[GitHub] [arrow] Dandandan edited a comment on pull request #10002: ARROW-12343: [Rust] Support auto-vectorization for min/max

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Dandandan edited a comment on pull request #10002:
URL: https://github.com/apache/arrow/pull/10002#issuecomment-818061520


   @jorgecarleitao 
   
   It definitely not the same as when compiling with the `simd` feature, that is about 4 as fast as this version (and ~5x as fast as the master branch). This is with `--features simd`:
   
   ```
   min 512                 time:   [232.68 ns 233.24 ns 233.83 ns]                    
                           change: [-75.848% -75.631% -75.432%] (p = 0.00 < 0.05)
                           Performance has improved.
   Found 11 outliers among 100 measurements (11.00%)
     5 (5.00%) low mild
     1 (1.00%) high mild
     5 (5.00%) high severe
   
   max 512                 time:   [229.37 ns 229.71 ns 230.13 ns]                    
                           change: [-75.484% -75.392% -75.303%] (p = 0.00 < 0.05)
                           Performance has improved.
   Found 18 outliers among 100 measurements (18.00%)
     11 (11.00%) high mild
     7 (7.00%) high severe
   ```


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