ThomasDelteil commented on issue #14391: as_in_context() does not copy the gradient to the new context URL: https://github.com/apache/incubator-mxnet/issues/14391#issuecomment-472688222 In what case would you not want to copy gradients that has been attached? Most as in context happened on data without gradient, I only discovered the bug on some niche use case that requires data with gradient attached. If the data does not have gradient attached the runtime would be the same since no gradient would need moving On Wed, Mar 13, 2019, 19:00 JackieWu <notificati...@github.com> wrote: > I'm worry copy_grad=True will drop the performance. Assume that it takes > 1s to copy the data of a large tensor, it will takes extra 1s to copy the > gradient. > > — > You are receiving this because you authored the thread. > Reply to this email directly, view it on GitHub > <https://github.com/apache/incubator-mxnet/issues/14391#issuecomment-472674519>, > or mute the thread > <https://github.com/notifications/unsubscribe-auth/ADi00-T27pr84_lNYc42pd4Jrfq8QmnEks5vWa1JgaJpZM4bphps> > . >
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