larroy edited a comment on issue #12160: Remove conflicting llvm OpenMP from 
cmake builds
URL: https://github.com/apache/incubator-mxnet/pull/12160#issuecomment-495010491
 
 
   This is not (only) about the assertion. Unit tests hang when compiling with 
OpenMP in Linux. I always compile without openmp for this reason. 
   
   There are several related issues that we hope that this PR will make go away:
   
   https://github.com/apache/incubator-mxnet/issues/14999
   
   @cjolivier01 is suggesting to run the tests with MXNET_USE_OPERATOR_TUNING=0 
so OMP is always used for operators, but is this a useful scenario? If with the 
provided openmp and tuning we get similar perfomance why does it matter if some 
operators are tuned or not?  Please elaborate on why are you requesting 
additional work and benchmarks and not just ask for open ended work with might 
discourage this contribution which was opened more than half a year ago. I 
suggest to provide a path to conclusion when asking for additional work, 
explain the reasons and limit the scope.
   
   
   I think running a couple of end to end models like mnist or resnet is a 
valid request. There's also the internal benchmarks which could give us data on 
possible regressions so the PR could be reverted if we observe regressions 
after a couple of days. This is not a one way door type of decision.

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