mengxr commented on issue #27546: [SPARK-30773][ML]Support NativeBlas for level-1 routines URL: https://github.com/apache/spark/pull/27546#issuecomment-585864274 Could you provide reproducible microbenchmark results for both OpenBLAS and MKL on arrays of different sizes? Last time we tested it it didn't help. But that was years ago. Note that JVM also improved SIMD. We should also check whether we can improve along that direction.
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