to use CMake to build LAMMPS.
|
||||
Details on CMake variables that enable specific LAMMPS build options
|
||||
are given on the pages linked to from the "Build"_Build.html doc page.
|
||||
|
||||
Richard Berger (Temple U) has also written a "more comprehensive
|
||||
guide"_https://github.com/lammps/lammps/blob/master/cmake/README.md
|
||||
for how to use CMake to build LAMMPS. If you are new to CMake it is a
|
||||
good place to start.
|
||||
|
||||
:line
|
||||
|
||||
Building LAMMPS with CMake is a two-step process. First you use CMake
|
||||
to create a build environment in a new directory. On Linux systems,
|
||||
this will be based on makefiles for use with make. Then you use the
|
||||
make command to build LAMMPS, which uses the created
|
||||
Makefile(s). Example:
|
||||
|
||||
cd lammps # change to the LAMMPS distribution directory
|
||||
mkdir build; cd build # create a new directory (folder) for build
|
||||
cmake ../cmake \[options ...\] # configuration with (command-line) cmake
|
||||
make # compilation :pre
|
||||
|
||||
The cmake command will detect available features, enable selected
|
||||
packages and options, and will generate the build environment. The make
|
||||
command will then compile and link LAMMPS, producing (by default) an
|
||||
executable called "lmp" and a library called "liblammps.a" in the
|
||||
"build" folder.
|
||||
|
||||
If your machine has multiple CPU cores (most do these days), using a
|
||||
command like "make -jN" (with N being the number of available local
|
||||
CPU cores) can be much faster. If you plan to do development on
|
||||
LAMMPS or need to re-compile LAMMPS repeatedly, installation of the
|
||||
ccache (= Compiler Cache) software may speed up compilation even more.
|
||||
|
||||
After compilation, you can optionally copy the LAMMPS executable and
|
||||
library into your system folders (by default under /usr/local) with:
|
||||
|
||||
make install # optional, copy LAMMPS executable & library elsewhere :pre
|
||||
|
||||
:line
|
||||
|
||||
There are 3 variants of CMake: a command-line version (cmake), a text mode
|
||||
UI version (ccmake), and a graphical GUI version (cmake-GUI). You can use
|
||||
any of them interchangeably to configure and create the LAMMPS build
|
||||
environment. On Linux all the versions produce a Makefile as their
|
||||
output. See more details on each below.
|
||||
|
||||
You can specify a variety of options with any of the 3 versions, which
|
||||
affect how the build is performed and what is included in the LAMMPS
|
||||
executable. Links to pages explaining all the options are listed on
|
||||
the "Build"_Build.html doc page.
|
||||
|
||||
You must perform the CMake build system generation and compilation in
|
||||
a new directory you create. It can be anywhere on your local machine.
|
||||
In these Build pages we assume that you are building in a directory
|
||||
called "lammps/build". You can perform separate builds independently
|
||||
with different options, so long as you perform each of them in a
|
||||
separate directory you create. All the auxiliary files created by one
|
||||
build process (executable, object files, log files, etc) are stored in
|
||||
this directory or sub-directories within it that CMake creates.
|
||||
|
||||
NOTE: To perform a CMake build, no packages can be installed or a
|
||||
build been previously attempted in the LAMMPS src directory by using
|
||||
"make" commands to "perform a conventional LAMMPS
|
||||
build"_Build_make.html. CMake detects if this is the case and
|
||||
generates an error, telling you to type "make no-all purge" in the src
|
||||
directory to un-install all packages. The purge removes all the *.h
|
||||
files auto-generated by make.
|
||||
|
||||
You must have CMake version 2.8 or later on your system to build
|
||||
LAMMPS. A handful of LAMMPS packages (KOKKOS, LATTE, MSCG) require a
|
||||
later version. CMake will print a message telling you if a later
|
||||
version is required. Installation instructions for CMake are below.
|
||||
|
||||
After the initial build, if you edit LAMMPS source files, or add your
|
||||
own new files to the source directory, you can just re-type make from
|
||||
your build directory and it will re-compile only the files that have
|
||||
changed. If you want to change CMake options you can run cmake (or
|
||||
ccmake or cmake-gui) again from the same build directory and alter
|
||||
various options; see details below. Or you can remove the entire build
|
||||
folder, recreate the directory and start over.
|
||||
|
||||
:line
|
||||
|
||||
[Command-line version of CMake]:
|
||||
|
||||
cmake \[options ...\] /path/to/lammps/cmake # build from any dir
|
||||
cmake \[options ...\] ../cmake # build from lammps/build :pre
|
||||
|
||||
The cmake command takes one required argument, which is the LAMMPS
|
||||
cmake directory which contains the CMakeLists.txt file.
|
||||
|
||||
The argument can be preceeded or followed by various CMake
|
||||
command-line options. Several useful ones are:
|
||||
|
||||
-D CMAKE_INSTALL_PREFIX=path # where to install LAMMPS executable/lib if desired
|
||||
-D CMAKE_BUILD_TYPE=type # type = Release or Debug
|
||||
-G output # style of output CMake generates
|
||||
-DVARIABLE=value # setting for a LAMMPS feature to enable
|
||||
-D VARIABLE=value # ditto, but cannot come after CMakeLists.txt dir :pre
|
||||
|
||||
All the LAMMPS-specific -D variables that a LAMMPS build supports are
|
||||
described on the pages linked to from the "Build"_Build.html doc page.
|
||||
All of these variable names are upper-case and their values are
|
||||
lower-case, e.g. -D LAMMPS_SIZES=smallbig. For boolean values, any of
|
||||
these forms can be used: yes/no, on/off, 1/0.
|
||||
|
||||
On Unix/Linux machines, CMake generates a Makefile by default to
|
||||
perform the LAMMPS build. Alternate forms of build info can be
|
||||
generated via the -G switch, e.g. Visual Studio on a Windows machine,
|
||||
Xcode on MacOS, or KDevelop on Linux. Type "cmake --help" to see the
|
||||
"Generator" styles of output your system supports.
|
||||
|
||||
NOTE: When CMake runs, it prints configuration info to the screen.
|
||||
You should review this to verify all the features you requested were
|
||||
enabled, including packages. You can also see what compilers and
|
||||
compile options will be used for the build. Any errors in CMake
|
||||
variable syntax will also be flagged, e.g. mis-typed variable names or
|
||||
variable values.
|
||||
|
||||
CMake creates a CMakeCache.txt file when it runs. This stores all the
|
||||
settings, so that when running CMake again you can use the current
|
||||
folder '.' instead of the path to the LAMMPS cmake folder as the
|
||||
required argument to the CMake command. Either way the existing
|
||||
settings will be inherited unless the CMakeCache.txt file is removed.
|
||||
|
||||
If you later want to change a setting you can rerun cmake in the build
|
||||
directory with different setting. Please note that some automatically
|
||||
detected variables will not change their value when you rerun cmake.
|
||||
In these cases it is usually better to first remove all the
|
||||
files/directories in the build directory, or start with a fresh build
|
||||
directory.
|
||||
|
||||
:line
|
||||
|
||||
[Curses version (terminal-style menu) of CMake]:
|
||||
|
||||
ccmake ../cmake :pre
|
||||
|
||||
You initiate the configuration and build environment generation steps
|
||||
separately. For the first you have to type [c], for the second you
|
||||
have to type [g]. You may need to type [c] multiple times, and may be
|
||||
required to edit some of the entries of CMake configuration variables
|
||||
in between. Please see the "ccmake
|
||||
manual"_https://cmake.org/cmake/help/latest/manual/ccmake.1.html for
|
||||
more information.
|
||||
|
||||
:line
|
||||
|
||||
[GUI version of CMake]:
|
||||
|
||||
cmake-gui ../cmake :pre
|
||||
|
||||
You initiate the configuration and build environment generation steps
|
||||
separately. For the first you have to click on the [Configure] button,
|
||||
for the second you have to click on the [Generate] button. You may
|
||||
need to click on [Configure] multiple times, and may be required to
|
||||
edit some of the entries of CMake configuration variables in between.
|
||||
Please see the "cmake-gui
|
||||
manual"_https://cmake.org/cmake/help/latest/manual/cmake-gui.1.html
|
||||
for more information.
|
||||
|
||||
:line
|
||||
|
||||
[Installing CMake]
|
||||
|
||||
Check if your machine already has CMake installed:
|
||||
|
||||
which cmake # do you have it?
|
||||
which cmake3 # version 3 may have this name
|
||||
cmake --version # what specific version you have :pre
|
||||
|
||||
On clusters or supercomputers which use environment modules to manage
|
||||
software packages, do this:
|
||||
|
||||
module list # is a cmake module already loaded?
|
||||
module avail # is a cmake module available?
|
||||
module load cmake3 # load cmake module with appropriate name :pre
|
||||
|
||||
Most Linux distributions offer pre-compiled cmake packages through
|
||||
their package management system. If you do not have CMake or a new
|
||||
enough version, you can download the latest version at
|
||||
"https://cmake.org/download/"_https://cmake.org/download/.
|
||||
Instructions on how to install it on various platforms can be found
|
||||
"on this page"_https://cmake.org/install/.
|
||||
1083
doc/src/Build_extras.txt
Normal file
85
doc/src/Build_link.txt
Normal file
@ -0,0 +1,85 @@
|
||||
"Higher level section"_Build.html - "LAMMPS WWW Site"_lws - "LAMMPS
|
||||
Documentation"_ld - "LAMMPS Commands"_lc :c
|
||||
|
||||
:link(lws,http://lammps.sandia.gov)
|
||||
:link(ld,Manual.html)
|
||||
:link(lc,Commands_all.html)
|
||||
|
||||
:line
|
||||
|
||||
Link LAMMPS as a library to another code :h3
|
||||
|
||||
LAMMPS can be used as a library by another application, including
|
||||
Python scripts. The files src/library.cpp and library.h define the
|
||||
C-style API for using LAMMPS as a library. See the "Howto
|
||||
library"_Howto_library.html doc page for a description of the
|
||||
interface and how to extend it for your needs.
|
||||
|
||||
The "Build basics"_Build_basics.html doc page explains how to build
|
||||
LAMMPS as either a shared or static library. This results in one of
|
||||
these 2 files:
|
||||
|
||||
liblammps.so # shared library
|
||||
liblammps.a # static library
|
||||
|
||||
:line
|
||||
|
||||
[Link with LAMMPS as a static library]:
|
||||
|
||||
The calling application can link to LAMMPS as a static library with a
|
||||
link command like this:
|
||||
|
||||
g++ caller.o -L/home/sjplimp/lammps/src -llammps -o caller
|
||||
|
||||
The -L argument is the path to where the liblammps.a file is. The
|
||||
-llammps argument is shorthand for the file liblammps.a.
|
||||
|
||||
:line
|
||||
|
||||
[Link with LAMMPS as a shared library]:
|
||||
|
||||
If you wish to link to liblammps.so, the operating system finds shared
|
||||
libraries to load at run-time using the environment variable
|
||||
LD_LIBRARY_PATH. To enable this you can do one of two things:
|
||||
|
||||
(1) Copy the liblammps.so file to a location the system can find it,
|
||||
such as /usr/local/lib. I.e. a directory already listed in your
|
||||
LD_LIBRARY_PATH variable. You can type
|
||||
|
||||
printenv LD_LIBRARY_PATH :pre
|
||||
|
||||
to see what directories are in that list.
|
||||
|
||||
(2) Add the LAMMPS src directory (or the directory you perform CMake
|
||||
build in) to your LD_LIBRARY_PATH, so that the current version of the
|
||||
shared library is always available to programs that use it.
|
||||
|
||||
For the csh or tcsh shells, you would add something like this to your
|
||||
~/.cshrc file:
|
||||
|
||||
setenv LD_LIBRARY_PATH $\{LD_LIBRARY_PATH\}:/home/sjplimp/lammps/src :pre
|
||||
|
||||
:line
|
||||
|
||||
[Calling the LAMMPS library]:
|
||||
|
||||
Either flavor of library (static or shared) allows one or more LAMMPS
|
||||
objects to be instantiated from the calling program.
|
||||
|
||||
When used from a C++ program, all of LAMMPS is wrapped in a LAMMPS_NS
|
||||
namespace; you can safely use any of its classes and methods from
|
||||
within the calling code, as needed.
|
||||
|
||||
When used from a C or Fortran program, the library has a simple
|
||||
C-style interface, provided in src/library.cpp and src/library.h.
|
||||
|
||||
See the "Python library"_Python_library.html doc page for a
|
||||
description of the Python interface to LAMMPS, which wraps the C-style
|
||||
interface.
|
||||
|
||||
See the sample codes in examples/COUPLE/simple for examples of C++ and
|
||||
C and Fortran codes that invoke LAMMPS thru its library interface.
|
||||
Other examples in the COUPLE directory use coupling ideas discussed on
|
||||
the "Howto couple"_Howto_couple.html doc page.
|
||||
|
||||
|
||||
85
doc/src/Build_make.txt
Normal file
@ -0,0 +1,85 @@
|
||||
"Higher level section"_Build.html - "LAMMPS WWW Site"_lws - "LAMMPS
|
||||
Documentation"_ld - "LAMMPS Commands"_lc :c
|
||||
|
||||
:link(lws,http://lammps.sandia.gov)
|
||||
:link(ld,Manual.html)
|
||||
:link(lc,Commands_all.html)
|
||||
|
||||
:line
|
||||
|
||||
Build LAMMPS with make :h3
|
||||
|
||||
Building LAMMPS with traditional makefiles requires that you have a
|
||||
Makefile."machine" file appropriate for your system in the src/MAKE,
|
||||
src/MAKE/MACHINES, src/MAKE/OPTIONS, or src/MAKE/MINE directory (see
|
||||
below). It can include various options for customizing your LAMMPS
|
||||
build with a number of global compilation options and features.
|
||||
|
||||
To include LAMMPS packages (i.e. optional commands and styles) you
|
||||
must install them first, as discussed on the "Build
|
||||
package"_Build_package.html doc page. If the packages require
|
||||
provided or external libraries, you must build those libraries before
|
||||
building LAMMPS. Building "LAMMPS with CMake"_Build_cmake.html can
|
||||
automate all of this for many types of machines, especially
|
||||
workstations, desktops and laptops, so we suggest you try it first.
|
||||
|
||||
These commands perform a default LAMMPS build, producing the LAMMPS
|
||||
executable lmp_serial or lmp_mpi in lammps/src:
|
||||
|
||||
cd lammps/src
|
||||
make serial # build a serial LAMMPS executable
|
||||
make mpi # build a parallel LAMMPS executable with MPI
|
||||
make # see a variety of make options :pre
|
||||
|
||||
This initial compilation can take a long time, since LAMMPS is a large
|
||||
project with many features. If your machine has multiple CPU cores
|
||||
(most do these days), using a command like "make -jN mpi" (with N =
|
||||
the number of available CPU cores) can be much faster. If you plan to
|
||||
do development on LAMMPS or need to re-compile LAMMPS repeatedly, the
|
||||
installation of the ccache (= Compiler Cache) software may speed up
|
||||
compilation even more.
|
||||
|
||||
After the initial build, whenever you edit LAMMPS source files, or add
|
||||
or remove new files to the source directory (e.g. by installing or
|
||||
uninstalling packages), you must re-compile and relink the LAMMPS
|
||||
executable with the same "make" command. This makefiles dependencies
|
||||
should insure that only the subset of files that need to be are
|
||||
re-compiled.
|
||||
|
||||
NOTE: When you build LAMMPS for the first time, a long list of *.d
|
||||
files will be printed out rapidly. This is not an error; it is the
|
||||
Makefile doing its normal creation of dependencies.
|
||||
|
||||
:line
|
||||
|
||||
The lammps/src/MAKE tree contains all the Makefile.machine files
|
||||
included in the LAMMPS distribution. Typing "make machine" uses
|
||||
Makefile.machine. Thus the "make serial" or "make mpi" lines above
|
||||
use Makefile.serial and Makefile.mpi. Others are in these dirs:
|
||||
|
||||
OPTIONS # Makefiles which enable specific options
|
||||
MACHINES # Makefiles for specific machines
|
||||
MINE # customized Makefiles you create (you may need to create this folder) :pre
|
||||
|
||||
Typing "make" lists all the available Makefile.machine files. A file
|
||||
with the same name can appear in multiple folders (not a good idea).
|
||||
The order the dirs are searched is as follows: src/MAKE/MINE,
|
||||
src/MAKE, src/MAKE/OPTIONS, src/MAKE/MACHINES. This gives preference
|
||||
to a customized file you put in src/MAKE/MINE.
|
||||
|
||||
Makefiles you may wish to try include these (some require a package
|
||||
first be installed). Many of these include specific compiler flags
|
||||
for optimized performance. Please note, however, that some of these
|
||||
customized machine Makefile are contributed by users. Since both
|
||||
compilers, OS configurations, and LAMMPS itself keep changing, their
|
||||
settings may become outdated:
|
||||
|
||||
make mac # build serial LAMMPS on a Mac
|
||||
make mac_mpi # build parallel LAMMPS on a Mac
|
||||
make intel_cpu # build with the USER-INTEL package optimized for CPUs
|
||||
make knl # build with the USER-INTEL package optimized for KNLs
|
||||
make opt # build with the OPT package optimized for CPUs
|
||||
make omp # build with the USER-OMP package optimized for OpenMP
|
||||
make kokkos_omp # build with the KOKKOS package for OpenMP
|
||||
make kokkos_cuda_mpi # build with the KOKKOS package for GPUs
|
||||
make kokkos_phi # build with the KOKKOS package for KNLs :pre
|
||||
225
doc/src/Build_package.txt
Normal file
@ -0,0 +1,225 @@
|
||||
"Higher level section"_Build.html - "LAMMPS WWW Site"_lws - "LAMMPS
|
||||
Documentation"_ld - "LAMMPS Commands"_lc :c
|
||||
|
||||
:link(lws,http://lammps.sandia.gov)
|
||||
:link(ld,Manual.html)
|
||||
:link(lc,Commands_all.html)
|
||||
|
||||
:line
|
||||
|
||||
Include packages in build :h3
|
||||
|
||||
In LAMMPS, a package is a group of files that enable a specific set of
|
||||
features. For example, force fields for molecular systems or
|
||||
rigid-body constraints are in packages. In the src directory, each
|
||||
package is a sub-directory with the package name in capital letters.
|
||||
|
||||
An overview of packages is given on the "Packages"_Packages.html doc
|
||||
page. Brief overviews of each package are on the "Packages
|
||||
details"_Packages_details.html doc page.
|
||||
|
||||
When building LAMMPS, you can choose to include or exclude each
|
||||
package. In general there is no need to include a package if you
|
||||
never plan to use its features.
|
||||
|
||||
If you get a run-time error that a LAMMPS command or style is
|
||||
"Unknown", it is often because the command is contained in a package,
|
||||
and your build did not include that package. Running LAMMPS with the
|
||||
"-h command-line switch"_Run_options.html will print all the included
|
||||
packages and commands for that executable.
|
||||
|
||||
For the majority of packages, if you follow the single step below to
|
||||
include it, you can then build LAMMPS exactly the same as you would
|
||||
without any packages installed. A few packages may require additional
|
||||
steps, as explained on the "Build extras"_Build_extras.html doc page.
|
||||
|
||||
These links take you to the extra instructions for those select
|
||||
packages:
|
||||
|
||||
"COMPRESS"_Build_extras.html#compress,
|
||||
"GPU"_Build_extras.html#gpu,
|
||||
"KIM"_Build_extras.html#kim,
|
||||
"KOKKOS"_Build_extras.html#kokkos,
|
||||
"LATTE"_Build_extras.html#latte,
|
||||
"MEAM"_Build_extras.html#meam,
|
||||
"MESSAGE"_Build_extras.html#message,
|
||||
"MSCG"_Build_extras.html#mscg,
|
||||
"OPT"_Build_extras.html#opt,
|
||||
"POEMS"_Build_extras.html#poems,
|
||||
"PYTHON"_Build_extras.html#python,
|
||||
"REAX"_Build_extras.html#reax,
|
||||
"VORONOI"_Build_extras.html#voronoi,
|
||||
"USER-ATC"_Build_extras.html#user-atc,
|
||||
"USER-AWPMD"_Build_extras.html#user-awpmd,
|
||||
"USER-COLVARS"_Build_extras.html#user-colvars,
|
||||
"USER-H5MD"_Build_extras.html#user-h5md,
|
||||
"USER-INTEL"_Build_extras.html#user-intel,
|
||||
"USER-MOLFILE"_Build_extras.html#user-molfile,
|
||||
"USER-NETCDF"_Build_extras.html#user-netcdf,
|
||||
"USER-OMP"_Build_extras.html#user-omp,
|
||||
"USER-QMMM"_Build_extras.html#user-qmmm,
|
||||
"USER-QUIP"_Build_extras.html#user-quip,
|
||||
"USER-SCAFACOS"_Build_extras.html#user-scafacos,
|
||||
"USER-SMD"_Build_extras.html#user-smd,
|
||||
"USER-VTK"_Build_extras.html#user-vtk :tb(c=6,ea=c,a=l)
|
||||
|
||||
The mechanism for including packages is simple but different for CMake
|
||||
versus make.
|
||||
|
||||
[CMake variables]:
|
||||
|
||||
-D PKG_NAME=value # yes or no (default) :pre
|
||||
|
||||
Examples:
|
||||
|
||||
-D PKG_MANYBODY=yes
|
||||
-D PKG_USER-INTEL=yes :pre
|
||||
|
||||
All standard and user packages are included the same way. Note that
|
||||
USER packages have a hyphen between USER and the rest of the package
|
||||
name, not an underscore.
|
||||
|
||||
See the shortcut section below for how to install many packages at
|
||||
once with CMake.
|
||||
|
||||
NOTE: If you toggle back and forth between building with CMake vs
|
||||
make, no packages in the src directory can be installed when you
|
||||
invoke cmake. CMake will give an error if that is not the case,
|
||||
indicating how you can un-install all packages in the src dir.
|
||||
|
||||
[Traditional make]:
|
||||
|
||||
cd lammps/src
|
||||
make ps # check which packages are currently installed
|
||||
make yes-name # install a package with name
|
||||
make no-name # un-install a package with name
|
||||
make mpi # build LAMMPS with whatever packages are now installed :pre
|
||||
|
||||
Examples:
|
||||
|
||||
make no-rigid
|
||||
make yes-user-intel :pre
|
||||
|
||||
All standard and user packages are included the same way.
|
||||
|
||||
See the shortcut section below for how to install many packages at
|
||||
once with make.
|
||||
|
||||
NOTE: You must always re-build LAMMPS (via make) after installing or
|
||||
un-installing a package, for the action to take effect.
|
||||
|
||||
NOTE: You cannot install or un-install packages and build LAMMPS in a
|
||||
single make command with multiple targets, e.g. make yes-colloid mpi.
|
||||
This is because the make procedure creates a list of source files that
|
||||
will be out-of-date for the build if the package configuration changes
|
||||
within the same command. You can include or exclude multiple packages
|
||||
in a single make command, e.g. make yes-colloid no-manybody.
|
||||
|
||||
[CMake and make info]:
|
||||
|
||||
Any package can be included or excluded in a LAMMPS build, independent
|
||||
of all other packages. However, some packages include files derived
|
||||
from files in other packages. LAMMPS checks for this and does the
|
||||
right thing. Individual files are only included if their dependencies
|
||||
are already included. Likewise, if a package is excluded, other files
|
||||
dependent on that package are also excluded.
|
||||
|
||||
When you download a LAMMPS tarball or download LAMMPS source files
|
||||
from the Git or SVN repositories, no packages are pre-installed in the
|
||||
src directory.
|
||||
|
||||
NOTE: Prior to Aug 2018, if you downloaded a tarball, 3 packages
|
||||
(KSPACE, MANYBODY, MOLECULE) were pre-installed in the src directory.
|
||||
That is no longer the case, so that CMake will build as-is without the
|
||||
need to un-install those packages.
|
||||
|
||||
:line
|
||||
|
||||
[CMake shortcuts for installing many packages]:
|
||||
|
||||
Instead of specifying all the CMake options via the command-line,
|
||||
CMake allows initializing the variable cache using script files. These
|
||||
are regular CMake files which can manipulate and set variables, and
|
||||
can also contain control flow constructs.
|
||||
|
||||
LAMMPS includes several of these files to define configuration
|
||||
"presets", similar to the options that exist for the Make based
|
||||
system. Using these files you can enable/disable portions of the
|
||||
available packages in LAMMPS. If you need a custom preset you can take
|
||||
one of them as a starting point and customize it to your needs.
|
||||
|
||||
cmake -C ../cmake/presets/all_on.cmake \[OPTIONS\] ../cmake | enable all packages
|
||||
cmake -C ../cmake/presets/all_off.cmake \[OPTIONS\] ../cmake | disable all packages
|
||||
cmake -C ../cmake/presets/std.cmake \[OPTIONS\] ../cmake | enable standard packages
|
||||
cmake -C ../cmake/presets/user.cmake \[OPTIONS\] ../cmake | enable user packages
|
||||
cmake -C ../cmake/presets/std_nolib.cmake \[OPTIONS\] ../cmake | enable standard packages that do not require extra libraries
|
||||
cmake -C ../cmake/presets/nolib.cmake \[OPTIONS\] ../cmake | disable all packages that do not require extra libraries
|
||||
cmake -C ../cmake/presets/manual_selection.cmake \[OPTIONS\] ../cmake | example of how to create a manual selection of packages :tb(s=|,a=l)
|
||||
|
||||
NOTE: Running cmake this way manipulates the variable cache in your
|
||||
current build directory. You can combine presets and options with
|
||||
multiple cmake runs.
|
||||
|
||||
[Example:]
|
||||
|
||||
# build LAMMPS with all "standard" packages which don't
|
||||
# use libraries and enable GPU package
|
||||
mkdir build
|
||||
cd build
|
||||
cmake -C ../cmake/presets/std_nolib.cmake -D PKG_GPU=on ../cmake :pre
|
||||
|
||||
:line
|
||||
|
||||
[Make shortcuts for installing many packages]:
|
||||
|
||||
The following commands are useful for managing package source files
|
||||
and their installation when building LAMMPS via traditional make.
|
||||
Just type "make" in lammps/src to see a one-line summary.
|
||||
|
||||
These commands install/un-install sets of packages:
|
||||
|
||||
make yes-all | install all packages
|
||||
make no-all | un-install all packages
|
||||
make yes-standard or make yes-std | install standard packages
|
||||
make no-standard or make no-std| un-install standard packages
|
||||
make yes-user | install user packages
|
||||
make no-user | un-install user packages
|
||||
make yes-lib | install packages that require extra libraries
|
||||
make no-lib | un-install packages that require extra libraries
|
||||
make yes-ext | install packages that require external libraries
|
||||
make no-ext | un-install packages that require external libraries :tb(s=|,a=l)
|
||||
|
||||
which install/un-install various sets of packages. Typing "make
|
||||
package" will list all the these commands.
|
||||
|
||||
NOTE: Installing or un-installing a package works by simply copying
|
||||
files back and forth between the main src directory and
|
||||
sub-directories with the package name (e.g. src/KSPACE, src/USER-ATC),
|
||||
so that the files are included or excluded when LAMMPS is built.
|
||||
|
||||
The following make commands help manage files that exist in both the
|
||||
src directory and in package sub-directories. You do not normally
|
||||
need to use these commands unless you are editing LAMMPS files or are
|
||||
"installing a patch"_Install_patch.html downloaded from the LAMMPS web
|
||||
site.
|
||||
|
||||
Type "make package-status" or "make ps" to show which packages are
|
||||
currently installed. For those that are installed, it will list any
|
||||
files that are different in the src directory and package
|
||||
sub-directory.
|
||||
|
||||
Type "make package-installed" or "make pi" to show which packages are
|
||||
currently installed, without listing the status of packages that are
|
||||
not installed.
|
||||
|
||||
Type "make package-update" or "make pu" to overwrite src files with
|
||||
files from the package sub-directories if the package is installed.
|
||||
It should be used after a "patch has been applied"_Install_patch.html,
|
||||
since patches only update the files in the package sub-directory, but
|
||||
not the src files.
|
||||
|
||||
Type "make package-overwrite" to overwrite files in the package
|
||||
sub-directories with src files.
|
||||
|
||||
Type "make package-diff" to list all differences between pairs of
|
||||
files in both the src dir and a package dir.
|
||||
341
doc/src/Build_settings.txt
Normal file
@ -0,0 +1,341 @@
|
||||
"Higher level section"_Build.html - "LAMMPS WWW Site"_lws - "LAMMPS
|
||||
Documentation"_ld - "LAMMPS Commands"_lc :c
|
||||
|
||||
:link(lws,http://lammps.sandia.gov)
|
||||
:link(ld,Manual.html)
|
||||
:link(lc,Commands_all.html)
|
||||
|
||||
:line
|
||||
|
||||
Optional build settings :h3
|
||||
|
||||
LAMMPS can be built with several optional settings. Each sub-section
|
||||
explain how to do this for building both with CMake and make.
|
||||
|
||||
"FFT library"_#fft for use with the "kspace_style pppm"_kspace_style.html command
|
||||
"Size of LAMMPS data types"_#size
|
||||
"Read or write compressed files"_#gzip
|
||||
"Output of JPG and PNG files"_#graphics via the "dump image"_dump_image.html command
|
||||
"Output of movie files"_#graphics via the "dump_movie"_dump_image.html command
|
||||
"Memory allocation alignment"_#align
|
||||
"Workaround for long long integers"_#longlong
|
||||
"Error handling exceptions"_#exceptions when using LAMMPS as a library :all(b)
|
||||
|
||||
:line
|
||||
|
||||
FFT library :h4,link(fft)
|
||||
|
||||
When the KSPACE package is included in a LAMMPS build, the
|
||||
"kspace_style pppm"_kspace_style.html command performs 3d FFTs which
|
||||
require use of an FFT library to compute 1d FFTs. The KISS FFT
|
||||
library is included with LAMMPS but other libraries can be faster.
|
||||
LAMMPS can use them if they are available on your system.
|
||||
|
||||
[CMake variables]:
|
||||
|
||||
-D FFT=value # FFTW3 or MKL or KISS, default is FFTW3 if found, else KISS
|
||||
-D FFT_SINGLE=value # yes or no (default), no = double precision
|
||||
-D FFT_PACK=value # array (default) or pointer or memcpy :pre
|
||||
|
||||
NOTE: The values for the FFT variable must be in upper-case. This is
|
||||
an exception to the rule that all CMake variables can be specified
|
||||
with lower-case values.
|
||||
|
||||
Usually these settings are all that is needed. If CMake cannot find
|
||||
the FFT library, you can set these variables:
|
||||
|
||||
-D FFTW3_INCLUDE_DIRS=path # path to FFTW3 include files
|
||||
-D FFTW3_LIBRARIES=path # path to FFTW3 libraries
|
||||
-D MKL_INCLUDE_DIRS=path # ditto for Intel MKL library
|
||||
-D MKL_LIBRARIES=path :pre
|
||||
|
||||
[Makefile.machine settings]:
|
||||
|
||||
FFT_INC = -DFFT_FFTW3 # -DFFT_FFTW3, -DFFT_FFTW (same as -DFFT_FFTW3), -DFFT_MKL, or -DFFT_KISS
|
||||
# default is KISS if not specified
|
||||
FFT_INC = -DFFT_SINGLE # do not specify for double precision
|
||||
FFT_INC = -DFFT_PACK_ARRAY # or -DFFT_PACK_POINTER or -DFFT_PACK_MEMCPY :pre
|
||||
# default is FFT_PACK_ARRAY if not specified
|
||||
|
||||
FFT_INC = -I/usr/local/include
|
||||
FFT_PATH = -L/usr/local/lib
|
||||
FFT_LIB = -lfftw3 # FFTW3 double precision
|
||||
FFT_LIB = -lfftw3 -lfftw3f # FFTW3 single precision
|
||||
FFT_LIB = -lmkl_intel_lp64 -lmkl_sequential -lmkl_core # MKL with Intel compiler
|
||||
FFT_LIB = -lmkl_gf_lp64 -lmkl_sequential -lmkl_core # MKL with GNU compier :pre
|
||||
|
||||
As with CMake, you do not need to set paths in FFT_INC or FFT_PATH, if
|
||||
make can find the FFT header and library files. You must specify
|
||||
FFT_LIB with the appropriate FFT libraries to include in the link.
|
||||
|
||||
[CMake and make info]:
|
||||
|
||||
The "KISS FFT library"_http://kissfft.sf.net is included in the LAMMPS
|
||||
distribution. It is portable across all platforms. Depending on the
|
||||
size of the FFTs and the number of processors used, the other
|
||||
libraries listed here can be faster.
|
||||
|
||||
However, note that long-range Coulombics are only a portion of the
|
||||
per-timestep CPU cost, FFTs are only a portion of long-range
|
||||
Coulombics, and 1d FFTs are only a portion of the FFT cost (parallel
|
||||
communication can be costly). A breakdown of these timings is printed
|
||||
to the screen at the end of a run using the "kspace_style
|
||||
pppm"_kspace_style.html command. The "Run output"_Run_output.html
|
||||
doc page gives more details.
|
||||
|
||||
FFTW is a fast, portable FFT library that should also work on any
|
||||
platform and can be faster than the KISS FFT library. You can
|
||||
download it from "www.fftw.org"_http://www.fftw.org. LAMMPS requires
|
||||
version 3.X; the legacy version 2.1.X is no longer supported.
|
||||
|
||||
Building FFTW for your box should be as simple as ./configure; make;
|
||||
make install. The install command typically requires root privileges
|
||||
(e.g. invoke it via sudo), unless you specify a local directory with
|
||||
the "--prefix" option of configure. Type "./configure --help" to see
|
||||
various options.
|
||||
|
||||
The Intel MKL math library is part of the Intel compiler suite. It
|
||||
can be used with the Intel or GNU compiler (see FFT_LIB setting above).
|
||||
|
||||
Performing 3d FFTs in parallel can be time consuming due to data
|
||||
access and required communication. This cost can be reduced by
|
||||
performing single-precision FFTs instead of double precision. Single
|
||||
precision means the real and imaginary parts of a complex datum are
|
||||
4-byte floats. Double precision means they are 8-byte doubles. Note
|
||||
that Fourier transform and related PPPM operations are somewhat less
|
||||
sensitive to floating point truncation errors and thus the resulting
|
||||
error is less than the difference in precision. Using the -DFFT_SINGLE
|
||||
setting trades off a little accuracy for reduced memory use and
|
||||
parallel communication costs for transposing 3d FFT data.
|
||||
|
||||
When using -DFFT_SINGLE with FFTW3 you may need to build the FFTW
|
||||
library a second time with support for single-precision.
|
||||
|
||||
For FFTW3, do the following, which should produce the additional
|
||||
library libfftw3f.a
|
||||
|
||||
make clean
|
||||
./configure --enable-single; make; make install :pre
|
||||
|
||||
Performing 3d FFTs requires communication to transpose the 3d FFT
|
||||
grid. The data packing/unpacking for this can be done in one of 3
|
||||
modes (ARRAY, POINTER, MEMCPY) as set by the FFT_PACK syntax above.
|
||||
Depending on the machine, the size of the FFT grid, the number of
|
||||
processors used, one option may be slightly faster. The default is
|
||||
ARRAY mode.
|
||||
|
||||
:line
|
||||
|
||||
Size of LAMMPS data types :h4,link(size)
|
||||
|
||||
LAMMPS has a few integer data types which can be defined as 4-byte or
|
||||
8-byte integers. The default setting of "smallbig" is almost always
|
||||
adequate.
|
||||
|
||||
[CMake variable]:
|
||||
|
||||
-D LAMMPS_SIZES=value # smallbig (default) or bigbig or smallsmall :pre
|
||||
|
||||
[Makefile.machine setting]:
|
||||
|
||||
LMP_INC = -DLAMMPS_SMALLBIG # or -DLAMMPS_BIGBIG or -DLAMMPS_SMALLSMALL :pre
|
||||
# default is LAMMMPS_SMALLBIG if not specified
|
||||
[CMake and make info]:
|
||||
|
||||
The default "smallbig" setting allows for simulations with:
|
||||
|
||||
total atom count = 2^63 atoms (about 9e18)
|
||||
total timesteps = 2^63 (about 9e18)
|
||||
atom IDs = 2^31 (about 2 billion)
|
||||
image flags = roll over at 512 :ul
|
||||
|
||||
The "bigbig" setting increases the latter two limits. It allows for:
|
||||
|
||||
total atom count = 2^63 atoms (about 9e18)
|
||||
total timesteps = 2^63 (about 9e18)
|
||||
atom IDs = 2^63 (about 9e18)
|
||||
image flags = roll over at about 1 million (2^20) :ul
|
||||
|
||||
The "smallsmall" setting is only needed if your machine does not
|
||||
support 8-byte integers. It allows for:
|
||||
|
||||
total atom count = 2^31 atoms (about 2 billion)
|
||||
total timesteps = 2^31 (about 2 billion)
|
||||
atom IDs = 2^31 (about 2 billion)
|
||||
image flags = roll over at 512 (2^9) :ul
|
||||
|
||||
Atom IDs are not required for atomic systems which do not store bond
|
||||
topology information, though IDs are enabled by default. The
|
||||
"atom_modify id no"_atom_modify.html command will turn them off. Atom
|
||||
IDs are required for molecular systems with bond topology (bonds,
|
||||
angles, dihedrals, etc). Thus if you model a molecular system with
|
||||
more than 2 billion atoms, you need the "bigbig" setting.
|
||||
|
||||
Image flags store 3 values per atom which count the number of times an
|
||||
atom has moved through the periodic box in each dimension. See the
|
||||
"dump"_dump.html doc page for a discussion. If an atom moves through
|
||||
the periodic box more than this limit, the value will "roll over",
|
||||
e.g. from 511 to -512, which can cause diagnostics like the
|
||||
mean-squared displacement, as calculated by the "compute
|
||||
msd"_compute_msd.html command, to be faulty.
|
||||
|
||||
Note that the USER-ATC package is not currently compatible with the
|
||||
"bigbig" setting.
|
||||
|
||||
Also note that the GPU package requires its lib/gpu library to be
|
||||
compiled with the same size setting, or the link will fail. A CMake
|
||||
build does this automatically. When building with make, the setting
|
||||
in whichever lib/gpu/Makefile is used must be the same as above.
|
||||
|
||||
:line
|
||||
|
||||
Output of JPG, PNG, and movie files :h4,link(graphics)
|
||||
|
||||
The "dump image"_dump_image.html command has options to output JPEG or
|
||||
PNG image files. Likewise the "dump movie"_dump_image.html command
|
||||
outputs movie files in MPEG format. Using these options requires the
|
||||
following settings:
|
||||
|
||||
[CMake variables]:
|
||||
|
||||
-D WITH_JPEG=value # yes or no
|
||||
# default = yes if CMake finds JPEG files, else no
|
||||
-D WITH_PNG=value # yes or no
|
||||
# default = yes if CMake finds PNG and ZLIB files, else no
|
||||
-D WITH_FFMPEG=value # yes or no
|
||||
# default = yes if CMake can find ffmpeg, else no :pre
|
||||
|
||||
Usually these settings are all that is needed. If CMake cannot find
|
||||
the graphics header, library, executable files, you can set these
|
||||
variables:
|
||||
|
||||
-D JPEG_INCLUDE_DIR=path # path to jpeglib.h header file
|
||||
-D JPEG_LIBRARIES=path # path to libjpeg.a (.so) file
|
||||
-D PNG_INCLUDE_DIR=path # path to png.h header file
|
||||
-D PNG_LIBRARIES=path # path to libpng.a (.so) file
|
||||
-D ZLIB_INCLUDE_DIR=path # path to zlib.h header file
|
||||
-D ZLIB_LIBRARIES=path # path to libz.a (.so) file
|
||||
-D FFMPEG_EXECUTABLE=path # path to ffmpeg executable :pre
|
||||
|
||||
[Makefile.machine settings]:
|
||||
|
||||
LMP_INC = -DLAMMPS_JPEG
|
||||
LMP_INC = -DLAMMPS_PNG
|
||||
LMP_INC = -DLAMMPS_FFMPEG :pre
|
||||
|
||||
JPG_INC = -I/usr/local/include # path to jpeglib.h, png.h, zlib.h header files if make cannot find them
|
||||
JPG_PATH = -L/usr/lib # paths to libjpeg.a, libpng.a, libz.a (.so) files if make cannot find them
|
||||
JPG_LIB = -ljpeg -lpng -lz # library names :pre
|
||||
|
||||
As with CMake, you do not need to set JPG_INC or JPG_PATH, if make can
|
||||
find the graphics header and library files. You must specify JPG_LIB
|
||||
with a list of graphics libraries to include in the link. You must
|
||||
insure ffmpeg is in a directory where LAMMPS can find it at runtime,
|
||||
i.e. a dir in your PATH environment variable.
|
||||
|
||||
[CMake and make info]:
|
||||
|
||||
Using ffmpeg to output movie files requires that your machine
|
||||
supports the "popen" function in the standard runtime library.
|
||||
|
||||
NOTE: On some clusters with high-speed networks, using the fork()
|
||||
library calls (required by popen()) can interfere with the fast
|
||||
communication library and lead to simulations using ffmpeg to hang or
|
||||
crash.
|
||||
|
||||
:line
|
||||
|
||||
Read or write compressed files :h4,link(gzip)
|
||||
|
||||
If this option is enabled, large files can be read or written with
|
||||
gzip compression by several LAMMPS commands, including
|
||||
"read_data"_read_data.html, "rerun"_rerun.html, and "dump"_dump.html.
|
||||
|
||||
[CMake variables]:
|
||||
|
||||
-D WITH_GZIP=value # yes or no
|
||||
# default is yes if CMake can find gzip, else no
|
||||
-D GZIP_EXECUTABLE=path # path to gzip executable if CMake cannot find it :pre
|
||||
|
||||
[Makefile.machine setting]:
|
||||
|
||||
LMP_INC = -DLAMMPS_GZIP :pre
|
||||
|
||||
[CMake and make info]:
|
||||
|
||||
This option requires that your machine supports the "popen()" function
|
||||
in the standard runtime library and that a gzip executable can be
|
||||
found by LAMMPS during a run.
|
||||
|
||||
NOTE: On some clusters with high-speed networks, using the fork()
|
||||
library calls (required by popen()) can interfere with the fast
|
||||
communication library and lead to simulations using compressed output
|
||||
or input to hang or crash. For selected operations, compressed file
|
||||
I/O is also available using a compression library instead, which is
|
||||
what the "COMPRESS package"_Packages_details.html#PKG-COMPRESS enables.
|
||||
|
||||
:line
|
||||
|
||||
Memory allocation alignment :h4,link(align)
|
||||
|
||||
This setting enables the use of the posix_memalign() call instead of
|
||||
malloc() when LAMMPS allocates large chunks or memory. This can make
|
||||
vector instructions on CPUs more efficient, if dynamically allocated
|
||||
memory is aligned on larger-than-default byte boundaries.
|
||||
On most current systems, the malloc() implementation returns
|
||||
pointers that are aligned to 16-byte boundaries. Using SSE vector
|
||||
instructions efficiently, however, requires memory blocks being
|
||||
aligned on 64-byte boundaries.
|
||||
|
||||
[CMake variable]:
|
||||
|
||||
-D LAMMPS_MEMALIGN=value # 0, 8, 16, 32, 64 (default) :pre
|
||||
|
||||
Use a LAMMPS_MEMALIGN value of 0 to disable using posix_memalign()
|
||||
and revert to using the malloc() C-library function instead. When
|
||||
compiling LAMMPS for Windows systems, malloc() will always be used
|
||||
and this setting ignored.
|
||||
|
||||
[Makefile.machine setting]:
|
||||
|
||||
LMP_INC = -DLAMMPS_MEMALIGN=value # 8, 16, 32, 64 :pre
|
||||
|
||||
Do not set -DLAMMPS_MEMALIGN, if you want to have memory allocated
|
||||
with the malloc() function call instead. -DLAMMPS_MEMALIGN [cannot]
|
||||
be used on Windows, as it does use different function calls for
|
||||
allocating aligned memory, that are not compatible with how LAMMPS
|
||||
manages its dynamical memory.
|
||||
|
||||
:line
|
||||
|
||||
Workaround for long long integers :h4,link(longlong)
|
||||
|
||||
If your system or MPI version does not recognize "long long" data
|
||||
types, the following setting will be needed. It converts "long long"
|
||||
to a "long" data type, which should be the desired 8-byte integer on
|
||||
those systems:
|
||||
|
||||
[CMake variable]:
|
||||
|
||||
-D LAMMPS_LONGLONG_TO_LONG=value # yes or no (default) :pre
|
||||
|
||||
[Makefile.machine setting]:
|
||||
|
||||
LMP_INC = -DLAMMPS_LONGLONG_TO_LONG :pre
|
||||
|
||||
:line
|
||||
|
||||
Exception handling when using LAMMPS as a library :h4,link(exceptions)
|
||||
|
||||
This setting is useful when external codes drive LAMMPS as a library.
|
||||
With this option enabled LAMMPS errors do not kill the caller.
|
||||
Instead, the call stack is unwound and control returns to the caller,
|
||||
e.g. to Python.
|
||||
|
||||
[CMake variable]:
|
||||
|
||||
-D LAMMPS_EXCEPTIONS=value # yes or no (default) :pre
|
||||
|
||||
[Makefile.machine setting]:
|
||||
|
||||
LMP_INC = -DLAMMPS_EXCEPTIONS :pre
|
||||
97
doc/src/Build_windows.txt
Normal file
@ -0,0 +1,97 @@
|
||||
"Higher level section"_Build.html - "LAMMPS WWW Site"_lws - "LAMMPS
|
||||
Documentation"_ld - "LAMMPS Commands"_lc :c
|
||||
|
||||
:link(lws,http://lammps.sandia.gov)
|
||||
:link(ld,Manual.html)
|
||||
:link(lc,Commands_all.html)
|
||||
|
||||
:line
|
||||
|
||||
Notes for building LAMMPS on Windows :h3
|
||||
|
||||
"General remarks"_#generic
|
||||
"Running Linux on Windows"_#linux
|
||||
"Using GNU GCC ported to Windows"_#gnu
|
||||
"Using a cross-compiler"_#cross :ul
|
||||
|
||||
:line
|
||||
|
||||
General remarks :h4,link(generic)
|
||||
|
||||
LAMMPS is developed and tested primarily on Linux machines. The vast
|
||||
majority of HPC clusters and supercomputers today runs on Linux as well.
|
||||
Thus portability to other platforms is desired, but not always achieved.
|
||||
The LAMMPS developers strongly rely on LAMMPS users giving feedback and
|
||||
providing assistance in resolving portability issues. This particularly
|
||||
true for compiling LAMMPS on Windows, since this platform has significant
|
||||
differences with some low-level functionality.
|
||||
|
||||
|
||||
Running Linux on Windows :h4,link(linux)
|
||||
|
||||
So before trying to build LAMMPS on Windows, please consider if using
|
||||
the pre-compiled Windows binary packages are sufficient for your needs
|
||||
(as an aside, those packages themselves are build on a Linux machine
|
||||
using cross-compilers). If it is necessary for your to compile LAMMPS
|
||||
on a Windows machine (e.g. because it is your main desktop), please also
|
||||
consider using a virtual machine software and run a Linux virtual machine,
|
||||
or - if have a recently updated Windows 10 installation - consider using
|
||||
the Windows subsystem for Linux, which allows to run a bash shell from
|
||||
Ubuntu and from there on, you can pretty much use that shell like you
|
||||
are running on an Ubuntu Linux machine (e.g. installing software via
|
||||
apt-get). For more details on that, please see "this tutorial"_Howto_bash.html
|
||||
|
||||
|
||||
Using GNU GCC ported to Windows :h4,link(gnu)
|
||||
|
||||
One option for compiling LAMMPS on Windows natively, that has been known
|
||||
to work in the past is to install a bash shell, unix shell utilities,
|
||||
perl, GNU make, and a GNU compiler ported to Windows. The Cygwin package
|
||||
provides a unix/linux interface to low-level Windows functions, so LAMMPS
|
||||
can be compiled on Windows. The necessary (minor) modifications to LAMMPS
|
||||
are included, but may not always up-to-date for recently added functionality
|
||||
and the corresponding new code. A machine makefile for using cygwin for
|
||||
the old build system is provided. The CMake build system is untested
|
||||
for this; you will have to request that makefiles are generated and
|
||||
manually set the compiler.
|
||||
|
||||
When compiling for Windows [not] set the -DLAMMPS_MEMALIGN define
|
||||
in the LMP_INC makefile variable and add -lwsock32 -lpsapi to the linker
|
||||
flags in LIB makefile variable. Try adding -static-libgcc or -static or
|
||||
both to the linker flags when your resulting LAMMPS Windows executable
|
||||
complains about missing .dll files. The CMake configuration should set
|
||||
this up automatically, but is untested.
|
||||
|
||||
In case of problems, you are recommended to contact somebody with
|
||||
experience in using cygwin. If you do come across portability problems
|
||||
requiring changes to the LAMMPS source code, or figure out corrections
|
||||
yourself, please report them on the lammps-users mailing list, or file
|
||||
them as an issue or pull request on the LAMMPS github project.
|
||||
|
||||
|
||||
Using a cross-compiler :h4,link(cross)
|
||||
|
||||
If you need to provide custom LAMMPS binaries for Windows, but do not
|
||||
need to do the compilation on Windows, please consider using a Linux
|
||||
to Windows cross-compiler. This is how currently the Windows binary
|
||||
packages are created by the LAMMPS developers. Because of that, this is
|
||||
probably the currently best tested and supported way to build LAMMPS
|
||||
executables for Windows. There are makefiles provided for the
|
||||
traditional build system, but CMake has also been successfully tested
|
||||
using the mingw32-cmake and mingw64-cmake wrappers that are bundled
|
||||
with the cross-compiler environment on Fedora machines.
|
||||
|
||||
Please keep in mind, though, that this only applies to compiling LAMMPS.
|
||||
Whether the resulting binaries do work correctly is no tested by the
|
||||
LAMMPS developers. We instead rely on the feedback of the users
|
||||
of these pre-compiled LAMMPS packages for Windows. We will try to resolve
|
||||
issues to the best of our abilities if we become aware of them. However
|
||||
this is subject to time constraints and focus on HPC platforms.
|
||||
|
||||
|
||||
Native Visual C++ support :h4,link(native)
|
||||
|
||||
Support for the Visual C++ compilers is currently not available. The
|
||||
CMake build system is capable of creating suitable a Visual Studio
|
||||
style build environment, but the LAMMPS code itself is not fully ported
|
||||
to support Visual C++. Volunteers to take on this task are welcome.
|
||||
53
doc/src/Commands.txt
Normal file
@ -0,0 +1,53 @@
|
||||
"Previous Section"_Run_head.html - "LAMMPS WWW Site"_lws -
|
||||
"LAMMPS Documentation"_ld - "LAMMPS Commands"_lc - "Next
|
||||
Section"_Packages.html :c
|
||||
|
||||
:link(lws,http://lammps.sandia.gov)
|
||||
:link(ld,Manual.html)
|
||||
:link(lc,Commands_all.html#comm)
|
||||
|
||||
:line
|
||||
|
||||
Commands :h2
|
||||
|
||||
These pages describe how a LAMMPS input script is formatted and the
|
||||
commands in it are used to define a LAMMPS simulation.
|
||||
|
||||
<!-- RST
|
||||
|
||||
.. toctree::
|
||||
:maxdepth: 1
|
||||
|
||||
Commands_input
|
||||
Commands_parse
|
||||
Commands_structure
|
||||
Commands_category
|
||||
|
||||
.. toctree::
|
||||
:maxdepth: 1
|
||||
|
||||
Commands_all
|
||||
Commands_fix
|
||||
Commands_compute
|
||||
Commands_pair
|
||||
Commands_bond
|
||||
Commands_kspace
|
||||
|
||||
END_RST -->
|
||||
|
||||
<!-- HTML_ONLY -->
|
||||
|
||||
"LAMMPS input scripts"_Commands_input.html
|
||||
"Parsing rules for input scripts"_Commands_parse.html
|
||||
"Input script structure"_Commands_structure.html
|
||||
"Commands by category"_Commands_category.html :all(b)
|
||||
|
||||
"All commands"_Commands_all.html
|
||||
"Fix commands"_Commands_fix.html
|
||||
"Compute commands"_Commands_compute.html
|
||||
"Pair commands"_Commands_pair.html
|
||||
"Bond, angle, dihedral, improper commands"_Commands_bond.html
|
||||
"KSpace solvers"_Commands_kspace.html :all(b)
|
||||
|
||||
<!-- END_HTML_ONLY -->
|
||||
|
||||
130
doc/src/Commands_all.txt
Normal file
@ -0,0 +1,130 @@
|
||||
"Higher level section"_Commands.html - "LAMMPS WWW Site"_lws - "LAMMPS
|
||||
Documentation"_ld - "LAMMPS Commands"_lc :c
|
||||
|
||||
:link(lws,http://lammps.sandia.gov)
|
||||
:link(ld,Manual.html)
|
||||
:link(lc,Commands_all.html)
|
||||
|
||||
:line
|
||||
|
||||
"All commands"_Commands_all.html,
|
||||
"Fix styles"_Commands_fix.html,
|
||||
"Compute styles"_Commands_compute.html,
|
||||
"Pair styles"_Commands_pair.html,
|
||||
"Bond styles"_Commands_bond.html,
|
||||
"Angle styles"_Commands_bond.html#angle,
|
||||
"Dihedral styles"_Commands_bond.html#dihedral,
|
||||
"Improper styles"_Commands_bond.html#improper,
|
||||
"KSpace styles"_Commands_kspace.html :tb(c=3,ea=c)
|
||||
|
||||
All commands :h3
|
||||
|
||||
An alphabetic list of all LAMMPS commands.
|
||||
|
||||
"angle_coeff"_angle_coeff.html,
|
||||
"angle_style"_angle_style.html,
|
||||
"atom_modify"_atom_modify.html,
|
||||
"atom_style"_atom_style.html,
|
||||
"balance"_balance.html,
|
||||
"bond_coeff"_bond_coeff.html,
|
||||
"bond_style"_bond_style.html,
|
||||
"bond_write"_bond_write.html,
|
||||
"boundary"_boundary.html,
|
||||
"box"_box.html,
|
||||
"change_box"_change_box.html,
|
||||
"clear"_clear.html,
|
||||
"comm_modify"_comm_modify.html,
|
||||
"comm_style"_comm_style.html,
|
||||
"compute"_compute.html,
|
||||
"compute_modify"_compute_modify.html,
|
||||
"create_atoms"_create_atoms.html,
|
||||
"create_bonds"_create_bonds.html,
|
||||
"create_box"_create_box.html,
|
||||
"delete_atoms"_delete_atoms.html,
|
||||
"delete_bonds"_delete_bonds.html,
|
||||
"dielectric"_dielectric.html,
|
||||
"dihedral_coeff"_dihedral_coeff.html,
|
||||
"dihedral_style"_dihedral_style.html,
|
||||
"dimension"_dimension.html,
|
||||
"displace_atoms"_displace_atoms.html,
|
||||
"dump"_dump.html,
|
||||
"dump image"_dump_image.html,
|
||||
"dump_modify"_dump_modify.html,
|
||||
"dump movie"_dump_image.html,
|
||||
"dump netcdf"_dump_netcdf.html,
|
||||
"dump netcdf/mpiio"_dump_netcdf.html,
|
||||
"dump vtk"_dump_vtk.html,
|
||||
"echo"_echo.html,
|
||||
"fix"_fix.html,
|
||||
"fix_modify"_fix_modify.html,
|
||||
"group"_group.html,
|
||||
"group2ndx"_group2ndx.html,
|
||||
"if"_if.html,
|
||||
"info"_info.html,
|
||||
"improper_coeff"_improper_coeff.html,
|
||||
"improper_style"_improper_style.html,
|
||||
"include"_include.html,
|
||||
"jump"_jump.html,
|
||||
"kspace_modify"_kspace_modify.html,
|
||||
"kspace_style"_kspace_style.html,
|
||||
"label"_label.html,
|
||||
"lattice"_lattice.html,
|
||||
"log"_log.html,
|
||||
"mass"_mass.html,
|
||||
"message"_message.html,
|
||||
"minimize"_minimize.html,
|
||||
"min_modify"_min_modify.html,
|
||||
"min_style"_min_style.html,
|
||||
"molecule"_molecule.html,
|
||||
"ndx2group"_group2ndx.html,
|
||||
"neb"_neb.html,
|
||||
"neigh_modify"_neigh_modify.html,
|
||||
"neighbor"_neighbor.html,
|
||||
"newton"_newton.html,
|
||||
"next"_next.html,
|
||||
"package"_package.html,
|
||||
"pair_coeff"_pair_coeff.html,
|
||||
"pair_modify"_pair_modify.html,
|
||||
"pair_style"_pair_style.html,
|
||||
"pair_write"_pair_write.html,
|
||||
"partition"_partition.html,
|
||||
"prd"_prd.html,
|
||||
"print"_print.html,
|
||||
"processors"_processors.html,
|
||||
"python"_python.html,
|
||||
"quit"_quit.html,
|
||||
"read_data"_read_data.html,
|
||||
"read_dump"_read_dump.html,
|
||||
"read_restart"_read_restart.html,
|
||||
"region"_region.html,
|
||||
"replicate"_replicate.html,
|
||||
"rerun"_rerun.html,
|
||||
"reset_ids"_reset_ids.html,
|
||||
"reset_timestep"_reset_timestep.html,
|
||||
"restart"_restart.html,
|
||||
"run"_run.html,
|
||||
"run_style"_run_style.html,
|
||||
"server"_server.html,
|
||||
"set"_set.html,
|
||||
"shell"_shell.html,
|
||||
"special_bonds"_special_bonds.html,
|
||||
"suffix"_suffix.html,
|
||||
"tad"_tad.html,
|
||||
"temper"_temper.html,
|
||||
"temper/grem"_temper_grem.html,
|
||||
"temper/npt"_temper_npt.html,
|
||||
"thermo"_thermo.html,
|
||||
"thermo_modify"_thermo_modify.html,
|
||||
"thermo_style"_thermo_style.html,
|
||||
"timer"_timer.html,
|
||||
"timestep"_timestep.html,
|
||||
"uncompute"_uncompute.html,
|
||||
"undump"_undump.html,
|
||||
"unfix"_unfix.html,
|
||||
"units"_units.html,
|
||||
"variable"_variable.html,
|
||||
"velocity"_velocity.html,
|
||||
"write_coeff"_write_coeff.html,
|
||||
"write_data"_write_data.html,
|
||||
"write_dump"_write_dump.html,
|
||||
"write_restart"_write_restart.html :tb(c=6,ea=c)
|
||||
127
doc/src/Commands_bond.txt
Normal file
@ -0,0 +1,127 @@
|
||||
"Higher level section"_Commands.html - "LAMMPS WWW Site"_lws - "LAMMPS
|
||||
Documentation"_ld - "LAMMPS Commands"_lc :c
|
||||
|
||||
:link(lws,http://lammps.sandia.gov)
|
||||
:link(ld,Manual.html)
|
||||
:link(lc,Commands_all.html)
|
||||
|
||||
"All commands"_Commands_all.html,
|
||||
"Fix styles"_Commands_fix.html,
|
||||
"Compute styles"_Commands_compute.html,
|
||||
"Pair styles"_Commands_pair.html,
|
||||
"Bond styles"_Commands_bond.html#bond,
|
||||
"Angle styles"_Commands_bond.html#angle,
|
||||
"Dihedral styles"_Commands_bond.html#dihedral,
|
||||
"Improper styles"_Commands_bond.html#improper,
|
||||
"KSpace styles"_Commands_kspace.html :tb(c=3,ea=c)
|
||||
|
||||
Bond, angle, dihedral, and improper commands :h3
|
||||
|
||||
:line
|
||||
|
||||
Bond_style potentials :h3,link(bond)
|
||||
|
||||
All LAMMPS "bond_style"_bond_style.html commands. Some styles have
|
||||
accelerated versions. This is indicated by additional letters in
|
||||
parenthesis: g = GPU, i = USER-INTEL, k = KOKKOS, o = USER-OMP, t =
|
||||
OPT.
|
||||
|
||||
"none"_bond_none.html,
|
||||
"zero"_bond_zero.html,
|
||||
"hybrid"_bond_hybrid.html :tb(c=3,ea=c)
|
||||
|
||||
"class2 (ko)"_bond_class2.html,
|
||||
"fene (iko)"_bond_fene.html,
|
||||
"fene/expand (o)"_bond_fene_expand.html,
|
||||
"gromos (o)"_bond_gromos.html,
|
||||
"harmonic (iko)"_bond_harmonic.html,
|
||||
"harmonic/shift (o)"_bond_harmonic_shift.html,
|
||||
"harmonic/shift/cut (o)"_bond_harmonic_shift_cut.html,
|
||||
"morse (o)"_bond_morse.html,
|
||||
"nonlinear (o)"_bond_nonlinear.html,
|
||||
"oxdna/fene"_bond_oxdna.html,
|
||||
"oxdna2/fene"_bond_oxdna.html,
|
||||
"quartic (o)"_bond_quartic.html,
|
||||
"table (o)"_bond_table.html :tb(c=4,ea=c)
|
||||
|
||||
:line
|
||||
|
||||
Angle_style potentials :h3,link(angle)
|
||||
|
||||
All LAMMPS "angle_style"_angle_style.html commands. Some styles have
|
||||
accelerated versions. This is indicated by additional letters in
|
||||
parenthesis: g = GPU, i = USER-INTEL, k = KOKKOS, o = USER-OMP, t =
|
||||
OPT.
|
||||
|
||||
"none"_angle_none.html,
|
||||
"zero"_angle_zero.html,
|
||||
"hybrid"_angle_hybrid.html :tb(c=3,ea=c)
|
||||
|
||||
"charmm (iko)"_angle_charmm.html,
|
||||
"class2 (ko)"_angle_class2.html,
|
||||
"class2/p6"_angle_class2.html,
|
||||
"cosine (o)"_angle_cosine.html,
|
||||
"cosine/buck6d"_angle_cosine_buck6d.html,
|
||||
"cosine/delta (o)"_angle_cosine_delta.html,
|
||||
"cosine/periodic (o)"_angle_cosine_periodic.html,
|
||||
"cosine/shift (o)"_angle_cosine_shift.html,
|
||||
"cosine/shift/exp (o)"_angle_cosine_shift_exp.html,
|
||||
"cosine/squared (o)"_angle_cosine_squared.html,
|
||||
"dipole (o)"_angle_dipole.html,
|
||||
"fourier (o)"_angle_fourier.html,
|
||||
"fourier/simple (o)"_angle_fourier_simple.html,
|
||||
"harmonic (iko)"_angle_harmonic.html,
|
||||
"quartic (o)"_angle_quartic.html,
|
||||
"sdk (o)"_angle_sdk.html,
|
||||
"table (o)"_angle_table.html :tb(c=4,ea=c)
|
||||
|
||||
:line
|
||||
|
||||
Dihedral_style potentials :h3,link(dihedral)
|
||||
|
||||
All LAMMPS "dihedral_style"_dihedral_style.html commands. Some styles
|
||||
have accelerated versions. This is indicated by additional letters in
|
||||
parenthesis: g = GPU, i = USER-INTEL, k = KOKKOS, o = USER-OMP, t =
|
||||
OPT.
|
||||
|
||||
"none"_dihedral_none.html,
|
||||
"zero"_dihedral_zero.html,
|
||||
"hybrid"_dihedral_hybrid.html :tb(c=3,ea=c)
|
||||
|
||||
"charmm (iko)"_dihedral_charmm.html,
|
||||
"charmmfsw"_dihedral_charmm.html,
|
||||
"class2 (ko)"_dihedral_class2.html,
|
||||
"cosine/shift/exp (o)"_dihedral_cosine_shift_exp.html,
|
||||
"fourier (io)"_dihedral_fourier.html,
|
||||
"harmonic (io)"_dihedral_harmonic.html,
|
||||
"helix (o)"_dihedral_helix.html,
|
||||
"multi/harmonic (o)"_dihedral_multi_harmonic.html,
|
||||
"nharmonic (o)"_dihedral_nharmonic.html,
|
||||
"opls (iko)"_dihedral_opls.html,
|
||||
"quadratic (o)"_dihedral_quadratic.html,
|
||||
"spherical"_dihedral_spherical.html,
|
||||
"table (o)"_dihedral_table.html,
|
||||
"table/cut"_dihedral_table_cut.html :tb(c=4,ea=c)
|
||||
|
||||
:line
|
||||
|
||||
Improper_style potentials :h3,link(improper)
|
||||
|
||||
All LAMMPS "improper_style"_improper_style.html commands. Some styles
|
||||
have accelerated versions. This is indicated by additional letters in
|
||||
parenthesis: g = GPU, i = USER-INTEL, k = KOKKOS, o = USER-OMP, t =
|
||||
OPT.
|
||||
|
||||
"none"_improper_none.html,
|
||||
"zero"_improper_zero.html,
|
||||
"hybrid"_improper_hybrid.html :tb(c=3,ea=c)
|
||||
|
||||
"class2 (ko)"_improper_class2.html,
|
||||
"cossq (o)"_improper_cossq.html,
|
||||
"cvff (io)"_improper_cvff.html,
|
||||
"distance"_improper_distance.html,
|
||||
"fourier (o)"_improper_fourier.html,
|
||||
"harmonic (iko)"_improper_harmonic.html,
|
||||
"inversion/harmonic"_improper_inversion_harmonic.html,
|
||||
"ring (o)"_improper_ring.html,
|
||||
"umbrella (o)"_improper_umbrella.html :tb(c=4,ea=c)
|
||||
141
doc/src/Commands_category.txt
Normal file
@ -0,0 +1,141 @@
|
||||
"Higher level section"_Commands.html - "LAMMPS WWW Site"_lws - "LAMMPS
|
||||
Documentation"_ld - "LAMMPS Commands"_lc :c
|
||||
|
||||
:link(lws,http://lammps.sandia.gov)
|
||||
:link(ld,Manual.html)
|
||||
:link(lc,Commands_all.html)
|
||||
|
||||
:line
|
||||
|
||||
Commands by category :h3
|
||||
|
||||
This page lists most of the LAMMPS commands, grouped by category. The
|
||||
"Commands all"_Commands_all.html doc page lists all commands
|
||||
alphabetically. It also includes long lists of style options for
|
||||
entries that appear in the following categories as a single command
|
||||
(fix, compute, pair, etc).
|
||||
|
||||
Initialization:
|
||||
|
||||
"newton"_newton.html,
|
||||
"package"_package.html,
|
||||
"processors"_processors.html,
|
||||
"suffix"_suffix.html,
|
||||
"units"_units.html :ul
|
||||
|
||||
Setup simulation box:
|
||||
|
||||
"boundary"_boundary.html,
|
||||
"box"_box.html,
|
||||
"change_box"_change_box.html,
|
||||
"create_box"_create_box.html,
|
||||
"dimension"_dimension.html,
|
||||
"lattice"_lattice.html,
|
||||
"region"_region.html :ul
|
||||
|
||||
Setup atoms:
|
||||
|
||||
"atom_modify"_atom_modify.html,
|
||||
"atom_style"_atom_style.html,
|
||||
"balance"_balance.html,
|
||||
"create_atoms"_create_atoms.html,
|
||||
"create_bonds"_create_bonds.html,
|
||||
"delete_atoms"_delete_atoms.html,
|
||||
"delete_bonds"_delete_bonds.html,
|
||||
"displace_atoms"_displace_atoms.html,
|
||||
"group"_group.html,
|
||||
"mass"_mass.html,
|
||||
"molecule"_molecule.html,
|
||||
"read_data"_read_data.html,
|
||||
"read_dump"_read_dump.html,
|
||||
"read_restart"_read_restart.html,
|
||||
"replicate"_replicate.html,
|
||||
"set"_set.html,
|
||||
"velocity"_velocity.html :ul
|
||||
|
||||
Force fields:
|
||||
|
||||
"angle_coeff"_angle_coeff.html,
|
||||
"angle_style"_angle_style.html,
|
||||
"bond_coeff"_bond_coeff.html,
|
||||
"bond_style"_bond_style.html,
|
||||
"bond_write"_bond_write.html,
|
||||
"dielectric"_dielectric.html,
|
||||
"dihedral_coeff"_dihedral_coeff.html,
|
||||
"dihedral_style"_dihedral_style.html,
|
||||
"improper_coeff"_improper_coeff.html,
|
||||
"improper_style"_improper_style.html,
|
||||
"kspace_modify"_kspace_modify.html,
|
||||
"kspace_style"_kspace_style.html,
|
||||
"pair_coeff"_pair_coeff.html,
|
||||
"pair_modify"_pair_modify.html,
|
||||
"pair_style"_pair_style.html,
|
||||
"pair_write"_pair_write.html,
|
||||
"special_bonds"_special_bonds.html :ul
|
||||
|
||||
Settings:
|
||||
|
||||
"comm_modify"_comm_modify.html,
|
||||
"comm_style"_comm_style.html,
|
||||
"info"_info.html,
|
||||
"min_modify"_min_modify.html,
|
||||
"min_style"_min_style.html,
|
||||
"neigh_modify"_neigh_modify.html,
|
||||
"neighbor"_neighbor.html,
|
||||
"partition"_partition.html,
|
||||
"reset_timestep"_reset_timestep.html,
|
||||
"run_style"_run_style.html,
|
||||
"timer"_timer.html,
|
||||
"timestep"_timestep.html :ul
|
||||
|
||||
Operations within timestepping (fixes) and diagnostics (computes):
|
||||
|
||||
"compute"_compute.html,
|
||||
"compute_modify"_compute_modify.html,
|
||||
"fix"_fix.html,
|
||||
"fix_modify"_fix_modify.html,
|
||||
"uncompute"_uncompute.html,
|
||||
"unfix"_unfix.html :ul
|
||||
|
||||
Output:
|
||||
|
||||
"dump image"_dump_image.html,
|
||||
"dump movie"_dump_image.html,
|
||||
"dump"_dump.html,
|
||||
"dump_modify"_dump_modify.html,
|
||||
"restart"_restart.html,
|
||||
"thermo"_thermo.html,
|
||||
"thermo_modify"_thermo_modify.html,
|
||||
"thermo_style"_thermo_style.html,
|
||||
"undump"_undump.html,
|
||||
"write_coeff"_write_coeff.html,
|
||||
"write_data"_write_data.html,
|
||||
"write_dump"_write_dump.html,
|
||||
"write_restart"_write_restart.html :ul
|
||||
|
||||
Actions:
|
||||
|
||||
"minimize"_minimize.html,
|
||||
"neb"_neb.html,
|
||||
"prd"_prd.html,
|
||||
"rerun"_rerun.html,
|
||||
"run"_run.html,
|
||||
"tad"_tad.html,
|
||||
"temper"_temper.html :ul
|
||||
|
||||
Input script control:
|
||||
|
||||
"clear"_clear.html,
|
||||
"echo"_echo.html,
|
||||
"if"_if.html,
|
||||
"include"_include.html,
|
||||
"jump"_jump.html,
|
||||
"label"_label.html,
|
||||
"log"_log.html,
|
||||
"next"_next.html,
|
||||
"print"_print.html,
|
||||
"python"_python.html,
|
||||
"quit"_quit.html,
|
||||
"shell"_shell.html,
|
||||
"variable"_variable.html :ul
|
||||
|
||||
161
doc/src/Commands_compute.txt
Normal file
@ -0,0 +1,161 @@
|
||||
"Higher level section"_Commands.html - "LAMMPS WWW Site"_lws - "LAMMPS
|
||||
Documentation"_ld - "LAMMPS Commands"_lc :c
|
||||
|
||||
:link(lws,http://lammps.sandia.gov)
|
||||
:link(ld,Manual.html)
|
||||
:link(lc,Commands_all.html)
|
||||
|
||||
:line
|
||||
|
||||
"All commands"_Commands_all.html,
|
||||
"Fix styles"_Commands_fix.html,
|
||||
"Compute styles"_Commands_compute.html,
|
||||
"Pair styles"_Commands_pair.html,
|
||||
"Bond styles"_Commands_bond.html,
|
||||
"Angle styles"_Commands_bond.html#angle,
|
||||
"Dihedral styles"_Commands_bond.html#dihedral,
|
||||
"Improper styles"_Commands_bond.html#improper,
|
||||
"KSpace styles"_Commands_kspace.html :tb(c=3,ea=c)
|
||||
|
||||
Compute commands :h3
|
||||
|
||||
An alphabetic list of all LAMMPS "compute"_compute.html commands.
|
||||
Some styles have accelerated versions. This is indicated by
|
||||
additional letters in parenthesis: g = GPU, i = USER-INTEL, k =
|
||||
KOKKOS, o = USER-OMP, t = OPT.
|
||||
|
||||
"ackland/atom"_compute_ackland_atom.html,
|
||||
"adf"_compute_adf.html,
|
||||
"aggregate/atom"_compute_cluster_atom.html,
|
||||
"angle"_compute_angle.html,
|
||||
"angle/local"_compute_angle_local.html,
|
||||
"angmom/chunk"_compute_angmom_chunk.html,
|
||||
"basal/atom"_compute_basal_atom.html,
|
||||
"body/local"_compute_body_local.html,
|
||||
"bond"_compute_bond.html,
|
||||
"bond/local"_compute_bond_local.html,
|
||||
"centro/atom"_compute_centro_atom.html,
|
||||
"chunk/atom"_compute_chunk_atom.html,
|
||||
"chunk/spread/atom"_compute_chunk_spread_atom.html,
|
||||
"cluster/atom"_compute_cluster_atom.html,
|
||||
"cna/atom"_compute_cna_atom.html,
|
||||
"cnp/atom"_compute_cnp_atom.html,
|
||||
"com"_compute_com.html,
|
||||
"com/chunk"_compute_com_chunk.html,
|
||||
"contact/atom"_compute_contact_atom.html,
|
||||
"coord/atom"_compute_coord_atom.html,
|
||||
"damage/atom"_compute_damage_atom.html,
|
||||
"dihedral"_compute_dihedral.html,
|
||||
"dihedral/local"_compute_dihedral_local.html,
|
||||
"dilatation/atom"_compute_dilatation_atom.html,
|
||||
"dipole/chunk"_compute_dipole_chunk.html,
|
||||
"displace/atom"_compute_displace_atom.html,
|
||||
"dpd"_compute_dpd.html,
|
||||
"dpd/atom"_compute_dpd_atom.html,
|
||||
"edpd/temp/atom"_compute_edpd_temp_atom.html,
|
||||
"entropy/atom"_compute_entropy_atom.html,
|
||||
"erotate/asphere"_compute_erotate_asphere.html,
|
||||
"erotate/rigid"_compute_erotate_rigid.html,
|
||||
"erotate/sphere"_compute_erotate_sphere.html,
|
||||
"erotate/sphere/atom"_compute_erotate_sphere_atom.html,
|
||||
"event/displace"_compute_event_displace.html,
|
||||
"fep"_compute_fep.html,
|
||||
"force/tally"_compute_tally.html,
|
||||
"fragment/atom"_compute_cluster_atom.html,
|
||||
"global/atom"_compute_global_atom.html,
|
||||
"group/group"_compute_group_group.html,
|
||||
"gyration"_compute_gyration.html,
|
||||
"gyration/chunk"_compute_gyration_chunk.html,
|
||||
"heat/flux"_compute_heat_flux.html,
|
||||
"heat/flux/tally"_compute_tally.html,
|
||||
"hexorder/atom"_compute_hexorder_atom.html,
|
||||
"improper"_compute_improper.html,
|
||||
"improper/local"_compute_improper_local.html,
|
||||
"inertia/chunk"_compute_inertia_chunk.html,
|
||||
"ke"_compute_ke.html,
|
||||
"ke/atom"_compute_ke_atom.html,
|
||||
"ke/atom/eff"_compute_ke_atom_eff.html,
|
||||
"ke/eff"_compute_ke_eff.html,
|
||||
"ke/rigid"_compute_ke_rigid.html,
|
||||
"meso/e/atom"_compute_meso_e_atom.html,
|
||||
"meso/rho/atom"_compute_meso_rho_atom.html,
|
||||
"meso/t/atom"_compute_meso_t_atom.html,
|
||||
"msd"_compute_msd.html,
|
||||
"msd/chunk"_compute_msd_chunk.html,
|
||||
"msd/nongauss"_compute_msd_nongauss.html,
|
||||
"omega/chunk"_compute_omega_chunk.html,
|
||||
"orientorder/atom"_compute_orientorder_atom.html,
|
||||
"pair"_compute_pair.html,
|
||||
"pair/local"_compute_pair_local.html,
|
||||
"pe"_compute_pe.html,
|
||||
"pe/atom"_compute_pe_atom.html,
|
||||
"pe/mol/tally"_compute_tally.html,
|
||||
"pe/tally"_compute_tally.html,
|
||||
"plasticity/atom"_compute_plasticity_atom.html,
|
||||
"pressure"_compute_pressure.html,
|
||||
"pressure/cylinder"_compute_pressure_cylinder.html,
|
||||
"pressure/uef"_compute_pressure_uef.html,
|
||||
"property/atom"_compute_property_atom.html,
|
||||
"property/chunk"_compute_property_chunk.html,
|
||||
"property/local"_compute_property_local.html,
|
||||
"ptm/atom"_compute_ptm_atom.html,
|
||||
"rdf"_compute_rdf.html,
|
||||
"reduce"_compute_reduce.html,
|
||||
"reduce/chunk"_compute_reduce_chunk.html,
|
||||
"reduce/region"_compute_reduce.html,
|
||||
"rigid/local"_compute_rigid_local.html,
|
||||
"saed"_compute_saed.html,
|
||||
"slice"_compute_slice.html,
|
||||
"smd/contact/radius"_compute_smd_contact_radius.html,
|
||||
"smd/damage"_compute_smd_damage.html,
|
||||
"smd/hourglass/error"_compute_smd_hourglass_error.html,
|
||||
"smd/internal/energy"_compute_smd_internal_energy.html,
|
||||
"smd/plastic/strain"_compute_smd_plastic_strain.html,
|
||||
"smd/plastic/strain/rate"_compute_smd_plastic_strain_rate.html,
|
||||
"smd/rho"_compute_smd_rho.html,
|
||||
"smd/tlsph/defgrad"_compute_smd_tlsph_defgrad.html,
|
||||
"smd/tlsph/dt"_compute_smd_tlsph_dt.html,
|
||||
"smd/tlsph/num/neighs"_compute_smd_tlsph_num_neighs.html,
|
||||
"smd/tlsph/shape"_compute_smd_tlsph_shape.html,
|
||||
"smd/tlsph/strain"_compute_smd_tlsph_strain.html,
|
||||
"smd/tlsph/strain/rate"_compute_smd_tlsph_strain_rate.html,
|
||||
"smd/tlsph/stress"_compute_smd_tlsph_stress.html,
|
||||
"smd/triangle/vertices"_compute_smd_triangle_vertices.html,
|
||||
"smd/ulsph/num/neighs"_compute_smd_ulsph_num_neighs.html,
|
||||
"smd/ulsph/strain"_compute_smd_ulsph_strain.html,
|
||||
"smd/ulsph/strain/rate"_compute_smd_ulsph_strain_rate.html,
|
||||
"smd/ulsph/stress"_compute_smd_ulsph_stress.html,
|
||||
"smd/vol"_compute_smd_vol.html,
|
||||
"sna/atom"_compute_sna_atom.html,
|
||||
"snad/atom"_compute_sna_atom.html,
|
||||
"snav/atom"_compute_sna_atom.html,
|
||||
"spin"_compute_spin.html,
|
||||
"stress/atom"_compute_stress_atom.html,
|
||||
"stress/mop"_compute_stress_mop.html,
|
||||
"stress/mop/profile"_compute_stress_mop.html,
|
||||
"stress/tally"_compute_tally.html,
|
||||
"tdpd/cc/atom"_compute_tdpd_cc_atom.html,
|
||||
"temp (k)"_compute_temp.html,
|
||||
"temp/asphere"_compute_temp_asphere.html,
|
||||
"temp/body"_compute_temp_body.html,
|
||||
"temp/chunk"_compute_temp_chunk.html,
|
||||
"temp/com"_compute_temp_com.html,
|
||||
"temp/cs"_compute_temp_cs.html,
|
||||
"temp/deform"_compute_temp_deform.html,
|
||||
"temp/deform/eff"_compute_temp_deform_eff.html,
|
||||
"temp/drude"_compute_temp_drude.html,
|
||||
"temp/eff"_compute_temp_eff.html,
|
||||
"temp/partial"_compute_temp_partial.html,
|
||||
"temp/profile"_compute_temp_profile.html,
|
||||
"temp/ramp"_compute_temp_ramp.html,
|
||||
"temp/region"_compute_temp_region.html,
|
||||
"temp/region/eff"_compute_temp_region_eff.html,
|
||||
"temp/rotate"_compute_temp_rotate.html,
|
||||
"temp/sphere"_compute_temp_sphere.html,
|
||||
"temp/uef"_compute_temp_uef.html,
|
||||
"ti"_compute_ti.html,
|
||||
"torque/chunk"_compute_torque_chunk.html,
|
||||
"vacf"_compute_vacf.html,
|
||||
"vcm/chunk"_compute_vcm_chunk.html,
|
||||
"voronoi/atom"_compute_voronoi_atom.html,
|
||||
"xrd"_compute_xrd.html :tb(c=6,ea=c)
|
||||
235
doc/src/Commands_fix.txt
Normal file
@ -0,0 +1,235 @@
|
||||
"Higher level section"_Commands.html - "LAMMPS WWW Site"_lws - "LAMMPS
|
||||
Documentation"_ld - "LAMMPS Commands"_lc :c
|
||||
|
||||
:link(lws,http://lammps.sandia.gov)
|
||||
:link(ld,Manual.html)
|
||||
:link(lc,Commands_all.html)
|
||||
|
||||
:line
|
||||
|
||||
"All commands"_Commands_all.html,
|
||||
"Fix styles"_Commands_fix.html,
|
||||
"Compute styles"_Commands_compute.html,
|
||||
"Pair styles"_Commands_pair.html,
|
||||
"Bond styles"_Commands_bond.html,
|
||||
"Angle styles"_Commands_bond.html#angle,
|
||||
"Dihedral styles"_Commands_bond.html#dihedral,
|
||||
"Improper styles"_Commands_bond.html#improper,
|
||||
"KSpace styles"_Commands_kspace.html :tb(c=3,ea=c)
|
||||
|
||||
Fix commands :h3
|
||||
|
||||
An alphabetic list of all LAMMPS "fix"_fix.html commands. Some styles
|
||||
have accelerated versions. This is indicated by additional letters in
|
||||
parenthesis: g = GPU, i = USER-INTEL, k = KOKKOS, o = USER-OMP, t =
|
||||
OPT.
|
||||
|
||||
"adapt"_fix_adapt.html,
|
||||
"adapt/fep"_fix_adapt_fep.html,
|
||||
"addforce"_fix_addforce.html,
|
||||
"addtorque"_fix_addtorque.html,
|
||||
"append/atoms"_fix_append_atoms.html,
|
||||
"atc"_fix_atc.html,
|
||||
"atom/swap"_fix_atom_swap.html,
|
||||
"ave/atom"_fix_ave_atom.html,
|
||||
"ave/chunk"_fix_ave_chunk.html,
|
||||
"ave/correlate"_fix_ave_correlate.html,
|
||||
"ave/correlate/long"_fix_ave_correlate_long.html,
|
||||
"ave/histo"_fix_ave_histo.html,
|
||||
"ave/histo/weight"_fix_ave_histo.html,
|
||||
"ave/time"_fix_ave_time.html,
|
||||
"aveforce"_fix_aveforce.html,
|
||||
"balance"_fix_balance.html,
|
||||
"bocs"_fix_bocs.html,
|
||||
"bond/break"_fix_bond_break.html,
|
||||
"bond/create"_fix_bond_create.html,
|
||||
"bond/react"_fix_bond_react.html,
|
||||
"bond/swap"_fix_bond_swap.html,
|
||||
"box/relax"_fix_box_relax.html,
|
||||
"client/md"_fix_client_md.html,
|
||||
"cmap"_fix_cmap.html,
|
||||
"colvars"_fix_colvars.html,
|
||||
"controller"_fix_controller.html,
|
||||
"deform (k)"_fix_deform.html,
|
||||
"deposit"_fix_deposit.html,
|
||||
"dpd/energy (k)"_fix_dpd_energy.html,
|
||||
"drag"_fix_drag.html,
|
||||
"drude"_fix_drude.html,
|
||||
"drude/transform/direct"_fix_drude_transform.html,
|
||||
"drude/transform/inverse"_fix_drude_transform.html,
|
||||
"dt/reset"_fix_dt_reset.html,
|
||||
"edpd/source"_fix_dpd_source.html,
|
||||
"efield"_fix_efield.html,
|
||||
"ehex"_fix_ehex.html,
|
||||
"enforce2d (k)"_fix_enforce2d.html,
|
||||
"eos/cv"_fix_eos_cv.html,
|
||||
"eos/table"_fix_eos_table.html,
|
||||
"eos/table/rx (k)"_fix_eos_table_rx.html,
|
||||
"evaporate"_fix_evaporate.html,
|
||||
"external"_fix_external.html,
|
||||
"ffl"_fix_ffl.html,
|
||||
"filter/corotate"_fix_filter_corotate.html,
|
||||
"flow/gauss"_fix_flow_gauss.html,
|
||||
"freeze (k)"_fix_freeze.html,
|
||||
"gcmc"_fix_gcmc.html,
|
||||
"gld"_fix_gld.html,
|
||||
"gle"_fix_gle.html,
|
||||
"gravity (ko)"_fix_gravity.html,
|
||||
"grem"_fix_grem.html,
|
||||
"halt"_fix_halt.html,
|
||||
"heat"_fix_heat.html,
|
||||
"imd"_fix_imd.html,
|
||||
"indent"_fix_indent.html,
|
||||
"ipi"_fix_ipi.html,
|
||||
"langevin (k)"_fix_langevin.html,
|
||||
"langevin/drude"_fix_langevin_drude.html,
|
||||
"langevin/eff"_fix_langevin_eff.html,
|
||||
"langevin/spin"_fix_langevin_spin.html,
|
||||
"latte"_fix_latte.html,
|
||||
"lb/fluid"_fix_lb_fluid.html,
|
||||
"lb/momentum"_fix_lb_momentum.html,
|
||||
"lb/pc"_fix_lb_pc.html,
|
||||
"lb/rigid/pc/sphere"_fix_lb_rigid_pc_sphere.html,
|
||||
"lb/viscous"_fix_lb_viscous.html,
|
||||
"lineforce"_fix_lineforce.html,
|
||||
"manifoldforce"_fix_manifoldforce.html,
|
||||
"meso"_fix_meso.html,
|
||||
"meso/move"_fix_meso_move.html,
|
||||
"meso/stationary"_fix_meso_stationary.html,
|
||||
"momentum (k)"_fix_momentum.html,
|
||||
"move"_fix_move.html,
|
||||
"mscg"_fix_mscg.html,
|
||||
"msst"_fix_msst.html,
|
||||
"mvv/dpd"_fix_mvv_dpd.html,
|
||||
"mvv/edpd"_fix_mvv_dpd.html,
|
||||
"mvv/tdpd"_fix_mvv_dpd.html,
|
||||
"neb"_fix_neb.html,
|
||||
"nph (ko)"_fix_nh.html,
|
||||
"nph/asphere (o)"_fix_nph_asphere.html,
|
||||
"nph/body"_fix_nph_body.html,
|
||||
"nph/eff"_fix_nh_eff.html,
|
||||
"nph/sphere (ko)"_fix_nph_sphere.html,
|
||||
"nphug (o)"_fix_nphug.html,
|
||||
"npt (iko)"_fix_nh.html,
|
||||
"npt/asphere (o)"_fix_npt_asphere.html,
|
||||
"npt/body"_fix_npt_body.html,
|
||||
"npt/eff"_fix_nh_eff.html,
|
||||
"npt/sphere (o)"_fix_npt_sphere.html,
|
||||
"npt/uef"_fix_nh_uef.html,
|
||||
"nve (iko)"_fix_nve.html,
|
||||
"nve/asphere (i)"_fix_nve_asphere.html,
|
||||
"nve/asphere/noforce"_fix_nve_asphere_noforce.html,
|
||||
"nve/awpmd"_fix_nve_awpmd.html,
|
||||
"nve/body"_fix_nve_body.html,
|
||||
"nve/dot"_fix_nve_dot.html,
|
||||
"nve/dotc/langevin"_fix_nve_dotc_langevin.html,
|
||||
"nve/eff"_fix_nve_eff.html,
|
||||
"nve/limit"_fix_nve_limit.html,
|
||||
"nve/line"_fix_nve_line.html,
|
||||
"nve/manifold/rattle"_fix_nve_manifold_rattle.html,
|
||||
"nve/noforce"_fix_nve_noforce.html,
|
||||
"nve/sphere (o)"_fix_nve_sphere.html,
|
||||
"nve/spin"_fix_nve_spin.html,
|
||||
"nve/tri"_fix_nve_tri.html,
|
||||
"nvk"_fix_nvk.html,
|
||||
"nvt (iko)"_fix_nh.html,
|
||||
"nvt/asphere (o)"_fix_nvt_asphere.html,
|
||||
"nvt/body"_fix_nvt_body.html,
|
||||
"nvt/eff"_fix_nh_eff.html,
|
||||
"nvt/manifold/rattle"_fix_nvt_manifold_rattle.html,
|
||||
"nvt/sllod (io)"_fix_nvt_sllod.html,
|
||||
"nvt/sllod/eff"_fix_nvt_sllod_eff.html,
|
||||
"nvt/sphere (o)"_fix_nvt_sphere.html,
|
||||
"nvt/uef"_fix_nh_uef.html,
|
||||
"oneway"_fix_oneway.html,
|
||||
"orient/bcc"_fix_orient.html,
|
||||
"orient/fcc"_fix_orient.html,
|
||||
"phonon"_fix_phonon.html,
|
||||
"pimd"_fix_pimd.html,
|
||||
"planeforce"_fix_planeforce.html,
|
||||
"poems"_fix_poems.html,
|
||||
"pour"_fix_pour.html,
|
||||
"precession/spin"_fix_precession_spin.html,
|
||||
"press/berendsen"_fix_press_berendsen.html,
|
||||
"print"_fix_print.html,
|
||||
"property/atom (k)"_fix_property_atom.html,
|
||||
"python/invoke"_fix_python_invoke.html,
|
||||
"python/move"_fix_python_move.html,
|
||||
"qbmsst"_fix_qbmsst.html,
|
||||
"qeq/comb (o)"_fix_qeq_comb.html,
|
||||
"qeq/dynamic"_fix_qeq.html,
|
||||
"qeq/fire"_fix_qeq.html,
|
||||
"qeq/point"_fix_qeq.html,
|
||||
"qeq/reax (ko)"_fix_qeq_reax.html,
|
||||
"qeq/shielded"_fix_qeq.html,
|
||||
"qeq/slater"_fix_qeq.html,
|
||||
"qmmm"_fix_qmmm.html,
|
||||
"qtb"_fix_qtb.html,
|
||||
"rattle"_fix_shake.html,
|
||||
"reax/bonds"_fix_reax_bonds.html,
|
||||
"reax/c/bonds (k)"_fix_reax_bonds.html,
|
||||
"reax/c/species (k)"_fix_reaxc_species.html,
|
||||
"recenter"_fix_recenter.html,
|
||||
"restrain"_fix_restrain.html,
|
||||
"rhok"_fix_rhok.html,
|
||||
"rigid (o)"_fix_rigid.html,
|
||||
"rigid/meso"_fix_rigid_meso.html,
|
||||
"rigid/nph (o)"_fix_rigid.html,
|
||||
"rigid/nph/small"_fix_rigid.html,
|
||||
"rigid/npt (o)"_fix_rigid.html,
|
||||
"rigid/npt/small"_fix_rigid.html,
|
||||
"rigid/nve (o)"_fix_rigid.html,
|
||||
"rigid/nve/small"_fix_rigid.html,
|
||||
"rigid/nvt (o)"_fix_rigid.html,
|
||||
"rigid/nvt/small"_fix_rigid.html,
|
||||
"rigid/small (o)"_fix_rigid.html,
|
||||
"rx (k)"_fix_rx.html,
|
||||
"saed/vtk"_fix_saed_vtk.html,
|
||||
"setforce (k)"_fix_setforce.html,
|
||||
"shake"_fix_shake.html,
|
||||
"shardlow (k)"_fix_shardlow.html,
|
||||
"smd"_fix_smd.html,
|
||||
"smd/adjust_dt"_fix_smd_adjust_dt.html,
|
||||
"smd/integrate_tlsph"_fix_smd_integrate_tlsph.html,
|
||||
"smd/integrate_ulsph"_fix_smd_integrate_ulsph.html,
|
||||
"smd/move_tri_surf"_fix_smd_move_triangulated_surface.html,
|
||||
"smd/setvel"_fix_smd_setvel.html,
|
||||
"smd/wall_surface"_fix_smd_wall_surface.html,
|
||||
"spring"_fix_spring.html,
|
||||
"spring/chunk"_fix_spring_chunk.html,
|
||||
"spring/rg"_fix_spring_rg.html,
|
||||
"spring/self"_fix_spring_self.html,
|
||||
"srd"_fix_srd.html,
|
||||
"store/force"_fix_store_force.html,
|
||||
"store/state"_fix_store_state.html,
|
||||
"tdpd/source"_fix_dpd_source.html,
|
||||
"temp/berendsen"_fix_temp_berendsen.html,
|
||||
"temp/csld"_fix_temp_csvr.html,
|
||||
"temp/csvr"_fix_temp_csvr.html,
|
||||
"temp/rescale"_fix_temp_rescale.html,
|
||||
"temp/rescale/eff"_fix_temp_rescale_eff.html,
|
||||
"tfmc"_fix_tfmc.html,
|
||||
"thermal/conductivity"_fix_thermal_conductivity.html,
|
||||
"ti/spring"_fix_ti_spring.html,
|
||||
"tmd"_fix_tmd.html,
|
||||
"ttm"_fix_ttm.html,
|
||||
"ttm/mod"_fix_ttm.html,
|
||||
"tune/kspace"_fix_tune_kspace.html,
|
||||
"vector"_fix_vector.html,
|
||||
"viscosity"_fix_viscosity.html,
|
||||
"viscous"_fix_viscous.html,
|
||||
"wall/body/polygon"_fix_wall_body_polygon.html,
|
||||
"wall/body/polyhedron"_fix_wall_body_polyhedron.html,
|
||||
"wall/colloid"_fix_wall.html,
|
||||
"wall/ees"_fix_wall_ees.html,
|
||||
"wall/gran (o)"_fix_wall_gran.html,
|
||||
"wall/gran/region"_fix_wall_gran_region.html,
|
||||
"wall/harmonic"_fix_wall.html,
|
||||
"wall/lj1043"_fix_wall.html,
|
||||
"wall/lj126"_fix_wall.html,
|
||||
"wall/lj93 (k)"_fix_wall.html,
|
||||
"wall/piston"_fix_wall_piston.html,
|
||||
"wall/reflect (k)"_fix_wall_reflect.html,
|
||||
"wall/region"_fix_wall_region.html,
|
||||
"wall/region/ees"_fix_wall_ees.html,
|
||||
"wall/srd"_fix_wall_srd.html :tb(c=8,ea=c)
|
||||
60
doc/src/Commands_input.txt
Normal file
@ -0,0 +1,60 @@
|
||||
"Higher level section"_Commands.html - "LAMMPS WWW Site"_lws - "LAMMPS
|
||||
Documentation"_ld - "LAMMPS Commands"_lc :c
|
||||
|
||||
:link(lws,http://lammps.sandia.gov)
|
||||
:link(ld,Manual.html)
|
||||
:link(lc,Commands_all.html)
|
||||
|
||||
:line
|
||||
|
||||
LAMMPS input scripts :h3
|
||||
|
||||
LAMMPS executes by reading commands from a input script (text file),
|
||||
one line at a time. When the input script ends, LAMMPS exits. Each
|
||||
command causes LAMMPS to take some action. It may set an internal
|
||||
variable, read in a file, or run a simulation. Most commands have
|
||||
default settings, which means you only need to use the command if you
|
||||
wish to change the default.
|
||||
|
||||
In many cases, the ordering of commands in an input script is not
|
||||
important. However the following rules apply:
|
||||
|
||||
(1) LAMMPS does not read your entire input script and then perform a
|
||||
simulation with all the settings. Rather, the input script is read
|
||||
one line at a time and each command takes effect when it is read.
|
||||
Thus this sequence of commands:
|
||||
|
||||
timestep 0.5
|
||||
run 100
|
||||
run 100 :pre
|
||||
|
||||
does something different than this sequence:
|
||||
|
||||
run 100
|
||||
timestep 0.5
|
||||
run 100 :pre
|
||||
|
||||
In the first case, the specified timestep (0.5 fs) is used for two
|
||||
simulations of 100 timesteps each. In the 2nd case, the default
|
||||
timestep (1.0 fs) is used for the 1st 100 step simulation and a 0.5 fs
|
||||
timestep is used for the 2nd one.
|
||||
|
||||
(2) Some commands are only valid when they follow other commands. For
|
||||
example you cannot set the temperature of a group of atoms until atoms
|
||||
have been defined and a group command is used to define which atoms
|
||||
belong to the group.
|
||||
|
||||
(3) Sometimes command B will use values that can be set by command A.
|
||||
This means command A must precede command B in the input script if it
|
||||
is to have the desired effect. For example, the
|
||||
"read_data"_read_data.html command initializes the system by setting
|
||||
up the simulation box and assigning atoms to processors. If default
|
||||
values are not desired, the "processors"_processors.html and
|
||||
"boundary"_boundary.html commands need to be used before read_data to
|
||||
tell LAMMPS how to map processors to the simulation box.
|
||||
|
||||
Many input script errors are detected by LAMMPS and an ERROR or
|
||||
WARNING message is printed. The "Errors"_Errors.html doc page gives
|
||||
more information on what errors mean. The documentation for each
|
||||
command lists restrictions on how the command can be used.
|
||||
|
||||
37
doc/src/Commands_kspace.txt
Normal file
@ -0,0 +1,37 @@
|
||||
"Higher level section"_Commands.html - "LAMMPS WWW Site"_lws - "LAMMPS
|
||||
Documentation"_ld - "LAMMPS Commands"_lc :c
|
||||
|
||||
:link(lws,http://lammps.sandia.gov)
|
||||
:link(ld,Manual.html)
|
||||
:link(lc,Commands.html)
|
||||
|
||||
:line
|
||||
|
||||
"All commands"_Commands_all.html,
|
||||
"Fix styles"_Commands_fix.html,
|
||||
"Compute styles"_Commands_compute.html,
|
||||
"Pair styles"_Commands_pair.html,
|
||||
"Bond styles"_Commands_bond.html,
|
||||
"Angle styles"_Commands_bond.html#angle,
|
||||
"Dihedral styles"_Commands_bond.html#dihedral,
|
||||
"Improper styles"_Commands_bond.html#improper,
|
||||
"KSpace styles"_Commands_kspace.html :tb(c=3,ea=c)
|
||||
|
||||
KSpace solvers :h3
|
||||
|
||||
All LAMMPS "kspace_style"_kspace_style.html solvers. Some styles have
|
||||
accelerated versions. This is indicated by additional letters in
|
||||
parenthesis: g = GPU, i = USER-INTEL, k = KOKKOS, o = USER-OMP, t =
|
||||
OPT.
|
||||
|
||||
"ewald (o)"_kspace_style.html,
|
||||
"ewald/disp"_kspace_style.html,
|
||||
"msm (o)"_kspace_style.html,
|
||||
"msm/cg (o)"_kspace_style.html,
|
||||
"pppm (gok)"_kspace_style.html,
|
||||
"pppm/cg (o)"_kspace_style.html,
|
||||
"pppm/disp (i)"_kspace_style.html,
|
||||
"pppm/disp/tip4p"_kspace_style.html,
|
||||
"pppm/stagger"_kspace_style.html,
|
||||
"pppm/tip4p (o)"_kspace_style.html,
|
||||
"scafacos"_kspace_style.html :tb(c=4,ea=c)
|
||||
240
doc/src/Commands_pair.txt
Normal file
@ -0,0 +1,240 @@
|
||||
"Higher level section"_Commands.html - "LAMMPS WWW Site"_lws - "LAMMPS
|
||||
Documentation"_ld - "LAMMPS Commands"_lc :c
|
||||
|
||||
:link(lws,http://lammps.sandia.gov)
|
||||
:link(ld,Manual.html)
|
||||
:link(lc,Commands_all.html)
|
||||
|
||||
:line
|
||||
|
||||
"All commands"_Commands_all.html,
|
||||
"Fix styles"_Commands_fix.html,
|
||||
"Compute styles"_Commands_compute.html,
|
||||
"Pair styles"_Commands_pair.html,
|
||||
"Bond styles"_Commands_bond.html,
|
||||
"Angle styles"_Commands_bond.html#angle,
|
||||
"Dihedral styles"_Commands_bond.html#dihedral,
|
||||
"Improper styles"_Commands_bond.html#improper,
|
||||
"KSpace styles"_Commands_kspace.html :tb(c=3,ea=c)
|
||||
|
||||
Pair_style potentials :h3
|
||||
|
||||
All LAMMPS "pair_style"_pair_style.html commands. Some styles have
|
||||
accelerated versions. This is indicated by additional letters in
|
||||
parenthesis: g = GPU, i = USER-INTEL, k = KOKKOS, o = USER-OMP, t =
|
||||
OPT.
|
||||
|
||||
"none"_pair_none.html,
|
||||
"zero"_pair_zero.html,
|
||||
"hybrid (k)"_pair_hybrid.html,
|
||||
"hybrid/overlay (k)"_pair_hybrid.html :tb(c=4,ea=c)
|
||||
|
||||
"adp (o)"_pair_adp.html,
|
||||
"agni (o)"_pair_agni.html,
|
||||
"airebo (io)"_pair_airebo.html,
|
||||
"airebo/morse (io)"_pair_airebo.html,
|
||||
"atm"_pair_atm.html,
|
||||
"awpmd/cut"_pair_awpmd.html,
|
||||
"beck (go)"_pair_beck.html,
|
||||
"body/nparticle"_pair_body_nparticle.html,
|
||||
"body/rounded/polygon"_pair_body_rounded_polygon.html,
|
||||
"body/rounded/polyhedron"_pair_body_rounded_polyhedron.html,
|
||||
"bop"_pair_bop.html,
|
||||
"born (go)"_pair_born.html,
|
||||
"born/coul/dsf"_pair_born.html,
|
||||
"born/coul/dsf/cs"_pair_cs.html,
|
||||
"born/coul/long (go)"_pair_born.html,
|
||||
"born/coul/long/cs (g)"_pair_cs.html,
|
||||
"born/coul/msm (o)"_pair_born.html,
|
||||
"born/coul/wolf (go)"_pair_born.html,
|
||||
"born/coul/wolf/cs (g)"_pair_cs.html,
|
||||
"brownian (o)"_pair_brownian.html,
|
||||
"brownian/poly (o)"_pair_brownian.html,
|
||||
"buck (giko)"_pair_buck.html,
|
||||
"buck/coul/cut (giko)"_pair_buck.html,
|
||||
"buck/coul/long (giko)"_pair_buck.html,
|
||||
"buck/coul/long/cs"_pair_cs.html,
|
||||
"buck/coul/msm (o)"_pair_buck.html,
|
||||
"buck/long/coul/long (o)"_pair_buck_long.html,
|
||||
"buck/mdf"_pair_mdf.html,
|
||||
"buck6d/coul/gauss/dsf"_pair_buck6d_coul_gauss.html,
|
||||
"buck6d/coul/gauss/long"_pair_buck6d_coul_gauss.html,
|
||||
"colloid (go)"_pair_colloid.html,
|
||||
"comb (o)"_pair_comb.html,
|
||||
"comb3"_pair_comb.html,
|
||||
"coul/cut (gko)"_pair_coul.html,
|
||||
"coul/cut/soft (o)"_pair_lj_soft.html,
|
||||
"coul/debye (gko)"_pair_coul.html,
|
||||
"coul/diel (o)"_pair_coul_diel.html,
|
||||
"coul/dsf (gko)"_pair_coul.html,
|
||||
"coul/long (gko)"_pair_coul.html,
|
||||
"coul/long/cs (g)"_pair_cs.html,
|
||||
"coul/long/soft (o)"_pair_lj_soft.html,
|
||||
"coul/msm (o)"_pair_coul.html,
|
||||
"coul/shield"_pair_coul_shield.html,
|
||||
"coul/streitz"_pair_coul.html,
|
||||
"coul/wolf (ko)"_pair_coul.html,
|
||||
"coul/wolf/cs"_pair_cs.html,
|
||||
"dpd (gio)"_pair_dpd.html,
|
||||
"dpd/fdt"_pair_dpd_fdt.html,
|
||||
"dpd/fdt/energy (k)"_pair_dpd_fdt.html,
|
||||
"dpd/tstat (go)"_pair_dpd.html,
|
||||
"dsmc"_pair_dsmc.html,
|
||||
"eam (gikot)"_pair_eam.html,
|
||||
"eam/alloy (gikot)"_pair_eam.html,
|
||||
"eam/cd (o)"_pair_eam.html,
|
||||
"eam/cd/old (o)"_pair_eam.html,
|
||||
"eam/fs (gikot)"_pair_eam.html,
|
||||
"edip (o)"_pair_edip.html,
|
||||
"edip/multi"_pair_edip.html,
|
||||
"edpd"_pair_meso.html,
|
||||
"eff/cut"_pair_eff.html,
|
||||
"eim (o)"_pair_eim.html,
|
||||
"exp6/rx (k)"_pair_exp6_rx.html,
|
||||
"extep"_pair_extep.html,
|
||||
"gauss (go)"_pair_gauss.html,
|
||||
"gauss/cut (o)"_pair_gauss.html,
|
||||
"gayberne (gio)"_pair_gayberne.html,
|
||||
"gran/hertz/history (o)"_pair_gran.html,
|
||||
"gran/hooke (o)"_pair_gran.html,
|
||||
"gran/hooke/history (ko)"_pair_gran.html,
|
||||
"gw"_pair_gw.html,
|
||||
"gw/zbl"_pair_gw.html,
|
||||
"hbond/dreiding/lj (o)"_pair_hbond_dreiding.html,
|
||||
"hbond/dreiding/morse (o)"_pair_hbond_dreiding.html,
|
||||
"ilp/graphene/hbn"_pair_ilp_graphene_hbn.html,
|
||||
"kim"_pair_kim.html,
|
||||
"kolmogorov/crespi/full"_pair_kolmogorov_crespi_full.html,
|
||||
"kolmogorov/crespi/z"_pair_kolmogorov_crespi_z.html,
|
||||
"lcbop"_pair_lcbop.html,
|
||||
"lennard/mdf"_pair_mdf.html,
|
||||
"line/lj"_pair_line_lj.html,
|
||||
"list"_pair_list.html,
|
||||
"lj/charmm/coul/charmm (iko)"_pair_charmm.html,
|
||||
"lj/charmm/coul/charmm/implicit (ko)"_pair_charmm.html,
|
||||
"lj/charmm/coul/long (gikot)"_pair_charmm.html,
|
||||
"lj/charmm/coul/long/soft (o)"_pair_lj_soft.html,
|
||||
"lj/charmm/coul/msm (o)"_pair_charmm.html,
|
||||
"lj/charmmfsw/coul/charmmfsh"_pair_charmm.html,
|
||||
"lj/charmmfsw/coul/long"_pair_charmm.html,
|
||||
"lj/class2 (gko)"_pair_class2.html,
|
||||
"lj/class2/coul/cut (ko)"_pair_class2.html,
|
||||
"lj/class2/coul/long (gko)"_pair_class2.html,
|
||||
"lj/cubic (go)"_pair_lj_cubic.html,
|
||||
"lj/cut (gikot)"_pair_lj.html,
|
||||
"lj/cut/coul/cut (gko)"_pair_lj.html,
|
||||
"lj/cut/coul/cut/soft (o)"_pair_lj_soft.html,
|
||||
"lj/cut/coul/debye (gko)"_pair_lj.html,
|
||||
"lj/cut/coul/dsf (gko)"_pair_lj.html,
|
||||
"lj/cut/coul/long (gikot)"_pair_lj.html,
|
||||
"lj/cut/coul/long/cs"_pair_cs.html,
|
||||
"lj/cut/coul/long/soft (o)"_pair_lj_soft.html,
|
||||
"lj/cut/coul/msm (go)"_pair_lj.html,
|
||||
"lj/cut/coul/wolf (o)"_pair_lj.html,
|
||||
"lj/cut/dipole/cut (go)"_pair_dipole.html,
|
||||
"lj/cut/dipole/long (g)"_pair_dipole.html,
|
||||
"lj/cut/dipole/sf (go)"_pair_dipole.html,
|
||||
"lj/cut/soft (o)"_pair_lj_soft.html,
|
||||
"lj/cut/thole/long (o)"_pair_thole.html,
|
||||
"lj/cut/tip4p/cut (o)"_pair_lj.html,
|
||||
"lj/cut/tip4p/long (ot)"_pair_lj.html,
|
||||
"lj/cut/tip4p/long/soft (o)"_pair_lj_soft.html,
|
||||
"lj/expand (gko)"_pair_lj_expand.html,
|
||||
"lj/expand/coul/long (g)"_pair_lj_expand.html,
|
||||
"lj/gromacs (gko)"_pair_gromacs.html,
|
||||
"lj/gromacs/coul/gromacs (ko)"_pair_gromacs.html,
|
||||
"lj/long/coul/long (iot)"_pair_lj_long.html,
|
||||
"lj/long/dipole/long"_pair_dipole.html,
|
||||
"lj/long/tip4p/long (o)"_pair_lj_long.html,
|
||||
"lj/mdf"_pair_mdf.html,
|
||||
"lj/sdk (gko)"_pair_sdk.html,
|
||||
"lj/sdk/coul/long (go)"_pair_sdk.html,
|
||||
"lj/sdk/coul/msm (o)"_pair_sdk.html,
|
||||
"lj/sf/dipole/sf (go)"_pair_dipole.html,
|
||||
"lj/smooth (o)"_pair_lj_smooth.html,
|
||||
"lj/smooth/linear (o)"_pair_lj_smooth_linear.html,
|
||||
"lj96/cut (go)"_pair_lj96.html,
|
||||
"lubricate (o)"_pair_lubricate.html,
|
||||
"lubricate/poly (o)"_pair_lubricate.html,
|
||||
"lubricateU"_pair_lubricateU.html,
|
||||
"lubricateU/poly"_pair_lubricateU.html,
|
||||
"mdpd"_pair_meso.html,
|
||||
"mdpd/rhosum"_pair_meso.html,
|
||||
"meam"_pair_meam.html,
|
||||
"meam/c"_pair_meam.html,
|
||||
"meam/spline (o)"_pair_meam_spline.html,
|
||||
"meam/sw/spline"_pair_meam_sw_spline.html,
|
||||
"mgpt"_pair_mgpt.html,
|
||||
"mie/cut (g)"_pair_mie.html,
|
||||
"momb"_pair_momb.html,
|
||||
"morse (gkot)"_pair_morse.html,
|
||||
"morse/smooth/linear (o)"_pair_morse.html,
|
||||
"morse/soft"_pair_morse.html,
|
||||
"multi/lucy"_pair_multi_lucy.html,
|
||||
"multi/lucy/rx (k)"_pair_multi_lucy_rx.html,
|
||||
"nb3b/harmonic"_pair_nb3b_harmonic.html,
|
||||
"nm/cut (o)"_pair_nm.html,
|
||||
"nm/cut/coul/cut (o)"_pair_nm.html,
|
||||
"nm/cut/coul/long (o)"_pair_nm.html,
|
||||
"oxdna/coaxstk"_pair_oxdna.html,
|
||||
"oxdna/excv"_pair_oxdna.html,
|
||||
"oxdna/hbond"_pair_oxdna.html,
|
||||
"oxdna/stk"_pair_oxdna.html,
|
||||
"oxdna/xstk"_pair_oxdna.html,
|
||||
"oxdna2/coaxstk"_pair_oxdna2.html,
|
||||
"oxdna2/dh"_pair_oxdna2.html,
|
||||
"oxdna2/excv"_pair_oxdna2.html,
|
||||
"oxdna2/hbond"_pair_oxdna2.html,
|
||||
"oxdna2/stk"_pair_oxdna2.html,
|
||||
"oxdna2/xstk"_pair_oxdna2.html,
|
||||
"peri/eps"_pair_peri.html,
|
||||
"peri/lps (o)"_pair_peri.html,
|
||||
"peri/pmb (o)"_pair_peri.html,
|
||||
"peri/ves"_pair_peri.html,
|
||||
"polymorphic"_pair_polymorphic.html,
|
||||
"python"_pair_python.html,
|
||||
"quip"_pair_quip.html,
|
||||
"reax"_pair_reax.html,
|
||||
"reax/c (ko)"_pair_reaxc.html,
|
||||
"rebo (io)"_pair_airebo.html,
|
||||
"resquared (go)"_pair_resquared.html,
|
||||
"sdpd/taitwater/isothermal"_pair_sdpd_taitwater_isothermal.html,
|
||||
"smd/hertz"_pair_smd_hertz.html,
|
||||
"smd/tlsph"_pair_smd_tlsph.html,
|
||||
"smd/tri_surface"_pair_smd_triangulated_surface.html,
|
||||
"smd/ulsph"_pair_smd_ulsph.html,
|
||||
"smtbq"_pair_smtbq.html,
|
||||
"snap (k)"_pair_snap.html,
|
||||
"snap (k)"_pair_snap.html,
|
||||
"soft (go)"_pair_soft.html,
|
||||
"sph/heatconduction"_pair_sph_heatconduction.html,
|
||||
"sph/idealgas"_pair_sph_idealgas.html,
|
||||
"sph/lj"_pair_sph_lj.html,
|
||||
"sph/rhosum"_pair_sph_rhosum.html,
|
||||
"sph/taitwater"_pair_sph_taitwater.html,
|
||||
"sph/taitwater/morris"_pair_sph_taitwater_morris.html,
|
||||
"spin/dmi"_pair_spin_dmi.html,
|
||||
"spin/exchange"_pair_spin_exchange.html,
|
||||
"spin/magelec"_pair_spin_magelec.html,
|
||||
"spin/neel"_pair_spin_neel.html,
|
||||
"srp"_pair_srp.html,
|
||||
"sw (giko)"_pair_sw.html,
|
||||
"table (gko)"_pair_table.html,
|
||||
"table/rx (k)"_pair_table_rx.html,
|
||||
"tdpd"_pair_meso.html,
|
||||
"tersoff (giko)"_pair_tersoff.html,
|
||||
"tersoff/mod (gko)"_pair_tersoff_mod.html,
|
||||
"tersoff/mod/c (o)"_pair_tersoff_mod.html,
|
||||
"tersoff/table (o)"_pair_tersoff.html,
|
||||
"tersoff/zbl (gko)"_pair_tersoff_zbl.html,
|
||||
"thole"_pair_thole.html,
|
||||
"tip4p/cut (o)"_pair_coul.html,
|
||||
"tip4p/long (o)"_pair_coul.html,
|
||||
"tip4p/long/soft (o)"_pair_lj_soft.html,
|
||||
"tri/lj"_pair_tri_lj.html,
|
||||
"ufm (got)"_pair_ufm.html,
|
||||
"vashishta (gko)"_pair_vashishta.html,
|
||||
"vashishta/table (o)"_pair_vashishta.html,
|
||||
"yukawa (gko)"_pair_yukawa.html,
|
||||
"yukawa/colloid (go)"_pair_yukawa_colloid.html,
|
||||
"zbl (gko)"_pair_zbl.html :tb(c=4,ea=c)
|
||||
136
doc/src/Commands_parse.txt
Normal file
@ -0,0 +1,136 @@
|
||||
"Higher level section"_Commands.html - "LAMMPS WWW Site"_lws - "LAMMPS
|
||||
Documentation"_ld - "LAMMPS Commands"_lc :c
|
||||
|
||||
:link(lws,http://lammps.sandia.gov)
|
||||
:link(ld,Manual.html)
|
||||
:link(lc,Commands_all.html)
|
||||
|
||||
:line
|
||||
|
||||
Parsing rules for input scripts :h3
|
||||
|
||||
Each non-blank line in the input script is treated as a command.
|
||||
LAMMPS commands are case sensitive. Command names are lower-case, as
|
||||
are specified command arguments. Upper case letters may be used in
|
||||
file names or user-chosen ID strings.
|
||||
|
||||
Here are 6 rules for how each line in the input script is parsed by
|
||||
LAMMPS:
|
||||
|
||||
(1) If the last printable character on the line is a "&" character,
|
||||
the command is assumed to continue on the next line. The next line is
|
||||
concatenated to the previous line by removing the "&" character and
|
||||
line break. This allows long commands to be continued across two or
|
||||
more lines. See the discussion of triple quotes in (6) for how to
|
||||
continue a command across multiple line without using "&" characters.
|
||||
|
||||
(2) All characters from the first "#" character onward are treated as
|
||||
comment and discarded. See an exception in (6). Note that a
|
||||
comment after a trailing "&" character will prevent the command from
|
||||
continuing on the next line. Also note that for multi-line commands a
|
||||
single leading "#" will comment out the entire command.
|
||||
|
||||
(3) The line is searched repeatedly for $ characters, which indicate
|
||||
variables that are replaced with a text string. See an exception in
|
||||
(6).
|
||||
|
||||
If the $ is followed by curly brackets, then the variable name is the
|
||||
text inside the curly brackets. If no curly brackets follow the $,
|
||||
then the variable name is the single character immediately following
|
||||
the $. Thus $\{myTemp\} and $x refer to variable names "myTemp" and
|
||||
"x".
|
||||
|
||||
How the variable is converted to a text string depends on what style
|
||||
of variable it is; see the "variable"_variable.html doc page for details.
|
||||
It can be a variable that stores multiple text strings, and return one
|
||||
of them. The returned text string can be multiple "words" (space
|
||||
separated) which will then be interpreted as multiple arguments in the
|
||||
input command. The variable can also store a numeric formula which
|
||||
will be evaluated and its numeric result returned as a string.
|
||||
|
||||
As a special case, if the $ is followed by parenthesis, then the text
|
||||
inside the parenthesis is treated as an "immediate" variable and
|
||||
evaluated as an "equal-style variable"_variable.html. This is a way
|
||||
to use numeric formulas in an input script without having to assign
|
||||
them to variable names. For example, these 3 input script lines:
|
||||
|
||||
variable X equal (xlo+xhi)/2+sqrt(v_area)
|
||||
region 1 block $X 2 INF INF EDGE EDGE
|
||||
variable X delete :pre
|
||||
|
||||
can be replaced by
|
||||
|
||||
region 1 block $((xlo+xhi)/2+sqrt(v_area)) 2 INF INF EDGE EDGE :pre
|
||||
|
||||
so that you do not have to define (or discard) a temporary variable X.
|
||||
|
||||
Additionally, the "immediate" variable expression may be followed by a
|
||||
colon, followed by a C-style format string, e.g. ":%f" or ":%.10g".
|
||||
The format string must be appropriate for a double-precision
|
||||
floating-point value. The format string is used to output the result
|
||||
of the variable expression evaluation. If a format string is not
|
||||
specified a high-precision "%.20g" is used as the default.
|
||||
|
||||
This can be useful for formatting print output to a desired precision:
|
||||
|
||||
print "Final energy per atom: $(pe/atoms:%10.3f) eV/atom" :pre
|
||||
|
||||
Note that neither the curly-bracket or immediate form of variables can
|
||||
contain nested $ characters for other variables to substitute for.
|
||||
Thus you cannot do this:
|
||||
|
||||
variable a equal 2
|
||||
variable b2 equal 4
|
||||
print "B2 = $\{b$a\}" :pre
|
||||
|
||||
Nor can you specify this $($x-1.0) for an immediate variable, but
|
||||
you could use $(v_x-1.0), since the latter is valid syntax for an
|
||||
"equal-style variable"_variable.html.
|
||||
|
||||
See the "variable"_variable.html command for more details of how
|
||||
strings are assigned to variables and evaluated, and how they can be
|
||||
used in input script commands.
|
||||
|
||||
(4) The line is broken into "words" separated by whitespace (tabs,
|
||||
spaces). Note that words can thus contain letters, digits,
|
||||
underscores, or punctuation characters.
|
||||
|
||||
(5) The first word is the command name. All successive words in the
|
||||
line are arguments.
|
||||
|
||||
(6) If you want text with spaces to be treated as a single argument,
|
||||
it can be enclosed in either single or double or triple quotes. A
|
||||
long single argument enclosed in single or double quotes can span
|
||||
multiple lines if the "&" character is used, as described above. When
|
||||
the lines are concatenated together (and the "&" characters and line
|
||||
breaks removed), the text will become a single line. If you want
|
||||
multiple lines of an argument to retain their line breaks, the text
|
||||
can be enclosed in triple quotes, in which case "&" characters are not
|
||||
needed. For example:
|
||||
|
||||
print "Volume = $v"
|
||||
print 'Volume = $v'
|
||||
if "$\{steps\} > 1000" then quit
|
||||
variable a string "red green blue &
|
||||
purple orange cyan"
|
||||
print """
|
||||
System volume = $v
|
||||
System temperature = $t
|
||||
""" :pre
|
||||
|
||||
In each case, the single, double, or triple quotes are removed when
|
||||
the single argument they enclose is stored internally.
|
||||
|
||||
See the "dump modify format"_dump_modify.html, "print"_print.html,
|
||||
"if"_if.html, and "python"_python.html commands for examples.
|
||||
|
||||
A "#" or "$" character that is between quotes will not be treated as a
|
||||
comment indicator in (2) or substituted for as a variable in (3).
|
||||
|
||||
NOTE: If the argument is itself a command that requires a quoted
|
||||
argument (e.g. using a "print"_print.html command as part of an
|
||||
"if"_if.html or "run every"_run.html command), then single, double, or
|
||||
triple quotes can be nested in the usual manner. See the doc pages
|
||||
for those commands for examples. Only one of level of nesting is
|
||||
allowed, but that should be sufficient for most use cases.
|
||||
|
||||
95
doc/src/Commands_structure.txt
Normal file
@ -0,0 +1,95 @@
|
||||
"Higher level section"_Commands.html - "LAMMPS WWW Site"_lws - "LAMMPS
|
||||
Documentation"_ld - "LAMMPS Commands"_lc :c
|
||||
|
||||
:link(lws,http://lammps.sandia.gov)
|
||||
:link(ld,Manual.html)
|
||||
:link(lc,Commands_all.html)
|
||||
|
||||
:line
|
||||
|
||||
Input script structure :h3
|
||||
|
||||
This page describes the structure of a typical LAMMPS input script.
|
||||
The examples directory in the LAMMPS distribution contains many sample
|
||||
input scripts; it is discussed on the "Examples"_Examples.html doc
|
||||
page.
|
||||
|
||||
A LAMMPS input script typically has 4 parts:
|
||||
|
||||
Initialization
|
||||
Atom definition
|
||||
Settings
|
||||
Run a simulation :ol
|
||||
|
||||
The last 2 parts can be repeated as many times as desired. I.e. run a
|
||||
simulation, change some settings, run some more, etc. Each of the 4
|
||||
parts is now described in more detail. Remember that almost all
|
||||
commands need only be used if a non-default value is desired.
|
||||
|
||||
(1) Initialization
|
||||
|
||||
Set parameters that need to be defined before atoms are created or
|
||||
read-in from a file.
|
||||
|
||||
The relevant commands are "units"_units.html,
|
||||
"dimension"_dimension.html, "newton"_newton.html,
|
||||
"processors"_processors.html, "boundary"_boundary.html,
|
||||
"atom_style"_atom_style.html, "atom_modify"_atom_modify.html.
|
||||
|
||||
If force-field parameters appear in the files that will be read, these
|
||||
commands tell LAMMPS what kinds of force fields are being used:
|
||||
"pair_style"_pair_style.html, "bond_style"_bond_style.html,
|
||||
"angle_style"_angle_style.html, "dihedral_style"_dihedral_style.html,
|
||||
"improper_style"_improper_style.html.
|
||||
|
||||
(2) Atom definition
|
||||
|
||||
There are 3 ways to define atoms in LAMMPS. Read them in from a data
|
||||
or restart file via the "read_data"_read_data.html or
|
||||
"read_restart"_read_restart.html commands. These files can contain
|
||||
molecular topology information. Or create atoms on a lattice (with no
|
||||
molecular topology), using these commands: "lattice"_lattice.html,
|
||||
"region"_region.html, "create_box"_create_box.html,
|
||||
"create_atoms"_create_atoms.html. The entire set of atoms can be
|
||||
duplicated to make a larger simulation using the
|
||||
"replicate"_replicate.html command.
|
||||
|
||||
(3) Settings
|
||||
|
||||
Once atoms and molecular topology are defined, a variety of settings
|
||||
can be specified: force field coefficients, simulation parameters,
|
||||
output options, etc.
|
||||
|
||||
Force field coefficients are set by these commands (they can also be
|
||||
set in the read-in files): "pair_coeff"_pair_coeff.html,
|
||||
"bond_coeff"_bond_coeff.html, "angle_coeff"_angle_coeff.html,
|
||||
"dihedral_coeff"_dihedral_coeff.html,
|
||||
"improper_coeff"_improper_coeff.html,
|
||||
"kspace_style"_kspace_style.html, "dielectric"_dielectric.html,
|
||||
"special_bonds"_special_bonds.html.
|
||||
|
||||
Various simulation parameters are set by these commands:
|
||||
"neighbor"_neighbor.html, "neigh_modify"_neigh_modify.html,
|
||||
"group"_group.html, "timestep"_timestep.html,
|
||||
"reset_timestep"_reset_timestep.html, "run_style"_run_style.html,
|
||||
"min_style"_min_style.html, "min_modify"_min_modify.html.
|
||||
|
||||
Fixes impose a variety of boundary conditions, time integration, and
|
||||
diagnostic options. The "fix"_fix.html command comes in many flavors.
|
||||
|
||||
Various computations can be specified for execution during a
|
||||
simulation using the "compute"_compute.html,
|
||||
"compute_modify"_compute_modify.html, and "variable"_variable.html
|
||||
commands.
|
||||
|
||||
Output options are set by the "thermo"_thermo.html, "dump"_dump.html,
|
||||
and "restart"_restart.html commands.
|
||||
|
||||
(4) Run a simulation
|
||||
|
||||
A molecular dynamics simulation is run using the "run"_run.html
|
||||
command. Energy minimization (molecular statics) is performed using
|
||||
the "minimize"_minimize.html command. A parallel tempering
|
||||
(replica-exchange) simulation can be run using the
|
||||
"temper"_temper.html command.
|
||||
|
||||
@ -22,10 +22,10 @@ users.
|
||||
LAMMPS source files are in two directories of the distribution
|
||||
tarball. The src directory has the majority of them, all of which are
|
||||
C++ files (*.cpp and *.h). Many of these files are in the src
|
||||
directory itself. There are also dozens of "packages", which can be
|
||||
directory itself. There are also dozens of ``packages'', which can be
|
||||
included or excluded when LAMMPS is built. See the
|
||||
doc/Section\_build.html section of the manual for more information
|
||||
about packages, or type "make" from within the src directory, which
|
||||
about packages, or type ``make'' from within the src directory, which
|
||||
lists package-related commands, such as ``make package-status''. The
|
||||
source files for each package are in an all-uppercase sub-directory of
|
||||
src, like src/MOLECULE or src/USER-CUDA. If the package is currently
|
||||
@ -38,17 +38,17 @@ The lib directory also contains source code for external libraries,
|
||||
used by a few of the packages. Each sub-directory, like meam or gpu,
|
||||
contains the source files, some of which are in different languages
|
||||
such as Fortran. The files are compiled into libraries from within
|
||||
each sub-directory, e.g. performing a "make" in the lib/meam directory
|
||||
each sub-directory, e.g. performing a ``make'' in the lib/meam directory
|
||||
creates a libmeam.a file. These libraries are linked to during a
|
||||
LAMMPS build, if the corresponding package is installed.
|
||||
|
||||
LAMMPS C++ source files almost always come in pairs, such as run.cpp
|
||||
and run.h. The pair of files defines a C++ class, the Run class in
|
||||
this case, which contains the code invoked by the "run" command in a
|
||||
this case, which contains the code invoked by the ``run'' command in a
|
||||
LAMMPS input script. As this example illustrates, source file and
|
||||
class names often have a one-to-one correspondence with a command used
|
||||
in a LAMMPS input script. Some source files and classes do not have a
|
||||
corresponding input script command, e.g. force.cpp and the Force
|
||||
corresponding input script command, e.g. ``force.cpp'' and the Force
|
||||
class. They are discussed in the next section.
|
||||
|
||||
\pagebreak
|
||||
@ -57,12 +57,12 @@ class. They are discussed in the next section.
|
||||
Though LAMMPS has a lot of source files and classes, its class
|
||||
hierarchy is quite simple, as outlined in Fig \ref{fig:classes}. Each
|
||||
boxed name refers to a class and has a pair of associated source files
|
||||
in lammps/src, e.g. memory.cpp and memory.h. More details on the
|
||||
in lammps/src, e.g. ``memory.cpp'' and ``memory.h''. More details on the
|
||||
class and its methods and data structures can be found by examining
|
||||
its *.h file.
|
||||
|
||||
LAMMPS (lammps.cpp/h) is the top-level class for the entire code. It
|
||||
holds an "instance" of LAMMPS and can be instantiated one or more
|
||||
holds an ``instance'' of LAMMPS and can be instantiated one or more
|
||||
times by a calling code. For example, the file src/main.cpp simply
|
||||
instantiates one instance of LAMMPS and passes it the input script.
|
||||
|
||||
@ -81,7 +81,7 @@ enabled by a bit of cleverness in the Pointers class (see
|
||||
src/pointers.h) which every class inherits from.
|
||||
|
||||
There are a handful of virtual parent classes in LAMMPS that define
|
||||
what LAMMPS calls "styles". They are shaded red in Fig
|
||||
what LAMMPS calls ``styles''. They are shaded red in Fig
|
||||
\ref{fig:classes}. Each of these are parents of a number of child
|
||||
classes that implement the interface defined by the parent class. For
|
||||
example, the fix style has around 100 child classes. They are the
|
||||
@ -89,17 +89,17 @@ possible fixes that can be specified by the fix command in an input
|
||||
script, e.g. fix nve, fix shake, fix ave/time, etc. The corresponding
|
||||
classes are Fix (for the parent class), FixNVE, FixShake, FixAveTime,
|
||||
etc. The source files for these classes are easy to identify in the
|
||||
src directory, since they begin with the word "fix", e,g,
|
||||
src directory, since they begin with the word ``fix'', e,g,
|
||||
fix\_nve.cpp, fix\_shake,cpp, fix\_ave\_time.cpp, etc.
|
||||
|
||||
The one exception is child class files for the "command" style. These
|
||||
The one exception is child class files for the ``command'' style. These
|
||||
implement specific commands in the input script that can be invoked
|
||||
before/after/between runs or which launch a simulation. Examples are
|
||||
the create\_box, minimize, run, and velocity commands which encode the
|
||||
CreateBox, Minimize, Run, and Velocity classes. The corresponding
|
||||
files are create\_box,cpp, minimize.cpp, run.cpp, and velocity.cpp.
|
||||
The list of command style files can be found by typing "grep
|
||||
COMMAND\_CLASS *.h" from within the src directory, since that word in
|
||||
The list of command style files can be found by typing ``grep
|
||||
COMMAND\_CLASS *.h'' from within the src directory, since that word in
|
||||
the header file identifies the class as an input script command.
|
||||
Similar words can be grepped to list files for the other LAMMPS
|
||||
styles. E.g. ATOM\_CLASS, PAIR\_CLASS, BOND\_CLASS, REGION\_CLASS,
|
||||
@ -471,13 +471,13 @@ FixStyle(your/fix/name,FixMine)
|
||||
\end{verbatim}
|
||||
\end{center}
|
||||
|
||||
Where "your/fix/name" is a name of your fix in the script and FixMine
|
||||
Where ``your/fix/name'' is a name of your fix in the script and FixMine
|
||||
is the name of the class. This code allows LAMMPS to find your fix
|
||||
when it parses input script. In addition, your fix header must be
|
||||
included in the file "style\_fix.h". In case if you use LAMMPS make,
|
||||
included in the file ``style\_fix.h''. In case if you use LAMMPS make,
|
||||
this file is generated automatically - all files starting with prefix
|
||||
fix\_ are included, so call your header the same way. Otherwise, don<EFBFBD>t
|
||||
forget to add your include into "style\_fix.h".
|
||||
fix\_ are included, so call your header the same way. Otherwise, don't
|
||||
forget to add your include into ``style\_fix.h''.
|
||||
|
||||
Let's write a simple fix which will print average velocity at the end
|
||||
of each timestep. First of all, implement a constructor:
|
||||
@ -567,11 +567,11 @@ void FixPrintVel::end_of_step()
|
||||
\end{center}
|
||||
|
||||
In the code above, we use MathExtra routines defined in
|
||||
"math\_extra.h". There are bunch of math functions to work with
|
||||
``math\_extra.h''. There are bunch of math functions to work with
|
||||
arrays of doubles as with math vectors.
|
||||
|
||||
In this code we use an instance of Atom class. This object is stored
|
||||
in the Pointers class (see "pointers.h"). This object contains all
|
||||
in the Pointers class (see ``pointers.h''). This object contains all
|
||||
global information about the simulation system. Data from Pointers
|
||||
class available to all classes inherited from it using protected
|
||||
inheritance. Hence when you write you own class, which is going to use
|
||||
@ -689,7 +689,7 @@ int FixSavePos::unpack_exchange(int nlocal, double *buf)
|
||||
|
||||
Now, a little bit about memory allocation. We used Memory class which
|
||||
is just a bunch of template functions for allocating 1D and 2D
|
||||
arrays. So you need to add include "memory.h" to have access to them.
|
||||
arrays. So you need to add include ``memory.h'' to have access to them.
|
||||
|
||||
Finally, if you need to write/read some global information used in
|
||||
your fix to the restart file, you might do it by setting flag
|
||||
|
||||
BIN
doc/src/Eqs/fix_integration_spin_stdecomposition.jpg
Normal file
|
After Width: | Height: | Size: 50 KiB |
40
doc/src/Eqs/fix_integration_spin_stdecomposition.tex
Normal file
@ -0,0 +1,40 @@
|
||||
\documentclass[preview]{standalone}
|
||||
\usepackage{varwidth}
|
||||
\usepackage[utf8x]{inputenc}
|
||||
\usepackage{amsmath,amssymb,amsthm,bm,tikz}
|
||||
\usetikzlibrary{automata,arrows,shapes,snakes}
|
||||
\begin{document}
|
||||
\begin{varwidth}{50in}
|
||||
\begin{tikzpicture}
|
||||
|
||||
%Global
|
||||
\node (v1) at (0,6.0) [draw,thick,minimum width=0.2cm,minimum height=0.2cm] { $\bm{v} \leftarrow \bm{v}+L_v.\Delta t/2$ };
|
||||
\node (s1) at (0,4.5) [draw,thick,minimum width=0.2cm,minimum height=0.2cm] { $\bm{s} \leftarrow \bm{s}+L_s.\Delta t/2$ };
|
||||
\node (r) at (0,3.0) [draw,thick,minimum width=0.2cm,minimum height=0.2cm] { $\bm{r} \leftarrow \bm{r}+L_r.\Delta t$ };
|
||||
\node (s2) at (0,1.5) [draw,thick,minimum width=0.2cm,minimum height=0.2cm] { $\bm{s} \leftarrow \bm{s}+L_s.\Delta t/2$ };
|
||||
\node (v2) at (0,0.0) [draw,thick,minimum width=0.2cm,minimum height=0.2cm] { $\bm{v} \leftarrow \bm{v}+L_v.\Delta t/2$ };
|
||||
|
||||
\draw[line width=2pt, ->] (v1) -- (s1);
|
||||
\draw[line width=2pt, ->] (s1) -- (r);
|
||||
\draw[line width=2pt, ->] (r) -- (s2);
|
||||
\draw[line width=2pt, ->] (s2) -- (v2);
|
||||
|
||||
%Spin
|
||||
\node (s01) at (6,6.0) [draw,thick,minimum width=0.2cm,minimum height=0.2cm] {$\bm{s}_0 \leftarrow \bm{s}_0+L_{s_0}.\Delta t/4$ };
|
||||
\node (sN1) at (6,4.5) [draw,thick,minimum width=0.2cm,minimum height=0.2cm] {$\bm{s}_{\rm N-1}\leftarrow\bm{s}_{\rm N-1}+L_{s_{\rm N-1}}.\Delta t/4$};
|
||||
\node (sN) at (6,3.0) [draw,thick,minimum width=0.2cm,minimum height=0.2cm] {$\bm{s}_{\rm N} \leftarrow \bm{s}_{\rm N}+L_{s_{\rm N}}.\Delta t/2$ };
|
||||
\node (sN2) at (6,1.5) [draw,thick,minimum width=0.2cm,minimum height=0.2cm] {$\bm{s}_{\rm N-1}\leftarrow\bm{s}_{\rm N-1}+L_{s_{\rm N-1}}.\Delta t/4$};
|
||||
\node (s02) at (6,0.0) [draw,thick,minimum width=0.2cm,minimum height=0.2cm] {$\bm{s}_0 \leftarrow \bm{s}_0+L_{s_0}.\Delta t/4$ };
|
||||
|
||||
\draw[line width=2pt,dashed, ->] (s01) -- (sN1);
|
||||
\draw[line width=2pt, ->] (sN1) -- (sN);
|
||||
\draw[line width=2pt, ->] (sN) -- (sN2);
|
||||
\draw[line width=2pt,dashed, ->] (sN2) -- (s02);
|
||||
|
||||
%from Global to Spin
|
||||
\draw[line width=2pt, dashed, ->] (s1) -- (s01.west);
|
||||
\draw[line width=2pt, dashed, ->] (s1) -- (s02.west);
|
||||
|
||||
\end{tikzpicture}
|
||||
\end{varwidth}
|
||||
\end{document}
|
||||
BIN
doc/src/Eqs/fix_langevin_spin_sLLG.jpg
Normal file
|
After Width: | Height: | Size: 8.9 KiB |
14
doc/src/Eqs/fix_langevin_spin_sLLG.tex
Normal file
@ -0,0 +1,14 @@
|
||||
\documentclass[preview]{standalone}
|
||||
\usepackage{varwidth}
|
||||
\usepackage[utf8x]{inputenc}
|
||||
\usepackage{amsmath, amssymb, graphics, setspace}
|
||||
|
||||
\begin{document}
|
||||
\begin{varwidth}{50in}
|
||||
\begin{equation}
|
||||
\frac{d \vec{s}_{i}}{dt} = \frac{1}{\left(1+\lambda^2 \right)} \left( \left(
|
||||
\vec{\omega}_{i} +\vec{\eta} \right) \times \vec{s}_{i} + \lambda\, \vec{s}_{i}
|
||||
\times\left( \vec{\omega}_{i} \times\vec{s}_{i} \right) \right), \nonumber
|
||||
\end{equation}
|
||||
\end{varwidth}
|
||||
\end{document}
|
||||
BIN
doc/src/Eqs/force_spin_aniso.jpg
Normal file
|
After Width: | Height: | Size: 5.9 KiB |
11
doc/src/Eqs/force_spin_aniso.tex
Normal file
@ -0,0 +1,11 @@
|
||||
\documentclass[preview]{standalone}
|
||||
\usepackage{varwidth}
|
||||
\usepackage[utf8x]{inputenc}
|
||||
\usepackage{amsmath,amssymb,amsthm,bm}
|
||||
\begin{document}
|
||||
\begin{varwidth}{50in}
|
||||
\begin{equation}
|
||||
\bm{H}_{aniso} = -\sum_{{ i}=1}^{N} K_{an}(\bm{r}_{i})\, \left( \vec{s}_{i} \cdot \vec{n}_{i} \right)^2, \nonumber
|
||||
\end{equation}
|
||||
\end{varwidth}
|
||||
\end{document}
|
||||
BIN
doc/src/Eqs/force_spin_zeeman.jpg
Normal file
|
After Width: | Height: | Size: 6.4 KiB |
11
doc/src/Eqs/force_spin_zeeman.tex
Normal file
@ -0,0 +1,11 @@
|
||||
\documentclass[preview]{standalone}
|
||||
\usepackage{varwidth}
|
||||
\usepackage[utf8x]{inputenc}
|
||||
\usepackage{amsmath,amssymb,amsthm,bm}
|
||||
\begin{document}
|
||||
\begin{varwidth}{50in}
|
||||
\begin{equation}
|
||||
\bm{H}_{zeeman} = -\mu_{B}\mu_0\sum_{i=0}^{N}g_{i} \vec{s}_{i} \cdot \vec{H}_{ext} \nonumber
|
||||
\end{equation}
|
||||
\end{varwidth}
|
||||
\end{document}
|
||||
BIN
doc/src/Eqs/pair_atm.jpg
Normal file
|
After Width: | Height: | Size: 5.3 KiB |
9
doc/src/Eqs/pair_atm.tex
Normal file
@ -0,0 +1,9 @@
|
||||
\documentclass[12pt]{article}
|
||||
|
||||
\begin{document}
|
||||
|
||||
\begin{equation}
|
||||
E=\nu\frac{1+3\cos\gamma_1\cos\gamma_2\cos\gamma_3}{r_{12}^3r_{23}^3r_{31}^3}
|
||||
\end{equation}
|
||||
|
||||
\end{document}
|
||||
BIN
doc/src/Eqs/pair_body_rounded.jpg
Normal file
|
After Width: | Height: | Size: 144 KiB |
13
doc/src/Eqs/pair_body_rounded.tex
Normal file
@ -0,0 +1,13 @@
|
||||
\documentstyle[12pt]{article}
|
||||
|
||||
\begin{document}
|
||||
|
||||
\begin{eqnarray*}
|
||||
F_n &=& k_n \delta_n - c_n v_n, \qquad \delta_n \le 0 \\
|
||||
&=& -k_{na} \delta_n - c_n v_n, \qquad 0 < \delta_n \le r_c \\
|
||||
&=& 0 \qquad \qquad \qquad \qquad \delta_n > r_c \\
|
||||
F_t &=& \mu k_n \delta_n - c_t v_t, \qquad \delta_n \le 0 \\
|
||||
&=& 0 \qquad \qquad \qquad \qquad \delta_n > 0
|
||||
\end{eqnarray*}
|
||||
|
||||
\end{document}
|
||||
BIN
doc/src/Eqs/pair_entropy.jpg
Normal file
|
After Width: | Height: | Size: 8.7 KiB |
10
doc/src/Eqs/pair_entropy.tex
Normal file
@ -0,0 +1,10 @@
|
||||
\documentclass[12pt]{article}
|
||||
|
||||
\begin{document}
|
||||
\thispagestyle{empty}
|
||||
|
||||
$$
|
||||
s_S^i=-2\pi\rho k_B \int\limits_0^{r_m} \left [ g(r) \ln g(r) - g(r) + 1 \right ] r^2 dr ,
|
||||
$$
|
||||
|
||||
\end{document}
|
||||
BIN
doc/src/Eqs/pair_entropy2.jpg
Normal file
|
After Width: | Height: | Size: 8.3 KiB |
10
doc/src/Eqs/pair_entropy2.tex
Normal file
@ -0,0 +1,10 @@
|
||||
\documentclass[12pt]{article}
|
||||
|
||||
\begin{document}
|
||||
\thispagestyle{empty}
|
||||
|
||||
$$
|
||||
g_m^i(r) = \frac{1}{4 \pi \rho r^2} \sum\limits_{j} \frac{1}{\sqrt{2 \pi \sigma^2}} e^{-(r-r_{ij})^2/(2\sigma^2)} ,
|
||||
$$
|
||||
|
||||
\end{document}
|
||||
BIN
doc/src/Eqs/pair_entropy3.jpg
Normal file
|
After Width: | Height: | Size: 5.6 KiB |
10
doc/src/Eqs/pair_entropy3.tex
Normal file
@ -0,0 +1,10 @@
|
||||
\documentclass[12pt]{article}
|
||||
|
||||
\begin{document}
|
||||
\thispagestyle{empty}
|
||||
|
||||
$$
|
||||
\bar{s}_S^i = \frac{\sum_j s_S^j + s_S^i}{N + 1} ,
|
||||
$$
|
||||
|
||||
\end{document}
|
||||
BIN
doc/src/Eqs/pair_spin_dmi_forces.jpg
Normal file
|
After Width: | Height: | Size: 13 KiB |
14
doc/src/Eqs/pair_spin_dmi_forces.tex
Normal file
@ -0,0 +1,14 @@
|
||||
\documentclass[preview]{standalone}
|
||||
\usepackage{varwidth}
|
||||
\usepackage[utf8x]{inputenc}
|
||||
\usepackage{amsmath,amssymb,amsthm,bm}
|
||||
\begin{document}
|
||||
\begin{varwidth}{50in}
|
||||
\begin{equation}
|
||||
\vec{\omega}_i = -\frac{1}{\hbar} \sum_{j}^{Neighb} \vec{s}_{j}\times \left(\vec{e}_{ij}\times \vec{D} \right)
|
||||
~~{\rm and}~~
|
||||
\vec{F}_i = -\sum_{j}^{Neighb} \frac{1}{r_{ij}} \vec{D} \times \left( \vec{s}_{i}\times \vec{s}_{j} \right)
|
||||
, \nonumber
|
||||
\end{equation}
|
||||
\end{varwidth}
|
||||
\end{document}
|
||||
BIN
doc/src/Eqs/pair_spin_dmi_interaction.jpg
Normal file
|
After Width: | Height: | Size: 7.7 KiB |
16
doc/src/Eqs/pair_spin_dmi_interaction.tex
Normal file
@ -0,0 +1,16 @@
|
||||
\documentclass[preview]{standalone}
|
||||
\usepackage{varwidth}
|
||||
\usepackage[utf8x]{inputenc}
|
||||
\usepackage{amsmath,amssymb,amsthm,bm}
|
||||
\begin{document}
|
||||
\begin{varwidth}{50in}
|
||||
\begin{equation}
|
||||
\bm{H}_{dm} = \sum_{{ i,j}=1,i\neq j}^{N}
|
||||
\left( \vec{e}_{ij} \times \vec{D} \right)
|
||||
\cdot\left(\vec{s}_{i}\times \vec{s}_{j}\right),
|
||||
\nonumber
|
||||
\end{equation}
|
||||
\end{varwidth}
|
||||
\end{document}
|
||||
\vec{D}\left(r_{ij}\right)
|
||||
{\rm ~and~} \vec{D}\left(r_{ij}\right) = \vec{e}_{ij} \times \vec{D}
|
||||
BIN
doc/src/Eqs/pair_spin_exchange_forces.jpg
Normal file
|
After Width: | Height: | Size: 13 KiB |
16
doc/src/Eqs/pair_spin_exchange_forces.tex
Normal file
@ -0,0 +1,16 @@
|
||||
\documentclass[preview]{standalone}
|
||||
\usepackage{varwidth}
|
||||
\usepackage[utf8x]{inputenc}
|
||||
\usepackage{amsmath,amssymb,amsthm,bm}
|
||||
\begin{document}
|
||||
\begin{varwidth}{50in}
|
||||
\begin{equation}
|
||||
\vec{\omega}_{i} = \frac{1}{\hbar} \sum_{j}^{Neighb} {J}
|
||||
\left(r_{ij} \right)\,\vec{s}_{j}
|
||||
~~{\rm and}~~
|
||||
\vec{F}_{i} = \sum_{j}^{Neighb} \frac{\partial {J} \left(r_{ij} \right)}{
|
||||
\partial r_{ij}} \left( \vec{s}_{i}\cdot \vec{s}_{j} \right) \vec{e}_{ij}
|
||||
\nonumber
|
||||
\end{equation}
|
||||
\end{varwidth}
|
||||
\end{document}
|
||||
BIN
doc/src/Eqs/pair_spin_exchange_function.jpg
Normal file
|
After Width: | Height: | Size: 10 KiB |
13
doc/src/Eqs/pair_spin_exchange_function.tex
Normal file
@ -0,0 +1,13 @@
|
||||
\documentclass[preview]{standalone}
|
||||
\usepackage{varwidth}
|
||||
\usepackage[utf8x]{inputenc}
|
||||
\usepackage{amsmath, amssymb, graphics, setspace}
|
||||
|
||||
\begin{document}
|
||||
\begin{varwidth}{50in}
|
||||
\begin{equation}
|
||||
{J}\left( r_{ij} \right) = 4 a \left( \frac{r_{ij}}{d} \right)^2 \left( 1 - b \left( \frac{r_{ij}}{d} \right)^2 \right) e^{-\left( \frac{r_{ij}}{d}
|
||||
\right)^2 }\Theta (R_c - r_{ij}) \nonumber
|
||||
\end{equation}
|
||||
\end{varwidth}
|
||||
\end{document}
|
||||
BIN
doc/src/Eqs/pair_spin_exchange_interaction.jpg
Normal file
|
After Width: | Height: | Size: 5.8 KiB |
11
doc/src/Eqs/pair_spin_exchange_interaction.tex
Normal file
@ -0,0 +1,11 @@
|
||||
\documentclass[preview]{standalone}
|
||||
\usepackage{varwidth}
|
||||
\usepackage[utf8x]{inputenc}
|
||||
\usepackage{amsmath,amssymb,amsthm,bm}
|
||||
\begin{document}
|
||||
\begin{varwidth}{50in}
|
||||
\begin{equation}
|
||||
\bm{H}_{ex} ~=~ -\sum_{i,j,i\neq j}^{N} {J} \left(r_{ij} \right)\, \vec{s}_{i}\cdot \vec{s}_{j} \nonumber
|
||||
\end{equation}
|
||||
\end{varwidth}
|
||||
\end{document}
|
||||
BIN
doc/src/Eqs/pair_spin_me_forces.jpg
Normal file
|
After Width: | Height: | Size: 13 KiB |
13
doc/src/Eqs/pair_spin_me_forces.tex
Normal file
@ -0,0 +1,13 @@
|
||||
\documentclass[preview]{standalone}
|
||||
\usepackage{varwidth}
|
||||
\usepackage[utf8x]{inputenc}
|
||||
\usepackage{amsmath,amssymb,amsthm,bm}
|
||||
\begin{document}
|
||||
\begin{varwidth}{50in}
|
||||
\begin{equation}
|
||||
\vec{F}^{i} = -\sum_{j}^{Neighbor} \left( \vec{s}_{i}\times \vec{s}_{j} \right)
|
||||
\times \vec{E} ~~{\rm and}~~ \vec{\omega}^{i} = -\frac{1}{\hbar}
|
||||
\sum_{j}^{Neighbor} \vec{s}_j \times \left(\vec{E}\times r_{ij} \right),\nonumber
|
||||
\end{equation}
|
||||
\end{varwidth}
|
||||
\end{document}
|
||||
BIN
doc/src/Eqs/pair_spin_me_interaction.jpg
Normal file
|
After Width: | Height: | Size: 10 KiB |
12
doc/src/Eqs/pair_spin_me_interaction.tex
Normal file
@ -0,0 +1,12 @@
|
||||
\documentclass[preview]{standalone}
|
||||
\usepackage{varwidth}
|
||||
\usepackage[utf8x]{inputenc}
|
||||
\usepackage{amsmath,amssymb,amsthm,bm}
|
||||
\begin{document}
|
||||
\begin{varwidth}{50in}
|
||||
\begin{equation}
|
||||
\vec{\omega}_i = -\frac{1}{\hbar} \sum_{j}^{Neighb} \vec{s}_{j}\times\vec{D}(r_{ij}) ~~{\rm and}~~
|
||||
\vec{F}_i = -\sum_{j}^{Neighb} \frac{\partial D(r_{ij})}{\partial r_{ij}} \left(\vec{s}_{i}\times \vec{s}_{j} \right) \cdot \vec{r}_{ij}, \nonumber
|
||||
\end{equation}
|
||||
\end{varwidth}
|
||||
\end{document}
|
||||
BIN
doc/src/Eqs/pair_spin_neel_functions.jpg
Normal file
|
After Width: | Height: | Size: 5.8 KiB |
13
doc/src/Eqs/pair_spin_neel_functions.tex
Normal file
@ -0,0 +1,13 @@
|
||||
\documentclass[preview]{standalone}
|
||||
\usepackage{varwidth}
|
||||
\usepackage[utf8x]{inputenc}
|
||||
\usepackage{amsmath,amssymb,amsthm,bm}
|
||||
\begin{document}
|
||||
\begin{varwidth}{50in}
|
||||
\begin{eqnarray}
|
||||
g_1(r_{ij}) &=& g(r_{ij}) + \frac{12}{35} q(r_{ij}) \nonumber \\
|
||||
q_1(r_{ij}) &=& \frac{9}{5} q(r_{ij}) \nonumber \\
|
||||
q_2(r_{ij}) &=& - \frac{2}{5} q(r_{ij}) \nonumber
|
||||
\end{eqnarray}
|
||||
\end{varwidth}
|
||||
\end{document}
|
||||
BIN
doc/src/Eqs/pair_spin_neel_interaction.jpg
Normal file
|
After Width: | Height: | Size: 11 KiB |
16
doc/src/Eqs/pair_spin_neel_interaction.tex
Normal file
@ -0,0 +1,16 @@
|
||||
\documentclass[preview]{standalone}
|
||||
\usepackage{varwidth}
|
||||
\usepackage[utf8x]{inputenc}
|
||||
\usepackage{amsmath,amssymb,amsthm,bm}
|
||||
\begin{document}
|
||||
\begin{varwidth}{50in}
|
||||
\begin{equation}
|
||||
\mathcal{H}_{N\acute{e}el}=-\sum_{{ i,j=1,i\neq j}}^N g_1(r_{ij})\left(({\bm e}_{ij}\cdot {\bm s}_{i})({\bm e}_{ij}
|
||||
\cdot {\bm s}_{j})-\frac{{\bm s}_{i}\cdot{\bm s}_{j}}{3} \right)
|
||||
+q_1(r_{ij})\left( ({\bm e}_{ij}\cdot {\bm s}_{i})^2 -\frac{{\bm s}_{i}\cdot{\bm s}_{j}}{3}\right)
|
||||
\left( ({\bm e}_{ij}\cdot {\bm s}_{i})^2 -\frac{{\bm s}_{i}\cdot{\bm s}_{j}}{3} \right)
|
||||
+ q_2(r_{ij}) \Big( ({\bm e}_{ij}\cdot {\bm s}_{i}) ({\bm e}_{ij}\cdot {\bm s}_{j})^3 + ({\bm e}_{ij}\cdot
|
||||
{\bm s}_{j}) ({\bm e}_{ij}\cdot {\bm s}_{i})^3\Big) \nonumber
|
||||
\end{equation}
|
||||
\end{varwidth}
|
||||
\end{document}
|
||||
BIN
doc/src/Eqs/ptm_rmsd.jpg
Normal file
|
After Width: | Height: | Size: 6.7 KiB |
21
doc/src/Eqs/ptm_rmsd.tex
Normal file
@ -0,0 +1,21 @@
|
||||
\documentclass[12pt,article]{article}
|
||||
|
||||
\usepackage{indentfirst}
|
||||
\usepackage{amsmath}
|
||||
|
||||
\newcommand{\set}[1]{\ensuremath{\mathbf{#1}}}
|
||||
\newcommand{\mean}[1]{\ensuremath{\overline{#1}}}
|
||||
\newcommand{\norm}[1]{\ensuremath{\left|\left|{#1}\right|\right|}}
|
||||
|
||||
\begin{document}
|
||||
|
||||
\begin{equation*}
|
||||
\text{RMSD}(\set{u}, \set{v}) = \min_{s, \set{Q}} \sqrt{\frac{1}{N} \sum\limits_{i=1}^{N}
|
||||
\norm{
|
||||
s[\vec{u_i} - \mean{\set{u}}]
|
||||
-
|
||||
\set{Q} \vec{v_i}
|
||||
}^2}
|
||||
\end{equation*}
|
||||
|
||||
\end{document}
|
||||
38
doc/src/Errors.txt
Normal file
@ -0,0 +1,38 @@
|
||||
"Previous Section"_Python_head.html - "LAMMPS WWW Site"_lws -
|
||||
"LAMMPS Documentation"_ld - "LAMMPS Commands"_lc - "Next
|
||||
Section"_Manual.html :c
|
||||
|
||||
:link(lws,http://lammps.sandia.gov)
|
||||
:link(ld,Manual.html)
|
||||
:link(lc,Commands_all.html)
|
||||
|
||||
:line
|
||||
|
||||
Errors :h2
|
||||
|
||||
These doc pages describe the errors you can encounter when using
|
||||
LAMMPS. The common problems include conceptual issues. The messages
|
||||
and warnings doc pages give complete lists of all the messages the
|
||||
code may generate (except those generated by USER packages), with
|
||||
additional details for many of them.
|
||||
|
||||
<!-- RST
|
||||
|
||||
.. toctree::
|
||||
:maxdepth: 1
|
||||
|
||||
Errors_common
|
||||
Errors_bugs
|
||||
Errors_messages
|
||||
Errors_warnings
|
||||
|
||||
END_RST -->
|
||||
|
||||
<!-- HTML_ONLY -->
|
||||
|
||||
"Common problems"_Errors_common.html
|
||||
"Reporting bugs"_Errors_bugs.html
|
||||
"Error messages"_Errors_messages.html
|
||||
"Warning messages"_Errors_warnings.html :all(b)
|
||||
|
||||
<!-- END_HTML_ONLY -->
|
||||
35
doc/src/Errors_bugs.txt
Normal file
@ -0,0 +1,35 @@
|
||||
"Higher level section"_Errors.html - "LAMMPS WWW Site"_lws - "LAMMPS
|
||||
Documentation"_ld - "LAMMPS Commands"_lc :c
|
||||
|
||||
:link(lws,http://lammps.sandia.gov)
|
||||
:link(ld,Manual.html)
|
||||
:link(lc,Commands_all.html)
|
||||
|
||||
:line
|
||||
|
||||
Reporting bugs :h3
|
||||
|
||||
If you are confident that you have found a bug in LAMMPS, follow these
|
||||
steps.
|
||||
|
||||
Check the "New features and bug
|
||||
fixes"_http://lammps.sandia.gov/bug.html section of the "LAMMPS WWW
|
||||
site"_lws to see if the bug has already been reported or fixed or the
|
||||
"Unfixed bug"_http://lammps.sandia.gov/unbug.html to see if a fix is
|
||||
pending.
|
||||
|
||||
Check the "mailing list"_http://lammps.sandia.gov/mail.html to see if
|
||||
it has been discussed before.
|
||||
|
||||
If not, send an email to the mailing list describing the problem with
|
||||
any ideas you have as to what is causing it or where in the code the
|
||||
problem might be. The developers will ask for more info if needed,
|
||||
such as an input script or data files.
|
||||
|
||||
The most useful thing you can do to help us fix the bug is to isolate
|
||||
the problem. Run it on the smallest number of atoms and fewest number
|
||||
of processors and with the simplest input script that reproduces the
|
||||
bug and try to identify what command or combination of commands is
|
||||
causing the problem.
|
||||
|
||||
NOTE: this page needs to have GitHub issues info added
|
||||
123
doc/src/Errors_common.txt
Normal file
@ -0,0 +1,123 @@
|
||||
"Higher level section"_Errors.html - "LAMMPS WWW Site"_lws - "LAMMPS
|
||||
Documentation"_ld - "LAMMPS Commands"_lc :c
|
||||
|
||||
:link(lws,http://lammps.sandia.gov)
|
||||
:link(ld,Manual.html)
|
||||
:link(lc,Commands_all.html)
|
||||
|
||||
:line
|
||||
|
||||
Common problems :h3
|
||||
|
||||
If two LAMMPS runs do not produce the exact same answer on different
|
||||
machines or different numbers of processors, this is typically not a
|
||||
bug. In theory you should get identical answers on any number of
|
||||
processors and on any machine. In practice, numerical round-off can
|
||||
cause slight differences and eventual divergence of molecular dynamics
|
||||
phase space trajectories within a few 100s or few 1000s of timesteps.
|
||||
However, the statistical properties of the two runs (e.g. average
|
||||
energy or temperature) should still be the same.
|
||||
|
||||
If the "velocity"_velocity.html command is used to set initial atom
|
||||
velocities, a particular atom can be assigned a different velocity
|
||||
when the problem is run on a different number of processors or on
|
||||
different machines. If this happens, the phase space trajectories of
|
||||
the two simulations will rapidly diverge. See the discussion of the
|
||||
{loop} option in the "velocity"_velocity.html command for details and
|
||||
options that avoid this issue.
|
||||
|
||||
Similarly, the "create_atoms"_create_atoms.html command generates a
|
||||
lattice of atoms. For the same physical system, the ordering and
|
||||
numbering of atoms by atom ID may be different depending on the number
|
||||
of processors.
|
||||
|
||||
Some commands use random number generators which may be setup to
|
||||
produce different random number streams on each processor and hence
|
||||
will produce different effects when run on different numbers of
|
||||
processors. A commonly-used example is the "fix
|
||||
langevin"_fix_langevin.html command for thermostatting.
|
||||
|
||||
A LAMMPS simulation typically has two stages, setup and run. Most
|
||||
LAMMPS errors are detected at setup time; others like a bond
|
||||
stretching too far may not occur until the middle of a run.
|
||||
|
||||
LAMMPS tries to flag errors and print informative error messages so
|
||||
you can fix the problem. For most errors it will also print the last
|
||||
input script command that it was processing. Of course, LAMMPS cannot
|
||||
figure out your physics or numerical mistakes, like choosing too big a
|
||||
timestep, specifying erroneous force field coefficients, or putting 2
|
||||
atoms on top of each other! If you run into errors that LAMMPS
|
||||
doesn't catch that you think it should flag, please send an email to
|
||||
the "developers"_http://lammps.sandia.gov/authors.html.
|
||||
|
||||
If you get an error message about an invalid command in your input
|
||||
script, you can determine what command is causing the problem by
|
||||
looking in the log.lammps file or using the "echo command"_echo.html
|
||||
to see it on the screen. If you get an error like "Invalid ...
|
||||
style", with ... being fix, compute, pair, etc, it means that you
|
||||
mistyped the style name or that the command is part of an optional
|
||||
package which was not compiled into your executable. The list of
|
||||
available styles in your executable can be listed by using "the -h
|
||||
command-line swith"_Run_options.html. The installation and
|
||||
compilation of optional packages is explained on the "Build
|
||||
packages"_Build_package.html doc page.
|
||||
|
||||
For a given command, LAMMPS expects certain arguments in a specified
|
||||
order. If you mess this up, LAMMPS will often flag the error, but it
|
||||
may also simply read a bogus argument and assign a value that is
|
||||
valid, but not what you wanted. E.g. trying to read the string "abc"
|
||||
as an integer value of 0. Careful reading of the associated doc page
|
||||
for the command should allow you to fix these problems. In most cases,
|
||||
where LAMMPS expects to read a number, either integer or floating point,
|
||||
it performs a stringent test on whether the provided input actually
|
||||
is an integer or floating-point number, respectively, and reject the
|
||||
input with an error message (for instance, when an integer is required,
|
||||
but a floating-point number 1.0 is provided):
|
||||
|
||||
ERROR: Expected integer parameter in input script or data file :pre
|
||||
|
||||
Some commands allow for using variable references in place of numeric
|
||||
constants so that the value can be evaluated and may change over the
|
||||
course of a run. This is typically done with the syntax {v_name} for a
|
||||
parameter, where name is the name of the variable. On the other hand,
|
||||
immediate variable expansion with the syntax ${name} is performed while
|
||||
reading the input and before parsing commands,
|
||||
|
||||
NOTE: Using a variable reference (i.e. {v_name}) is only allowed if
|
||||
the documentation of the corresponding command explicitly says it is.
|
||||
|
||||
Generally, LAMMPS will print a message to the screen and logfile and
|
||||
exit gracefully when it encounters a fatal error. Sometimes it will
|
||||
print a WARNING to the screen and logfile and continue on; you can
|
||||
decide if the WARNING is important or not. A WARNING message that is
|
||||
generated in the middle of a run is only printed to the screen, not to
|
||||
the logfile, to avoid cluttering up thermodynamic output. If LAMMPS
|
||||
crashes or hangs without spitting out an error message first then it
|
||||
could be a bug (see "this section"_Errors_bugs.html) or one of the following
|
||||
cases:
|
||||
|
||||
LAMMPS runs in the available memory a processor allows to be
|
||||
allocated. Most reasonable MD runs are compute limited, not memory
|
||||
limited, so this shouldn't be a bottleneck on most platforms. Almost
|
||||
all large memory allocations in the code are done via C-style malloc's
|
||||
which will generate an error message if you run out of memory.
|
||||
Smaller chunks of memory are allocated via C++ "new" statements. If
|
||||
you are unlucky you could run out of memory just when one of these
|
||||
small requests is made, in which case the code will crash or hang (in
|
||||
parallel), since LAMMPS doesn't trap on those errors.
|
||||
|
||||
Illegal arithmetic can cause LAMMPS to run slow or crash. This is
|
||||
typically due to invalid physics and numerics that your simulation is
|
||||
computing. If you see wild thermodynamic values or NaN values in your
|
||||
LAMMPS output, something is wrong with your simulation. If you
|
||||
suspect this is happening, it is a good idea to print out
|
||||
thermodynamic info frequently (e.g. every timestep) via the
|
||||
"thermo"_thermo.html so you can monitor what is happening.
|
||||
Visualizing the atom movement is also a good idea to insure your model
|
||||
is behaving as you expect.
|
||||
|
||||
In parallel, one way LAMMPS can hang is due to how different MPI
|
||||
implementations handle buffering of messages. If the code hangs
|
||||
without an error message, it may be that you need to specify an MPI
|
||||
setting or two (usually via an environment variable) to enable
|
||||
buffering or boost the sizes of messages that can be buffered.
|
||||
916
doc/src/Errors_warnings.txt
Normal file
@ -0,0 +1,916 @@
|
||||
"Higher level section"_Errors.html - "LAMMPS WWW Site"_lws - "LAMMPS
|
||||
Documentation"_ld - "LAMMPS Commands"_lc :c
|
||||
|
||||
:link(lws,http://lammps.sandia.gov)
|
||||
:link(ld,Manual.html)
|
||||
:link(lc,Commands_all.html)
|
||||
|
||||
:line
|
||||
|
||||
Warning messages :h3
|
||||
|
||||
This is an alphabetic list of the WARNING messages LAMMPS prints out
|
||||
and the reason why. If the explanation here is not sufficient, the
|
||||
documentation for the offending command may help. Warning messages
|
||||
also list the source file and line number where the warning was
|
||||
generated. For example, a message like this:
|
||||
|
||||
WARNING: Bond atom missing in box size check (domain.cpp:187) :pre
|
||||
|
||||
means that line #187 in the file src/domain.cpp generated the error.
|
||||
Looking in the source code may help you figure out what went wrong.
|
||||
|
||||
Note that warning messages from "user-contributed
|
||||
packages"_Packages_user.html are not listed here. If such a warning
|
||||
occurs and is not self-explanatory, you'll need to look in the source
|
||||
code or contact the author of the package.
|
||||
|
||||
Doc page with "ERROR messages"_Errors_messages.html
|
||||
|
||||
:line
|
||||
|
||||
:dlb
|
||||
|
||||
{Adjusting Coulombic cutoff for MSM, new cutoff = %g} :dt
|
||||
|
||||
The adjust/cutoff command is turned on and the Coulombic cutoff has been
|
||||
adjusted to match the user-specified accuracy. :dd
|
||||
|
||||
{Angle atoms missing at step %ld} :dt
|
||||
|
||||
One or more of 3 atoms needed to compute a particular angle are
|
||||
missing on this processor. Typically this is because the pairwise
|
||||
cutoff is set too short or the angle has blown apart and an atom is
|
||||
too far away. :dd
|
||||
|
||||
{Angle style in data file differs from currently defined angle style} :dt
|
||||
|
||||
Self-explanatory. :dd
|
||||
|
||||
{Atom style in data file differs from currently defined atom style} :dt
|
||||
|
||||
Self-explanatory. :dd
|
||||
|
||||
{Bond atom missing in box size check} :dt
|
||||
|
||||
The 2nd atoms needed to compute a particular bond is missing on this
|
||||
processor. Typically this is because the pairwise cutoff is set too
|
||||
short or the bond has blown apart and an atom is too far away. :dd
|
||||
|
||||
{Bond atom missing in image check} :dt
|
||||
|
||||
The 2nd atom in a particular bond is missing on this processor.
|
||||
Typically this is because the pairwise cutoff is set too short or the
|
||||
bond has blown apart and an atom is too far away. :dd
|
||||
|
||||
{Bond atoms missing at step %ld} :dt
|
||||
|
||||
The 2nd atom needed to compute a particular bond is missing on this
|
||||
processor. Typically this is because the pairwise cutoff is set too
|
||||
short or the bond has blown apart and an atom is too far away. :dd
|
||||
|
||||
{Bond style in data file differs from currently defined bond style} :dt
|
||||
|
||||
Self-explanatory. :dd
|
||||
|
||||
{Bond/angle/dihedral extent > half of periodic box length} :dt
|
||||
|
||||
This is a restriction because LAMMPS can be confused about which image
|
||||
of an atom in the bonded interaction is the correct one to use.
|
||||
"Extent" in this context means the maximum end-to-end length of the
|
||||
bond/angle/dihedral. LAMMPS computes this by taking the maximum bond
|
||||
length, multiplying by the number of bonds in the interaction (e.g. 3
|
||||
for a dihedral) and adding a small amount of stretch. :dd
|
||||
|
||||
{Both groups in compute group/group have a net charge; the Kspace boundary correction to energy will be non-zero} :dt
|
||||
|
||||
Self-explanatory. :dd
|
||||
|
||||
{Calling write_dump before a full system init.} :dt
|
||||
|
||||
The write_dump command is used before the system has been fully
|
||||
initialized as part of a 'run' or 'minimize' command. Not all dump
|
||||
styles and features are fully supported at this point and thus the
|
||||
command may fail or produce incomplete or incorrect output. Insert
|
||||
a "run 0" command, if a full system init is required. :dd
|
||||
|
||||
{Cannot count rigid body degrees-of-freedom before bodies are fully initialized} :dt
|
||||
|
||||
This means the temperature associated with the rigid bodies may be
|
||||
incorrect on this timestep. :dd
|
||||
|
||||
{Cannot count rigid body degrees-of-freedom before bodies are initialized} :dt
|
||||
|
||||
This means the temperature associated with the rigid bodies may be
|
||||
incorrect on this timestep. :dd
|
||||
|
||||
{Cannot include log terms without 1/r terms; setting flagHI to 1} :dt
|
||||
|
||||
Self-explanatory. :dd
|
||||
|
||||
{Cannot include log terms without 1/r terms; setting flagHI to 1.} :dt
|
||||
|
||||
Self-explanatory. :dd
|
||||
|
||||
{Charges are set, but coulombic solver is not used} :dt
|
||||
|
||||
Self-explanatory. :dd
|
||||
|
||||
{Charges did not converge at step %ld: %lg} :dt
|
||||
|
||||
Self-explanatory. :dd
|
||||
|
||||
{Communication cutoff is too small for SNAP micro load balancing, increased to %lf} :dt
|
||||
|
||||
Self-explanatory. :dd
|
||||
|
||||
{Compute cna/atom cutoff may be too large to find ghost atom neighbors} :dt
|
||||
|
||||
The neighbor cutoff used may not encompass enough ghost atoms
|
||||
to perform this operation correctly. :dd
|
||||
|
||||
{Computing temperature of portions of rigid bodies} :dt
|
||||
|
||||
The group defined by the temperature compute does not encompass all
|
||||
the atoms in one or more rigid bodies, so the change in
|
||||
degrees-of-freedom for the atoms in those partial rigid bodies will
|
||||
not be accounted for. :dd
|
||||
|
||||
{Create_bonds max distance > minimum neighbor cutoff} :dt
|
||||
|
||||
This means atom pairs for some atom types may not be in the neighbor
|
||||
list and thus no bond can be created between them. :dd
|
||||
|
||||
{Delete_atoms cutoff > minimum neighbor cutoff} :dt
|
||||
|
||||
This means atom pairs for some atom types may not be in the neighbor
|
||||
list and thus an atom in that pair cannot be deleted. :dd
|
||||
|
||||
{Dihedral atoms missing at step %ld} :dt
|
||||
|
||||
One or more of 4 atoms needed to compute a particular dihedral are
|
||||
missing on this processor. Typically this is because the pairwise
|
||||
cutoff is set too short or the dihedral has blown apart and an atom is
|
||||
too far away. :dd
|
||||
|
||||
{Dihedral problem} :dt
|
||||
|
||||
Conformation of the 4 listed dihedral atoms is extreme; you may want
|
||||
to check your simulation geometry. :dd
|
||||
|
||||
{Dihedral problem: %d %ld %d %d %d %d} :dt
|
||||
|
||||
Conformation of the 4 listed dihedral atoms is extreme; you may want
|
||||
to check your simulation geometry. :dd
|
||||
|
||||
{Dihedral style in data file differs from currently defined dihedral style} :dt
|
||||
|
||||
Self-explanatory. :dd
|
||||
|
||||
{Dump dcd/xtc timestamp may be wrong with fix dt/reset} :dt
|
||||
|
||||
If the fix changes the timestep, the dump dcd file will not
|
||||
reflect the change. :dd
|
||||
|
||||
{Energy due to X extra global DOFs will be included in minimizer energies} :dt
|
||||
|
||||
When using fixes like box/relax, the potential energy used by the minimizer
|
||||
is augmented by an additional energy provided by the fix. Thus the printed
|
||||
converged energy may be different from the total potential energy. :dd
|
||||
|
||||
{Energy tally does not account for 'zero yes'} :dt
|
||||
|
||||
The energy removed by using the 'zero yes' flag is not accounted
|
||||
for in the energy tally and thus energy conservation cannot be
|
||||
monitored in this case. :dd
|
||||
|
||||
{Estimated error in splitting of dispersion coeffs is %g} :dt
|
||||
|
||||
Error is greater than 0.0001 percent. :dd
|
||||
|
||||
{Ewald/disp Newton solver failed, using old method to estimate g_ewald} :dt
|
||||
|
||||
Self-explanatory. Choosing a different cutoff value may help. :dd
|
||||
|
||||
{FENE bond too long} :dt
|
||||
|
||||
A FENE bond has stretched dangerously far. It's interaction strength
|
||||
will be truncated to attempt to prevent the bond from blowing up. :dd
|
||||
|
||||
{FENE bond too long: %ld %d %d %g} :dt
|
||||
|
||||
A FENE bond has stretched dangerously far. It's interaction strength
|
||||
will be truncated to attempt to prevent the bond from blowing up. :dd
|
||||
|
||||
{FENE bond too long: %ld %g} :dt
|
||||
|
||||
A FENE bond has stretched dangerously far. It's interaction strength
|
||||
will be truncated to attempt to prevent the bond from blowing up. :dd
|
||||
|
||||
{Fix SRD walls overlap but fix srd overlap not set} :dt
|
||||
|
||||
You likely want to set this in your input script. :dd
|
||||
|
||||
{Fix bond/swap will ignore defined angles} :dt
|
||||
|
||||
See the doc page for fix bond/swap for more info on this
|
||||
restriction. :dd
|
||||
|
||||
{Fix deposit near setting < possible overlap separation %g} :dt
|
||||
|
||||
This test is performed for finite size particles with a diameter, not
|
||||
for point particles. The near setting is smaller than the particle
|
||||
diameter which can lead to overlaps. :dd
|
||||
|
||||
{Fix evaporate may delete atom with non-zero molecule ID} :dt
|
||||
|
||||
This is probably an error, since you should not delete only one atom
|
||||
of a molecule. :dd
|
||||
|
||||
{Fix gcmc using full_energy option} :dt
|
||||
|
||||
Fix gcmc has automatically turned on the full_energy option since it
|
||||
is required for systems like the one specified by the user. User input
|
||||
included one or more of the following: kspace, triclinic, a hybrid
|
||||
pair style, an eam pair style, or no "single" function for the pair
|
||||
style. :dd
|
||||
|
||||
{Fix property/atom mol or charge w/out ghost communication} :dt
|
||||
|
||||
A model typically needs these properties defined for ghost atoms. :dd
|
||||
|
||||
{Fix qeq CG convergence failed (%g) after %d iterations at %ld step} :dt
|
||||
|
||||
Self-explanatory. :dd
|
||||
|
||||
{Fix qeq has non-zero lower Taper radius cutoff} :dt
|
||||
|
||||
Absolute value must be <= 0.01. :dd
|
||||
|
||||
{Fix qeq has very low Taper radius cutoff} :dt
|
||||
|
||||
Value should typically be >= 5.0. :dd
|
||||
|
||||
{Fix qeq/dynamic tolerance may be too small for damped dynamics} :dt
|
||||
|
||||
Self-explanatory. :dd
|
||||
|
||||
{Fix qeq/fire tolerance may be too small for damped fires} :dt
|
||||
|
||||
Self-explanatory. :dd
|
||||
|
||||
{Fix rattle should come after all other integration fixes} :dt
|
||||
|
||||
This fix is designed to work after all other integration fixes change
|
||||
atom positions. Thus it should be the last integration fix specified.
|
||||
If not, it will not satisfy the desired constraints as well as it
|
||||
otherwise would. :dd
|
||||
|
||||
{Fix recenter should come after all other integration fixes} :dt
|
||||
|
||||
Other fixes may change the position of the center-of-mass, so
|
||||
fix recenter should come last. :dd
|
||||
|
||||
{Fix srd SRD moves may trigger frequent reneighboring} :dt
|
||||
|
||||
This is because the SRD particles may move long distances. :dd
|
||||
|
||||
{Fix srd grid size > 1/4 of big particle diameter} :dt
|
||||
|
||||
This may cause accuracy problems. :dd
|
||||
|
||||
{Fix srd particle moved outside valid domain} :dt
|
||||
|
||||
This may indicate a problem with your simulation parameters. :dd
|
||||
|
||||
{Fix srd particles may move > big particle diameter} :dt
|
||||
|
||||
This may cause accuracy problems. :dd
|
||||
|
||||
{Fix srd viscosity < 0.0 due to low SRD density} :dt
|
||||
|
||||
This may cause accuracy problems. :dd
|
||||
|
||||
{Fixes cannot send data in Kokkos communication, switching to classic communication} :dt
|
||||
|
||||
This is current restriction with Kokkos. :dd
|
||||
|
||||
{For better accuracy use 'pair_modify table 0'} :dt
|
||||
|
||||
The user-specified force accuracy cannot be achieved unless the table
|
||||
feature is disabled by using 'pair_modify table 0'. :dd
|
||||
|
||||
{Geometric mixing assumed for 1/r^6 coefficients} :dt
|
||||
|
||||
Self-explanatory. :dd
|
||||
|
||||
{Group for fix_modify temp != fix group} :dt
|
||||
|
||||
The fix_modify command is specifying a temperature computation that
|
||||
computes a temperature on a different group of atoms than the fix
|
||||
itself operates on. This is probably not what you want to do. :dd
|
||||
|
||||
{H matrix size has been exceeded: m_fill=%d H.m=%d\n} :dt
|
||||
|
||||
This is the size of the matrix. :dd
|
||||
|
||||
{Ignoring unknown or incorrect info command flag} :dt
|
||||
|
||||
Self-explanatory. An unknown argument was given to the info command.
|
||||
Compare your input with the documentation. :dd
|
||||
|
||||
{Improper atoms missing at step %ld} :dt
|
||||
|
||||
One or more of 4 atoms needed to compute a particular improper are
|
||||
missing on this processor. Typically this is because the pairwise
|
||||
cutoff is set too short or the improper has blown apart and an atom is
|
||||
too far away. :dd
|
||||
|
||||
{Improper problem: %d %ld %d %d %d %d} :dt
|
||||
|
||||
Conformation of the 4 listed improper atoms is extreme; you may want
|
||||
to check your simulation geometry. :dd
|
||||
|
||||
{Improper style in data file differs from currently defined improper style} :dt
|
||||
|
||||
Self-explanatory. :dd
|
||||
|
||||
{Inconsistent image flags} :dt
|
||||
|
||||
The image flags for a pair on bonded atoms appear to be inconsistent.
|
||||
Inconsistent means that when the coordinates of the two atoms are
|
||||
unwrapped using the image flags, the two atoms are far apart.
|
||||
Specifically they are further apart than half a periodic box length.
|
||||
Or they are more than a box length apart in a non-periodic dimension.
|
||||
This is usually due to the initial data file not having correct image
|
||||
flags for the 2 atoms in a bond that straddles a periodic boundary.
|
||||
They should be different by 1 in that case. This is a warning because
|
||||
inconsistent image flags will not cause problems for dynamics or most
|
||||
LAMMPS simulations. However they can cause problems when such atoms
|
||||
are used with the fix rigid or replicate commands. Note that if you
|
||||
have an infinite periodic crystal with bonds then it is impossible to
|
||||
have fully consistent image flags, since some bonds will cross
|
||||
periodic boundaries and connect two atoms with the same image
|
||||
flag. :dd
|
||||
|
||||
{KIM Model does not provide 'energy'; Potential energy will be zero} :dt
|
||||
|
||||
Self-explanatory. :dd
|
||||
|
||||
{KIM Model does not provide 'forces'; Forces will be zero} :dt
|
||||
|
||||
Self-explanatory. :dd
|
||||
|
||||
{KIM Model does not provide 'particleEnergy'; energy per atom will be zero} :dt
|
||||
|
||||
Self-explanatory. :dd
|
||||
|
||||
{KIM Model does not provide 'particleVirial'; virial per atom will be zero} :dt
|
||||
|
||||
Self-explanatory. :dd
|
||||
|
||||
{Kspace_modify slab param < 2.0 may cause unphysical behavior} :dt
|
||||
|
||||
The kspace_modify slab parameter should be larger to insure periodic
|
||||
grids padded with empty space do not overlap. :dd
|
||||
|
||||
{Less insertions than requested} :dt
|
||||
|
||||
The fix pour command was unsuccessful at finding open space
|
||||
for as many particles as it tried to insert. :dd
|
||||
|
||||
{Library error in lammps_gather_atoms} :dt
|
||||
|
||||
This library function cannot be used if atom IDs are not defined
|
||||
or are not consecutively numbered. :dd
|
||||
|
||||
{Library error in lammps_scatter_atoms} :dt
|
||||
|
||||
This library function cannot be used if atom IDs are not defined or
|
||||
are not consecutively numbered, or if no atom map is defined. See the
|
||||
atom_modify command for details about atom maps. :dd
|
||||
|
||||
{Lost atoms via change_box: original %ld current %ld} :dt
|
||||
|
||||
The command options you have used caused atoms to be lost. :dd
|
||||
|
||||
{Lost atoms via displace_atoms: original %ld current %ld} :dt
|
||||
|
||||
The command options you have used caused atoms to be lost. :dd
|
||||
|
||||
{Lost atoms: original %ld current %ld} :dt
|
||||
|
||||
Lost atoms are checked for each time thermo output is done. See the
|
||||
thermo_modify lost command for options. Lost atoms usually indicate
|
||||
bad dynamics, e.g. atoms have been blown far out of the simulation
|
||||
box, or moved further than one processor's sub-domain away before
|
||||
reneighboring. :dd
|
||||
|
||||
{MSM mesh too small, increasing to 2 points in each direction} :dt
|
||||
|
||||
Self-explanatory. :dd
|
||||
|
||||
{Mismatch between velocity and compute groups} :dt
|
||||
|
||||
The temperature computation used by the velocity command will not be
|
||||
on the same group of atoms that velocities are being set for. :dd
|
||||
|
||||
{Mixing forced for lj coefficients} :dt
|
||||
|
||||
Self-explanatory. :dd
|
||||
|
||||
{Molecule attributes do not match system attributes} :dt
|
||||
|
||||
An attribute is specified (e.g. diameter, charge) that is
|
||||
not defined for the specified atom style. :dd
|
||||
|
||||
{Molecule has bond topology but no special bond settings} :dt
|
||||
|
||||
This means the bonded atoms will not be excluded in pair-wise
|
||||
interactions. :dd
|
||||
|
||||
{Molecule template for create_atoms has multiple molecules} :dt
|
||||
|
||||
The create_atoms command will only create molecules of a single type,
|
||||
i.e. the first molecule in the template. :dd
|
||||
|
||||
{Molecule template for fix gcmc has multiple molecules} :dt
|
||||
|
||||
The fix gcmc command will only create molecules of a single type,
|
||||
i.e. the first molecule in the template. :dd
|
||||
|
||||
{Molecule template for fix shake has multiple molecules} :dt
|
||||
|
||||
The fix shake command will only recognize molecules of a single
|
||||
type, i.e. the first molecule in the template. :dd
|
||||
|
||||
{More than one compute centro/atom} :dt
|
||||
|
||||
It is not efficient to use compute centro/atom more than once. :dd
|
||||
|
||||
{More than one compute cluster/atom} :dt
|
||||
|
||||
It is not efficient to use compute cluster/atom more than once. :dd
|
||||
|
||||
{More than one compute cna/atom defined} :dt
|
||||
|
||||
It is not efficient to use compute cna/atom more than once. :dd
|
||||
|
||||
{More than one compute contact/atom} :dt
|
||||
|
||||
It is not efficient to use compute contact/atom more than once. :dd
|
||||
|
||||
{More than one compute coord/atom} :dt
|
||||
|
||||
It is not efficient to use compute coord/atom more than once. :dd
|
||||
|
||||
{More than one compute damage/atom} :dt
|
||||
|
||||
It is not efficient to use compute ke/atom more than once. :dd
|
||||
|
||||
{More than one compute dilatation/atom} :dt
|
||||
|
||||
Self-explanatory. :dd
|
||||
|
||||
{More than one compute erotate/sphere/atom} :dt
|
||||
|
||||
It is not efficient to use compute erorate/sphere/atom more than once. :dd
|
||||
|
||||
{More than one compute hexorder/atom} :dt
|
||||
|
||||
It is not efficient to use compute hexorder/atom more than once. :dd
|
||||
|
||||
{More than one compute ke/atom} :dt
|
||||
|
||||
It is not efficient to use compute ke/atom more than once. :dd
|
||||
|
||||
{More than one compute orientorder/atom} :dt
|
||||
|
||||
It is not efficient to use compute orientorder/atom more than once. :dd
|
||||
|
||||
{More than one compute plasticity/atom} :dt
|
||||
|
||||
Self-explanatory. :dd
|
||||
|
||||
{More than one compute sna/atom} :dt
|
||||
|
||||
Self-explanatory. :dd
|
||||
|
||||
{More than one compute snad/atom} :dt
|
||||
|
||||
Self-explanatory. :dd
|
||||
|
||||
{More than one compute snav/atom} :dt
|
||||
|
||||
Self-explanatory. :dd
|
||||
|
||||
{More than one fix poems} :dt
|
||||
|
||||
It is not efficient to use fix poems more than once. :dd
|
||||
|
||||
{More than one fix rigid} :dt
|
||||
|
||||
It is not efficient to use fix rigid more than once. :dd
|
||||
|
||||
{Neighbor exclusions used with KSpace solver may give inconsistent Coulombic energies} :dt
|
||||
|
||||
This is because excluding specific pair interactions also excludes
|
||||
them from long-range interactions which may not be the desired effect.
|
||||
The special_bonds command handles this consistently by insuring
|
||||
excluded (or weighted) 1-2, 1-3, 1-4 interactions are treated
|
||||
consistently by both the short-range pair style and the long-range
|
||||
solver. This is not done for exclusions of charged atom pairs via the
|
||||
neigh_modify exclude command. :dd
|
||||
|
||||
{New thermo_style command, previous thermo_modify settings will be lost} :dt
|
||||
|
||||
If a thermo_style command is used after a thermo_modify command, the
|
||||
settings changed by the thermo_modify command will be reset to their
|
||||
default values. This is because the thermo_modify command acts on
|
||||
the currently defined thermo style, and a thermo_style command creates
|
||||
a new style. :dd
|
||||
|
||||
{No Kspace calculation with verlet/split} :dt
|
||||
|
||||
The 2nd partition performs a kspace calculation so the kspace_style
|
||||
command must be used. :dd
|
||||
|
||||
{No automatic unit conversion to XTC file format conventions possible for units lj} :dt
|
||||
|
||||
This means no scaling will be performed. :dd
|
||||
|
||||
{No fixes defined, atoms won't move} :dt
|
||||
|
||||
If you are not using a fix like nve, nvt, npt then atom velocities and
|
||||
coordinates will not be updated during timestepping. :dd
|
||||
|
||||
{No joints between rigid bodies, use fix rigid instead} :dt
|
||||
|
||||
The bodies defined by fix poems are not connected by joints. POEMS
|
||||
will integrate the body motion, but it would be more efficient to use
|
||||
fix rigid. :dd
|
||||
|
||||
{Not using real units with pair reax} :dt
|
||||
|
||||
This is most likely an error, unless you have created your own ReaxFF
|
||||
parameter file in a different set of units. :dd
|
||||
|
||||
{Number of MSM mesh points changed to be a multiple of 2} :dt
|
||||
|
||||
MSM requires that the number of grid points in each direction be a multiple
|
||||
of two and the number of grid points in one or more directions have been
|
||||
adjusted to meet this requirement. :dd
|
||||
|
||||
{OMP_NUM_THREADS environment is not set.} :dt
|
||||
|
||||
This environment variable must be set appropriately to use the
|
||||
USER-OMP package. :dd
|
||||
|
||||
{One or more atoms are time integrated more than once} :dt
|
||||
|
||||
This is probably an error since you typically do not want to
|
||||
advance the positions or velocities of an atom more than once
|
||||
per timestep. :dd
|
||||
|
||||
{One or more chunks do not contain all atoms in molecule} :dt
|
||||
|
||||
This may not be what you intended. :dd
|
||||
|
||||
{One or more dynamic groups may not be updated at correct point in timestep} :dt
|
||||
|
||||
If there are other fixes that act immediately after the initial stage
|
||||
of time integration within a timestep (i.e. after atoms move), then
|
||||
the command that sets up the dynamic group should appear after those
|
||||
fixes. This will insure that dynamic group assignments are made
|
||||
after all atoms have moved. :dd
|
||||
|
||||
{One or more respa levels compute no forces} :dt
|
||||
|
||||
This is computationally inefficient. :dd
|
||||
|
||||
{Pair COMB charge %.10f with force %.10f hit max barrier} :dt
|
||||
|
||||
Something is possibly wrong with your model. :dd
|
||||
|
||||
{Pair COMB charge %.10f with force %.10f hit min barrier} :dt
|
||||
|
||||
Something is possibly wrong with your model. :dd
|
||||
|
||||
{Pair brownian needs newton pair on for momentum conservation} :dt
|
||||
|
||||
Self-explanatory. :dd
|
||||
|
||||
{Pair dpd needs newton pair on for momentum conservation} :dt
|
||||
|
||||
Self-explanatory. :dd
|
||||
|
||||
{Pair dsmc: num_of_collisions > number_of_A} :dt
|
||||
|
||||
Collision model in DSMC is breaking down. :dd
|
||||
|
||||
{Pair dsmc: num_of_collisions > number_of_B} :dt
|
||||
|
||||
Collision model in DSMC is breaking down. :dd
|
||||
|
||||
{Pair style in data file differs from currently defined pair style} :dt
|
||||
|
||||
Self-explanatory. :dd
|
||||
|
||||
{Pair style restartinfo set but has no restart support} :dt
|
||||
|
||||
This pair style has a bug, where it does not support reading and
|
||||
writing information to a restart file, but does not set the member
|
||||
variable "restartinfo" to 0 as required in that case. :dd
|
||||
|
||||
{Particle deposition was unsuccessful} :dt
|
||||
|
||||
The fix deposit command was not able to insert as many atoms as
|
||||
needed. The requested volume fraction may be too high, or other atoms
|
||||
may be in the insertion region. :dd
|
||||
|
||||
{Proc sub-domain size < neighbor skin, could lead to lost atoms} :dt
|
||||
|
||||
The decomposition of the physical domain (likely due to load
|
||||
balancing) has led to a processor's sub-domain being smaller than the
|
||||
neighbor skin in one or more dimensions. Since reneighboring is
|
||||
triggered by atoms moving the skin distance, this may lead to lost
|
||||
atoms, if an atom moves all the way across a neighboring processor's
|
||||
sub-domain before reneighboring is triggered. :dd
|
||||
|
||||
{Reducing PPPM order b/c stencil extends beyond nearest neighbor processor} :dt
|
||||
|
||||
This may lead to a larger grid than desired. See the kspace_modify overlap
|
||||
command to prevent changing of the PPPM order. :dd
|
||||
|
||||
{Reducing PPPMDisp Coulomb order b/c stencil extends beyond neighbor processor} :dt
|
||||
|
||||
This may lead to a larger grid than desired. See the kspace_modify overlap
|
||||
command to prevent changing of the PPPM order. :dd
|
||||
|
||||
{Reducing PPPMDisp dispersion order b/c stencil extends beyond neighbor processor} :dt
|
||||
|
||||
This may lead to a larger grid than desired. See the kspace_modify overlap
|
||||
command to prevent changing of the PPPM order. :dd
|
||||
|
||||
{Replacing a fix, but new group != old group} :dt
|
||||
|
||||
The ID and style of a fix match for a fix you are changing with a fix
|
||||
command, but the new group you are specifying does not match the old
|
||||
group. :dd
|
||||
|
||||
{Replicating in a non-periodic dimension} :dt
|
||||
|
||||
The parameters for a replicate command will cause a non-periodic
|
||||
dimension to be replicated; this may cause unwanted behavior. :dd
|
||||
|
||||
{Resetting reneighboring criteria during PRD} :dt
|
||||
|
||||
A PRD simulation requires that neigh_modify settings be delay = 0,
|
||||
every = 1, check = yes. Since these settings were not in place,
|
||||
LAMMPS changed them and will restore them to their original values
|
||||
after the PRD simulation. :dd
|
||||
|
||||
{Resetting reneighboring criteria during TAD} :dt
|
||||
|
||||
A TAD simulation requires that neigh_modify settings be delay = 0,
|
||||
every = 1, check = yes. Since these settings were not in place,
|
||||
LAMMPS changed them and will restore them to their original values
|
||||
after the PRD simulation. :dd
|
||||
|
||||
{Resetting reneighboring criteria during minimization} :dt
|
||||
|
||||
Minimization requires that neigh_modify settings be delay = 0, every =
|
||||
1, check = yes. Since these settings were not in place, LAMMPS
|
||||
changed them and will restore them to their original values after the
|
||||
minimization. :dd
|
||||
|
||||
{Restart file used different # of processors} :dt
|
||||
|
||||
The restart file was written out by a LAMMPS simulation running on a
|
||||
different number of processors. Due to round-off, the trajectories of
|
||||
your restarted simulation may diverge a little more quickly than if
|
||||
you ran on the same # of processors. :dd
|
||||
|
||||
{Restart file used different 3d processor grid} :dt
|
||||
|
||||
The restart file was written out by a LAMMPS simulation running on a
|
||||
different 3d grid of processors. Due to round-off, the trajectories
|
||||
of your restarted simulation may diverge a little more quickly than if
|
||||
you ran on the same # of processors. :dd
|
||||
|
||||
{Restart file used different boundary settings, using restart file values} :dt
|
||||
|
||||
Your input script cannot change these restart file settings. :dd
|
||||
|
||||
{Restart file used different newton bond setting, using restart file value} :dt
|
||||
|
||||
The restart file value will override the setting in the input script. :dd
|
||||
|
||||
{Restart file used different newton pair setting, using input script value} :dt
|
||||
|
||||
The input script value will override the setting in the restart file. :dd
|
||||
|
||||
{Restrain problem: %d %ld %d %d %d %d} :dt
|
||||
|
||||
Conformation of the 4 listed dihedral atoms is extreme; you may want
|
||||
to check your simulation geometry. :dd
|
||||
|
||||
{Running PRD with only one replica} :dt
|
||||
|
||||
This is allowed, but you will get no parallel speed-up. :dd
|
||||
|
||||
{SRD bin shifting turned on due to small lamda} :dt
|
||||
|
||||
This is done to try to preserve accuracy. :dd
|
||||
|
||||
{SRD bin size for fix srd differs from user request} :dt
|
||||
|
||||
Fix SRD had to adjust the bin size to fit the simulation box. See the
|
||||
cubic keyword if you want this message to be an error vs warning. :dd
|
||||
|
||||
{SRD bins for fix srd are not cubic enough} :dt
|
||||
|
||||
The bin shape is not within tolerance of cubic. See the cubic
|
||||
keyword if you want this message to be an error vs warning. :dd
|
||||
|
||||
{SRD particle %d started inside big particle %d on step %ld bounce %d} :dt
|
||||
|
||||
See the inside keyword if you want this message to be an error vs
|
||||
warning. :dd
|
||||
|
||||
{SRD particle %d started inside wall %d on step %ld bounce %d} :dt
|
||||
|
||||
See the inside keyword if you want this message to be an error vs
|
||||
warning. :dd
|
||||
|
||||
{Shake determinant < 0.0} :dt
|
||||
|
||||
The determinant of the quadratic equation being solved for a single
|
||||
cluster specified by the fix shake command is numerically suspect. LAMMPS
|
||||
will set it to 0.0 and continue. :dd
|
||||
|
||||
{Shell command '%s' failed with error '%s'} :dt
|
||||
|
||||
Self-explanatory. :dd
|
||||
|
||||
{Shell command returned with non-zero status} :dt
|
||||
|
||||
This may indicate the shell command did not operate as expected. :dd
|
||||
|
||||
{Should not allow rigid bodies to bounce off relecting walls} :dt
|
||||
|
||||
LAMMPS allows this, but their dynamics are not computed correctly. :dd
|
||||
|
||||
{Should not use fix nve/limit with fix shake or fix rattle} :dt
|
||||
|
||||
This will lead to invalid constraint forces in the SHAKE/RATTLE
|
||||
computation. :dd
|
||||
|
||||
{Simulations might be very slow because of large number of structure factors} :dt
|
||||
|
||||
Self-explanatory. :dd
|
||||
|
||||
{Slab correction not needed for MSM} :dt
|
||||
|
||||
Slab correction is intended to be used with Ewald or PPPM and is not needed by MSM. :dd
|
||||
|
||||
{System is not charge neutral, net charge = %g} :dt
|
||||
|
||||
The total charge on all atoms on the system is not 0.0.
|
||||
For some KSpace solvers this is only a warning. :dd
|
||||
|
||||
{Table inner cutoff >= outer cutoff} :dt
|
||||
|
||||
You specified an inner cutoff for a Coulombic table that is longer
|
||||
than the global cutoff. Probably not what you wanted. :dd
|
||||
|
||||
{Temperature for MSST is not for group all} :dt
|
||||
|
||||
User-assigned temperature to MSST fix does not compute temperature for
|
||||
all atoms. Since MSST computes a global pressure, the kinetic energy
|
||||
contribution from the temperature is assumed to also be for all atoms.
|
||||
Thus the pressure used by MSST could be inaccurate. :dd
|
||||
|
||||
{Temperature for NPT is not for group all} :dt
|
||||
|
||||
User-assigned temperature to NPT fix does not compute temperature for
|
||||
all atoms. Since NPT computes a global pressure, the kinetic energy
|
||||
contribution from the temperature is assumed to also be for all atoms.
|
||||
Thus the pressure used by NPT could be inaccurate. :dd
|
||||
|
||||
{Temperature for fix modify is not for group all} :dt
|
||||
|
||||
The temperature compute is being used with a pressure calculation
|
||||
which does operate on group all, so this may be inconsistent. :dd
|
||||
|
||||
{Temperature for thermo pressure is not for group all} :dt
|
||||
|
||||
User-assigned temperature to thermo via the thermo_modify command does
|
||||
not compute temperature for all atoms. Since thermo computes a global
|
||||
pressure, the kinetic energy contribution from the temperature is
|
||||
assumed to also be for all atoms. Thus the pressure printed by thermo
|
||||
could be inaccurate. :dd
|
||||
|
||||
{The fix ave/spatial command has been replaced by the more flexible fix ave/chunk and compute chunk/atom commands -- fix ave/spatial will be removed in the summer of 2015} :dt
|
||||
|
||||
Self-explanatory. :dd
|
||||
|
||||
{The minimizer does not re-orient dipoles when using fix efield} :dt
|
||||
|
||||
This means that only the atom coordinates will be minimized,
|
||||
not the orientation of the dipoles. :dd
|
||||
|
||||
{Too many common neighbors in CNA %d times} :dt
|
||||
|
||||
More than the maximum # of neighbors was found multiple times. This
|
||||
was unexpected. :dd
|
||||
|
||||
{Too many inner timesteps in fix ttm} :dt
|
||||
|
||||
Self-explanatory. :dd
|
||||
|
||||
{Too many neighbors in CNA for %d atoms} :dt
|
||||
|
||||
More than the maximum # of neighbors was found multiple times. This
|
||||
was unexpected. :dd
|
||||
|
||||
{Triclinic box skew is large} :dt
|
||||
|
||||
The displacement in a skewed direction is normally required to be less
|
||||
than half the box length in that dimension. E.g. the xy tilt must be
|
||||
between -half and +half of the x box length. You have relaxed the
|
||||
constraint using the box tilt command, but the warning means that a
|
||||
LAMMPS simulation may be inefficient as a result. :dd
|
||||
|
||||
{Use special bonds = 0,1,1 with bond style fene} :dt
|
||||
|
||||
Most FENE models need this setting for the special_bonds command. :dd
|
||||
|
||||
{Use special bonds = 0,1,1 with bond style fene/expand} :dt
|
||||
|
||||
Most FENE models need this setting for the special_bonds command. :dd
|
||||
|
||||
{Using a manybody potential with bonds/angles/dihedrals and special_bond exclusions} :dt
|
||||
|
||||
This is likely not what you want to do. The exclusion settings will
|
||||
eliminate neighbors in the neighbor list, which the manybody potential
|
||||
needs to calculated its terms correctly. :dd
|
||||
|
||||
{Using compute temp/deform with inconsistent fix deform remap option} :dt
|
||||
|
||||
Fix nvt/sllod assumes deforming atoms have a velocity profile provided
|
||||
by "remap v" or "remap none" as a fix deform option. :dd
|
||||
|
||||
{Using compute temp/deform with no fix deform defined} :dt
|
||||
|
||||
This is probably an error, since it makes little sense to use
|
||||
compute temp/deform in this case. :dd
|
||||
|
||||
{Using fix srd with box deformation but no SRD thermostat} :dt
|
||||
|
||||
The deformation will heat the SRD particles so this can
|
||||
be dangerous. :dd
|
||||
|
||||
{Using kspace solver on system with no charge} :dt
|
||||
|
||||
Self-explanatory. :dd
|
||||
|
||||
{Using largest cut-off for lj/long/dipole/long long long} :dt
|
||||
|
||||
Self-explanatory. :dd
|
||||
|
||||
{Using largest cutoff for buck/long/coul/long} :dt
|
||||
|
||||
Self-explanatory. :dd
|
||||
|
||||
{Using largest cutoff for lj/long/coul/long} :dt
|
||||
|
||||
Self-explanatory. :dd
|
||||
|
||||
{Using largest cutoff for pair_style lj/long/tip4p/long} :dt
|
||||
|
||||
Self-explanatory. :dd
|
||||
|
||||
{Using package gpu without any pair style defined} :dt
|
||||
|
||||
Self-explanatory. :dd
|
||||
|
||||
{Using pair potential shift with pair_modify compute no} :dt
|
||||
|
||||
The shift effects will thus not be computed. :dd
|
||||
|
||||
{Using pair tail corrections with nonperiodic system} :dt
|
||||
|
||||
This is probably a bogus thing to do, since tail corrections are
|
||||
computed by integrating the density of a periodic system out to
|
||||
infinity. :dd
|
||||
|
||||
{Using pair tail corrections with pair_modify compute no} :dt
|
||||
|
||||
The tail corrections will thus not be computed. :dd
|
||||
|
||||
{pair style reax is now deprecated and will soon be retired. Users should switch to pair_style reax/c} :dt
|
||||
|
||||
Self-explanatory. :dd
|
||||
|
||||
:dle
|
||||
@ -1,12 +1,14 @@
|
||||
"Previous Section"_Section_howto.html - "LAMMPS WWW Site"_lws - "LAMMPS Documentation"_ld - "LAMMPS Commands"_lc - "Next Section"_Section_perf.html :c
|
||||
"Previous Section"_Howto.html - "LAMMPS WWW Site"_lws - "LAMMPS
|
||||
Documentation"_ld - "LAMMPS Commands"_lc - "Next
|
||||
Section"_Tools.html :c
|
||||
|
||||
:link(lws,http://lammps.sandia.gov)
|
||||
:link(ld,Manual.html)
|
||||
:link(lc,Section_commands.html#comm)
|
||||
:link(lc,Commands_all.html)
|
||||
|
||||
:line
|
||||
|
||||
7. Example problems :h2
|
||||
Example scripts :h3
|
||||
|
||||
The LAMMPS distribution includes an examples sub-directory with many
|
||||
sample problems. Many are 2d models that run quickly are are
|
||||
@ -46,7 +48,7 @@ Lists of both kinds of directories are given below.
|
||||
|
||||
:line
|
||||
|
||||
Lowercase directories :h3
|
||||
Lowercase directories :h4
|
||||
|
||||
accelerate: run with various acceleration options (OpenMP, GPU, Phi)
|
||||
airebo: polyethylene with AIREBO potential
|
||||
@ -110,10 +112,10 @@ web site.
|
||||
|
||||
If you uncomment the "dump image"_dump_image.html line(s) in the input
|
||||
script a series of JPG images will be produced by the run (assuming
|
||||
you built LAMMPS with JPG support; see "Section
|
||||
2.2"_Section_start.html#start_2 for details). These can be viewed
|
||||
individually or turned into a movie or animated by tools like
|
||||
ImageMagick or QuickTime or various Windows-based tools. See the
|
||||
you built LAMMPS with JPG support; see the
|
||||
"Build_settings"_Build_settings.html doc page for details). These can
|
||||
be viewed individually or turned into a movie or animated by tools
|
||||
like ImageMagick or QuickTime or various Windows-based tools. See the
|
||||
"dump image"_dump_image.html doc page for more details. E.g. this
|
||||
Imagemagick command would create a GIF file suitable for viewing in a
|
||||
browser.
|
||||
@ -122,7 +124,7 @@ browser.
|
||||
|
||||
:line
|
||||
|
||||
Uppercase directories :h3
|
||||
Uppercase directories :h4
|
||||
|
||||
ASPHERE: various aspherical particle models, using ellipsoids, rigid bodies, line/triangle particles, etc
|
||||
COUPLE: examples of how to use LAMMPS as a library
|
||||
@ -141,5 +143,5 @@ The USER directory has a large number of sub-directories which
|
||||
correspond by name to a USER package. They contain scripts that
|
||||
illustrate how to use the command(s) provided in that package. Many
|
||||
of the sub-directories have their own README files which give further
|
||||
instructions. See the "Section 4"_Section_packages.html doc
|
||||
instructions. See the "Packages_details"_Packages_details.html doc
|
||||
page for more info on specific USER packages.
|
||||
191
doc/src/Howto.txt
Normal file
@ -0,0 +1,191 @@
|
||||
"Previous Section"_Performance.html - "LAMMPS WWW Site"_lws -
|
||||
"LAMMPS Documentation"_ld - "LAMMPS Commands"_lc - "Next
|
||||
Section"_Examples.html :c
|
||||
|
||||
:link(lws,http://lammps.sandia.gov)
|
||||
:link(ld,Manual.html)
|
||||
:link(lc,Commands.html#comm)
|
||||
|
||||
:line
|
||||
|
||||
Howto discussions :h2
|
||||
|
||||
These doc pages describe how to perform various tasks with LAMMPS,
|
||||
both for users and developers. The
|
||||
"glossary"_http://lammps.sandia.gov website page also lists MD
|
||||
terminology with links to corresponding LAMMPS manual pages. The
|
||||
example input scripts included in the examples dir of the LAMMPS
|
||||
distribution and highlighted on the "Examples"_Examples.html doc page
|
||||
also show how to setup and run various kinds of simulations.
|
||||
|
||||
Tutorials howto :h3
|
||||
|
||||
<!-- RST
|
||||
|
||||
.. toctree::
|
||||
:name: tutorials
|
||||
:maxdepth: 1
|
||||
|
||||
Howto_github
|
||||
Howto_pylammps
|
||||
Howto_bash
|
||||
|
||||
END_RST -->
|
||||
|
||||
<!-- HTML_ONLY -->
|
||||
|
||||
"Using GitHub with LAMMPS"_Howto_github.html
|
||||
"PyLAMMPS interface to LAMMPS"_Howto_pylammps.html
|
||||
"Using LAMMPS with bash on Windows"_Howto_bash.html :all(b)
|
||||
|
||||
<!-- END_HTML_ONLY -->
|
||||
|
||||
General howto :h3
|
||||
|
||||
<!-- RST
|
||||
|
||||
.. toctree::
|
||||
:name: general
|
||||
:maxdepth: 1
|
||||
|
||||
Howto_restart
|
||||
Howto_viz
|
||||
Howto_multiple
|
||||
Howto_replica
|
||||
Howto_library
|
||||
Howto_couple
|
||||
Howto_client_server
|
||||
|
||||
END_RST -->
|
||||
|
||||
<!-- HTML_ONLY -->
|
||||
|
||||
"Restart a simulation"_Howto_restart.html
|
||||
"Visualize LAMMPS snapshots"_Howto_viz.html
|
||||
"Run multiple simulations from one input script"_Howto_multiple.html
|
||||
"Multi-replica simulations"_Howto_replica.html
|
||||
"Library interface to LAMMPS"_Howto_library.html
|
||||
"Couple LAMMPS to other codes"_Howto_couple.html
|
||||
"Using LAMMPS in client/server mode"_Howto_client_server.html :all(b)
|
||||
|
||||
<!-- END_HTML_ONLY -->
|
||||
|
||||
Settings howto :h3
|
||||
|
||||
<!-- RST
|
||||
|
||||
.. toctree::
|
||||
:name: settings
|
||||
:maxdepth: 1
|
||||
|
||||
Howto_2d
|
||||
Howto_triclinic
|
||||
Howto_thermostat
|
||||
Howto_barostat
|
||||
Howto_walls
|
||||
Howto_nemd
|
||||
Howto_dispersion
|
||||
|
||||
END_RST -->
|
||||
|
||||
<!-- HTML_ONLY -->
|
||||
|
||||
"2d simulations"_Howto_2d.html
|
||||
"Triclinic (non-orthogonal) simulation boxes"_Howto_triclinic.html
|
||||
"Thermostats"_Howto_thermostat.html
|
||||
"Barostats"_Howto_barostat.html
|
||||
"Walls"_Howto_walls.html
|
||||
"NEMD simulations"_Howto_nemd.html
|
||||
"Long-range dispersion settings"_Howto_dispersion.html :all(b)
|
||||
|
||||
<!-- END_HTML_ONLY -->
|
||||
|
||||
|
||||
Analysis howto :h3
|
||||
|
||||
<!-- RST
|
||||
|
||||
.. toctree::
|
||||
:name: analysis
|
||||
:maxdepth: 1
|
||||
|
||||
Howto_output
|
||||
Howto_chunk
|
||||
Howto_temperature
|
||||
Howto_elastic
|
||||
Howto_kappa
|
||||
Howto_viscosity
|
||||
Howto_diffusion
|
||||
|
||||
END_RST -->
|
||||
|
||||
<!-- HTML_ONLY -->
|
||||
|
||||
"Output from LAMMPS (thermo, dumps, computes, fixes, variables)"_Howto_output.html
|
||||
"Use chunks to calculate system properties"_Howto_chunk.html :all(b)
|
||||
"Calculate temperature"_Howto_temperature.html
|
||||
"Calculate elastic constants"_Howto_elastic.html
|
||||
"Calculate thermal conductivity"_Howto_kappa.html
|
||||
"Calculate viscosity"_Howto_viscosity.html
|
||||
"Calculate a diffusion coefficient"_Howto_diffusion.html :all(b)
|
||||
|
||||
<!-- END_HTML_ONLY -->
|
||||
|
||||
Force fields howto :h3
|
||||
|
||||
<!-- RST
|
||||
|
||||
.. toctree::
|
||||
:name: force
|
||||
:maxdepth: 1
|
||||
|
||||
Howto_bioFF
|
||||
Howto_tip3p
|
||||
Howto_tip4p
|
||||
Howto_spc
|
||||
|
||||
END_RST -->
|
||||
|
||||
<!-- HTML_ONLY -->
|
||||
|
||||
"CHARMM, AMBER, and DREIDING force fields"_Howto_bioFF.html
|
||||
"TIP3P water model"_Howto_tip3p.html
|
||||
"TIP4P water model"_Howto_tip4p.html
|
||||
"SPC water model"_Howto_spc.html :all(b)
|
||||
|
||||
<!-- END_HTML_ONLY -->
|
||||
|
||||
Packages howto :h3
|
||||
|
||||
<!-- RST
|
||||
|
||||
.. toctree::
|
||||
:name: packages
|
||||
:maxdepth: 1
|
||||
|
||||
Howto_spherical
|
||||
Howto_granular
|
||||
Howto_body
|
||||
Howto_polarizable
|
||||
Howto_coreshell
|
||||
Howto_drude
|
||||
Howto_drude2
|
||||
Howto_manifold
|
||||
Howto_spins
|
||||
|
||||
END_RST -->
|
||||
|
||||
|
||||
<!-- HTML_ONLY -->
|
||||
|
||||
"Finite-size spherical and aspherical particles"_Howto_spherical.html
|
||||
"Granular models"_Howto_granular.html
|
||||
"Body style particles"_Howto_body.html
|
||||
"Polarizable models"_Howto_polarizable.html
|
||||
"Adiabatic core/shell model"_Howto_coreshell.html
|
||||
"Drude induced dipoles"_Howto_drude.html
|
||||
"Drude induced dipoles (extended)"_Howto_drude2.html
|
||||
"Manifolds (surfaces)"_Howto_manifold.html
|
||||
"Magnetic spins"_Howto_spins.html :all(b)
|
||||
|
||||
<!-- END_HTML_ONLY -->
|
||||
48
doc/src/Howto_2d.txt
Normal file
@ -0,0 +1,48 @@
|
||||
"Higher level section"_Howto.html - "LAMMPS WWW Site"_lws - "LAMMPS
|
||||
Documentation"_ld - "LAMMPS Commands"_lc :c
|
||||
|
||||
:link(lws,http://lammps.sandia.gov)
|
||||
:link(ld,Manual.html)
|
||||
:link(lc,Commands_all.html)
|
||||
|
||||
:line
|
||||
|
||||
2d simulations :h3
|
||||
|
||||
Use the "dimension"_dimension.html command to specify a 2d simulation.
|
||||
|
||||
Make the simulation box periodic in z via the "boundary"_boundary.html
|
||||
command. This is the default.
|
||||
|
||||
If using the "create box"_create_box.html command to define a
|
||||
simulation box, set the z dimensions narrow, but finite, so that the
|
||||
create_atoms command will tile the 3d simulation box with a single z
|
||||
plane of atoms - e.g.
|
||||
|
||||
"create box"_create_box.html 1 -10 10 -10 10 -0.25 0.25 :pre
|
||||
|
||||
If using the "read data"_read_data.html command to read in a file of
|
||||
atom coordinates, set the "zlo zhi" values to be finite but narrow,
|
||||
similar to the create_box command settings just described. For each
|
||||
atom in the file, assign a z coordinate so it falls inside the
|
||||
z-boundaries of the box - e.g. 0.0.
|
||||
|
||||
Use the "fix enforce2d"_fix_enforce2d.html command as the last
|
||||
defined fix to insure that the z-components of velocities and forces
|
||||
are zeroed out every timestep. The reason to make it the last fix is
|
||||
so that any forces induced by other fixes will be zeroed out.
|
||||
|
||||
Many of the example input scripts included in the LAMMPS distribution
|
||||
are for 2d models.
|
||||
|
||||
NOTE: Some models in LAMMPS treat particles as finite-size spheres, as
|
||||
opposed to point particles. See the "atom_style
|
||||
sphere"_atom_style.html and "fix nve/sphere"_fix_nve_sphere.html
|
||||
commands for details. By default, for 2d simulations, such particles
|
||||
will still be modeled as 3d spheres, not 2d discs (circles), meaning
|
||||
their moment of inertia will be that of a sphere. If you wish to
|
||||
model them as 2d discs, see the "set density/disc"_set.html command
|
||||
and the {disc} option for the "fix nve/sphere"_fix_nve_sphere.html,
|
||||
"fix nvt/sphere"_fix_nvt_sphere.html, "fix
|
||||
nph/sphere"_fix_nph_sphere.html, "fix npt/sphere"_fix_npt_sphere.html
|
||||
commands.
|
||||
75
doc/src/Howto_barostat.txt
Normal file
@ -0,0 +1,75 @@
|
||||
"Higher level section"_Howto.html - "LAMMPS WWW Site"_lws - "LAMMPS
|
||||
Documentation"_ld - "LAMMPS Commands"_lc :c
|
||||
|
||||
:link(lws,http://lammps.sandia.gov)
|
||||
:link(ld,Manual.html)
|
||||
:link(lc,Commands_all.html)
|
||||
|
||||
:line
|
||||
|
||||
Barostats :h3
|
||||
|
||||
Barostatting means controlling the pressure in an MD simulation.
|
||||
"Thermostatting"_Howto_thermostat.html means controlling the
|
||||
temperature of the particles. Since the pressure includes a kinetic
|
||||
component due to particle velocities, both these operations require
|
||||
calculation of the temperature. Typically a target temperature (T)
|
||||
and/or pressure (P) is specified by the user, and the thermostat or
|
||||
barostat attempts to equilibrate the system to the requested T and/or
|
||||
P.
|
||||
|
||||
Barostatting in LAMMPS is performed by "fixes"_fix.html. Two
|
||||
barosttating methods are currently available: Nose-Hoover (npt and
|
||||
nph) and Berendsen:
|
||||
|
||||
"fix npt"_fix_nh.html
|
||||
"fix npt/sphere"_fix_npt_sphere.html
|
||||
"fix npt/asphere"_fix_npt_asphere.html
|
||||
"fix nph"_fix_nh.html
|
||||
"fix press/berendsen"_fix_press_berendsen.html :ul
|
||||
|
||||
The "fix npt"_fix_nh.html commands include a Nose-Hoover thermostat
|
||||
and barostat. "Fix nph"_fix_nh.html is just a Nose/Hoover barostat;
|
||||
it does no thermostatting. Both "fix nph"_fix_nh.html and "fix
|
||||
press/berendsen"_fix_press_berendsen.html can be used in conjunction
|
||||
with any of the thermostatting fixes.
|
||||
|
||||
As with the "thermostats"_Howto_thermostat.html, "fix npt"_fix_nh.html
|
||||
and "fix nph"_fix_nh.html only use translational motion of the
|
||||
particles in computing T and P and performing thermo/barostatting.
|
||||
"Fix npt/sphere"_fix_npt_sphere.html and "fix
|
||||
npt/asphere"_fix_npt_asphere.html thermo/barostat using not only
|
||||
translation velocities but also rotational velocities for spherical
|
||||
and aspherical particles.
|
||||
|
||||
All of the barostatting fixes use the "compute
|
||||
pressure"_compute_pressure.html compute to calculate a current
|
||||
pressure. By default, this compute is created with a simple "compute
|
||||
temp"_compute_temp.html (see the last argument of the "compute
|
||||
pressure"_compute_pressure.html command), which is used to calculated
|
||||
the kinetic component of the pressure. The barostatting fixes can
|
||||
also use temperature computes that remove bias for the purpose of
|
||||
computing the kinetic component which contributes to the current
|
||||
pressure. See the doc pages for the individual fixes and for the
|
||||
"fix_modify"_fix_modify.html command for instructions on how to assign
|
||||
a temperature or pressure compute to a barostatting fix.
|
||||
|
||||
NOTE: As with the thermostats, the Nose/Hoover methods ("fix
|
||||
npt"_fix_nh.html and "fix nph"_fix_nh.html) perform time integration.
|
||||
"Fix press/berendsen"_fix_press_berendsen.html does NOT, so it should
|
||||
be used with one of the constant NVE fixes or with one of the NVT
|
||||
fixes.
|
||||
|
||||
Thermodynamic output, which can be setup via the
|
||||
"thermo_style"_thermo_style.html command, often includes pressure
|
||||
values. As explained on the doc page for the
|
||||
"thermo_style"_thermo_style.html command, the default pressure is
|
||||
setup by the thermo command itself. It is NOT the pressure associated
|
||||
with any barostatting fix you have defined or with any compute you
|
||||
have defined that calculates a pressure. The doc pages for the
|
||||
barostatting fixes explain the ID of the pressure compute they create.
|
||||
Thus if you want to view these pressures, you need to specify them
|
||||
explicitly via the "thermo_style custom"_thermo_style.html command.
|
||||
Or you can use the "thermo_modify"_thermo_modify.html command to
|
||||
re-define what pressure compute is used for default thermodynamic
|
||||
output.
|
||||
3
doc/src/tutorial_bash_on_windows.txt → doc/src/Howto_bash.txt
Normal file → Executable file
@ -2,7 +2,7 @@
|
||||
|
||||
:link(lws,http://lammps.sandia.gov)
|
||||
:link(ld,Manual.html)
|
||||
:link(lc,Section_commands.html#comm)
|
||||
:link(lc,Commands_all.html)
|
||||
|
||||
:line
|
||||
|
||||
@ -10,6 +10,7 @@ Using LAMMPS with Bash on Windows :h3
|
||||
[written by Richard Berger]
|
||||
|
||||
:line
|
||||
|
||||
Starting with Windows 10 you can install Linux tools directly in Windows. This
|
||||
allows you to compile LAMMPS following the same procedure as on a real Ubuntu
|
||||
Linux installation. Software can be easily installed using the package manager
|
||||
105
doc/src/Howto_bioFF.txt
Normal file
@ -0,0 +1,105 @@
|
||||
"Higher level section"_Howto.html - "LAMMPS WWW Site"_lws - "LAMMPS
|
||||
Documentation"_ld - "LAMMPS Commands"_lc :c
|
||||
|
||||
:link(lws,http://lammps.sandia.gov)
|
||||
:link(ld,Manual.html)
|
||||
:link(lc,Commands_all.html)
|
||||
|
||||
:line
|
||||
|
||||
CHARMM, AMBER, and DREIDING force fields :h3
|
||||
|
||||
A force field has 2 parts: the formulas that define it and the
|
||||
coefficients used for a particular system. Here we only discuss
|
||||
formulas implemented in LAMMPS that correspond to formulas commonly
|
||||
used in the CHARMM, AMBER, and DREIDING force fields. Setting
|
||||
coefficients is done in the input data file via the
|
||||
"read_data"_read_data.html command or in the input script with
|
||||
commands like "pair_coeff"_pair_coeff.html or
|
||||
"bond_coeff"_bond_coeff.html. See the "Tools"_Tools.html doc page for
|
||||
additional tools that can use CHARMM or AMBER to assign force field
|
||||
coefficients and convert their output into LAMMPS input.
|
||||
|
||||
See "(MacKerell)"_#howto-MacKerell for a description of the CHARMM force
|
||||
field. See "(Cornell)"_#howto-Cornell for a description of the AMBER force
|
||||
field.
|
||||
|
||||
:link(charmm,http://www.scripps.edu/brooks)
|
||||
:link(amber,http://amber.scripps.edu)
|
||||
|
||||
These style choices compute force field formulas that are consistent
|
||||
with common options in CHARMM or AMBER. See each command's
|
||||
documentation for the formula it computes.
|
||||
|
||||
"bond_style"_bond_harmonic.html harmonic
|
||||
"angle_style"_angle_charmm.html charmm
|
||||
"dihedral_style"_dihedral_charmm.html charmmfsh
|
||||
"dihedral_style"_dihedral_charmm.html charmm
|
||||
"pair_style"_pair_charmm.html lj/charmmfsw/coul/charmmfsh
|
||||
"pair_style"_pair_charmm.html lj/charmmfsw/coul/long
|
||||
"pair_style"_pair_charmm.html lj/charmm/coul/charmm
|
||||
"pair_style"_pair_charmm.html lj/charmm/coul/charmm/implicit
|
||||
"pair_style"_pair_charmm.html lj/charmm/coul/long :ul
|
||||
|
||||
"special_bonds"_special_bonds.html charmm
|
||||
"special_bonds"_special_bonds.html amber :ul
|
||||
|
||||
NOTE: For CHARMM, newer {charmmfsw} or {charmmfsh} styles were
|
||||
released in March 2017. We recommend they be used instead of the
|
||||
older {charmm} styles. See discussion of the differences on the "pair
|
||||
charmm"_pair_charmm.html and "dihedral charmm"_dihedral_charmm.html
|
||||
doc pages.
|
||||
|
||||
DREIDING is a generic force field developed by the "Goddard
|
||||
group"_http://www.wag.caltech.edu at Caltech and is useful for
|
||||
predicting structures and dynamics of organic, biological and
|
||||
main-group inorganic molecules. The philosophy in DREIDING is to use
|
||||
general force constants and geometry parameters based on simple
|
||||
hybridization considerations, rather than individual force constants
|
||||
and geometric parameters that depend on the particular combinations of
|
||||
atoms involved in the bond, angle, or torsion terms. DREIDING has an
|
||||
"explicit hydrogen bond term"_pair_hbond_dreiding.html to describe
|
||||
interactions involving a hydrogen atom on very electronegative atoms
|
||||
(N, O, F).
|
||||
|
||||
See "(Mayo)"_#howto-Mayo for a description of the DREIDING force field
|
||||
|
||||
These style choices compute force field formulas that are consistent
|
||||
with the DREIDING force field. See each command's
|
||||
documentation for the formula it computes.
|
||||
|
||||
"bond_style"_bond_harmonic.html harmonic
|
||||
"bond_style"_bond_morse.html morse :ul
|
||||
|
||||
"angle_style"_angle_harmonic.html harmonic
|
||||
"angle_style"_angle_cosine.html cosine
|
||||
"angle_style"_angle_cosine_periodic.html cosine/periodic :ul
|
||||
|
||||
"dihedral_style"_dihedral_charmm.html charmm
|
||||
"improper_style"_improper_umbrella.html umbrella :ul
|
||||
|
||||
"pair_style"_pair_buck.html buck
|
||||
"pair_style"_pair_buck.html buck/coul/cut
|
||||
"pair_style"_pair_buck.html buck/coul/long
|
||||
"pair_style"_pair_lj.html lj/cut
|
||||
"pair_style"_pair_lj.html lj/cut/coul/cut
|
||||
"pair_style"_pair_lj.html lj/cut/coul/long :ul
|
||||
|
||||
"pair_style"_pair_hbond_dreiding.html hbond/dreiding/lj
|
||||
"pair_style"_pair_hbond_dreiding.html hbond/dreiding/morse :ul
|
||||
|
||||
"special_bonds"_special_bonds.html dreiding :ul
|
||||
|
||||
:line
|
||||
|
||||
:link(howto-MacKerell)
|
||||
[(MacKerell)] MacKerell, Bashford, Bellott, Dunbrack, Evanseck, Field,
|
||||
Fischer, Gao, Guo, Ha, et al, J Phys Chem, 102, 3586 (1998).
|
||||
|
||||
:link(howto-Cornell)
|
||||
[(Cornell)] Cornell, Cieplak, Bayly, Gould, Merz, Ferguson,
|
||||
Spellmeyer, Fox, Caldwell, Kollman, JACS 117, 5179-5197 (1995).
|
||||
|
||||
:link(howto-Mayo)
|
||||
[(Mayo)] Mayo, Olfason, Goddard III, J Phys Chem, 94, 8897-8909
|
||||
(1990).
|
||||
@ -1,24 +1,24 @@
|
||||
"LAMMPS WWW Site"_lws - "LAMMPS Documentation"_ld - "LAMMPS Commands"_lc :c
|
||||
"Higher level section"_Howto.html - "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)
|
||||
:link(lc,Commands_all.html)
|
||||
|
||||
:line
|
||||
|
||||
Body particles :h2
|
||||
Body particles :h3
|
||||
|
||||
[Overview:]
|
||||
|
||||
This doc page is not about a LAMMPS input script command, but about
|
||||
body particles, which are generalized finite-size particles.
|
||||
In LAMMPS, body particles are generalized finite-size particles.
|
||||
Individual body particles can represent complex entities, such as
|
||||
surface meshes of discrete points, collections of sub-particles,
|
||||
deformable objects, etc. Note that other kinds of finite-size
|
||||
spherical and aspherical particles are also supported by LAMMPS, such
|
||||
as spheres, ellipsoids, line segments, and triangles, but they are
|
||||
simpler entities that body particles. See "Section
|
||||
6.14"_Section_howto.html#howto_14 for a general overview of all
|
||||
simpler entities that body particles. See the "Howto
|
||||
spherical"_Howto_spherical.html doc page for a general overview of all
|
||||
these particle types.
|
||||
|
||||
Body particles are used via the "atom_style body"_atom_style.html
|
||||
@ -27,19 +27,17 @@ styles supported by LAMMPS are as follows. The name in the first
|
||||
column is used as the {bstyle} argument for the "atom_style
|
||||
body"_atom_style.html command.
|
||||
|
||||
{nparticle} | rigid body with N sub-particles |
|
||||
{rounded/polygon} | 2d convex polygon with N vertices :tb(c=2,s=|)
|
||||
{nparticle} : rigid body with N sub-particles
|
||||
{rounded/polygon} : 2d polygons with N vertices
|
||||
{rounded/polyhedron} : 3d polyhedra with N vertices, E edges and F faces :tb(s=:)
|
||||
|
||||
The body style determines what attributes are stored for each body and
|
||||
thus how they can be used to compute pairwise body/body or
|
||||
bond/non-body (point particle) interactions. More details of each
|
||||
style are described below.
|
||||
|
||||
NOTE: The rounded/polygon style listed in the table above and
|
||||
described below has not yet been relesed in LAMMPS. It will be soon.
|
||||
|
||||
We hope to add more styles in the future. See "Section
|
||||
10.12"_Section_modify.html#mod_12 for details on how to add a new body
|
||||
More styles may be added in the future. See the "Modify
|
||||
body"_Modify_body.html doc page for details on how to add a new body
|
||||
style to the code.
|
||||
|
||||
:line
|
||||
@ -61,7 +59,7 @@ the simple particles.
|
||||
By contrast, when body particles are used, LAMMPS treats an entire
|
||||
body as a single particle for purposes of computing pairwise
|
||||
interactions, building neighbor lists, migrating particles between
|
||||
processors, outputting particles to a dump file, etc. This means that
|
||||
processors, output of particles to a dump file, etc. This means that
|
||||
interactions between pairs of bodies or between a body and non-body
|
||||
(point) particle need to be encoded in an appropriate pair style. If
|
||||
such a pair style were to mimic the "fix rigid"_fix_rigid.html model,
|
||||
@ -72,17 +70,20 @@ single body/body interaction was computed.
|
||||
Thus it only makes sense to use body particles and develop such a pair
|
||||
style, when particle/particle interactions are more complex than what
|
||||
the "fix rigid"_fix_rigid.html command can already calculate. For
|
||||
example, if particles have one or more of the following attributes:
|
||||
example, consider particles with one or more of the following
|
||||
attributes:
|
||||
|
||||
represented by a surface mesh
|
||||
represented by a collection of geometric entities (e.g. planes + spheres)
|
||||
deformable
|
||||
internal stress that induces fragmentation :ul
|
||||
|
||||
then the interaction between pairs of particles is likely to be more
|
||||
complex than the summation of simple sub-particle interactions. An
|
||||
example is contact or frictional forces between particles with planar
|
||||
surfaces that inter-penetrate.
|
||||
For these models, the interaction between pairs of particles is likely
|
||||
to be more complex than the summation of simple pairwise interactions.
|
||||
An example is contact or frictional forces between particles with
|
||||
planar surfaces that inter-penetrate. Likewise, the body particle may
|
||||
store internal state, such as a stress tensor used to compute a
|
||||
fracture criterion.
|
||||
|
||||
These are additional LAMMPS commands that can be used with body
|
||||
particles of different styles
|
||||
@ -130,7 +131,9 @@ x1 y1 z1
|
||||
...
|
||||
xN yN zN :pre
|
||||
|
||||
N is the number of sub-particles in the body particle. M = 6 + 3*N.
|
||||
where M = 6 + 3*N, and N is the number of sub-particles in the body
|
||||
particle.
|
||||
|
||||
The integer line has a single value N. The floating point line(s)
|
||||
list 6 moments of inertia followed by the coordinates of the N
|
||||
sub-particles (x1 to zN) as 3N values. These values can be listed on
|
||||
@ -148,8 +151,8 @@ center-of-mass position of the particle is specified by the x,y,z
|
||||
values in the {Atoms} section of the data file, as is the total mass
|
||||
of the body particle.
|
||||
|
||||
The "pair_style body"_pair_body.html command can be used with this
|
||||
body style to compute body/body and body/non-body interactions.
|
||||
The "pair_style body/nparticle"_pair_body_nparticle.html command can be used
|
||||
with this body style to compute body/body and body/non-body interactions.
|
||||
|
||||
For output purposes via the "compute
|
||||
body/local"_compute_body_local.html and "dump local"_dump.html
|
||||
@ -175,15 +178,18 @@ The {bflag2} argument is ignored.
|
||||
|
||||
[Specifics of body style rounded/polygon:]
|
||||
|
||||
NOTE: Aug 2016 - This body style has not yet been added to LAMMPS.
|
||||
The info below is a placeholder.
|
||||
The {rounded/polygon} body style represents body particles as a 2d
|
||||
polygon with a variable number of N vertices. This style can only be
|
||||
used for 2d models; see the "boundary"_boundary.html command. See the
|
||||
"pair_style body/rounded/polygon" doc page for a diagram of two
|
||||
squares with rounded circles at the vertices. Special cases for N = 1
|
||||
(circle) and N = 2 (rod with rounded ends) can also be specified.
|
||||
|
||||
The {rounded/polygon} body style represents body particles as a convex
|
||||
polygon with a variable number N > 2 of vertices, which can only be
|
||||
used for 2d models. One example use of this body style is for 2d
|
||||
discrete element models, as described in "Fraige"_#Fraige. Similar to
|
||||
body style {nparticle}, the atom_style body command for this body
|
||||
style takes two additional arguments:
|
||||
One use of this body style is for 2d discrete element models, as
|
||||
described in "Fraige"_#body-Fraige.
|
||||
|
||||
Similar to body style {nparticle}, the atom_style body command for
|
||||
this body style takes two additional arguments:
|
||||
|
||||
atom_style body rounded/polygon Nmin Nmax
|
||||
Nmin = minimum # of vertices in any body in the system
|
||||
@ -203,17 +209,20 @@ x1 y1 z1
|
||||
...
|
||||
xN yN zN
|
||||
i j j k k ...
|
||||
radius :pre
|
||||
diameter :pre
|
||||
|
||||
N is the number of vertices in the body particle. M = 6 + 3*N + 2*N +
|
||||
1. The integer line has a single value N. The floating point line(s)
|
||||
where M = 6 + 3*N + 2*N + 1, and N is the number of vertices in the
|
||||
body particle.
|
||||
|
||||
The integer line has a single value N. The floating point line(s)
|
||||
list 6 moments of inertia followed by the coordinates of the N
|
||||
vertices (x1 to zN) as 3N values, followed by 2N vertex indices
|
||||
corresponding to the end points of the N edges, followed by a single
|
||||
radius value = the smallest circle encompassing the polygon. That
|
||||
last value is used to facilitate the body/body contact detection.
|
||||
These floating-point values can be listed on as many lines as you
|
||||
wish; see the "read_data"_read_data.html command for more details.
|
||||
vertices (x1 to zN) as 3N values (with z = 0.0 for each), followed by
|
||||
2N vertex indices corresponding to the end points of the N edges,
|
||||
followed by a single diameter value = the rounded diameter of the
|
||||
circle that surrounds each vertex. The diameter value can be different
|
||||
for each body particle. These floating-point values can be listed on
|
||||
as many lines as you wish; see the "read_data"_read_data.html command
|
||||
for more details.
|
||||
|
||||
The 6 moments of inertia (ixx,iyy,izz,ixy,ixz,iyz) should be the
|
||||
values consistent with the current orientation of the rigid body
|
||||
@ -225,8 +234,11 @@ from the center-of-mass of the body particle. The center-of-mass
|
||||
position of the particle is specified by the x,y,z values in the
|
||||
{Atoms} section of the data file.
|
||||
|
||||
For example, the following information would specify a square
|
||||
particles whose edge length is sqrt(2):
|
||||
For example, the following information would specify a square particle
|
||||
whose edge length is sqrt(2) and rounded diameter is 1.0. The
|
||||
orientation of the square is aligned with the xy coordinate axes which
|
||||
is consistent with the 6 moments of inertia: ixx iyy izz ixy ixz iyz =
|
||||
1 1 4 0 0 0. Note that only Izz matters in 2D simulations.
|
||||
|
||||
3 1 27
|
||||
4
|
||||
@ -235,12 +247,178 @@ particles whose edge length is sqrt(2):
|
||||
-0.7071 0.7071 0
|
||||
0.7071 0.7071 0
|
||||
0.7071 -0.7071 0
|
||||
0 1 1 2 2 3 3 0
|
||||
0 1
|
||||
1 2
|
||||
2 3
|
||||
3 0
|
||||
1.0 :pre
|
||||
|
||||
A rod in 2D, whose length is 4.0, mass 1.0, rounded at two ends
|
||||
by circles of diameter 0.5, is specified as follows:
|
||||
|
||||
1 1 13
|
||||
2
|
||||
1 1 1.33333 0 0 0
|
||||
-2 0 0
|
||||
2 0 0
|
||||
0.5 :pre
|
||||
|
||||
A disk, whose diameter is 3.0, mass 1.0, is specified as follows:
|
||||
|
||||
1 1 10
|
||||
1
|
||||
1 1 4.5 0 0 0
|
||||
0 0 0
|
||||
3.0 :pre
|
||||
|
||||
The "pair_style body/rounded/polygon"_pair_body_rounded_polygon.html
|
||||
command can be used with this body style to compute body/body
|
||||
interactions.
|
||||
interactions. The "fix wall/body/polygon"_fix_wall_body_polygon.html
|
||||
command can be used with this body style to compute the interaction of
|
||||
body particles with a wall.
|
||||
|
||||
:line
|
||||
|
||||
[Specifics of body style rounded/polyhedron:]
|
||||
|
||||
The {rounded/polyhedron} body style represents body particles as a 3d
|
||||
polyhedron with a variable number of N vertices, E edges and F faces.
|
||||
This style can only be used for 3d models; see the
|
||||
"boundary"_boundary.html command. See the "pair_style
|
||||
body/rounded/polygon" doc page for a diagram of a two 2d squares with
|
||||
rounded circles at the vertices. A 3d cube with rounded spheres at
|
||||
the 8 vertices and 12 rounded edges would be similar. Special cases
|
||||
for N = 1 (sphere) and N = 2 (rod with rounded ends) can also be
|
||||
specified.
|
||||
|
||||
This body style is for 3d discrete element models, as described in
|
||||
"Wang"_#body-Wang.
|
||||
|
||||
Similar to body style {rounded/polygon}, the atom_style body command
|
||||
for this body style takes two additional arguments:
|
||||
|
||||
atom_style body rounded/polyhedron Nmin Nmax
|
||||
Nmin = minimum # of vertices in any body in the system
|
||||
Nmax = maximum # of vertices in any body in the system :pre
|
||||
|
||||
The Nmin and Nmax arguments are used to bound the size of data
|
||||
structures used internally by each particle.
|
||||
|
||||
When the "read_data"_read_data.html command reads a data file for this
|
||||
body style, the following information must be provided for each entry
|
||||
in the {Bodies} section of the data file:
|
||||
|
||||
atom-ID 3 M
|
||||
N E F
|
||||
ixx iyy izz ixy ixz iyz
|
||||
x1 y1 z1
|
||||
...
|
||||
xN yN zN
|
||||
0 1
|
||||
1 2
|
||||
2 3
|
||||
...
|
||||
0 1 2 -1
|
||||
0 2 3 -1
|
||||
...
|
||||
1 2 3 4
|
||||
diameter :pre
|
||||
|
||||
where M = 6 + 3*N + 2*E + 4*F + 1, and N is the number of vertices in
|
||||
the body particle, E = number of edges, F = number of faces.
|
||||
|
||||
The integer line has three values: number of vertices (N), number of
|
||||
edges (E) and number of faces (F). The floating point line(s) list 6
|
||||
moments of inertia followed by the coordinates of the N vertices (x1
|
||||
to zN) as 3N values, followed by 2N vertex indices corresponding to
|
||||
the end points of the E edges, then 4*F vertex indices defining F
|
||||
faces. The last value is the diameter value = the rounded diameter of
|
||||
the sphere that surrounds each vertex. The diameter value can be
|
||||
different for each body particle. These floating-point values can be
|
||||
listed on as many lines as you wish; see the
|
||||
"read_data"_read_data.html command for more details. Because the
|
||||
maximum number of vertices per face is hard-coded to be 4
|
||||
(i.e. quadrilaterals), faces with more than 4 vertices need to be
|
||||
split into triangles or quadrilaterals. For triangular faces, the
|
||||
last vertex index should be set to -1.
|
||||
|
||||
The ordering of the 4 vertices within a face should follow
|
||||
the right-hand rule so that the normal vector of the face points
|
||||
outwards from the center of mass.
|
||||
|
||||
The 6 moments of inertia (ixx,iyy,izz,ixy,ixz,iyz) should be the
|
||||
values consistent with the current orientation of the rigid body
|
||||
around its center of mass. The values are with respect to the
|
||||
simulation box XYZ axes, not with respect to the principal axes of the
|
||||
rigid body itself. LAMMPS performs the latter calculation internally.
|
||||
The coordinates of each vertex are specified as its x,y,z displacement
|
||||
from the center-of-mass of the body particle. The center-of-mass
|
||||
position of the particle is specified by the x,y,z values in the
|
||||
{Atoms} section of the data file.
|
||||
|
||||
For example, the following information would specify a cubic particle
|
||||
whose edge length is 2.0 and rounded diameter is 0.5.
|
||||
The orientation of the cube is aligned with the xyz coordinate axes
|
||||
which is consistent with the 6 moments of inertia: ixx iyy izz ixy ixz
|
||||
iyz = 0.667 0.667 0.667 0 0 0.
|
||||
|
||||
1 3 79
|
||||
8 12 6
|
||||
0.667 0.667 0.667 0 0 0
|
||||
1 1 1
|
||||
1 -1 1
|
||||
-1 -1 1
|
||||
-1 1 1
|
||||
1 1 -1
|
||||
1 -1 -1
|
||||
-1 -1 -1
|
||||
-1 1 -1
|
||||
0 1
|
||||
1 2
|
||||
2 3
|
||||
3 0
|
||||
4 5
|
||||
5 6
|
||||
6 7
|
||||
7 4
|
||||
0 4
|
||||
1 5
|
||||
2 6
|
||||
3 7
|
||||
0 1 2 3
|
||||
4 5 6 7
|
||||
0 1 5 4
|
||||
1 2 6 5
|
||||
2 3 7 6
|
||||
3 0 4 7
|
||||
0.5 :pre
|
||||
|
||||
A rod in 3D, whose length is 4.0, mass 1.0 and rounded at two ends
|
||||
by circles of diameter 0.5, is specified as follows:
|
||||
|
||||
1 1 13
|
||||
2
|
||||
0 1.33333 1.33333 0 0 0
|
||||
-2 0 0
|
||||
2 0 0
|
||||
0.5 :pre
|
||||
|
||||
A sphere whose diameter is 3.0 and mass 1.0, is specified as follows:
|
||||
|
||||
1 1 10
|
||||
1
|
||||
0.9 0.9 0.9 0 0 0
|
||||
0 0 0
|
||||
3.0 :pre
|
||||
|
||||
The "pair_style
|
||||
body/rounded/polhedron"_pair_body_rounded_polyhedron.html command can
|
||||
be used with this body style to compute body/body interactions. The
|
||||
"fix wall/body/polyhedron"_fix_wall_body_polygon.html command can be
|
||||
used with this body style to compute the interaction of body particles
|
||||
with a wall.
|
||||
|
||||
:line
|
||||
|
||||
For output purposes via the "compute
|
||||
body/local"_compute_body_local.html and "dump local"_dump.html
|
||||
@ -257,10 +435,10 @@ the body particle itself. These values are calculated using the
|
||||
current COM and orientation of the body particle.
|
||||
|
||||
For images created by the "dump image"_dump_image.html command, if the
|
||||
{body} keyword is set, then each body particle is drawn as a convex
|
||||
polygon consisting of N line segments. Note that the line segments
|
||||
are drawn between the N vertices, which does not correspond exactly to
|
||||
the physical extent of the body (because the "pair_style
|
||||
{body} keyword is set, then each body particle is drawn as a polygon
|
||||
consisting of N line segments. Note that the line segments are drawn
|
||||
between the N vertices, which does not correspond exactly to the
|
||||
physical extent of the body (because the "pair_style
|
||||
rounded/polygon"_pair_body_rounded_polygon.html defines finite-size
|
||||
spheres at those point and the line segments between the spheres are
|
||||
tangent to the spheres). The drawn diameter of each line segment is
|
||||
@ -269,6 +447,10 @@ determined by the {bflag1} parameter for the {body} keyword. The
|
||||
|
||||
:line
|
||||
|
||||
:link(Fraige)
|
||||
:link(body-Fraige)
|
||||
[(Fraige)] F. Y. Fraige, P. A. Langston, A. J. Matchett, J. Dodds,
|
||||
Particuology, 6, 455 (2008).
|
||||
|
||||
:link(body-Wang)
|
||||
[(Wang)] J. Wang, H. S. Yu, P. A. Langston, F. Y. Fraige, Granular
|
||||
Matter, 13, 1 (2011).
|
||||
195
doc/src/Howto_chunk.txt
Normal file
@ -0,0 +1,195 @@
|
||||
"Higher level section"_Howto.html - "LAMMPS WWW Site"_lws - "LAMMPS
|
||||
Documentation"_ld - "LAMMPS Commands"_lc :c
|
||||
|
||||
:link(lws,http://lammps.sandia.gov)
|
||||
:link(ld,Manual.html)
|
||||
:link(lc,Commands_all.html)
|
||||
|
||||
:line
|
||||
|
||||
Use chunks to calculate system properties :h3
|
||||
|
||||
In LAMMS, "chunks" are collections of atoms, as defined by the
|
||||
"compute chunk/atom"_compute_chunk_atom.html command, which assigns
|
||||
each atom to a chunk ID (or to no chunk at all). The number of chunks
|
||||
and the assignment of chunk IDs to atoms can be static or change over
|
||||
time. Examples of "chunks" are molecules or spatial bins or atoms
|
||||
with similar values (e.g. coordination number or potential energy).
|
||||
|
||||
The per-atom chunk IDs can be used as input to two other kinds of
|
||||
commands, to calculate various properties of a system:
|
||||
|
||||
"fix ave/chunk"_fix_ave_chunk.html
|
||||
any of the "compute */chunk"_compute.html commands :ul
|
||||
|
||||
Here, each of the 4 kinds of chunk-related commands is briefly
|
||||
overviewed. Then some examples are given of how to compute different
|
||||
properties with chunk commands.
|
||||
|
||||
Compute chunk/atom command: :h4
|
||||
|
||||
This compute can assign atoms to chunks of various styles. Only atoms
|
||||
in the specified group and optional specified region are assigned to a
|
||||
chunk. Here are some possible chunk definitions:
|
||||
|
||||
atoms in same molecule | chunk ID = molecule ID |
|
||||
atoms of same atom type | chunk ID = atom type |
|
||||
all atoms with same atom property (charge, radius, etc) | chunk ID = output of compute property/atom |
|
||||
atoms in same cluster | chunk ID = output of "compute cluster/atom"_compute_cluster_atom.html command |
|
||||
atoms in same spatial bin | chunk ID = bin ID |
|
||||
atoms in same rigid body | chunk ID = molecule ID used to define rigid bodies |
|
||||
atoms with similar potential energy | chunk ID = output of "compute pe/atom"_compute_pe_atom.html |
|
||||
atoms with same local defect structure | chunk ID = output of "compute centro/atom"_compute_centro_atom.html or "compute coord/atom"_compute_coord_atom.html command :tb(s=|,c=2)
|
||||
|
||||
Note that chunk IDs are integer values, so for atom properties or
|
||||
computes that produce a floating point value, they will be truncated
|
||||
to an integer. You could also use the compute in a variable that
|
||||
scales the floating point value to spread it across multiple integers.
|
||||
|
||||
Spatial bins can be of various kinds, e.g. 1d bins = slabs, 2d bins =
|
||||
pencils, 3d bins = boxes, spherical bins, cylindrical bins.
|
||||
|
||||
This compute also calculates the number of chunks {Nchunk}, which is
|
||||
used by other commands to tally per-chunk data. {Nchunk} can be a
|
||||
static value or change over time (e.g. the number of clusters). The
|
||||
chunk ID for an individual atom can also be static (e.g. a molecule
|
||||
ID), or dynamic (e.g. what spatial bin an atom is in as it moves).
|
||||
|
||||
Note that this compute allows the per-atom output of other
|
||||
"computes"_compute.html, "fixes"_fix.html, and
|
||||
"variables"_variable.html to be used to define chunk IDs for each
|
||||
atom. This means you can write your own compute or fix to output a
|
||||
per-atom quantity to use as chunk ID. See the "Modify"_Modify.html
|
||||
doc pages for info on how to do this. You can also define a "per-atom
|
||||
variable"_variable.html in the input script that uses a formula to
|
||||
generate a chunk ID for each atom.
|
||||
|
||||
Fix ave/chunk command: :h4
|
||||
|
||||
This fix takes the ID of a "compute
|
||||
chunk/atom"_compute_chunk_atom.html command as input. For each chunk,
|
||||
it then sums one or more specified per-atom values over the atoms in
|
||||
each chunk. The per-atom values can be any atom property, such as
|
||||
velocity, force, charge, potential energy, kinetic energy, stress,
|
||||
etc. Additional keywords are defined for per-chunk properties like
|
||||
density and temperature. More generally any per-atom value generated
|
||||
by other "computes"_compute.html, "fixes"_fix.html, and "per-atom
|
||||
variables"_variable.html, can be summed over atoms in each chunk.
|
||||
|
||||
Similar to other averaging fixes, this fix allows the summed per-chunk
|
||||
values to be time-averaged in various ways, and output to a file. The
|
||||
fix produces a global array as output with one row of values per
|
||||
chunk.
|
||||
|
||||
Compute */chunk commands: :h4
|
||||
|
||||
The following computes operate on chunks of atoms to produce per-chunk
|
||||
values. Any compute whose style name ends in "/chunk" is in this
|
||||
category:
|
||||
|
||||
"compute com/chunk"_compute_com_chunk.html
|
||||
"compute gyration/chunk"_compute_gyration_chunk.html
|
||||
"compute inertia/chunk"_compute_inertia_chunk.html
|
||||
"compute msd/chunk"_compute_msd_chunk.html
|
||||
"compute property/chunk"_compute_property_chunk.html
|
||||
"compute temp/chunk"_compute_temp_chunk.html
|
||||
"compute torque/chunk"_compute_vcm_chunk.html
|
||||
"compute vcm/chunk"_compute_vcm_chunk.html :ul
|
||||
|
||||
They each take the ID of a "compute
|
||||
chunk/atom"_compute_chunk_atom.html command as input. As their names
|
||||
indicate, they calculate the center-of-mass, radius of gyration,
|
||||
moments of inertia, mean-squared displacement, temperature, torque,
|
||||
and velocity of center-of-mass for each chunk of atoms. The "compute
|
||||
property/chunk"_compute_property_chunk.html command can tally the
|
||||
count of atoms in each chunk and extract other per-chunk properties.
|
||||
|
||||
The reason these various calculations are not part of the "fix
|
||||
ave/chunk command"_fix_ave_chunk.html, is that each requires a more
|
||||
complicated operation than simply summing and averaging over per-atom
|
||||
values in each chunk. For example, many of them require calculation
|
||||
of a center of mass, which requires summing mass*position over the
|
||||
atoms and then dividing by summed mass.
|
||||
|
||||
All of these computes produce a global vector or global array as
|
||||
output, wih one or more values per chunk. The output can be used in
|
||||
various ways:
|
||||
|
||||
As input to the "fix ave/time"_fix_ave_time.html command, which can
|
||||
write the values to a file and optionally time average them. :ulb,l
|
||||
|
||||
As input to the "fix ave/histo"_fix_ave_histo.html command to
|
||||
histogram values across chunks. E.g. a histogram of cluster sizes or
|
||||
molecule diffusion rates. :l
|
||||
|
||||
As input to special functions of "equal-style
|
||||
variables"_variable.html, like sum() and max() and ave(). E.g. to
|
||||
find the largest cluster or fastest diffusing molecule or average
|
||||
radius-of-gyration of a set of molecules (chunks). :l,ule
|
||||
|
||||
Other chunk commands: :h4
|
||||
|
||||
"compute chunk/spread/atom"_compute_chunk_spread_atom.html
|
||||
"compute reduce/chunk"_compute_reduce_chunk.html :ul
|
||||
|
||||
The "compute chunk/spread/atom"_compute_chunk_spread_atom.html command
|
||||
spreads per-chunk values to each atom in the chunk, producing per-atom
|
||||
values as its output. This can be useful for outputting per-chunk
|
||||
values to a per-atom "dump file"_dump.html. Or for using an atom's
|
||||
associated chunk value in an "atom-style variable"_variable.html.
|
||||
|
||||
The "compute reduce/chunk"_compute_reduce_chunk.html command reduces a
|
||||
peratom value across the atoms in each chunk to produce a value per
|
||||
chunk. When used with the "compute
|
||||
chunk/spread/atom"_compute_chunk_spread_atom.html command it can
|
||||
create peratom values that induce a new set of chunks with a second
|
||||
"compute chunk/atom"_compute_chunk_atom.html command.
|
||||
|
||||
Example calculations with chunks :h4
|
||||
|
||||
Here are examples using chunk commands to calculate various
|
||||
properties:
|
||||
|
||||
(1) Average velocity in each of 1000 2d spatial bins:
|
||||
|
||||
compute cc1 all chunk/atom bin/2d x 0.0 0.1 y lower 0.01 units reduced
|
||||
fix 1 all ave/chunk 100 10 1000 cc1 vx vy file tmp.out :pre
|
||||
|
||||
(2) Temperature in each spatial bin, after subtracting a flow
|
||||
velocity:
|
||||
|
||||
compute cc1 all chunk/atom bin/2d x 0.0 0.1 y lower 0.1 units reduced
|
||||
compute vbias all temp/profile 1 0 0 y 10
|
||||
fix 1 all ave/chunk 100 10 1000 cc1 temp bias vbias file tmp.out :pre
|
||||
|
||||
(3) Center of mass of each molecule:
|
||||
|
||||
compute cc1 all chunk/atom molecule
|
||||
compute myChunk all com/chunk cc1
|
||||
fix 1 all ave/time 100 1 100 c_myChunk\[*\] file tmp.out mode vector :pre
|
||||
|
||||
(4) Total force on each molecule and ave/max across all molecules:
|
||||
|
||||
compute cc1 all chunk/atom molecule
|
||||
fix 1 all ave/chunk 1000 1 1000 cc1 fx fy fz file tmp.out
|
||||
variable xave equal ave(f_1\[2\])
|
||||
variable xmax equal max(f_1\[2\])
|
||||
thermo 1000
|
||||
thermo_style custom step temp v_xave v_xmax :pre
|
||||
|
||||
(5) Histogram of cluster sizes:
|
||||
|
||||
compute cluster all cluster/atom 1.0
|
||||
compute cc1 all chunk/atom c_cluster compress yes
|
||||
compute size all property/chunk cc1 count
|
||||
fix 1 all ave/histo 100 1 100 0 20 20 c_size mode vector ave running beyond ignore file tmp.histo :pre
|
||||
|
||||
(6) An example of using a per-chunk value to apply per-atom forces to
|
||||
compress individual polymer chains (molecules) in a mixture, is
|
||||
explained on the "compute
|
||||
chunk/spread/atom"_compute_chunk_spread_atom.html command doc page.
|
||||
|
||||
(7) An example of using one set of per-chunk values for molecule
|
||||
chunks, to create a 2nd set of micelle-scale chunks (clustered
|
||||
molecules, due to hydrophobicity), is explained on the "compute
|
||||
chunk/reduce"_compute_reduce_chunk.html command doc page.
|
||||
131
doc/src/Howto_client_server.txt
Normal file
@ -0,0 +1,131 @@
|
||||
"Higher level section"_Howto.html - "LAMMPS WWW Site"_lws - "LAMMPS
|
||||
Documentation"_ld - "LAMMPS Commands"_lc :c
|
||||
|
||||
:link(lws,http://lammps.sandia.gov)
|
||||
:link(ld,Manual.html)
|
||||
:link(lc,Commands_all.html)
|
||||
|
||||
:line
|
||||
|
||||
Using LAMMPS in client/server mode :h3
|
||||
|
||||
Client/server coupling of two codes is where one code is the "client"
|
||||
and sends request messages to a "server" code. The server responds to
|
||||
each request with a reply message. This enables the two codes to work
|
||||
in tandem to perform a simulation. LAMMPS can act as either a client
|
||||
or server code.
|
||||
|
||||
Some advantages of client/server coupling are that the two codes run
|
||||
as stand-alone executables; they are not linked together. Thus
|
||||
neither code needs to have a library interface. This often makes it
|
||||
easier to run the two codes on different numbers of processors. If a
|
||||
message protocol (format and content) is defined for a particular kind
|
||||
of simulation, then in principle any code that implements the
|
||||
client-side protocol can be used in tandem with any code that
|
||||
implements the server-side protocol, without the two codes needing to
|
||||
know anything more specific about each other.
|
||||
|
||||
A simple example of client/server coupling is where LAMMPS is the
|
||||
client code performing MD timestepping. Each timestep it sends a
|
||||
message to a server quantum code containing current coords of all the
|
||||
atoms. The quantum code computes energy and forces based on the
|
||||
coords. It returns them as a message to LAMMPS, which completes the
|
||||
timestep.
|
||||
|
||||
Alternate methods for code coupling with LAMMPS are described on
|
||||
the "Howto couple"_Howto_couple.html doc page.
|
||||
|
||||
LAMMPS support for client/server coupling is in its "MESSAGE
|
||||
package"_Packages_details.html#PKG-MESSAGE which implements several
|
||||
commands that enable LAMMPS to act as a client or server, as discussed
|
||||
below. The MESSAGE package also wraps a client/server library called
|
||||
CSlib which enables two codes to exchange messages in different ways,
|
||||
either via files, sockets, or MPI. The CSlib is provided with LAMMPS
|
||||
in the lib/message dir. The CSlib has its own
|
||||
"website"_http://cslib.sandia.gov with documentation and test
|
||||
programs.
|
||||
|
||||
NOTE: For client/server coupling to work between LAMMPS and another
|
||||
code, the other code also has to use the CSlib. This can sometimes be
|
||||
done without any modifications to the other code by simply wrapping it
|
||||
with a Python script that exchanges CSlib messages with LAMMPS and
|
||||
prepares input for or processes output from the other code. The other
|
||||
code also has to implement a matching protocol for the format and
|
||||
content of messages that LAMMPS exchanges with it.
|
||||
|
||||
These are the commands currently in the MESSAGE package for two
|
||||
protocols, MD and MC (Monte Carlo). New protocols can easily be
|
||||
defined and added to this directory, where LAMMPS acts as either the
|
||||
client or server.
|
||||
|
||||
"message"_message.html
|
||||
"fix client md"_fix_client_md.html = LAMMPS is a client for running MD
|
||||
"server md"_server_md.html = LAMMPS is a server for computing MD forces
|
||||
"server mc"_server_mc.html = LAMMPS is a server for computing a Monte Carlo energy :ul
|
||||
|
||||
The server doc files give details of the message protocols
|
||||
for data that is exchanged bewteen the client and server.
|
||||
|
||||
These example directories illustrate how to use LAMMPS as either a
|
||||
client or server code:
|
||||
|
||||
examples/message
|
||||
examples/COUPLE/README
|
||||
examples/COUPLE/lammps_mc
|
||||
examples/COUPLE/lammps_vasp :ul
|
||||
|
||||
The examples/message dir couples a client instance of LAMMPS to a
|
||||
server instance of LAMMPS.
|
||||
|
||||
The lammps_mc dir shows how to couple LAMMPS as a server to a simple
|
||||
Monte Carlo client code as the driver.
|
||||
|
||||
The lammps_vasp dir shows how to couple LAMMPS as a client code
|
||||
running MD timestepping to VASP acting as a server providing quantum
|
||||
DFT forces, thru a Python wrapper script on VASP.
|
||||
|
||||
Here is how to launch a client and server code together for any of the
|
||||
4 modes of message exchange that the "message"_message.html command
|
||||
and the CSlib support. Here LAMMPS is used as both the client and
|
||||
server code. Another code could be subsitituted for either.
|
||||
|
||||
The examples below show launching both codes from the same window (or
|
||||
batch script), using the "&" character to launch the first code in the
|
||||
background. For all modes except {mpi/one}, you could also launch the
|
||||
codes in separate windows on your desktop machine. It does not
|
||||
matter whether you launch the client or server first.
|
||||
|
||||
In these examples either code can be run on one or more processors.
|
||||
If running in a non-MPI mode (file or zmq) you can launch a code on a
|
||||
single processor without using mpirun.
|
||||
|
||||
IMPORTANT: If you run in mpi/two mode, you must launch both codes via
|
||||
mpirun, even if one or both of them runs on a single processor. This
|
||||
is so that MPI can figure out how to connect both MPI processes
|
||||
together to exchange MPI messages between them.
|
||||
|
||||
For message exchange in {file}, {zmq}, or {mpi/two} modes:
|
||||
|
||||
% mpirun -np 1 lmp_mpi -log log.client < in.client &
|
||||
% mpirun -np 2 lmp_mpi -log log.server < in.server :pre
|
||||
|
||||
% mpirun -np 4 lmp_mpi -log log.client < in.client &
|
||||
% mpirun -np 1 lmp_mpi -log log.server < in.server :pre
|
||||
|
||||
% mpirun -np 2 lmp_mpi -log log.client < in.client &
|
||||
% mpirun -np 4 lmp_mpi -log log.server < in.server :pre
|
||||
|
||||
For message exchange in {mpi/one} mode:
|
||||
|
||||
Launch both codes in a single mpirun command:
|
||||
|
||||
mpirun -np 2 lmp_mpi -mpicolor 0 -in in.message.client -log log.client : -np 4 lmp_mpi -mpicolor 1 -in in.message.server -log log.server :pre
|
||||
|
||||
The two -np values determine how many procs the client and the server
|
||||
run on.
|
||||
|
||||
A LAMMPS executable run in this manner must use the -mpicolor color
|
||||
command-line option as their its option, where color is an integer
|
||||
label that will be used to distinguish one executable from another in
|
||||
the multiple executables that the mpirun command launches. In this
|
||||
example the client was colored with a 0, and the server with a 1.
|
||||
253
doc/src/Howto_coreshell.txt
Normal file
@ -0,0 +1,253 @@
|
||||
"Higher level section"_Howto.html - "LAMMPS WWW Site"_lws - "LAMMPS
|
||||
Documentation"_ld - "LAMMPS Commands"_lc :c
|
||||
|
||||
:link(lws,http://lammps.sandia.gov)
|
||||
:link(ld,Manual.html)
|
||||
:link(lc,Commands_all.html)
|
||||
|
||||
:line
|
||||
|
||||
Adiabatic core/shell model :h3
|
||||
|
||||
The adiabatic core-shell model by "Mitchell and
|
||||
Fincham"_#MitchellFincham is a simple method for adding polarizability
|
||||
to a system. In order to mimic the electron shell of an ion, a
|
||||
satellite particle is attached to it. This way the ions are split into
|
||||
a core and a shell where the latter is meant to react to the
|
||||
electrostatic environment inducing polarizability. See the "Howto
|
||||
polarizable"_Howto_polarizable.html doc page for a discussion of all
|
||||
the polarizable models available in LAMMPS.
|
||||
|
||||
Technically, shells are attached to the cores by a spring force f =
|
||||
k*r where k is a parametrized spring constant and r is the distance
|
||||
between the core and the shell. The charges of the core and the shell
|
||||
add up to the ion charge, thus q(ion) = q(core) + q(shell). This
|
||||
setup introduces the ion polarizability (alpha) given by
|
||||
alpha = q(shell)^2 / k. In a
|
||||
similar fashion the mass of the ion is distributed on the core and the
|
||||
shell with the core having the larger mass.
|
||||
|
||||
To run this model in LAMMPS, "atom_style"_atom_style.html {full} can
|
||||
be used since atom charge and bonds are needed. Each kind of
|
||||
core/shell pair requires two atom types and a bond type. The core and
|
||||
shell of a core/shell pair should be bonded to each other with a
|
||||
harmonic bond that provides the spring force. For example, a data file
|
||||
for NaCl, as found in examples/coreshell, has this format:
|
||||
|
||||
432 atoms # core and shell atoms
|
||||
216 bonds # number of core/shell springs :pre
|
||||
|
||||
4 atom types # 2 cores and 2 shells for Na and Cl
|
||||
2 bond types :pre
|
||||
|
||||
0.0 24.09597 xlo xhi
|
||||
0.0 24.09597 ylo yhi
|
||||
0.0 24.09597 zlo zhi :pre
|
||||
|
||||
Masses # core/shell mass ratio = 0.1 :pre
|
||||
|
||||
1 20.690784 # Na core
|
||||
2 31.90500 # Cl core
|
||||
3 2.298976 # Na shell
|
||||
4 3.54500 # Cl shell :pre
|
||||
|
||||
Atoms :pre
|
||||
|
||||
1 1 2 1.5005 0.00000000 0.00000000 0.00000000 # core of core/shell pair 1
|
||||
2 1 4 -2.5005 0.00000000 0.00000000 0.00000000 # shell of core/shell pair 1
|
||||
3 2 1 1.5056 4.01599500 4.01599500 4.01599500 # core of core/shell pair 2
|
||||
4 2 3 -0.5056 4.01599500 4.01599500 4.01599500 # shell of core/shell pair 2
|
||||
(...) :pre
|
||||
|
||||
Bonds # Bond topology for spring forces :pre
|
||||
|
||||
1 2 1 2 # spring for core/shell pair 1
|
||||
2 2 3 4 # spring for core/shell pair 2
|
||||
(...) :pre
|
||||
|
||||
Non-Coulombic (e.g. Lennard-Jones) pairwise interactions are only
|
||||
defined between the shells. Coulombic interactions are defined
|
||||
between all cores and shells. If desired, additional bonds can be
|
||||
specified between cores.
|
||||
|
||||
The "special_bonds"_special_bonds.html command should be used to
|
||||
turn-off the Coulombic interaction within core/shell pairs, since that
|
||||
interaction is set by the bond spring. This is done using the
|
||||
"special_bonds"_special_bonds.html command with a 1-2 weight = 0.0,
|
||||
which is the default value. It needs to be considered whether one has
|
||||
to adjust the "special_bonds"_special_bonds.html weighting according
|
||||
to the molecular topology since the interactions of the shells are
|
||||
bypassed over an extra bond.
|
||||
|
||||
Note that this core/shell implementation does not require all ions to
|
||||
be polarized. One can mix core/shell pairs and ions without a
|
||||
satellite particle if desired.
|
||||
|
||||
Since the core/shell model permits distances of r = 0.0 between the
|
||||
core and shell, a pair style with a "cs" suffix needs to be used to
|
||||
implement a valid long-range Coulombic correction. Several such pair
|
||||
styles are provided in the CORESHELL package. See "this doc
|
||||
page"_pair_cs.html for details. All of the core/shell enabled pair
|
||||
styles require the use of a long-range Coulombic solver, as specified
|
||||
by the "kspace_style"_kspace_style.html command. Either the PPPM or
|
||||
Ewald solvers can be used.
|
||||
|
||||
For the NaCL example problem, these pair style and bond style settings
|
||||
are used:
|
||||
|
||||
pair_style born/coul/long/cs 20.0 20.0
|
||||
pair_coeff * * 0.0 1.000 0.00 0.00 0.00
|
||||
pair_coeff 3 3 487.0 0.23768 0.00 1.05 0.50 #Na-Na
|
||||
pair_coeff 3 4 145134.0 0.23768 0.00 6.99 8.70 #Na-Cl
|
||||
pair_coeff 4 4 405774.0 0.23768 0.00 72.40 145.40 #Cl-Cl :pre
|
||||
|
||||
bond_style harmonic
|
||||
bond_coeff 1 63.014 0.0
|
||||
bond_coeff 2 25.724 0.0 :pre
|
||||
|
||||
When running dynamics with the adiabatic core/shell model, the
|
||||
following issues should be considered. The relative motion of
|
||||
the core and shell particles corresponds to the polarization,
|
||||
hereby an instantaneous relaxation of the shells is approximated
|
||||
and a fast core/shell spring frequency ensures a nearly constant
|
||||
internal kinetic energy during the simulation.
|
||||
Thermostats can alter this polarization behaviour, by scaling the
|
||||
internal kinetic energy, meaning the shell will not react freely to
|
||||
its electrostatic environment.
|
||||
Therefore it is typically desirable to decouple the relative motion of
|
||||
the core/shell pair, which is an imaginary degree of freedom, from the
|
||||
real physical system. To do that, the "compute
|
||||
temp/cs"_compute_temp_cs.html command can be used, in conjunction with
|
||||
any of the thermostat fixes, such as "fix nvt"_fix_nh.html or "fix
|
||||
langevin"_fix_langevin.html. This compute uses the center-of-mass velocity
|
||||
of the core/shell pairs to calculate a temperature, and insures that
|
||||
velocity is what is rescaled for thermostatting purposes. This
|
||||
compute also works for a system with both core/shell pairs and
|
||||
non-polarized ions (ions without an attached satellite particle). The
|
||||
"compute temp/cs"_compute_temp_cs.html command requires input of two
|
||||
groups, one for the core atoms, another for the shell atoms.
|
||||
Non-polarized ions which might also be included in the treated system
|
||||
should not be included into either of these groups, they are taken
|
||||
into account by the {group-ID} (2nd argument) of the compute. The
|
||||
groups can be defined using the "group {type}"_group.html command.
|
||||
Note that to perform thermostatting using this definition of
|
||||
temperature, the "fix modify temp"_fix_modify.html command should be
|
||||
used to assign the compute to the thermostat fix. Likewise the
|
||||
"thermo_modify temp"_thermo_modify.html command can be used to make
|
||||
this temperature be output for the overall system.
|
||||
|
||||
For the NaCl example, this can be done as follows:
|
||||
|
||||
group cores type 1 2
|
||||
group shells type 3 4
|
||||
compute CSequ all temp/cs cores shells
|
||||
fix thermoberendsen all temp/berendsen 1427 1427 0.4 # thermostat for the true physical system
|
||||
fix thermostatequ all nve # integrator as needed for the berendsen thermostat
|
||||
fix_modify thermoberendsen temp CSequ
|
||||
thermo_modify temp CSequ # output of center-of-mass derived temperature :pre
|
||||
|
||||
The pressure for the core/shell system is computed via the regular
|
||||
LAMMPS convention by "treating the cores and shells as individual
|
||||
particles"_#MitchellFincham2. For the thermo output of the pressure
|
||||
as well as for the application of a barostat, it is necessary to
|
||||
use an additional "pressure"_compute_pressure.html compute based on
|
||||
the default "temperature"_compute_temp.html and specifying it as a
|
||||
second argument in "fix modify"_fix_modify.html and
|
||||
"thermo_modify"_thermo_modify.html resulting in:
|
||||
|
||||
(...)
|
||||
compute CSequ all temp/cs cores shells
|
||||
compute thermo_press_lmp all pressure thermo_temp # pressure for individual particles
|
||||
thermo_modify temp CSequ press thermo_press_lmp # modify thermo to regular pressure
|
||||
fix press_bar all npt temp 300 300 0.04 iso 0 0 0.4
|
||||
fix_modify press_bar temp CSequ press thermo_press_lmp # pressure modification for correct kinetic scalar :pre
|
||||
|
||||
If "compute temp/cs"_compute_temp_cs.html is used, the decoupled
|
||||
relative motion of the core and the shell should in theory be
|
||||
stable. However numerical fluctuation can introduce a small
|
||||
momentum to the system, which is noticable over long trajectories.
|
||||
Therefore it is recommendable to use the "fix
|
||||
momentum"_fix_momentum.html command in combination with "compute
|
||||
temp/cs"_compute_temp_cs.html when equilibrating the system to
|
||||
prevent any drift.
|
||||
|
||||
When initializing the velocities of a system with core/shell pairs, it
|
||||
is also desirable to not introduce energy into the relative motion of
|
||||
the core/shell particles, but only assign a center-of-mass velocity to
|
||||
the pairs. This can be done by using the {bias} keyword of the
|
||||
"velocity create"_velocity.html command and assigning the "compute
|
||||
temp/cs"_compute_temp_cs.html command to the {temp} keyword of the
|
||||
"velocity"_velocity.html command, e.g.
|
||||
|
||||
velocity all create 1427 134 bias yes temp CSequ
|
||||
velocity all scale 1427 temp CSequ :pre
|
||||
|
||||
To maintain the correct polarizability of the core/shell pairs, the
|
||||
kinetic energy of the internal motion shall remain nearly constant.
|
||||
Therefore the choice of spring force and mass ratio need to ensure
|
||||
much faster relative motion of the 2 atoms within the core/shell pair
|
||||
than their center-of-mass velocity. This allows the shells to
|
||||
effectively react instantaneously to the electrostatic environment and
|
||||
limits energy transfer to or from the core/shell oscillators.
|
||||
This fast movement also dictates the timestep that can be used.
|
||||
|
||||
The primary literature of the adiabatic core/shell model suggests that
|
||||
the fast relative motion of the core/shell pairs only allows negligible
|
||||
energy transfer to the environment.
|
||||
The mentioned energy transfer will typically lead to a small drift
|
||||
in total energy over time. This internal energy can be monitored
|
||||
using the "compute chunk/atom"_compute_chunk_atom.html and "compute
|
||||
temp/chunk"_compute_temp_chunk.html commands. The internal kinetic
|
||||
energies of each core/shell pair can then be summed using the sum()
|
||||
special function of the "variable"_variable.html command. Or they can
|
||||
be time/averaged and output using the "fix ave/time"_fix_ave_time.html
|
||||
command. To use these commands, each core/shell pair must be defined
|
||||
as a "chunk". If each core/shell pair is defined as its own molecule,
|
||||
the molecule ID can be used to define the chunks. If cores are bonded
|
||||
to each other to form larger molecules, the chunks can be identified
|
||||
by the "fix property/atom"_fix_property_atom.html via assigning a
|
||||
core/shell ID to each atom using a special field in the data file read
|
||||
by the "read_data"_read_data.html command. This field can then be
|
||||
accessed by the "compute property/atom"_compute_property_atom.html
|
||||
command, to use as input to the "compute
|
||||
chunk/atom"_compute_chunk_atom.html command to define the core/shell
|
||||
pairs as chunks.
|
||||
|
||||
For example if core/shell pairs are the only molecules:
|
||||
|
||||
read_data NaCl_CS_x0.1_prop.data
|
||||
compute prop all property/atom molecule
|
||||
compute cs_chunk all chunk/atom c_prop
|
||||
compute cstherm all temp/chunk cs_chunk temp internal com yes cdof 3.0 # note the chosen degrees of freedom for the core/shell pairs
|
||||
fix ave_chunk all ave/time 10 1 10 c_cstherm file chunk.dump mode vector :pre
|
||||
|
||||
For example if core/shell pairs and other molecules are present:
|
||||
|
||||
fix csinfo all property/atom i_CSID # property/atom command
|
||||
read_data NaCl_CS_x0.1_prop.data fix csinfo NULL CS-Info # atom property added in the data-file
|
||||
compute prop all property/atom i_CSID
|
||||
(...) :pre
|
||||
|
||||
The additional section in the date file would be formatted like this:
|
||||
|
||||
CS-Info # header of additional section :pre
|
||||
|
||||
1 1 # column 1 = atom ID, column 2 = core/shell ID
|
||||
2 1
|
||||
3 2
|
||||
4 2
|
||||
5 3
|
||||
6 3
|
||||
7 4
|
||||
8 4
|
||||
(...) :pre
|
||||
|
||||
:line
|
||||
|
||||
:link(MitchellFincham)
|
||||
[(Mitchell and Fincham)] Mitchell, Fincham, J Phys Condensed Matter,
|
||||
5, 1031-1038 (1993).
|
||||
|
||||
:link(MitchellFincham2)
|
||||
[(Fincham)] Fincham, Mackrodt and Mitchell, J Phys Condensed Matter,
|
||||
6, 393-404 (1994).
|
||||
116
doc/src/Howto_couple.txt
Normal file
@ -0,0 +1,116 @@
|
||||
"Higher level section"_Howto.html - "LAMMPS WWW Site"_lws - "LAMMPS
|
||||
Documentation"_ld - "LAMMPS Commands"_lc :c
|
||||
|
||||
:link(lws,http://lammps.sandia.gov)
|
||||
:link(ld,Manual.html)
|
||||
:link(lc,Commands_all.html)
|
||||
|
||||
:line
|
||||
|
||||
Coupling LAMMPS to other codes :h3
|
||||
|
||||
LAMMPS is designed to allow it to be coupled to other codes. For
|
||||
example, a quantum mechanics code might compute forces on a subset of
|
||||
atoms and pass those forces to LAMMPS. Or a continuum finite element
|
||||
(FE) simulation might use atom positions as boundary conditions on FE
|
||||
nodal points, compute a FE solution, and return interpolated forces on
|
||||
MD atoms.
|
||||
|
||||
LAMMPS can be coupled to other codes in at least 4 ways. Each has
|
||||
advantages and disadvantages, which you'll have to think about in the
|
||||
context of your application.
|
||||
|
||||
:line
|
||||
|
||||
(1) Define a new "fix"_fix.html command that calls the other code. In
|
||||
this scenario, LAMMPS is the driver code. During its timestepping,
|
||||
the fix is invoked, and can make library calls to the other code,
|
||||
which has been linked to LAMMPS as a library. This is the way the
|
||||
"POEMS"_poems package that performs constrained rigid-body motion on
|
||||
groups of atoms is hooked to LAMMPS. See the "fix
|
||||
poems"_fix_poems.html command for more details. See the
|
||||
"Modify"_Modify.html doc pages for info on how to add a new fix to
|
||||
LAMMPS.
|
||||
|
||||
:link(poems,http://www.rpi.edu/~anderk5/lab)
|
||||
|
||||
:line
|
||||
|
||||
(2) Define a new LAMMPS command that calls the other code. This is
|
||||
conceptually similar to method (1), but in this case LAMMPS and the
|
||||
other code are on a more equal footing. Note that now the other code
|
||||
is not called during the timestepping of a LAMMPS run, but between
|
||||
runs. The LAMMPS input script can be used to alternate LAMMPS runs
|
||||
with calls to the other code, invoked via the new command. The
|
||||
"run"_run.html command facilitates this with its {every} option, which
|
||||
makes it easy to run a few steps, invoke the command, run a few steps,
|
||||
invoke the command, etc.
|
||||
|
||||
In this scenario, the other code can be called as a library, as in
|
||||
(1), or it could be a stand-alone code, invoked by a system() call
|
||||
made by the command (assuming your parallel machine allows one or more
|
||||
processors to start up another program). In the latter case the
|
||||
stand-alone code could communicate with LAMMPS thru files that the
|
||||
command writes and reads.
|
||||
|
||||
See the "Modify command"_Modify_command.html doc page for info on how
|
||||
to add a new command to LAMMPS.
|
||||
|
||||
:line
|
||||
|
||||
(3) Use LAMMPS as a library called by another code. In this case the
|
||||
other code is the driver and calls LAMMPS as needed. Or a wrapper
|
||||
code could link and call both LAMMPS and another code as libraries.
|
||||
Again, the "run"_run.html command has options that allow it to be
|
||||
invoked with minimal overhead (no setup or clean-up) if you wish to do
|
||||
multiple short runs, driven by another program.
|
||||
|
||||
Examples of driver codes that call LAMMPS as a library are included in
|
||||
the examples/COUPLE directory of the LAMMPS distribution; see
|
||||
examples/COUPLE/README for more details:
|
||||
|
||||
simple: simple driver programs in C++ and C which invoke LAMMPS as a
|
||||
library :ulb,l
|
||||
|
||||
lammps_quest: coupling of LAMMPS and "Quest"_quest, to run classical
|
||||
MD with quantum forces calculated by a density functional code :l
|
||||
|
||||
lammps_spparks: coupling of LAMMPS and "SPPARKS"_spparks, to couple
|
||||
a kinetic Monte Carlo model for grain growth using MD to calculate
|
||||
strain induced across grain boundaries :l
|
||||
:ule
|
||||
|
||||
:link(quest,http://dft.sandia.gov/Quest)
|
||||
:link(spparks,http://www.sandia.gov/~sjplimp/spparks.html)
|
||||
|
||||
The "Build basics"_Build_basics.html doc page describes how to build
|
||||
LAMMPS as a library. Once this is done, you can interface with LAMMPS
|
||||
either via C++, C, Fortran, or Python (or any other language that
|
||||
supports a vanilla C-like interface). For example, from C++ you could
|
||||
create one (or more) "instances" of LAMMPS, pass it an input script to
|
||||
process, or execute individual commands, all by invoking the correct
|
||||
class methods in LAMMPS. From C or Fortran you can make function
|
||||
calls to do the same things. See the "Python"_Python_head.html doc
|
||||
pages for a description of the Python wrapper provided with LAMMPS
|
||||
that operates through the LAMMPS library interface.
|
||||
|
||||
The files src/library.cpp and library.h contain the C-style interface
|
||||
to LAMMPS. See the "Howto library"_Howto_library.html doc page for a
|
||||
description of the interface and how to extend it for your needs.
|
||||
|
||||
Note that the lammps_open() function that creates an instance of
|
||||
LAMMPS takes an MPI communicator as an argument. This means that
|
||||
instance of LAMMPS will run on the set of processors in the
|
||||
communicator. Thus the calling code can run LAMMPS on all or a subset
|
||||
of processors. For example, a wrapper script might decide to
|
||||
alternate between LAMMPS and another code, allowing them both to run
|
||||
on all the processors. Or it might allocate half the processors to
|
||||
LAMMPS and half to the other code and run both codes simultaneously
|
||||
before syncing them up periodically. Or it might instantiate multiple
|
||||
instances of LAMMPS to perform different calculations.
|
||||
|
||||
:line
|
||||
|
||||
(4) Couple LAMMPS with another code in a client/server mode. This is
|
||||
described on the "Howto client/server"_Howto_client_server.html doc
|
||||
page.
|
||||
31
doc/src/Howto_diffusion.txt
Normal file
@ -0,0 +1,31 @@
|
||||
"Higher level section"_Howto.html - "LAMMPS WWW Site"_lws - "LAMMPS
|
||||
Documentation"_ld - "LAMMPS Commands"_lc :c
|
||||
|
||||
:link(lws,http://lammps.sandia.gov)
|
||||
:link(ld,Manual.html)
|
||||
:link(lc,Commands_all.html)
|
||||
|
||||
:line
|
||||
|
||||
Calculate diffusion coefficients :h3
|
||||
|
||||
The diffusion coefficient D of a material can be measured in at least
|
||||
2 ways using various options in LAMMPS. See the examples/DIFFUSE
|
||||
directory for scripts that implement the 2 methods discussed here for
|
||||
a simple Lennard-Jones fluid model.
|
||||
|
||||
The first method is to measure the mean-squared displacement (MSD) of
|
||||
the system, via the "compute msd"_compute_msd.html command. The slope
|
||||
of the MSD versus time is proportional to the diffusion coefficient.
|
||||
The instantaneous MSD values can be accumulated in a vector via the
|
||||
"fix vector"_fix_vector.html command, and a line fit to the vector to
|
||||
compute its slope via the "variable slope"_variable.html function, and
|
||||
thus extract D.
|
||||
|
||||
The second method is to measure the velocity auto-correlation function
|
||||
(VACF) of the system, via the "compute vacf"_compute_vacf.html
|
||||
command. The time-integral of the VACF is proportional to the
|
||||
diffusion coefficient. The instantaneous VACF values can be
|
||||
accumulated in a vector via the "fix vector"_fix_vector.html command,
|
||||
and time integrated via the "variable trap"_variable.html function,
|
||||
and thus extract D.
|
||||