[trainer] fix double wrapping + test #10583
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sgugger
approved these changes
Mar 8, 2021
LysandreJik
approved these changes
Mar 8, 2021
Iwontbecreative
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Jul 15, 2021
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We have an issue with
under any environment that requires model wrapping - we currently get the wrapping multiple times - and things may kind of work - but most of the time it breaks badly - thanks to apex for complaining noisily when it's being wrapped second time.
i.e. we get things like
DataParallel(DataParallel(model))This PR fixes this problem and adds a test.
@sgugger, @LysandreJik