Fix gradient clipping for Sharded DDP #9168
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LysandreJik
approved these changes
Dec 17, 2020
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guyrosin
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Jan 15, 2021
* Fix gradient clipping for Sharded DDP * Fix typos in comments
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What does this PR do?
As mentioned in the discussion of #9156,
Trainerdoes not do gradient clipping correctly when using a sharded optimizer. This PR fixes that, and also allowsTrainerto not perform any gradient clipping (by passingNoneor0to the corresponding argument).