Since the beginning of the project, SCAMP has used -march=native and the like to maximize CPU performance on the host system. Unfortunately, this also makes it so we can't redistribute SCAMP binaries or pyscamp wheels, etc.
This PR adds an optional flag to remove compiler flags which are not redistributable SCAMP_ENABLE_BINARY_DISTRIBUTON
In order to retain some semblance of performance in this mode. I have added code paths in the cpu kernel library which will execute based on runtime checks of the host CPU architecture.
In particular, there is a code path for AVX and AVX2. These paths will only be triggered if the FMA instruction is also available (this should be true the vast majority of the time).
I did not add an AVX512 path as I don't have a way to test that locally. It might be useful to add one in the future.
Since the beginning of the project, SCAMP has used -march=native and the like to maximize CPU performance on the host system. Unfortunately, this also makes it so we can't redistribute SCAMP binaries or pyscamp wheels, etc.
This PR adds an optional flag to remove compiler flags which are not redistributable
SCAMP_ENABLE_BINARY_DISTRIBUTONIn order to retain some semblance of performance in this mode. I have added code paths in the cpu kernel library which will execute based on runtime checks of the host CPU architecture.
In particular, there is a code path for AVX and AVX2. These paths will only be triggered if the FMA instruction is also available (this should be true the vast majority of the time).
I did not add an AVX512 path as I don't have a way to test that locally. It might be useful to add one in the future.