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104 lines
3.5 KiB
104 lines
3.5 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 <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 "ngraph/op/embedding_lookup.hpp"
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#include "paddle/fluid/operators/lookup_table_op.h"
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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 BuildLookupTableNode(
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const std::shared_ptr<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 op_attrs = paddle::framework::AttrReader(op->Attrs());
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const bool is_sparse = op_attrs.Get<bool>("is_sparse");
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const int64_t padding_idx = op_attrs.Get<int64_t>("padding_idx");
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auto ng_ids = paddle::platform::GetInputNode(op, "Ids", ngb_node_map);
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PADDLE_ENFORCE_NOT_NULL(ng_ids);
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const auto ng_w = paddle::platform::GetInputNode(op, "W", ngb_node_map);
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PADDLE_ENFORCE_NOT_NULL(ng_w);
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if (is_sparse) {
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PADDLE_THROW("Sparsity is not yet supported in nGraph lookup_table op.");
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}
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if (padding_idx != kNoPadding) {
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PADDLE_THROW("Padding is not yet supported in nGraph lookup_table op.");
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}
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auto shape = ng_ids->get_shape();
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if (shape.back() == 1) {
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shape.pop_back();
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ng_ids = platform::NgReshaper(ng_ids, shape);
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}
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auto ng_lookup = std::make_shared<ngraph::op::Gather>(ng_w, ng_ids);
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platform::SetOutputNode(op, "Out", ng_lookup, ngb_node_map);
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}
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void BuildLookupTableGradNode(
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const std::shared_ptr<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 op_attrs = paddle::framework::AttrReader(op->Attrs());
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const bool is_sparse = op_attrs.Get<bool>("is_sparse");
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const int64_t padding_idx = op_attrs.Get<int64_t>("padding_idx");
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auto ng_ids = paddle::platform::GetInputNode(op, "Ids", ngb_node_map);
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PADDLE_ENFORCE_NOT_NULL(ng_ids);
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const auto ng_w = paddle::platform::GetInputNode(op, "W", ngb_node_map);
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PADDLE_ENFORCE_NOT_NULL(ng_w);
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auto dout = paddle::platform::GetInputNode(op, "Out@GRAD", ngb_node_map);
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if (is_sparse) {
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PADDLE_THROW("Sparsity is not yet supported in nGraph lookup_table op.");
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}
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if (padding_idx != kNoPadding) {
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PADDLE_THROW("Padding is not yet supported in nGraph lookup_table op.");
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}
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auto shape = ng_ids->get_shape();
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if (shape.back() == 1) {
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shape.pop_back();
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ng_ids = platform::NgReshaper(ng_ids, shape);
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}
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std::shared_ptr<ngraph::Node> W0 = paddle::platform::CreateConstant(
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dout->get_element_type(), ng_w->get_shape(), {0});
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auto dW = std::make_shared<ngraph::op::ScatterAdd>(W0, ng_ids, dout);
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platform::SetOutputNode(op, "W@GRAD", dW, 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(lookup_table, BuildLookupTableNode);
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REGISTER_NG_OP(lookup_table_grad, BuildLookupTableGradNode);
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