core dump on github actions.

[bw4sz]

@henrykironde or @ethanwhite do either of you have guesses here. I'm trying to get github actions CI back up and running. All tests pass locally. On github we get this crazy ugly core dump on the beginning of tests. Maybe the size of the memory is too small when loading deepforest? I can't figure out how to continue to debug.

https://github.com/weecology/DeepTreeAttention/runs/4958120213?check_suite_focus=true

[ethanwhite]

@henrykironde - do you have some time to take a look at this? I agree with @bw4sz's intuition that this feels like running our of memory, but the runners should have 7 GB of RAM (https://docs.github.com/en/actions/using-github-hosted-runners/about-github-hosted-runners), which seems like it should be plenty?

A couple of things to look at:

• Check the package versions that are getting installed. There was a bug in pytest 5.3.3 (pytest 5.3.3: slow or crashing tests pytest-dev/pytest#6492) that was causing core dump, but this also seems like a place where we could have some incompatibility due to conda-forge install issues that's causing a failure.
• If necessary we might be able to create a core dump to dig further (https://gist.github.com/kudaba/53f68340bd28cd1e8824ac1e6ba8cf88)

[ethanwhite]

I successfully ran the tests on HPG with 7 GB of RAM.

[bw4sz]

I am refactoring the tests to make sure the model only gets created once. Hopefully this will reduce memory management. Its hard because I cannot reproduce locally.

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