scverse / scverse/fast-array-utils
fork() called from a process already using GNU OpenMP, this is unsafe.
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- Dominant language
- Python
- Stars
- 15
- Forks
- 5
- Avg merge
- 10h 33m
- Merged PRs (30d)
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Description
I got this issue when using fast_array_utils>=1.4.1 and torch DataLoaders with multiple workers. It seems the new fast_array_utils njit decorator is conflicting with torch.
EDIT: see below an MRE.
Contributor guide
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First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start with the MRE referenced in the issue and reproduce the failure using fast_array_utils>=1.4.1 with a PyTorch DataLoader configured for multiple workers. Read the discussion for the njit decorator and fork interaction; done means the reported unsafe GNU OpenMP fork error is resolved or its triggering conditions are clearly addressed.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- python, pytorch
- Domain
- machine-learning, performance
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Active
- Clarity
- Mostly clear
- Newbie friendliness
- 48/100