leezu commented on a change in pull request #20262:
URL: https://github.com/apache/incubator-mxnet/pull/20262#discussion_r649215340
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File path: python/mxnet/gluon/block.py
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@@ -1088,6 +1088,7 @@ def _get_graph(self, *args):
out = super().__call__(*args)
flatten_out, self._out_format = _flatten(out, "output")
symbol_outputs = dc.get_symbol(flatten_out,
sym_cls=type(symbol_inputs[0]))
+ dc.clear(flatten_out)
Review comment:
`dc.clear` here is called on the copied symbol? Previously you mentioned
that the copied graph does not contain DCInfo. If so, `dc.clear` here would be
a no-op. If the copied symbol however contains `DCInfo`, then you could clear
it already before returning the symbol. WDYT?
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