uschindler commented on PR #14896: URL: https://github.com/apache/lucene/pull/14896#issuecomment-3040103885
> I get the following results on an Apple M3 (ARM). The vectorized implementation is 10x slower than the scalar impls. > > ``` > Benchmark (minScoreInclusive) (size) Mode Cnt Score Error Units > CompetitiveBenchmark.baseline 0 128 thrpt 5 39680,991 ± 1331,474 ops/ms > CompetitiveBenchmark.baseline 0.2 128 thrpt 5 12341,873 ± 2689,119 ops/ms > CompetitiveBenchmark.baseline 0.4 128 thrpt 5 11486,998 ± 1605,569 ops/ms > CompetitiveBenchmark.baseline 0.5 128 thrpt 5 12114,898 ± 1071,809 ops/ms > CompetitiveBenchmark.baseline 0.8 128 thrpt 5 17948,458 ± 2517,146 ops/ms > CompetitiveBenchmark.branchlessCandidate 0 128 thrpt 5 36995,216 ± 1933,371 ops/ms > CompetitiveBenchmark.branchlessCandidate 0.2 128 thrpt 5 10730,098 ± 322,258 ops/ms > CompetitiveBenchmark.branchlessCandidate 0.4 128 thrpt 5 11226,245 ± 124,199 ops/ms > CompetitiveBenchmark.branchlessCandidate 0.5 128 thrpt 5 11210,890 ± 215,824 ops/ms > CompetitiveBenchmark.branchlessCandidate 0.8 128 thrpt 5 11154,615 ± 245,362 ops/ms > CompetitiveBenchmark.vectorizedCandidate 0 128 thrpt 5 1140,617 ± 14,719 ops/ms > CompetitiveBenchmark.vectorizedCandidate 0.2 128 thrpt 5 994,966 ± 29,994 ops/ms > CompetitiveBenchmark.vectorizedCandidate 0.4 128 thrpt 5 923,214 ± 90,922 ops/ms > CompetitiveBenchmark.vectorizedCandidate 0.5 128 thrpt 5 890,464 ± 4,270 ops/ms > CompetitiveBenchmark.vectorizedCandidate 0.8 128 thrpt 5 950,584 ± 7,772 ops/ms > ``` I think we have to check the CPU flags. Looks like this is similar to other vectorizations we tried before. 10 times slower basically means there's no support for it at all and it runs the old in java code. 🤪 I think we have to check some of the hotspot flags based constants added previously to exclude on some constellations. Uwe -- 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: issues-unsubscr...@lucene.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: issues-unsubscr...@lucene.apache.org For additional commands, e-mail: issues-h...@lucene.apache.org
