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63 lines
2.2 KiB
63 lines
2.2 KiB
/* Copyright (c) 2019 PaddlePaddle Authors. All Rights Reserved.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License. */
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#pragma once
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#include <functional>
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#include <memory>
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#include <string>
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#include <unordered_map>
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#include <vector>
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#include "ngraph/ngraph.hpp"
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#include "paddle/fluid/operators/ngraph/ops/op_bridge.h"
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#include "paddle/fluid/platform/ngraph_helper.h"
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namespace paddle {
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namespace operators {
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namespace ngraphs {
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void BuildGatherNode(
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const std::shared_ptr<paddle::framework::OperatorBase>& op,
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std::shared_ptr<
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std::unordered_map<std::string, std::shared_ptr<ngraph::Node>>>
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ngb_node_map) {
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auto x = platform::GetInputNode(op, "X", ngb_node_map);
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PADDLE_ENFORCE_NOT_NULL(x);
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auto index = platform::GetInputNode(op, "Index", ngb_node_map);
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auto out = std::make_shared<ngraph::op::Gather>(x, index);
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paddle::platform::SetOutputNode(op, "Out", out, ngb_node_map);
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}
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void BuildGatherGradNode(
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const std::shared_ptr<paddle::framework::OperatorBase>& op,
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std::shared_ptr<
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std::unordered_map<std::string, std::shared_ptr<ngraph::Node>>>
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ngb_node_map) {
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auto dout = platform::GetInputNode(op, "Out@GRAD", ngb_node_map);
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PADDLE_ENFORCE_NOT_NULL(dout);
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auto x = platform::GetInputNode(op, "X", ngb_node_map);
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auto index = platform::GetInputNode(op, "Index", ngb_node_map);
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std::shared_ptr<ngraph::Node> x0 = paddle::platform::CreateConstant(
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dout->get_element_type(), x->get_shape(), {0});
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auto dx = std::make_shared<ngraph::op::ScatterAdd>(x0, index, dout);
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paddle::platform::SetOutputNode(op, "X@GRAD", dx, ngb_node_map);
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}
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} // namespace ngraphs
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} // namespace operators
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} // namespace paddle
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REGISTER_NG_OP(gather, BuildGatherNode);
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REGISTER_NG_OP(gather_grad, BuildGatherGradNode);
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