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fix flaky test test_custom_op_exc #14878

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May 6, 2019
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Description

Address flaky test reports: #14835

I cannot reproduce the error after thousands of running, so the only thing that is clear: non-zero exitcode with no error logs may happen when triggering OOM in spawned process.

This PR uses Cholesky factorization in cpu mode instead to trigger error in real execution.

Checklist

Essentials

Please feel free to remove inapplicable items for your PR.

  • The PR title starts with [MXNET-$JIRA_ID], where $JIRA_ID refers to the relevant JIRA issue created (except PRs with tiny changes)
  • Changes are complete (i.e. I finished coding on this PR)
  • All changes have test coverage:
  • Unit tests are added for small changes to verify correctness (e.g. adding a new operator)
  • Nightly tests are added for complicated/long-running ones (e.g. changing distributed kvstore)
  • Build tests will be added for build configuration changes (e.g. adding a new build option with NCCL)
  • Code is well-documented:
  • For user-facing API changes, API doc string has been updated.
  • For new C++ functions in header files, their functionalities and arguments are documented.
  • For new examples, README.md is added to explain the what the example does, the source of the dataset, expected performance on test set and reference to the original paper if applicable
  • Check the API doc at http://mxnet-ci-doc.s3-accelerate.dualstack.amazonaws.com/PR-$PR_ID/$BUILD_ID/index.html
  • To the my best knowledge, examples are either not affected by this change, or have been fixed to be compatible with this change

Changes

  • Feature1, tests, (and when applicable, API doc)
  • Feature2, tests, (and when applicable, API doc)

Comments

  • If this change is a backward incompatible change, why must this change be made.
  • Interesting edge cases to note here

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@wkcn wkcn left a comment

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LGTM. Thank you for the fix!

@arcadiaphy arcadiaphy merged commit 42ede50 into apache:master May 6, 2019
@arcadiaphy arcadiaphy deleted the pr_exc_test branch May 6, 2019 13:31
access2rohit pushed a commit to access2rohit/incubator-mxnet that referenced this pull request May 14, 2019
haohuanw pushed a commit to haohuanw/incubator-mxnet that referenced this pull request Jun 23, 2019
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2 participants