[AMP] Check call order of paddle.amp.decorate and paddle.DataParallel #38785
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PR types
Performance optimization
PR changes
APIs
Describe
对于使用amp-o2的分布式训练，要求
paddle.amp.decorate需要在paddle.DataParallel初始化分布式训练的网络前。在
paddle.amp.decorate接口添加对上述逻辑的检查。如果调用顺序有错，将报出如下RuntimeError：For distributed AMP training, you should first use paddle.amp.decorate() to decotate origin model, and then call paddle.DataParallel get distributed model.