PyTorch gotcha: scalar store/load without a debug_barrier leads to a very bad time
typedfemale · x · 2026-09-06
typedfemale flags a subtle torch.compile pitfall: storing and reloading a scalar without manually inserting a debugbarrier in the right place leads to "a very bad time." Not quite a bug — more a barrier-timing trap developers need to know about when working with compiled GPU code.
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