wkcn commented on issue #9920: Asynchronous Issue on CustomOP and mxnet.image.ImageDetIter URL: https://github.com/apache/incubator-mxnet/issues/9920#issuecomment-415599500 @MinZhaoLin 你遇到的问题好像和这个issue不一样 metric里传入的pred_label是GPU数据，label是CPU数据 你可以尝试pred_label.as_in_context(label.context)
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