kaleidoscopical commented on issue #12001: SyncBatchNorm problems URL: https://github.com/apache/incubator-mxnet/issues/12001#issuecomment-439631629 According to a quick test, the described failure in this issue has disappeared in the newest version of MXNet. Further report about efficiency and performance will be updated if time is available. @zhanghang1989 Thanks for your kind help. The `asnumpy()` function will be eventually called in the metric evaluation part, e.g. `mx.metric.CrossEntropy()`. This is the place where the fail happened as I described in the beginning of this issue. I am not sure what has been changed in the newest version, and whether the `SyncBatchNorm` really is executed because of ignorable speed drop (great if it is really executed).
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