leezu commented on a change in pull request #18083:
URL: https://github.com/apache/incubator-mxnet/pull/18083#discussion_r412613930
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File path: python/mxnet/gluon/metric.py
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@@ -24,9 +24,9 @@
import numpy
Review comment:
Instead of using numpy, we can use `mxnet.numpy` as it runs
asynchronously and has GPU support.
The summary states of a metric should be stored on CPU, but if for example
data and label are on GPU and input to the metric, we can calculate the
sufficient statistics on GPU
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