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Posted to commits@mxnet.apache.org by GitBox <gi...@apache.org> on 2020/01/14 18:57:25 UTC

[GitHub] [incubator-mxnet] ptrendx commented on issue #17278: [Performance] CachedOp/Gluon performance thread

ptrendx commented on issue #17278: [Performance] CachedOp/Gluon performance thread
URL: https://github.com/apache/incubator-mxnet/issues/17278#issuecomment-574321205
 
 
   There are a few performance issues that we saw in `CachedOp` compared to graph executor.
   
    - https://github.com/apache/incubator-mxnet/blob/master/python/mxnet/gluon/block.py#L1013-L1014 is constructing a Python list (inclusing memory allocation) every time, which added ~100us for BERT inference
    - Bulking of ops is broken for ops using inputs to the graph / producing outputs of the graph (I believe it is referred in this comment: https://github.com/apache/incubator-mxnet/blob/master/src/imperative/imperative_utils.h#L1030)

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