mycpuorg commented on issue #15684: mxnet nd array shape modified with benchmark ?? URL: https://github.com/apache/incubator-mxnet/issues/15684#issuecomment-517503618 I figured the problem out. Posting this for posterity. Do not use pytest-benchmark in cases where your training function is not re-entrant. The issue is that pytest-benchmark, by default, performs many rounds and iterations of testing to generate the benchmark results. This is done by spawning many concurrent threads which does not go well with typical training functions. So, my solution was to use benchmark.pendatic method where you can specify the number of iterations and rounds needed to be tested. Use this method and limit rounds and iterations to 1 each.
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