reminisce commented on a change in pull request #10889: [MXNET-382] Shape and
Size Operator
URL: https://github.com/apache/incubator-mxnet/pull/10889#discussion_r191872060
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File path: src/operator/tensor/elemwise_unary_op.h
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@@ -388,6 +388,43 @@ void CastCompute(const nnvm::NodeAttrs& attrs,
});
}
+template<typename xpu>
+void ShapeCompute(const nnvm::NodeAttrs& attrs,
+ const OpContext& ctx,
+ const std::vector<TBlob>& inputs,
+ const std::vector<OpReqType>& req,
+ const std::vector<TBlob>& outputs) {
+ CHECK_EQ(inputs.size(), 1U);
+ CHECK_EQ(outputs.size(), 1U);
+ CHECK_EQ(req.size(), 1U);
+ const TBlob& in_data = inputs[0];
+ const TBlob& out_data = outputs[0];
+ mshadow::Stream<xpu> *s = ctx.get_stream<xpu>();
+ const TShape& in_shape = in_data.shape_;
+ MSHADOW_TYPE_SWITCH(out_data.type_flag_, DType, {
+ mxnet_op::Kernel<mshadow_op::identity_with_cast, xpu>::Launch(
+ s, in_data.ndim(), out_data.dptr<int64_t>(), in_shape.data());
Review comment:
`in_shape.data` is a pointer in cpu memory which cannot be directly accessed
on gpu. You can use `Shape<ndim>` instead.
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