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Remove uneeded PTX code generation from libfaiss builds #3083

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Remove uneeded PTX code generation from libfaiss builds #3083

wants to merge 1 commit into from

Commits on Oct 3, 2023

  1. Remove uneeded PTX code generation from libfaiss builds. 

    The CMake CUDA Architecture value of `60` means to generate
both PTX and SASS for that arch. We only need SASS for the
architectures we support, and one PTX version for future
hardware versions.

So now we build on SASS for everything ( `60-real` ) and
use 80 as the baseline for newer archs likes 90

By removing this unneeded PTX code we can reduce
the libfaiss.a binary to 305MB from the current 484MB.
    @robertmaynard
    robertmaynard committed Oct 3, 2023
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