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118 lines
4.8 KiB
118 lines
4.8 KiB
/*Copyright (c) 2018 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 "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 BuildGeluNode(
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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 input = platform::GetInputNode(op, "X", ngb_node_map);
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auto half = paddle::platform::CreateConstant(input->get_element_type(),
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input->get_shape(), {0.5});
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auto one = paddle::platform::CreateConstant(input->get_element_type(),
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input->get_shape(), {1});
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auto sqrt_two =
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std::make_shared<ngraph::op::Sqrt>(paddle::platform::CreateConstant(
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input->get_element_type(), input->get_shape(), {2}));
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auto out = half * input *
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(one + std::make_shared<ngraph::op::Erf>(input / sqrt_two));
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platform::SetOutputNode(op, "Out", out, ngb_node_map);
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}
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void BuildGeluGradNode(
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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 input = platform::GetInputNode(op, "X", ngb_node_map);
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auto dout = platform::GetInputNode(op, "Out@GRAD", ngb_node_map);
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auto half = paddle::platform::CreateConstant(input->get_element_type(),
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input->get_shape(), {0.5});
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auto minus_half = paddle::platform::CreateConstant(
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input->get_element_type(), input->get_shape(), {-0.5});
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auto one = paddle::platform::CreateConstant(input->get_element_type(),
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input->get_shape(), {1});
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auto two = paddle::platform::CreateConstant(input->get_element_type(),
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input->get_shape(), {2});
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auto pi = paddle::platform::CreateConstant(
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input->get_element_type(), input->get_shape(), {3.14159265359});
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auto sqrt_two = std::make_shared<ngraph::op::Sqrt>(two);
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auto sqrt_pi = std::make_shared<ngraph::op::Sqrt>(pi);
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auto first =
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half * (one + std::make_shared<ngraph::op::Erf>(input * one / sqrt_two));
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auto second = half * (two / sqrt_pi) * (one / sqrt_two) * input *
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std::make_shared<ngraph::op::Exp>(minus_half * input * input);
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auto gelu_grad = dout * (first + second);
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platform::SetOutputNode(op, "X@GRAD", gelu_grad, ngb_node_map);
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}
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void BuildReluGradNode(
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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 out = platform::GetInputNode(op, "Out", ngb_node_map);
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auto dout = platform::GetInputNode(op, "Out@GRAD", ngb_node_map);
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auto relu_grad = std::make_shared<ngraph::op::ReluBackprop>(out, dout);
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platform::SetOutputNode(op, "X@GRAD", relu_grad, ngb_node_map);
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}
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void BuildSquareNode(
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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 input = platform::GetInputNode(op, "X", ngb_node_map);
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auto out = input * input;
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platform::SetOutputNode(op, "Out", out, ngb_node_map);
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}
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void BuildTanhGradNode(
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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 out = platform::GetInputNode(op, "Out", ngb_node_map);
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auto dout = platform::GetInputNode(op, "Out@GRAD", ngb_node_map);
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auto shape = out->get_shape();
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auto node_const =
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ngraph::op::Constant::create(ngraph::element::f32, shape, {1});
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auto result = dout * (node_const - out * out);
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platform::SetOutputNode(op, "X@GRAD", result, 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(gelu, BuildGeluNode);
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REGISTER_NG_OP(gelu_grad, BuildGeluGradNode);
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REGISTER_NG_OP(relu_grad, BuildReluGradNode);
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REGISTER_NG_OP(square, BuildSquareNode);
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REGISTER_NG_OP(tanh_grad, BuildTanhGradNode);
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