eric-haibin-lin edited a comment on issue #17495: Initial inspections for singleton thread safety in MXNet URL: https://github.com/apache/incubator-mxnet/issues/17495#issuecomment-585461965 There are a couple of thread local variables in the python level, too: - [AttrScope](python/mxnet/symbol/contrib.py) for symbols. Used in control flow ops. - python/mxnet/context.py: _default_ctx = threading.local() - python/mxnet/gluon/block.py: _current = threading.local() - python/mxnet/name.py: _current = threading.local() - [_NumpyArrayScope](python/mxnet/util.py) used to declare numpy array creation They suggest that if the frontend python thread is switched, some of these contexts are lost.
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