Fix/fix autotp universal checkpoint ci - #7937
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sfc-gh-truwase merged 2 commits intoMar 31, 2026
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Signed-off-by: Masahiro Tanaka <mtanaka@anyscale.com>
Signed-off-by: Masahiro Tanaka <mtanaka@anyscale.com>
sfc-gh-truwase
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Mar 31, 2026
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The full CI test fails throwing "RuntimeError: Cannot re-initialize CUDA" because of tests for universal checkpoint and AutoTP.
It happens because they run torch.cuda.current_device() under pytest --forked. As the tests only touch universal checkpoint metadata, we won't need to call it. This PR skips constructor-time AutoTP materialization when mp_group is None.
Partitioning still happens in the real AutoTP usage where an actual model-parallel group is given.