Allow ReadyQueue to handle empty tasks#15791
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albanD wants to merge 2 commits into
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Any chance we can get a test for this? :) |
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@ezyang I added a test. Unfortunately the bug relies on two threads finishing their work in a given order and it's not possible to trick them into syncing the right way (as many ops need to run on both in various orders). But I give much more work to one thread than the other and so the test is really reliable with the current autograd engine. |
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Summary: Allow the comparison function used in ReadyQueue to handle the empty FunctionTasks created by the reentrant autograd. Fix pytorch#11732 Pull Request resolved: pytorch#15791 Differential Revision: D13598006 Pulled By: soumith fbshipit-source-id: 0bfdf28a735fbfe44f0fdbaf8b74a6198e6a1984
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Allow the comparison function used in ReadyQueue to handle the empty FunctionTasks created by the reentrant autograd.
Fix #11732