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CUDA: update compilation flags for improved performance #1099

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CUDA: update compilation flags for improved performance #1099

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5a9dc3e
CUDA: update compilation flags for improved performance
royshil Feb 3, 2025
9172f86
CMake: add option for CUDA compile threads and update flags
royshil Feb 3, 2025
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1 change: 1 addition & 0 deletions CMakeLists.txt
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Original file line number Diff line number Diff line change
Expand Up @@ -152,6 +152,7 @@ option(GGML_CUDA_NO_PEER_COPY "ggml: do not use peer to peer copie
option(GGML_CUDA_NO_VMM "ggml: do not try to use CUDA VMM" OFF)
option(GGML_CUDA_FA_ALL_QUANTS "ggml: compile all quants for FlashAttention" OFF)
option(GGML_CUDA_GRAPHS "ggml: use CUDA graphs (llama.cpp only)" ${GGML_CUDA_GRAPHS_DEFAULT})
option(GGML_CUDA_COMPILE_THREADS "ggml: CUDA compile threads (0 - auto)" 0)

option(GGML_HIP "ggml: use HIP" OFF)
option(GGML_HIP_GRAPHS "ggml: use HIP graph, experimental, slow" OFF)
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2 changes: 1 addition & 1 deletion src/ggml-cuda/CMakeLists.txt
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Expand Up @@ -96,7 +96,7 @@ if (CUDAToolkit_FOUND)

set(CUDA_CXX_FLAGS "")

set(CUDA_FLAGS -use_fast_math)
set(CUDA_FLAGS -use_fast_math --threads=${GGML_CUDA_COMPILE_THREADS} --split-compile=${GGML_CUDA_COMPILE_THREADS})

if (GGML_FATAL_WARNINGS)
list(APPEND CUDA_FLAGS -Werror all-warnings)
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