leezu commented on a change in pull request #15969: Partitioning Gluon
HybridBlocks
URL: https://github.com/apache/incubator-mxnet/pull/15969#discussion_r373748228
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File path: python/mxnet/gluon/block.py
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@@ -954,6 +955,22 @@ def _build_cache(self, *args):
unused = ', '.join(list(param_names - set(used_param_names)))
warnings.warn("Parameter %s is not used by any computation. "
"Is this intended?"%unused, stacklevel=4)
+ if self._backend:
+ arg_array = []
+ ctx = args[0].context
+ try:
+ for name in out.list_arguments():
+ if name in data_names.keys():
+ arg_array.append(args[data_names[name]])
+ else:
+ arg_array.append(params.get(name).data())
+
+ except DeferredInitializationError:
Review comment:
Ie. instead of handling except DeferredInitializationError as `arg_array =
None`, you need to infer the parameter shapes earlier on based on the symbol,
before creating the CachedOp
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