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36 # The earliest version of the CUDA toolkit that supports c++17 is 11.0
37 set(REQUIRED_CUDA_VERSION 11.0)
38 set(REQUIRED_CUDA_COMPUTE_CAPABILITY 3.0)
42 option(GMX_CLANG_CUDA "Use clang for CUDA" OFF)
45 message(FATAL_ERROR "CUDA acceleration is not available in double precision")
48 find_package(CUDA ${REQUIRED_CUDA_VERSION} REQUIRED)
50 # Try to execute ${CUDA_NVCC_EXECUTABLE} --version and set the output
51 # (or an error string) in the argument variable.
52 # Note that semicolon is used as separator for nvcc.
55 # COMPILER_INFO - [output variable] string with compiler path, ID and
56 # some compiler-provided information
57 # DEVICE_COMPILER_FLAGS - [output variable] device flags for the compiler
58 # HOST_COMPILER_FLAGS - [output variable] host flags for the compiler, if propagated
60 macro(get_cuda_compiler_info COMPILER_INFO DEVICE_COMPILER_FLAGS HOST_COMPILER_FLAGS)
61 if(NOT GMX_CLANG_CUDA)
62 if(CUDA_NVCC_EXECUTABLE)
64 # Get the nvcc version string. This is multi-line, but since it is only 4 lines
65 # and might change in the future it is better to store than trying to parse out
66 # the version from the current format.
67 execute_process(COMMAND ${CUDA_NVCC_EXECUTABLE} --version
68 RESULT_VARIABLE _nvcc_version_res
69 OUTPUT_VARIABLE _nvcc_version_out
70 ERROR_VARIABLE _nvcc_version_err
71 OUTPUT_STRIP_TRAILING_WHITESPACE)
72 if (${_nvcc_version_res} EQUAL 0)
73 # Fix multi-line mess: Replace newline with ";" so we can use it in a define
74 string(REPLACE "\n" ";" _nvcc_info_singleline ${_nvcc_version_out})
75 SET(${COMPILER_INFO} "${CUDA_NVCC_EXECUTABLE} ${_nvcc_info_singleline}")
76 string(TOUPPER ${CMAKE_BUILD_TYPE} _build_type)
77 SET(_compiler_flags "${CUDA_NVCC_FLAGS_${_build_type}}")
78 if(CUDA_PROPAGATE_HOST_FLAGS)
79 set(${HOST_COMPILER_FLAGS} BUILD_CXXFLAGS)
81 set(${HOST_COMPILER_FLAGS} "")
83 SET(${DEVICE_COMPILER_FLAGS} "${CUDA_NVCC_FLAGS}${CUDA_NVCC_FLAGS_${_build_type}}")
85 SET(${COMPILER_INFO} "N/A")
86 SET(${COMPILER_FLAGS} "N/A")
90 # CXX compiler is the CUDA compiler
91 set(${COMPILER_INFO} "${CMAKE_CXX_COMPILER} ${CMAKE_CXX_COMPILER_ID} ${CMAKE_CXX_COMPILER_VERSION}")
92 # there are some extra flags
93 set(${COMPILER_FLAGS} "${CMAKE_CXX_FLAGS} ${CMAKE_CXX_FLAGS_${_build_type}} ${GMX_CUDA_CLANG_FLAGS}")
98 include(gmxManageClangCudaConfig)
99 list(APPEND GMX_EXTRA_LIBRARIES ${GMX_CUDA_CLANG_LINK_LIBS})
100 link_directories("${GMX_CUDA_CLANG_LINK_DIRS}")
102 # Using NVIDIA compiler
103 if(NOT CUDA_NVCC_EXECUTABLE)
104 message(FATAL_ERROR "nvcc is required for a CUDA build, please set CUDA_TOOLKIT_ROOT_DIR appropriately")
106 # set up nvcc options
107 include(gmxManageNvccConfig)
110 option(GMX_CUDA_NB_SINGLE_COMPILATION_UNIT "Whether to compile the CUDA non-bonded module using a single compilation unit." OFF)
111 mark_as_advanced(GMX_CUDA_NB_SINGLE_COMPILATION_UNIT)