`dipy==1.9.0` is causing our macOS GitHub Actions runners to stall on unrelated `torch` tests

[joshuacwnewton]

`dipy==1.9.0` is causing our macOS GitHub Actions runners to stall on unrelated `torch` tests

[skoudoro]

Hi @joshuacwnewton,

I confirm, The difference between 1.8.0 and 1.9.0 on macOS is OPENMP:
since 1.9.0, we build our package with openmp flag which was not the case before.

Not sure what is the issue. So maybe you are encountering concurrency, or openmp conflict, or something like that with pytorch. I will experiment next week

[joshuacwnewton]

Thank you for the confirmation! I'll try some experimentation on our end, too. :)

[joshuacwnewton]

The OpenMP mention reminded me of a similar issue we had with an upstream change to onnxruntime:

• spinalcordtoolbox/spinalcordtoolbox#2930
• spinalcordtoolbox/spinalcordtoolbox#3033
• spinalcordtoolbox/spinalcordtoolbox#3433

tl;dr: onnxruntime required OpenMP to be installed for versions 1.5.x and 1.6.x. They then removed this requirement in 1.7.0 due to feedback:

• microsoft/onnxruntime#6610

Going off of what we did previously to fix this (install openmp in CI), I tried this on our test PR to see if it would prevent the runner from timing out. But, libomp is already installed:

Run brew install libomp
Warning: libomp 17.0.6 is already installed and up-to-date.

I will keep investigating, but my hunch is that our package will just have to specific dipy!=1.9.0 in the short term.