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[AMP] Check call order of paddle.amp.decorate and paddle.DataParallel #38785

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merged 4 commits into from
Jan 11, 2022
Merged

[AMP] Check call order of paddle.amp.decorate and paddle.DataParallel #38785

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07836b1
check amp.decorate and DataParallel
zhangbo9674 Jan 7, 2022
ca208b3
refine coverage
zhangbo9674 Jan 7, 2022
00501fe
fix layer dtype
zhangbo9674 Jan 7, 2022
37cf4c9
refine code
zhangbo9674 Jan 7, 2022
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4 changes: 4 additions & 0 deletions python/paddle/fluid/dygraph/amp/auto_cast.py
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Original file line number Diff line number Diff line change
Expand Up @@ -145,6 +145,10 @@ def check_models(models):
raise RuntimeError(
"Current train mode is pure fp16, models should be paddle.nn.Layer, but receive {}.".
format(type(model)))
if isinstance(model, paddle.DataParallel):
raise RuntimeError(
"For distributed AMP training, you should first use paddle.amp.decorate() to decotate origin model, and then call paddle.DataParallel get distributed model."
)


def check_optimizers(optimizers):
Expand Down