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CMakeLists.txt
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CMakeLists.txt
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# Copyright (c) Microsoft Corporation.
# Licensed under the MIT license.
set(MSCCLPP_MAJOR "0")
set(MSCCLPP_MINOR "5")
set(MSCCLPP_PATCH "2")
set(MSCCLPP_SOVERSION ${MSCCLPP_MAJOR})
set(MSCCLPP_VERSION "${MSCCLPP_MAJOR}.${MSCCLPP_MINOR}.${MSCCLPP_PATCH}")
cmake_minimum_required(VERSION 3.25)
enable_language(CXX)
list(APPEND CMAKE_MODULE_PATH ${CMAKE_CURRENT_SOURCE_DIR}/cmake)
# Options
option(ENABLE_TRACE "Enable tracing" OFF)
option(BUILD_TESTS "Build tests" ON)
option(BUILD_PYTHON_BINDINGS "Build Python bindings" ON)
option(BUILD_APPS_NCCL "Build NCCL interfaces" ON)
option(USE_CUDA "Use NVIDIA/CUDA." OFF)
option(USE_ROCM "Use AMD/ROCm." OFF)
option(BYPASS_GPU_CHECK "Bypass GPU check." OFF)
if(BYPASS_GPU_CHECK)
if(USE_CUDA)
message("Bypassing GPU check: using NVIDIA/CUDA.")
find_package(CUDAToolkit REQUIRED)
elseif(USE_ROCM)
message("Bypassing GPU check: using AMD/ROCm.")
# Temporal fix for rocm5.6
set(CMAKE_PREFIX_PATH "/opt/rocm;${CMAKE_PREFIX_PATH}")
find_package(hip REQUIRED)
else()
message(FATAL_ERROR "Bypassing GPU check: neither NVIDIA/CUDA nor AMD/ROCm is specified.")
endif()
else()
# Detect GPUs
include(CheckNvidiaGpu)
include(CheckAmdGpu)
if(NVIDIA_FOUND AND AMD_FOUND)
message("Detected NVIDIA/CUDA and AMD/ROCm: prioritizing NVIDIA/CUDA.")
set(USE_CUDA ON)
set(USE_ROCM OFF)
elseif(NVIDIA_FOUND)
message("Detected NVIDIA/CUDA.")
set(USE_CUDA ON)
set(USE_ROCM OFF)
elseif(AMD_FOUND)
message("Detected AMD/ROCm.")
set(USE_CUDA OFF)
set(USE_ROCM ON)
else()
message(FATAL_ERROR "Neither NVIDIA/CUDA nor AMD/ROCm is found.")
endif()
endif()
# Declare project
set(CMAKE_CXX_STANDARD 17)
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -Wextra")
if(USE_CUDA)
set(CMAKE_CUDA_STANDARD 17)
set(CMAKE_CUDA_FLAGS "${CMAKE_CUDA_FLAGS} -Xcompiler -Wall,-Wextra")
project(mscclpp LANGUAGES CXX CUDA)
# CUDA 11 or higher is required
if(CUDAToolkit_VERSION_MAJOR LESS 11)
message(FATAL_ERROR "CUDA 11 or higher is required but detected ${CUDAToolkit_VERSION}")
endif()
# Set CUDA architectures
if(CUDAToolkit_VERSION_MAJOR GREATER_EQUAL 11)
set(CMAKE_CUDA_ARCHITECTURES 80)
endif()
# Hopper architecture
if(CUDAToolkit_VERSION_MAJOR GREATER_EQUAL 12)
set(CMAKE_CUDA_ARCHITECTURES ${CMAKE_CUDA_ARCHITECTURES} 90)
endif()
set(GPU_LIBRARIES CUDA::cudart CUDA::cuda_driver)
set(GPU_INCLUDE_DIRS ${CUDAToolkit_INCLUDE_DIRS})
else()
set(CMAKE_HIP_STANDARD 17)
set(CMAKE_HIP_FLAGS "${CMAKE_HIP_FLAGS} -Wall -Wextra")
project(mscclpp LANGUAGES CXX)
set(CMAKE_HIP_ARCHITECTURES gfx90a gfx941 gfx942)
set(GPU_LIBRARIES hip::device)
set(GPU_INCLUDE_DIRS ${hip_INCLUDE_DIRS})
endif()
# Format targets
include(${PROJECT_SOURCE_DIR}/cmake/AddFormatTargets.cmake)
# Find ibverbs and libnuma
find_package(IBVerbs)
find_package(NUMA REQUIRED)
find_package(Threads REQUIRED)
include(FetchContent)
FetchContent_Declare(json URL https://github.com/nlohmann/json/releases/download/v3.11.3/json.tar.xz)
FetchContent_MakeAvailable(json)
add_library(mscclpp_obj OBJECT)
target_include_directories(mscclpp_obj
SYSTEM PRIVATE
${GPU_INCLUDE_DIRS}
${NUMA_INCLUDE_DIRS})
target_link_libraries(mscclpp_obj PRIVATE ${GPU_LIBRARIES} ${NUMA_LIBRARIES} nlohmann_json::nlohmann_json Threads::Threads dl)
if(IBVERBS_FOUND)
target_include_directories(mscclpp_obj SYSTEM PRIVATE ${IBVERBS_INCLUDE_DIRS})
target_link_libraries(mscclpp_obj PRIVATE ${IBVERBS_LIBRARIES})
target_compile_definitions(mscclpp_obj PUBLIC USE_IBVERBS)
endif()
set_target_properties(mscclpp_obj PROPERTIES LINKER_LANGUAGE CXX POSITION_INDEPENDENT_CODE 1 VERSION ${MSCCLPP_VERSION} SOVERSION ${MSCCLPP_SOVERSION})
if(USE_CUDA)
target_compile_definitions(mscclpp_obj PRIVATE USE_CUDA)
elseif(USE_ROCM)
target_compile_definitions(mscclpp_obj PRIVATE USE_ROCM)
endif()
if(ENABLE_TRACE)
target_compile_definitions(mscclpp_obj PRIVATE ENABLE_TRACE)
endif()
if(NPKIT_FLAGS)
target_compile_definitions(mscclpp_obj PRIVATE ${NPKIT_FLAGS})
endif()
# libmscclpp
add_library(mscclpp SHARED)
target_link_libraries(mscclpp PUBLIC mscclpp_obj)
set_target_properties(mscclpp PROPERTIES VERSION ${MSCCLPP_VERSION} SOVERSION ${MSCCLPP_SOVERSION})
add_library(mscclpp_static STATIC)
target_link_libraries(mscclpp_static PUBLIC mscclpp_obj)
set_target_properties(mscclpp_static PROPERTIES VERSION ${MSCCLPP_VERSION} SOVERSION ${MSCCLPP_SOVERSION})
add_subdirectory(include)
add_subdirectory(src)
if("${INSTALL_PREFIX}" STREQUAL "")
set(INSTALL_PREFIX "./")
endif()
install(TARGETS mscclpp_obj
FILE_SET HEADERS DESTINATION ${INSTALL_PREFIX}/include)
install(TARGETS mscclpp
LIBRARY DESTINATION ${INSTALL_PREFIX}/lib)
install(TARGETS mscclpp_static
ARCHIVE DESTINATION ${INSTALL_PREFIX}/lib)
# Tests
if(BUILD_TESTS)
enable_testing() # Called here to allow ctest from the build directory
add_subdirectory(test)
endif()
# Python bindings
if(BUILD_PYTHON_BINDINGS)
add_subdirectory(python)
endif()
# NCCL interfaces
if(BUILD_APPS_NCCL)
add_subdirectory(apps/nccl)
endif()