Files
vllm/cmake/external_projects/qutlass.cmake
T
2026-06-13 22:09:20 -07:00

115 lines
4.0 KiB
CMake

include(FetchContent)
set(CUTLASS_INCLUDE_DIR "${CUTLASS_INCLUDE_DIR}" CACHE PATH "Path to CUTLASS include/ directory")
if(DEFINED ENV{QUTLASS_SRC_DIR})
set(QUTLASS_SRC_DIR $ENV{QUTLASS_SRC_DIR})
endif()
if(QUTLASS_SRC_DIR)
FetchContent_Declare(
qutlass
SOURCE_DIR ${QUTLASS_SRC_DIR}
CONFIGURE_COMMAND ""
BUILD_COMMAND ""
)
else()
FetchContent_Declare(
qutlass
GIT_REPOSITORY https://github.com/IST-DASLab/qutlass.git
GIT_TAG 830d2c4537c7396e14a02a46fbddd18b5d107c65
GIT_PROGRESS TRUE
CONFIGURE_COMMAND ""
BUILD_COMMAND ""
)
endif()
FetchContent_Populate(qutlass)
if(NOT qutlass_SOURCE_DIR)
message(FATAL_ERROR "[QUTLASS] source directory could not be resolved.")
endif()
message(STATUS "[QUTLASS] QuTLASS is available at ${qutlass_SOURCE_DIR}")
if(${CMAKE_CUDA_COMPILER_VERSION} VERSION_GREATER_EQUAL 13.0)
cuda_archs_loose_intersection(QUTLASS_SM120_ARCHS "12.0f" "${CUDA_ARCHS}")
cuda_archs_loose_intersection(QUTLASS_SM100_ARCHS "10.0f" "${CUDA_ARCHS}")
else()
cuda_archs_loose_intersection(QUTLASS_SM120_ARCHS "12.0a;12.1a" "${CUDA_ARCHS}")
cuda_archs_loose_intersection(QUTLASS_SM100_ARCHS "10.0a;10.3a" "${CUDA_ARCHS}")
endif()
# QUTLASS uses TARGET_CUDA_ARCH as a single preprocessor selector for all its
# sources. Do not compile a mixed SM100/SM120 arch list with one selector; prefer
# SM100 when both families are requested because that is the primary deployed
# target for this extension today.
if(QUTLASS_SM100_ARCHS)
set(QUTLASS_ARCHS "${QUTLASS_SM100_ARCHS}")
set(QUTLASS_TARGET_CC 100)
if(QUTLASS_SM120_ARCHS)
message(WARNING
"[QUTLASS] Both SM100 and SM120 archs were requested; selecting SM100 "
"because TARGET_CUDA_ARCH is a single compile-time selector.")
endif()
elseif(QUTLASS_SM120_ARCHS)
set(QUTLASS_ARCHS "${QUTLASS_SM120_ARCHS}")
set(QUTLASS_TARGET_CC 120)
else()
set(QUTLASS_ARCHS)
endif()
if(${CMAKE_CUDA_COMPILER_VERSION} VERSION_GREATER_EQUAL 12.8 AND QUTLASS_ARCHS)
set(QUTLASS_SOURCES
${qutlass_SOURCE_DIR}/qutlass/csrc/bindings.cpp
${qutlass_SOURCE_DIR}/qutlass/csrc/gemm.cu
${qutlass_SOURCE_DIR}/qutlass/csrc/gemm_ada.cu
${qutlass_SOURCE_DIR}/qutlass/csrc/fused_quantize_mx.cu
${qutlass_SOURCE_DIR}/qutlass/csrc/fused_quantize_nv.cu
${qutlass_SOURCE_DIR}/qutlass/csrc/fused_quantize_mx_sm100.cu
${qutlass_SOURCE_DIR}/qutlass/csrc/fused_quantize_nv_sm100.cu
)
set(QUTLASS_INCLUDES
${qutlass_SOURCE_DIR}
${qutlass_SOURCE_DIR}/qutlass
${qutlass_SOURCE_DIR}/qutlass/csrc/include
${qutlass_SOURCE_DIR}/qutlass/csrc/include/cutlass_extensions
)
if(CUTLASS_INCLUDE_DIR AND EXISTS "${CUTLASS_INCLUDE_DIR}/cutlass/cutlass.h")
list(APPEND QUTLASS_INCLUDES "${CUTLASS_INCLUDE_DIR}")
elseif(EXISTS "${qutlass_SOURCE_DIR}/qutlass/third_party/cutlass/include/cutlass/cutlass.h")
list(APPEND QUTLASS_INCLUDES "${qutlass_SOURCE_DIR}/qutlass/third_party/cutlass/include")
message(STATUS "[QUTLASS] Using QuTLASS vendored CUTLASS headers (no vLLM CUTLASS detected).")
else()
message(FATAL_ERROR "[QUTLASS] CUTLASS headers not found. "
"Set -DCUTLASS_INCLUDE_DIR=/path/to/cutlass/include")
endif()
set_gencode_flags_for_srcs(
SRCS "${QUTLASS_SOURCES}"
CUDA_ARCHS "${QUTLASS_ARCHS}"
)
target_sources(_C PRIVATE ${QUTLASS_SOURCES})
target_include_directories(_C PRIVATE ${QUTLASS_INCLUDES})
target_compile_definitions(_C PRIVATE
QUTLASS_DISABLE_PYBIND=1
TARGET_CUDA_ARCH=${QUTLASS_TARGET_CC}
)
set_property(SOURCE ${QUTLASS_SOURCES} APPEND PROPERTY COMPILE_OPTIONS
$<$<COMPILE_LANGUAGE:CUDA>:--expt-relaxed-constexpr --use_fast_math -O3>
)
else()
if("${CMAKE_CUDA_COMPILER_VERSION}" VERSION_LESS "12.8")
message(STATUS
"[QUTLASS] Skipping build: CUDA 12.8 or newer is required (found ${CMAKE_CUDA_COMPILER_VERSION}).")
else()
message(STATUS
"[QUTLASS] Skipping build: no supported arch (12.0f / 10.0f) found in "
"CUDA_ARCHS='${CUDA_ARCHS}'.")
endif()
endif()