mirror of
https://github.com/reactos/CMake.git
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272 lines
10 KiB
CMake
272 lines
10 KiB
CMake
# Synopsis:
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# CUDA_SELECT_NVCC_ARCH_FLAGS(out_variable [target_CUDA_architectures])
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# -- Selects GPU arch flags for nvcc based on target_CUDA_architectures
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# target_CUDA_architectures : Auto | Common | All | LIST(ARCH_AND_PTX ...)
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# - "Auto" detects local machine GPU compute arch at runtime.
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# - "Common" and "All" cover common and entire subsets of architectures
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# ARCH_AND_PTX : NAME | NUM.NUM | NUM.NUM(NUM.NUM) | NUM.NUM+PTX
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# NAME: Fermi Kepler Maxwell Kepler+Tegra Kepler+Tesla Maxwell+Tegra Pascal Volta Turing
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# NUM: Any number. Only those pairs are currently accepted by NVCC though:
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# 2.0 2.1 3.0 3.2 3.5 3.7 5.0 5.2 5.3 6.0 6.2 7.0 7.2 7.5
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# Returns LIST of flags to be added to CUDA_NVCC_FLAGS in ${out_variable}
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# Additionally, sets ${out_variable}_readable to the resulting numeric list
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# Example:
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# CUDA_SELECT_NVCC_ARCH_FLAGS(ARCH_FLAGS 3.0 3.5+PTX 5.2(5.0) Maxwell)
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# LIST(APPEND CUDA_NVCC_FLAGS ${ARCH_FLAGS})
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#
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# More info on CUDA architectures: https://en.wikipedia.org/wiki/CUDA
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#
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if(CMAKE_CUDA_COMPILER_LOADED) # CUDA as a language
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if(CMAKE_CUDA_COMPILER_ID STREQUAL "NVIDIA"
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AND CMAKE_CUDA_COMPILER_VERSION MATCHES "^([0-9]+\\.[0-9]+)")
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set(CUDA_VERSION "${CMAKE_MATCH_1}")
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endif()
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endif()
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# See: https://docs.nvidia.com/cuda/cuda-compiler-driver-nvcc/index.html#gpu-feature-list
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# This list will be used for CUDA_ARCH_NAME = All option
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set(CUDA_KNOWN_GPU_ARCHITECTURES "Fermi" "Kepler" "Maxwell")
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# This list will be used for CUDA_ARCH_NAME = Common option (enabled by default)
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set(CUDA_COMMON_GPU_ARCHITECTURES "3.0" "3.5" "5.0")
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if(CUDA_VERSION VERSION_LESS "7.0")
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set(CUDA_LIMIT_GPU_ARCHITECTURE "5.2")
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endif()
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# This list is used to filter CUDA archs when autodetecting
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set(CUDA_ALL_GPU_ARCHITECTURES "3.0" "3.2" "3.5" "5.0")
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if(CUDA_VERSION VERSION_GREATER_EQUAL "7.0")
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list(APPEND CUDA_KNOWN_GPU_ARCHITECTURES "Kepler+Tegra" "Kepler+Tesla" "Maxwell+Tegra")
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list(APPEND CUDA_COMMON_GPU_ARCHITECTURES "5.2")
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if(CUDA_VERSION VERSION_LESS "8.0")
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list(APPEND CUDA_COMMON_GPU_ARCHITECTURES "5.2+PTX")
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set(CUDA_LIMIT_GPU_ARCHITECTURE "6.0")
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endif()
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endif()
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if(CUDA_VERSION VERSION_GREATER_EQUAL "8.0")
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list(APPEND CUDA_KNOWN_GPU_ARCHITECTURES "Pascal")
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list(APPEND CUDA_COMMON_GPU_ARCHITECTURES "6.0" "6.1")
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list(APPEND CUDA_ALL_GPU_ARCHITECTURES "6.0" "6.1" "6.2")
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if(CUDA_VERSION VERSION_LESS "9.0")
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list(APPEND CUDA_COMMON_GPU_ARCHITECTURES "6.1+PTX")
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set(CUDA_LIMIT_GPU_ARCHITECTURE "7.0")
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endif()
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endif ()
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if(CUDA_VERSION VERSION_GREATER_EQUAL "9.0")
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list(APPEND CUDA_KNOWN_GPU_ARCHITECTURES "Volta")
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list(APPEND CUDA_COMMON_GPU_ARCHITECTURES "7.0" "7.0+PTX")
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list(APPEND CUDA_ALL_GPU_ARCHITECTURES "7.0" "7.0+PTX" "7.2" "7.2+PTX")
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if(CUDA_VERSION VERSION_LESS "10.0")
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set(CUDA_LIMIT_GPU_ARCHITECTURE "8.0")
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endif()
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endif()
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if(CUDA_VERSION VERSION_GREATER_EQUAL "10.0")
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list(APPEND CUDA_KNOWN_GPU_ARCHITECTURES "Turing")
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list(APPEND CUDA_COMMON_GPU_ARCHITECTURES "7.5" "7.5+PTX")
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list(APPEND CUDA_ALL_GPU_ARCHITECTURES "7.5" "7.5+PTX")
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if(CUDA_VERSION VERSION_LESS "11.0")
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set(CUDA_LIMIT_GPU_ARCHITECTURE "9.0")
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endif()
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endif()
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################################################################################################
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# A function for automatic detection of GPUs installed (if autodetection is enabled)
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# Usage:
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# CUDA_DETECT_INSTALLED_GPUS(OUT_VARIABLE)
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#
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function(CUDA_DETECT_INSTALLED_GPUS OUT_VARIABLE)
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if(NOT CUDA_GPU_DETECT_OUTPUT)
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if(CMAKE_CUDA_COMPILER_LOADED) # CUDA as a language
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set(file "${PROJECT_BINARY_DIR}/detect_cuda_compute_capabilities.cu")
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else()
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set(file "${PROJECT_BINARY_DIR}/detect_cuda_compute_capabilities.cpp")
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endif()
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file(WRITE ${file} ""
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"#include <cuda_runtime.h>\n"
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"#include <cstdio>\n"
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"int main()\n"
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"{\n"
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" int count = 0;\n"
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" if (cudaSuccess != cudaGetDeviceCount(&count)) return -1;\n"
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" if (count == 0) return -1;\n"
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" for (int device = 0; device < count; ++device)\n"
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" {\n"
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" cudaDeviceProp prop;\n"
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" if (cudaSuccess == cudaGetDeviceProperties(&prop, device))\n"
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" std::printf(\"%d.%d \", prop.major, prop.minor);\n"
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" }\n"
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" return 0;\n"
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"}\n")
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if(CMAKE_CUDA_COMPILER_LOADED) # CUDA as a language
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try_run(run_result compile_result ${PROJECT_BINARY_DIR} ${file}
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RUN_OUTPUT_VARIABLE compute_capabilities)
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else()
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try_run(run_result compile_result ${PROJECT_BINARY_DIR} ${file}
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CMAKE_FLAGS "-DINCLUDE_DIRECTORIES=${CUDA_INCLUDE_DIRS}"
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LINK_LIBRARIES ${CUDA_LIBRARIES}
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RUN_OUTPUT_VARIABLE compute_capabilities)
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endif()
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# Filter unrelated content out of the output.
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string(REGEX MATCHALL "[0-9]+\\.[0-9]+" compute_capabilities "${compute_capabilities}")
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if(run_result EQUAL 0)
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string(REPLACE "2.1" "2.1(2.0)" compute_capabilities "${compute_capabilities}")
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set(CUDA_GPU_DETECT_OUTPUT ${compute_capabilities}
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CACHE INTERNAL "Returned GPU architectures from detect_gpus tool" FORCE)
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endif()
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endif()
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if(NOT CUDA_GPU_DETECT_OUTPUT)
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message(STATUS "Automatic GPU detection failed. Building for common architectures.")
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set(${OUT_VARIABLE} ${CUDA_COMMON_GPU_ARCHITECTURES} PARENT_SCOPE)
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else()
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# Filter based on CUDA version supported archs
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set(CUDA_GPU_DETECT_OUTPUT_FILTERED "")
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separate_arguments(CUDA_GPU_DETECT_OUTPUT)
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foreach(ITEM IN ITEMS ${CUDA_GPU_DETECT_OUTPUT})
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if(CUDA_LIMIT_GPU_ARCHITECTURE AND ITEM VERSION_GREATER_EQUAL CUDA_LIMIT_GPU_ARCHITECTURE)
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list(GET CUDA_COMMON_GPU_ARCHITECTURES -1 NEWITEM)
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string(APPEND CUDA_GPU_DETECT_OUTPUT_FILTERED " ${NEWITEM}")
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else()
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string(APPEND CUDA_GPU_DETECT_OUTPUT_FILTERED " ${ITEM}")
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endif()
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endforeach()
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set(${OUT_VARIABLE} ${CUDA_GPU_DETECT_OUTPUT_FILTERED} PARENT_SCOPE)
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endif()
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endfunction()
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################################################################################################
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# Function for selecting GPU arch flags for nvcc based on CUDA architectures from parameter list
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# Usage:
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# SELECT_NVCC_ARCH_FLAGS(out_variable [list of CUDA compute archs])
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function(CUDA_SELECT_NVCC_ARCH_FLAGS out_variable)
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set(CUDA_ARCH_LIST "${ARGN}")
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if("X${CUDA_ARCH_LIST}" STREQUAL "X" )
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set(CUDA_ARCH_LIST "Auto")
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endif()
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set(cuda_arch_bin)
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set(cuda_arch_ptx)
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if("${CUDA_ARCH_LIST}" STREQUAL "All")
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set(CUDA_ARCH_LIST ${CUDA_KNOWN_GPU_ARCHITECTURES})
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elseif("${CUDA_ARCH_LIST}" STREQUAL "Common")
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set(CUDA_ARCH_LIST ${CUDA_COMMON_GPU_ARCHITECTURES})
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elseif("${CUDA_ARCH_LIST}" STREQUAL "Auto")
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CUDA_DETECT_INSTALLED_GPUS(CUDA_ARCH_LIST)
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message(STATUS "Autodetected CUDA architecture(s): ${CUDA_ARCH_LIST}")
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endif()
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# Now process the list and look for names
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string(REGEX REPLACE "[ \t]+" ";" CUDA_ARCH_LIST "${CUDA_ARCH_LIST}")
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list(REMOVE_DUPLICATES CUDA_ARCH_LIST)
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foreach(arch_name ${CUDA_ARCH_LIST})
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set(arch_bin)
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set(arch_ptx)
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set(add_ptx FALSE)
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# Check to see if we are compiling PTX
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if(arch_name MATCHES "(.*)\\+PTX$")
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set(add_ptx TRUE)
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set(arch_name ${CMAKE_MATCH_1})
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endif()
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if(arch_name MATCHES "^([0-9]\\.[0-9](\\([0-9]\\.[0-9]\\))?)$")
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set(arch_bin ${CMAKE_MATCH_1})
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set(arch_ptx ${arch_bin})
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else()
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# Look for it in our list of known architectures
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if(${arch_name} STREQUAL "Fermi")
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set(arch_bin 2.0 "2.1(2.0)")
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elseif(${arch_name} STREQUAL "Kepler+Tegra")
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set(arch_bin 3.2)
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elseif(${arch_name} STREQUAL "Kepler+Tesla")
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set(arch_bin 3.7)
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elseif(${arch_name} STREQUAL "Kepler")
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set(arch_bin 3.0 3.5)
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set(arch_ptx 3.5)
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elseif(${arch_name} STREQUAL "Maxwell+Tegra")
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set(arch_bin 5.3)
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elseif(${arch_name} STREQUAL "Maxwell")
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set(arch_bin 5.0 5.2)
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set(arch_ptx 5.2)
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elseif(${arch_name} STREQUAL "Pascal")
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set(arch_bin 6.0 6.1)
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set(arch_ptx 6.1)
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elseif(${arch_name} STREQUAL "Volta")
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set(arch_bin 7.0 7.0)
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set(arch_ptx 7.0)
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elseif(${arch_name} STREQUAL "Turing")
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set(arch_bin 7.5)
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set(arch_ptx 7.5)
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else()
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message(SEND_ERROR "Unknown CUDA Architecture Name ${arch_name} in CUDA_SELECT_NVCC_ARCH_FLAGS")
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endif()
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endif()
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if(NOT arch_bin)
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message(SEND_ERROR "arch_bin wasn't set for some reason")
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endif()
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list(APPEND cuda_arch_bin ${arch_bin})
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if(add_ptx)
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if (NOT arch_ptx)
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set(arch_ptx ${arch_bin})
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endif()
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list(APPEND cuda_arch_ptx ${arch_ptx})
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endif()
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endforeach()
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# remove dots and convert to lists
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string(REGEX REPLACE "\\." "" cuda_arch_bin "${cuda_arch_bin}")
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string(REGEX REPLACE "\\." "" cuda_arch_ptx "${cuda_arch_ptx}")
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string(REGEX MATCHALL "[0-9()]+" cuda_arch_bin "${cuda_arch_bin}")
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string(REGEX MATCHALL "[0-9]+" cuda_arch_ptx "${cuda_arch_ptx}")
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if(cuda_arch_bin)
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list(REMOVE_DUPLICATES cuda_arch_bin)
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endif()
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if(cuda_arch_ptx)
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list(REMOVE_DUPLICATES cuda_arch_ptx)
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endif()
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set(nvcc_flags "")
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set(nvcc_archs_readable "")
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# Tell NVCC to add binaries for the specified GPUs
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foreach(arch ${cuda_arch_bin})
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if(arch MATCHES "([0-9]+)\\(([0-9]+)\\)")
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# User explicitly specified ARCH for the concrete CODE
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list(APPEND nvcc_flags -gencode arch=compute_${CMAKE_MATCH_2},code=sm_${CMAKE_MATCH_1})
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list(APPEND nvcc_archs_readable sm_${CMAKE_MATCH_1})
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else()
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# User didn't explicitly specify ARCH for the concrete CODE, we assume ARCH=CODE
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list(APPEND nvcc_flags -gencode arch=compute_${arch},code=sm_${arch})
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list(APPEND nvcc_archs_readable sm_${arch})
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endif()
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endforeach()
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# Tell NVCC to add PTX intermediate code for the specified architectures
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foreach(arch ${cuda_arch_ptx})
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list(APPEND nvcc_flags -gencode arch=compute_${arch},code=compute_${arch})
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list(APPEND nvcc_archs_readable compute_${arch})
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endforeach()
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string(REPLACE ";" " " nvcc_archs_readable "${nvcc_archs_readable}")
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set(${out_variable} ${nvcc_flags} PARENT_SCOPE)
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set(${out_variable}_readable ${nvcc_archs_readable} PARENT_SCOPE)
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endfunction()
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