[CMake] Use ccache as CMAKE_CUDA_COMPILER_LAUNCHER #16341
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For older versions of `ccache` that do not support `nvcc`, this has no effect. For newer versions of `ccache`, this enables caching the compiled `nvcc` outputs. This was tested using `ccache` versions 3.7.7 (does not cache `nvcc` output) and 4.8.3 (caches `nvcc` output). This is primarily intended to reduce compilation time of cutlass kernels, which can take several minutes after switching branches.
csullivan
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Jan 3, 2024
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Many many thanks! Very happy to see the unnecessary lengthy nvcc spawned ptxas recompiles of cutlass kernels for different archs go away
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For older versions of
ccachethat do not supportnvcc, this has no effect. For newer versions ofccache, this enables caching the compilednvccoutputs. This was tested usingccacheversions 3.7.7 (does not cachenvccoutput) and 4.8.3 (cachesnvccoutput).This is primarily intended to reduce compilation time of cutlass kernels, which can take several minutes after switching branches.