[GitHub] [incubator-mxnet] szha commented on issue #16256: [Bug] Failed to evaluate gradient on samples with train_mode=False

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szha commented on issue #16256: [Bug] Failed to evaluate gradient on samples with train_mode=False
URL: https://github.com/apache/incubator-mxnet/issues/16256#issuecomment-537235709
 
 
   @zixuanweeei the `train_mode` concept is different from whether it's "an inference only route". It is for controlling the different behaviors between training mode and inference mode (e.g. dropout behaves as identity during inference). The code should rely on whether the gradient is being recorded instead.

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