zheng-da commented on a change in pull request #13599: fallback to dense
version for grad(reshape), grad(expand_dims)
URL: https://github.com/apache/incubator-mxnet/pull/13599#discussion_r240880048
##########
File path: src/operator/tensor/elemwise_unary_op_basic.cc
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@@ -236,6 +236,27 @@ NNVM_REGISTER_OP(_backward_copy)
return std::vector<bool>{true};
});
+NNVM_REGISTER_OP(_backward_reshape)
+.set_num_inputs(1)
+.set_num_outputs(1)
+.set_attr<nnvm::TIsBackward>("TIsBackward", true)
+.set_attr<nnvm::FInplaceOption>("FInplaceOption",
+ [](const NodeAttrs& attrs){
+ return std::vector<std::pair<int, int> >{{0,
0}};
+ })
+.set_attr<FInferStorageType>("FInferStorageType", ElemwiseStorageType<1, 1,
false, false, false>)
+.set_attr<FCompute>("FCompute<cpu>", UnaryOp::IdentityCompute<cpu>)
+#if MXNET_USE_MKLDNN == 1
+.set_attr<bool>("TIsMKLDNN", true)
+.set_attr<FResourceRequest>("FResourceRequest", [](const NodeAttrs& n) {
+ return std::vector<ResourceRequest>{ResourceRequest::kTempSpace};
+})
+#endif
Review comment:
does mkldnn support reshape?
if you want to optimize for mkldnn, you should add FComputeEx
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