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[Bugfix] Flash attention arches not getting set properly (#9062)

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Lucas Wilkinson 2024-10-04 11:43:15 -04:00 committed by GitHub
parent 3d826d2c52
commit 22482e495e
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1 changed files with 11 additions and 0 deletions
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CMakeLists.txt
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@ -482,6 +482,17 @@ if (NOT VLLM_TARGET_DEVICE STREQUAL "cuda")
return() return()
endif () endif ()
# vLLM flash attention requires VLLM_GPU_ARCHES to contain the set of target
# arches in the CMake syntax (75-real, 89-virtual, etc), since we clear the
# arches in the CUDA case (and instead set the gencodes on a per file basis)
# we need to manually set VLLM_GPU_ARCHES here.
if(VLLM_GPU_LANG STREQUAL "CUDA")
foreach(_ARCH ${CUDA_ARCHS})
string(REPLACE "." "" _ARCH "${_ARCH}")
list(APPEND VLLM_GPU_ARCHES "${_ARCH}-real")
endforeach()
endif()
# #
# Build vLLM flash attention from source # Build vLLM flash attention from source
# #