alamb commented on issue #1041: URL: https://github.com/apache/arrow-datafusion/issues/1041#issuecomment-925701520
As @jorgecarleitao and @Dandandan have mentioned, the "simd" feature is somewhat misleadingly named, as it may imply that SIMD instructions (e.g. AVX2, etc) are not used unless that feature is enabled, which is not the case. Normally the rust compiler will attempt to use SIMD instructions automatically (so called "auto vectorization"), and the suggestion at the link @Dandandan mentions of using `RUSTFLAGS='-C target-cpu=native'` is probably your best bet to take full advantage of those instructions. The "simd" feature enables several handwritten arrow kernels that explicitly use SIMD intrinsics rather than relying on the rust compiler to do so. -- 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]
