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Posted to github@arrow.apache.org by GitBox <gi...@apache.org> on 2021/01/31 13:42:49 UTC

[GitHub] [arrow] Dandandan commented on pull request #8665: ARROW-10589: [Rust] Implement AVX-512 bit and operation

Dandandan commented on pull request #8665:
URL: https://github.com/apache/arrow/pull/8665#issuecomment-770384503


   @vertexclique I was actually wondering whether AVX-512 is really faster than compiling the kernel with "simd" and the right rustflags , i.e. `RUSTFLAGS='-C target-cpu=native`?
   I don't have a `AVX-512`-enabled cpu to try this out, but I would have the same intuition as @jhorstmann that packed simd should generate similar `AVX-512` instructions?
   Would be nice maybe to revisit this once to see whether we need to maintain 2 different implementations, especially when it's going to be in `std` / stable.


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