[GitHub] [incubator-mxnet] TaoLv commented on issue #17159: Performance regression from 1.4.1 to 1.5.1

[GitBox <gi...@apache.org>]

TaoLv commented on issue #17159: Performance regression from 1.4.1 to 1.5.1
URL: https://github.com/apache/incubator-mxnet/issues/17159#issuecomment-568822313
 
 
   @jonatan1626 Maybe not relate to the regression, but c5.18xlarge should have 2 cpu sockets and 18 cores on each. The env variables should look like:
   ```
   export OMP_NUM_THREADS=36
   export KMP_AFFINITY=granularity=fine,noduplicates,compact,1,0
   python gluon_resnext50.py --iteration 100000
   ```
   If you just want to leverage the first cpu socket (like what @wuxun-zhang did on his machine):
   ```
   export OMP_NUM_THREADS=18
   export KMP_AFFINITY=granularity=fine,noduplicates,compact,1,0
   numactl --physcpubind=0-17 --membind=0 python gluon_resnext50.py --iteration 100000
   ```

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