wkcn opened a new issue #14648: `mx.gluon.data.DataLoader` is slow when the size of batch is large URL: https://github.com/apache/incubator-mxnet/issues/14648 Hi, there. I found `mx.gluon.data.DataLoader` is slow when the size of batch is large, since it calls `pickle.load` in `__next__` method of `_MultiWorkerIter` class. [[Code]](https://github.com/apache/incubator-mxnet/blob/master/python/mxnet/gluon/data/dataloader.py#L450) I will upload the re-procedure code.
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