szha commented on a change in pull request #18853:
URL: https://github.com/apache/incubator-mxnet/pull/18853#discussion_r464607166
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File path: python/mxnet/gluon/parameter.py
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@@ -662,6 +662,7 @@ def cast(self, dtype):
The new data type.
"""
self._dtype = dtype
+ self._var = None # Clear Symbol Variable as it caches the dtype
Review comment:
how is this related to the cached graph and cached op fields?
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