NeoZhangJianyu commented on issue #14087: Poor performance of the libmxnet if OMP_PLACES environment variable is present URL: https://github.com/apache/incubator-mxnet/issues/14087#issuecomment-479381528 @Sandeep Krishnamurthy "This issue is caused by 2 conflicting OMP runtimes" as mentioned by @stsukrov. For MXNet installed by PIP/Conda by now: 1. 'mxnet-mkl' is without the problem `pip install mxnet-mkl` or `conda install mxnet-mkl` 2. 'mxnet' have such issue. `pip install mxnet` or `conda install mxnet` For MXNet installed by source: 1. Set PYTHONPATH `$ export PYTHONPATH=/path/to/incubator-mxnet/python` 2. Set Library Path `$ export LD_LIBRARY_PATH=/path/to/incubator-mxnet/lib:$LD_LIBRARY_PATH` Above setting after compile could avoid the issue of conflicting OMP runtimes. In you want to use OMP_PLACES to improve the performance in this case: 1. `export OMP_PLACES='{0:8:1}'` could help you. You need to adjust it for you CPU. 2. `export OMP_PLACES=56` is not supported by GOMP. It only trigger one thread if works.
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