Windows wheels: fix smoke test hang by forcing single-threaded execution#18379
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manuelcandales merged 1 commit intorelease/1.2from Mar 20, 2026
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…ution pthreadpool's condvar-based synchronization on Windows can deadlock with multiple threads due to a lost-wakeup bug in signal_num_recruited_threads. Reset the threadpool to 1 thread before loading the model to avoid the issue.
🔗 Helpful Links🧪 See artifacts and rendered test results at hud.pytorch.org/pr/pytorch/executorch/18379
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pthreadpool's condvar-based synchronization on Windows can deadlock with multiple threads due to a lost-wakeup bug in signal_num_recruited_threads. Reset the threadpool to 1 thread before loading the model to avoid the issue.