zixuanweeei commented on issue #15497: [MKLDNN] Independent gradients requests check with respect to weights and bias of convolution URL: https://github.com/apache/incubator-mxnet/pull/15497#issuecomment-511638619 @ciyongch The equality assertion error happened with the outputs of convolution forward when any of the gradients requests (`x`, `w`, `b`) was `null`. Not sure about whether the Backward process drops the numerical precision.
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