matteosal commented on issue #20675: URL: https://github.com/apache/incubator-mxnet/issues/20675#issuecomment-961508317
@leezu I haven't originally, but now I have built with openblas instead of MKL and I'm getting the same problem. However, I have discovered that benchmarks of v2.0 builds (both MKL and OpenBLAS) are insensitive to setting `MXNET_ENGINE_TYPE="NaiveEngine"`: performance doesn't get better or worse. On the other hand, with v1.6 + naive engine I see a slowdown as expected, and performance becomes more similar to v1.6 (although still up to 2.5x faster in some cases). So it seems there is something wrong with multithreading in v2.0, perhaps with OpenMP? Do I have some bad setting in my OpenMP build flags for v2.0? -- 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...@mxnet.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: issues-unsubscr...@mxnet.apache.org For additional commands, e-mail: issues-h...@mxnet.apache.org
