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|
cmake_minimum_required(VERSION 3.18) # for CMAKE_CUDA_ARCHITECTURES
find_package(CUDAToolkit)
if (CUDAToolkit_FOUND)
message(STATUS "CUDA Toolkit found")
if (NOT DEFINED CMAKE_CUDA_ARCHITECTURES)
# native == GPUs available at build time
# 50 == Maxwell, lowest CUDA 12 standard
# 60 == P100, FP16 CUDA intrinsics
# 61 == Pascal, __dp4a instruction (per-byte integer dot product)
# 70 == V100, FP16 tensor cores
# 75 == Turing, int8 tensor cores
# 80 == Ampere, asynchronous data loading, faster tensor core instructions
# 86 == RTX 3000, needs CUDA v11.1
# 89 == RTX 4000, needs CUDA v11.8
# 120 == Blackwell, needs CUDA v12.8, FP4 tensor cores
#
# XX-virtual == compile CUDA code as PTX, do JIT compilation to binary code on first run
# XX-real == compile CUDA code as device code for this specific architecture
# no suffix == compile as both PTX and device code
#
# The default behavior for a non-native is to build virtual architectures as needed to cover all features needed
# for best performance and to also build real architectures for the most commonly used GPUs.
if (GGML_NATIVE AND CUDAToolkit_VERSION VERSION_GREATER_EQUAL "11.6" AND CMAKE_VERSION VERSION_GREATER_EQUAL "3.24")
set(CMAKE_CUDA_ARCHITECTURES "native")
else()
if (CUDAToolkit_VERSION VERSION_LESS "13")
list(APPEND CMAKE_CUDA_ARCHITECTURES 50-virtual 61-virtual 70-virtual)
endif ()
list(APPEND CMAKE_CUDA_ARCHITECTURES 75-virtual 80-virtual 86-real)
if (CUDAToolkit_VERSION VERSION_GREATER_EQUAL "11.8")
list(APPEND CMAKE_CUDA_ARCHITECTURES 89-real)
endif()
if (CUDAToolkit_VERSION VERSION_GREATER_EQUAL "12.8")
# The CUDA architecture 120f-virtual would in principle work for Blackwell support
# but the newly added "f" suffix conflicted with a preexising regex for validating CUDA architectures in CMake.
# So either a recent CMake version or one with the backported fix is needed.
# The following versions should work:
# - CMake >= v3.31.8 && CMake < v4.0.0
# - CMake >= v4.0.2
# This is NOT documented in the CMake release notes,
# check Modules/Internal/CMakeCUDAArchitecturesValidate.cmake in the CMake git repository instead.
# However, the architectures 120a-real and 121a-real should work with basically any CMake version and
# until the release of e.g. Rubin there is no benefit to shipping virtual architectures for Blackwell.
list(APPEND CMAKE_CUDA_ARCHITECTURES 120a-real)
endif()
if (CUDAToolkit_VERSION VERSION_GREATER_EQUAL "12.9")
list(APPEND CMAKE_CUDA_ARCHITECTURES 121a-real)
endif()
endif()
endif()
enable_language(CUDA)
# TODO: Remove once CCCL 3.2 has been released and bundled with CUDA Toolkit
if (GGML_CUDA_CUB_3DOT2)
include(FetchContent)
FetchContent_Declare(
CCCL
GIT_REPOSITORY https://github.com/nvidia/cccl.git
GIT_TAG v3.2.0
GIT_SHALLOW TRUE
)
FetchContent_MakeAvailable(CCCL)
endif()
# Replace any plain 12X CUDA architectures with their "architecture-specific" equivalents 12Xa.
# 12X is forwards-compatible, 12Xa is not.
# Notably the Blackwell FP4 tensor core instructions are not forwards compatible and therefore need 12Xa.
# But while 12X vs. 12Xa can be checked in device code there is (to my knowledge) no easy way to do the same check in host code.
# So for now just replace all instances of 12X with 12Xa, this should be fine until Rubin is released.
foreach(ARCHS IN ITEMS CMAKE_CUDA_ARCHITECTURES CMAKE_CUDA_ARCHITECTURES_NATIVE)
set(FIXED_ARCHS "")
foreach(ARCH IN LISTS ${ARCHS})
if (ARCH MATCHES "^12[0-9](-real|-virtual)?$")
string(REGEX REPLACE "^(12[0-9])((-real|-virtual)?)$" "\\1a\\2" FIXED_ARCH ${ARCH})
message(STATUS "Replacing ${ARCH} in ${ARCHS} with ${FIXED_ARCH}")
list(APPEND FIXED_ARCHS "${FIXED_ARCH}")
else()
list(APPEND FIXED_ARCHS "${ARCH}")
endif()
endforeach()
set(${ARCHS} ${FIXED_ARCHS})
endforeach()
# If we try to compile a "native" build it will use the 12X architectures and fail.
# So we should instead use the native architectures as determined by CMake after replacing 12X with 12Xa.
# But if at the time of the build no GPUs are connected at all CMAKE_CUDA_ARCHITECTURES will contain garbage that we should not use.
if (CMAKE_CUDA_ARCHITECTURES STREQUAL "native" AND CMAKE_CUDA_ARCHITECTURES_NATIVE MATCHES "^[0-9]+(a|f)?(-real|-virtual)?(;[0-9]+(a|f)?(-real|-virtual)?|;)*$")
set(CMAKE_CUDA_ARCHITECTURES ${CMAKE_CUDA_ARCHITECTURES_NATIVE})
endif()
message(STATUS "Using CMAKE_CUDA_ARCHITECTURES=${CMAKE_CUDA_ARCHITECTURES} CMAKE_CUDA_ARCHITECTURES_NATIVE=${CMAKE_CUDA_ARCHITECTURES_NATIVE}")
file(GLOB GGML_HEADERS_CUDA "*.cuh")
list(APPEND GGML_HEADERS_CUDA "../../include/ggml-cuda.h")
file(GLOB GGML_SOURCES_CUDA "*.cu")
file(GLOB SRCS "template-instances/fattn-tile*.cu")
list(APPEND GGML_SOURCES_CUDA ${SRCS})
file(GLOB SRCS "template-instances/fattn-mma*.cu")
list(APPEND GGML_SOURCES_CUDA ${SRCS})
file(GLOB SRCS "template-instances/mmq*.cu")
list(APPEND GGML_SOURCES_CUDA ${SRCS})
file(GLOB SRCS "template-instances/mmf*.cu")
list(APPEND GGML_SOURCES_CUDA ${SRCS})
if (GGML_CUDA_FA_ALL_QUANTS)
file(GLOB SRCS "template-instances/fattn-vec*.cu")
list(APPEND GGML_SOURCES_CUDA ${SRCS})
add_compile_definitions(GGML_CUDA_FA_ALL_QUANTS)
else()
file(GLOB SRCS "template-instances/fattn-vec*q4_0-q4_0.cu")
list(APPEND GGML_SOURCES_CUDA ${SRCS})
file(GLOB SRCS "template-instances/fattn-vec*q8_0-q8_0.cu")
list(APPEND GGML_SOURCES_CUDA ${SRCS})
file(GLOB SRCS "template-instances/fattn-vec*f16-f16.cu")
list(APPEND GGML_SOURCES_CUDA ${SRCS})
endif()
ggml_add_backend_library(ggml-cuda
${GGML_HEADERS_CUDA}
${GGML_SOURCES_CUDA}
)
add_compile_definitions(GGML_CUDA_PEER_MAX_BATCH_SIZE=${GGML_CUDA_PEER_MAX_BATCH_SIZE})
if (GGML_CUDA_GRAPHS)
add_compile_definitions(GGML_CUDA_USE_GRAPHS)
endif()
if (GGML_CUDA_FORCE_MMQ)
add_compile_definitions(GGML_CUDA_FORCE_MMQ)
endif()
if (GGML_CUDA_FORCE_CUBLAS)
add_compile_definitions(GGML_CUDA_FORCE_CUBLAS)
endif()
if (GGML_CUDA_NO_VMM)
add_compile_definitions(GGML_CUDA_NO_VMM)
endif()
if (NOT GGML_CUDA_FA)
add_compile_definitions(GGML_CUDA_NO_FA)
endif()
if (GGML_CUDA_NO_PEER_COPY)
add_compile_definitions(GGML_CUDA_NO_PEER_COPY)
endif()
if (GGML_STATIC)
if (WIN32)
# As of 12.3.1 CUDA Toolkit for Windows does not offer a static cublas library
target_link_libraries(ggml-cuda PRIVATE CUDA::cudart_static CUDA::cublas)
else ()
if (GGML_CUDA_CUB_3DOT2)
target_link_libraries(ggml-cuda PRIVATE CCCL::CCCL)
endif()
if (CUDAToolkit_VERSION VERSION_GREATER_EQUAL "10.1")
target_link_libraries(ggml-cuda PRIVATE CUDA::cudart_static CUDA::cublas_static CUDA::cublasLt_static)
else()
target_link_libraries(ggml-cuda PRIVATE CUDA::cudart_static CUDA::cublas_static)
endif()
endif()
else()
if (GGML_CUDA_CUB_3DOT2)
target_link_libraries(ggml-cuda PRIVATE CCCL::CCCL)
endif()
target_link_libraries(ggml-cuda PRIVATE CUDA::cudart CUDA::cublas)
endif()
if (GGML_CUDA_NO_VMM)
# No VMM requested, no need to link directly with the cuda driver lib (libcuda.so)
else()
target_link_libraries(ggml-cuda PRIVATE CUDA::cuda_driver)
endif()
set(CUDA_CXX_FLAGS "")
set(CUDA_FLAGS -use_fast_math -extended-lambda)
if (GGML_CUDA_DEBUG)
list(APPEND CUDA_FLAGS -lineinfo)
add_compile_definitions(GGML_CUDA_DEBUG)
endif()
if (CUDAToolkit_VERSION VERSION_GREATER_EQUAL "12.8")
# Options are:
# - none (not recommended)
# - speed (nvcc's default)
# - balance
# - size
list(APPEND CUDA_FLAGS -compress-mode=${GGML_CUDA_COMPRESSION_MODE})
endif()
if (GGML_FATAL_WARNINGS)
list(APPEND CUDA_FLAGS -Werror all-warnings)
endif()
if (GGML_ALL_WARNINGS AND NOT MSVC)
set(NVCC_CMD ${CMAKE_CUDA_COMPILER} .c)
if (NOT CMAKE_CUDA_HOST_COMPILER STREQUAL "")
list(APPEND NVCC_CMD -ccbin ${CMAKE_CUDA_HOST_COMPILER})
endif()
execute_process(
COMMAND ${NVCC_CMD} -Xcompiler --version
OUTPUT_VARIABLE CUDA_CCFULLVER
ERROR_QUIET
)
if (NOT CUDA_CCFULLVER MATCHES clang)
set(CUDA_CCID "GNU")
execute_process(
COMMAND ${NVCC_CMD} -Xcompiler "-dumpfullversion -dumpversion"
OUTPUT_VARIABLE CUDA_CCVER
ERROR_QUIET
OUTPUT_STRIP_TRAILING_WHITESPACE
)
else()
if (CUDA_CCFULLVER MATCHES Apple)
set(CUDA_CCID "AppleClang")
else()
set(CUDA_CCID "Clang")
endif()
string(REGEX REPLACE "^.* version ([0-9.]*).*$" "\\1" CUDA_CCVER ${CUDA_CCFULLVER})
endif()
message(STATUS "CUDA host compiler is ${CUDA_CCID} ${CUDA_CCVER}")
ggml_get_flags(${CUDA_CCID} ${CUDA_CCVER})
list(APPEND CUDA_CXX_FLAGS ${CXX_FLAGS} ${GF_CXX_FLAGS}) # This is passed to -Xcompiler later
endif()
if (NOT MSVC)
list(APPEND CUDA_CXX_FLAGS -Wno-pedantic)
else()
# CCCL 3.2 onwards will require a cpp-standard-compliant preprocessor for MSVC
# https://github.com/NVIDIA/cccl/pull/6827
list(APPEND CUDA_CXX_FLAGS /Zc:preprocessor)
endif()
list(JOIN CUDA_CXX_FLAGS " " CUDA_CXX_FLAGS_JOINED) # pass host compiler flags as a single argument
if (NOT CUDA_CXX_FLAGS_JOINED STREQUAL "")
list(APPEND CUDA_FLAGS -Xcompiler ${CUDA_CXX_FLAGS_JOINED})
endif()
target_compile_options(ggml-cuda PRIVATE "$<$<COMPILE_LANGUAGE:CUDA>:${CUDA_FLAGS}>")
else()
message(FATAL_ERROR "CUDA Toolkit not found")
endif()
|
