larroy edited a comment on issue #12160: Remove conflicting llvm OpenMP from 
cmake builds
URL: https://github.com/apache/incubator-mxnet/pull/12160#issuecomment-502312347
 
 
   Gluon unit tests seem to run faster with the system omp:
   
   ```
   test_gluon.test_np_shape_parameters ... (2, 2016)
   (2, 16)
   ok
   test_gluon.test_gluon_param_load ... ok
   
   ----------------------------------------------------------------------
   Ran 107 tests in 70.958s
   
   OK (SKIP=18)
   206.25user 490.32system 1:12.04elapsed 966%CPU (0avgtext+0avgdata 
13262532maxresident)k
   0inputs+976152outputs (0major+33768421minor)pagefaults 0swaps
   ```
   
   
   Master:
   
   ```
   (2, 16)
   ok
   test_gluon.test_gluon_param_load ... ok
   
   ----------------------------------------------------------------------
   Ran 107 tests in 259.936s
   
   OK (SKIP=18)
   949.25user 1507.26system 4:21.16elapsed 940%CPU (0avgtext+0avgdata 
13279492maxresident)k
   0inputs+976152outputs (0major+34278780minor)pagefaults 0swaps
   ```
   My previous runs were made on a 72 core machine (c5d.18xlarge)
   

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