apeforest commented on issue #15674: Straggler in latest mxnet when training with distributed parameter server URL: https://github.com/apache/incubator-mxnet/issues/15674#issuecomment-525432330 I think the reason is when using cpu pinned memory, the pinned device id is default to 0. The caller will need to pass in the device id: http://mxnet.incubator.apache.org/api/python/gluon/data.html?highlight=cpu%20pinned
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