pitrou commented on issue #40333: URL: https://github.com/apache/arrow/issues/40333#issuecomment-1976756798
Also, `ARROW_USER_SIMD_LEVEL` is tied to `ARROW_RUNTIME_SIMD_LEVEL`. The concrete SIMD level selected is `MIN(ARROW_RUNTIME_SIMD_LEVEL, ARROW_USER_SIMD_LEVEL, CPU support)`. For example, if you compiled with `ARROW_RUNTIME_SIMD_LEVEL=AVX512` and execute on a AVX2 CPU, you will get a AVX2 code path by default. But you can force Arrow to use a SSE2 code path by setting `ARROW_USER_SIMD_LEVEL=SSE4_2`. (why it's called "user" I don't remember...) -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
