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pytest --fork makes test easily hang #94

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tengyifei opened this issue Feb 7, 2025 · 0 comments
Open

pytest --fork makes test easily hang #94

tengyifei opened this issue Feb 7, 2025 · 0 comments

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@tengyifei
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We currently run pytest with the --fork flag because:

  • If you call torch_xla use_spmd, then that will contaminate every test in the process to use SPMD
  • torch_xla and torchax tests cannot coexist in one process

But --fork causes other issues:

  • If anything at the top of the test imports torchax or jax, then the test body will hang, because JAX doesn't like fork
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