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Fix flaky test test_deterministic_of_observed_modified_interface #4707

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merged 1 commit into from
May 25, 2021

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@ricardoV94 ricardoV94 commented May 17, 2021

This test has been failing frequently in the CI. I think it has to do with the initial values being stochastic and sometimes giving combinations that lead to a derivative underflow in float32. I fixed the testvals and made sure it passes on float32 locally.

Confidence this will fix issues: 85%

Closes #4661

Edit: to be clear I managed to induce the failure locally by running in a loop and monitoring the random start values. Fixing the observed start values to those made the test fail systematically. I am just not sure this was the only thing that was causing the failures.

@ricardoV94 ricardoV94 changed the title Fix flaxy test test_deterministic_of_observed_modified_interface Fix flaky test test_deterministic_of_observed_modified_interface May 17, 2021
@ricardoV94 ricardoV94 merged commit 0970af0 into pymc-devs:v4 May 25, 2021
@ricardoV94 ricardoV94 deleted the fix_flaxy_test branch May 26, 2021 12:38
twiecki pushed a commit that referenced this pull request Jun 5, 2021
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2 participants