andygrove commented on PR #6457:
URL: 
https://github.com/apache/datafusion-comet/pull/6457#issuecomment-5917125638

   Added `benches/min_max.rs` and `benches/greatest_least.rs` in b15afcfec, and 
the description now points to them. Before timing, each checks that Comet and 
DataFusion return the same values on the inputs without NaNs, and the `min_max` 
module docs say why the grouped case is the one that cannot vectorize. On an M3 
Max they match the description within noise: ungrouped `max` 3.3 µs against 5.3 
µs, `max` into 1024 groups 32.0 µs against 24.1 µs (43.4 µs for DataFusion with 
10% NaN), and `greatest` of three columns 3.9 µs against 37.0 µs.
   


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