diff --git a/cmake/Modules/OpenCLLoader.cmake b/cmake/Modules/OpenCLLoader.cmake new file mode 100644 index 0000000000..ecd9204d24 --- /dev/null +++ b/cmake/Modules/OpenCLLoader.cmake @@ -0,0 +1,54 @@ +message(STATUS "Downloading and building OpenCL loader library") + +if(CMAKE_BUILD_TYPE STREQUAL Debug) + set(OPENCL_LOADER_LIB_POSTFIX d) +else() + set(OPENCL_LOADER_LIB_POSTFIX) +endif() + +include(ExternalProject) +set(OPENCL_LOADER_URL "https://download.lammps.org/thirdparty/opencl-loader-2020.12.18.tar.gz" CACHE STRING "URL for OpenCL loader tarball") +mark_as_advanced(OPENCL_LOADER_URL) +ExternalProject_Add(opencl_loader + URL ${OPENCL_LOADER_URL} + URL_MD5 011cdcbd41030be94f3fced6d763a52a + SOURCE_DIR "${CMAKE_BINARY_DIR}/opencl_loader-src" + BINARY_DIR "${CMAKE_BINARY_DIR}/opencl_loader-build" + CMAKE_ARGS ${CMAKE_REQUEST_PIC} ${CMAKE_EXTRA_OPENCL_LOADER_OPTS} + -DCMAKE_CXX_COMPILER=${CMAKE_CXX_COMPILER} + -DCMAKE_INSTALL_PREFIX= + -DCMAKE_BUILD_TYPE=${CMAKE_BUILD_TYPE} + -DCMAKE_MAKE_PROGRAM=${CMAKE_MAKE_PROGRAM} + -DCMAKE_TOOLCHAIN_FILE=${CMAKE_TOOLCHAIN_FILE} + BUILD_BYPRODUCTS /libOpenCL${OPENCL_LOADER_LIB_POSTFIX}${CMAKE_STATIC_LIBRARY_SUFFIX} + LOG_DOWNLOAD ON + LOG_CONFIGURE ON + LOG_BUILD ON + INSTALL_COMMAND "" + TEST_COMMAND "") + +ExternalProject_Get_Property(opencl_loader SOURCE_DIR) +set(OPENCL_LOADER_INCLUDE_DIR ${SOURCE_DIR}/inc) + +# workaround for CMake 3.10 on ubuntu 18.04 +file(MAKE_DIRECTORY ${OPENCL_LOADER_INCLUDE_DIR}) + +ExternalProject_Get_Property(opencl_loader BINARY_DIR) +set(OPENCL_LOADER_LIBRARY_PATH "${BINARY_DIR}/libOpenCL${OPENCL_LOADER_LIB_POSTFIX}${CMAKE_STATIC_LIBRARY_SUFFIX}") + +find_package(Threads QUIET) +if(NOT WIN32) + set(OPENCL_LOADER_DEP_LIBS "Threads::Threads;${CMAKE_DL_LIBS}") +else() + set(OPENCL_LOADER_DEP_LIBS "cfgmgr32;runtimeobject") +endif() + +add_library(OpenCL::OpenCL UNKNOWN IMPORTED) +add_dependencies(OpenCL::OpenCL opencl_loader) + +set_target_properties(OpenCL::OpenCL PROPERTIES + IMPORTED_LOCATION ${OPENCL_LOADER_LIBRARY_PATH} + INTERFACE_INCLUDE_DIRECTORIES ${OPENCL_LOADER_INCLUDE_DIR} + INTERFACE_LINK_LIBRARIES "${OPENCL_LOADER_DEP_LIBS}") + + diff --git a/cmake/Modules/Packages/GPU.cmake b/cmake/Modules/Packages/GPU.cmake index 76ad4190cf..e2586881ef 100644 --- a/cmake/Modules/Packages/GPU.cmake +++ b/cmake/Modules/Packages/GPU.cmake @@ -141,19 +141,10 @@ if(GPU_API STREQUAL "CUDA") target_include_directories(nvc_get_devices PRIVATE ${CUDA_INCLUDE_DIRS}) elseif(GPU_API STREQUAL "OPENCL") - if(${CMAKE_SYSTEM_NAME} STREQUAL "Windows") - # download and unpack support binaries for compilation of windows binaries. - set(LAMMPS_THIRDPARTY_URL "https://download.lammps.org/thirdparty") - file(DOWNLOAD "${LAMMPS_THIRDPARTY_URL}/opencl-win-devel.tar.gz" "${CMAKE_CURRENT_BINARY_DIR}/opencl-win-devel.tar.gz" - EXPECTED_MD5 2c00364888d5671195598b44c2e0d44d) - execute_process(COMMAND ${CMAKE_COMMAND} -E tar xzf opencl-win-devel.tar.gz WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}) - add_library(OpenCL::OpenCL UNKNOWN IMPORTED) - if(${CMAKE_SYSTEM_PROCESSOR} STREQUAL "x86") - set_target_properties(OpenCL::OpenCL PROPERTIES IMPORTED_LOCATION "${CMAKE_CURRENT_BINARY_DIR}/OpenCL/lib_win32/libOpenCL.dll") - elseif(${CMAKE_SYSTEM_PROCESSOR} STREQUAL "x86_64") - set_target_properties(OpenCL::OpenCL PROPERTIES IMPORTED_LOCATION "${CMAKE_CURRENT_BINARY_DIR}/OpenCL/lib_win64/libOpenCL.dll") - endif() - set_target_properties(OpenCL::OpenCL PROPERTIES INTERFACE_INCLUDE_DIRECTORIES "${CMAKE_CURRENT_BINARY_DIR}/OpenCL/include") + option(USE_STATIC_OPENCL_LOADER "Download and include a static OpenCL ICD loader" ON) + mark_as_advanced(USE_STATIC_OPENCL_LOADER) + if (USE_STATIC_OPENCL_LOADER) + include(OpenCLLoader) else() find_package(OpenCL REQUIRED) endif() @@ -208,6 +199,7 @@ elseif(GPU_API STREQUAL "OPENCL") add_executable(ocl_get_devices ${LAMMPS_LIB_SOURCE_DIR}/gpu/geryon/ucl_get_devices.cpp) target_compile_definitions(ocl_get_devices PRIVATE -DUCL_OPENCL) target_link_libraries(ocl_get_devices PRIVATE OpenCL::OpenCL) + add_dependencies(ocl_get_devices OpenCL::OpenCL) elseif(GPU_API STREQUAL "HIP") if(NOT DEFINED HIP_PATH) if(NOT DEFINED ENV{HIP_PATH}) @@ -390,13 +382,10 @@ elseif(GPU_API STREQUAL "HIP") target_link_libraries(lammps PRIVATE gpu) endif() -# GPU package -FindStyleHeaders(${GPU_SOURCES_DIR} FIX_CLASS fix_ FIX) - set_property(GLOBAL PROPERTY "GPU_SOURCES" "${GPU_SOURCES}") - -# detects styles which have GPU version +# detect styles which have a GPU version RegisterStylesExt(${GPU_SOURCES_DIR} gpu GPU_SOURCES) +RegisterFixStyle(${GPU_SOURCES_DIR}/fix_gpu.h) get_property(GPU_SOURCES GLOBAL PROPERTY GPU_SOURCES) diff --git a/doc/src/Build_extras.rst b/doc/src/Build_extras.rst index cf15de74bd..5e3356478d 100644 --- a/doc/src/Build_extras.rst +++ b/doc/src/Build_extras.rst @@ -133,6 +133,8 @@ CMake build # value = yes (default) or no -D CUDA_MPS_SUPPORT=value # enables some tweaks required to run with active nvidia-cuda-mps daemon # value = yes or no (default) + -D USE_STATIC_OPENCL_LOADER=value # downloads/includes OpenCL ICD loader library, no local OpenCL headers/libs needed + # value = yes (default) or no :code:`GPU_ARCH` settings for different GPU hardware is as follows: @@ -159,6 +161,12 @@ When building with CMake, you **must NOT** build the GPU library in ``lib/gpu`` using the traditional build procedure. CMake will detect files generated by that process and will terminate with an error and a suggestion for how to remove them. +If you are compiling for OpenCL, the default setting is to download, build, and +link with a static OpenCL ICD loader library and standard OpenCL headers. This +way no local OpenCL development headers or library needs to be present and only +OpenCL compatible drivers need to be installed to use OpenCL. If this is not +desired, you can set :code:`USE_STATIC_OPENCL_LOADER` to :code:`no`. + If you are compiling with HIP, note that before running CMake you will have to set appropriate environment variables. Some variables such as :code:`HCC_AMDGPU_TARGET` or :code:`CUDA_PATH` are necessary for :code:`hipcc`