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# Known NVIDIA GPU achitectures Gloo can be compiled for.
# This list will be used for CUDA_ARCH_NAME = All option
set(gloo_known_gpu_archs "")
################################################################################
# Function for selecting GPU arch flags for nvcc based on CUDA_ARCH_NAME
# Usage:
# gloo_select_nvcc_arch_flags(out_variable)
function(gloo_select_nvcc_arch_flags out_variable)
# List of arch names
set(__archs_names "Kepler" "Maxwell" "Pascal" "Volta" "All")
set(__archs_name_default "All")
# Set CUDA_ARCH_NAME strings (so it will be seen as dropbox in the CMake GUI)
set(CUDA_ARCH_NAME ${__archs_name_default} CACHE STRING "Select target NVIDIA GPU architecture")
set_property(CACHE CUDA_ARCH_NAME PROPERTY STRINGS "" ${__archs_names})
mark_as_advanced(CUDA_ARCH_NAME)
# Verify CUDA_ARCH_NAME value
if(NOT ";${__archs_names};" MATCHES ";${CUDA_ARCH_NAME};")
string(REPLACE ";" ", " __archs_names "${__archs_names}")
message(FATAL_ERROR "Invalid CUDA_ARCH_NAME, supported values: ${__archs_names}")
endif()
if(${CUDA_ARCH_NAME} STREQUAL "Kepler")
set(__cuda_arch_bin "30 35")
elseif(${CUDA_ARCH_NAME} STREQUAL "Maxwell")
set(__cuda_arch_bin "50")
elseif(${CUDA_ARCH_NAME} STREQUAL "Pascal")
set(__cuda_arch_bin "60 61")
elseif(${CUDA_ARCH_NAME} STREQUAL "Volta")
set(__cuda_arch_bin "70")
elseif(${CUDA_ARCH_NAME} STREQUAL "All")
set(__cuda_arch_bin ${gloo_known_gpu_archs})
else()
message(FATAL_ERROR "Invalid CUDA_ARCH_NAME")
endif()
# Remove dots and convert to lists
string(REGEX REPLACE "\\." "" __cuda_arch_bin "${__cuda_arch_bin}")
string(REGEX REPLACE "\\." "" __cuda_arch_ptx "${CUDA_ARCH_PTX}")
string(REGEX MATCHALL "[0-9()]+" __cuda_arch_bin "${__cuda_arch_bin}")
string(REGEX MATCHALL "[0-9]+" __cuda_arch_ptx "${__cuda_arch_ptx}")
list(REMOVE_DUPLICATES __cuda_arch_bin)
list(REMOVE_DUPLICATES __cuda_arch_ptx)
set(__nvcc_flags "")
set(__nvcc_archs_readable "")
# Tell NVCC to add binaries for the specified GPUs
foreach(__arch ${__cuda_arch_bin})
if(__arch MATCHES "([0-9]+)\\(([0-9]+)\\)")
# User explicitly specified PTX for the concrete BIN
list(APPEND __nvcc_flags -gencode arch=compute_${CMAKE_MATCH_2},code=sm_${CMAKE_MATCH_1})
list(APPEND __nvcc_archs_readable sm_${CMAKE_MATCH_1})
else()
# User didn't explicitly specify PTX for the concrete BIN, we assume PTX=BIN
list(APPEND __nvcc_flags -gencode arch=compute_${__arch},code=sm_${__arch})
list(APPEND __nvcc_archs_readable sm_${__arch})
endif()
endforeach()
# Tell NVCC to add PTX intermediate code for the specified architectures
foreach(__arch ${__cuda_arch_ptx})
list(APPEND __nvcc_flags -gencode arch=compute_${__arch},code=compute_${__arch})
list(APPEND __nvcc_archs_readable compute_${__arch})
endforeach()
string(REPLACE ";" " " __nvcc_archs_readable "${__nvcc_archs_readable}")
set(${out_variable} ${__nvcc_flags} PARENT_SCOPE)
set(${out_variable}_readable ${__nvcc_archs_readable} PARENT_SCOPE)
endfunction()
################################################################################
# Function to append to list if specified sequence does not yet exist in list.
# Usage:
# gloo_list_append_if_unique(list_variable arg1 arg2 ...)
function(gloo_list_append_if_unique list)
list(LENGTH ARGN __match_length)
set(__match_index 0)
set(__match OFF)
foreach(__elem ${${list}})
list(GET ARGN ${__match_index} __match_elem)
if("${__elem}" STREQUAL "${__match_elem}")
MATH(EXPR __match_index "${__match_index}+1")
if(${__match_index} EQUAL ${__match_length})
set(__match ON)
break()
endif()
else()
# Mismatch; start from scratch.
# This doesn't do backtracking but shouldn't be needed either.
set(__match_index 0)
endif()
endforeach()
# Only append arguments if we didn't find a match.
if(NOT __match)
list(APPEND ${list} ${ARGN})
set(${list} ${${list}} PARENT_SCOPE)
endif()
endfunction()
################################################################################
### Non macro section
################################################################################
if(GLOO_USE_CUDA_TOOLKIT)
find_package(CUDAToolkit 7.0 REQUIRED)
set(GLOO_CUDA_VERSION ${CUDAToolkit_VERSION})
# Convert -O2 -Xcompiler="-O2 -Wall" to "-O2;-Xcompiler=-O2,-Wall"
separate_arguments(GLOO_NVCC_FLAGS UNIX_COMMAND "${CMAKE_CUDA_FLAGS}")
string(REPLACE " " "," GLOO_NVCC_FLAGS "${GLOO_NVCC_FLAGS}")
if(CUDA_USE_STATIC_CUDA_RUNTIME)
set(GLOO_CUDA_LIBRARIES CUDA::cudart_static)
else()
set(GLOO_CUDA_LIBRARIES CUDA::cudart)
endif()
else()
find_package(CUDA 7.0)
if(NOT CUDA_FOUND)
return()
endif()
set(GLOO_CUDA_VERSION ${CUDA_VERSION})
set(GLOO_NVCC_FLAGS "${CUDA_NVCC_FLAGS}")
include_directories(SYSTEM ${CUDA_INCLUDE_DIRS})
set(GLOO_CUDA_LIBRARIES ${CUDA_CUDART_LIBRARY})
# If the project including us doesn't set any -std=xxx directly, we set it to C++11 here.
set(CUDA_PROPAGATE_HOST_FLAGS OFF)
if((NOT "${GLOO_NVCC_FLAGS}" MATCHES "-std=c\\+\\+") AND (NOT "${GLOO_NVCC_FLAGS}" MATCHES "-std=gnu\\+\\+"))
if(NOT MSVC)
gloo_list_append_if_unique(GLOO_NVCC_FLAGS "-std=c++11")
endif()
endif()
mark_as_advanced(CUDA_BUILD_CUBIN CUDA_BUILD_EMULATION CUDA_VERBOSE_BUILD)
mark_as_advanced(CUDA_SDK_ROOT_DIR CUDA_SEPARABLE_COMPILATION)
endif()
set(HAVE_CUDA TRUE)
message(STATUS "CUDA detected: " ${GLOO_CUDA_VERSION})
if (${GLOO_CUDA_VERSION} LESS 9.0)
list(APPEND GLOO_NVCC_FLAGS "-D_MWAITXINTRIN_H_INCLUDED")
list(APPEND GLOO_NVCC_FLAGS "-D__STRICT_ANSI__")
else()
# nvcc may complain that sm_xx is no longer supported. Suppress the warning for now.
list(APPEND GLOO_NVCC_FLAGS "-Wno-deprecated-gpu-targets")
endif()
if(GLOO_CUDA_VERSION VERSION_LESS 8.0)
set(gloo_known_gpu_archs "30 35 50 52")
elseif(GLOO_CUDA_VERSION VERSION_LESS 9.0)
set(gloo_known_gpu_archs "30 35 50 52 60 61")
elseif(GLOO_CUDA_VERSION VERSION_LESS 10.0)
set(gloo_known_gpu_archs "30 35 50 52 60 61 70")
elseif(GLOO_CUDA_VERSION VERSION_LESS 11.0)
set(gloo_known_gpu_archs "35 50 52 60 61 70 75")
elseif(GLOO_CUDA_VERSION VERSION_LESS 12.0)
set(gloo_known_gpu_archs "35 50 52 60 61 70 75 80 86")
endif()
list(APPEND gloo_cuda_DEPENDENCY_LIBS ${GLOO_CUDA_LIBRARIES})
# Setting nvcc arch flags (or inherit if already set)
if (NOT ";${GLOO_NVCC_FLAGS};" MATCHES ";-gencode;")
gloo_select_nvcc_arch_flags(NVCC_FLAGS_EXTRA)
list(APPEND GLOO_NVCC_FLAGS ${NVCC_FLAGS_EXTRA})
message(STATUS "Added CUDA NVCC flags for: ${NVCC_FLAGS_EXTRA_readable}")
endif()
# Disable some nvcc diagnostic that apears in boost, glog, glags, opencv, etc.
foreach(diag cc_clobber_ignored integer_sign_change useless_using_declaration set_but_not_used)
gloo_list_append_if_unique(GLOO_NVCC_FLAGS -Xcudafe --diag_suppress=${diag})
endforeach()
if(NOT MSVC)
gloo_list_append_if_unique(GLOO_NVCC_FLAGS "-Xcompiler" "-fPIC")
endif()
if(GLOO_USE_CUDA_TOOLKIT)
# Convert list to space-separated string
string(REPLACE ";" " " CMAKE_CUDA_FLAGS "${GLOO_NVCC_FLAGS}")
else()
set(CUDA_NVCC_FLAGS "${GLOO_NVCC_FLAGS}")
endif()
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