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57 lines
2.1 KiB
57 lines
2.1 KiB
/* Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserve.
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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 "paddle/framework/eigen.h"
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#include "paddle/framework/op_registry.h"
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namespace paddle {
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namespace operators {
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template <typename Place, typename T>
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class DecayedAdagradOpKernel : public framework::OpKernel<T> {
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public:
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void Compute(const framework::ExecutionContext& ctx) const override {
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auto param_out_tensor = ctx.Output<framework::Tensor>("ParamOut");
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auto moment_out_tensor = ctx.Output<framework::Tensor>("MomentOut");
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param_out_tensor->mutable_data<T>(ctx.GetPlace());
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moment_out_tensor->mutable_data<T>(ctx.GetPlace());
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float decay = ctx.Attr<float>("decay");
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float epsilon = ctx.Attr<float>("epsilon");
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auto param = framework::EigenVector<T>::Flatten(
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*ctx.Input<framework::Tensor>("Param"));
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auto grad = framework::EigenVector<T>::Flatten(
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*ctx.Input<framework::Tensor>("Grad"));
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auto moment = framework::EigenVector<T>::Flatten(
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*ctx.Input<framework::Tensor>("Moment"));
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auto lr = framework::EigenVector<T>::Flatten(
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*ctx.Input<framework::Tensor>("LearningRate"));
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auto param_out = framework::EigenVector<T>::Flatten(*param_out_tensor);
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auto moment_out = framework::EigenVector<T>::Flatten(*moment_out_tensor);
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auto place = ctx.GetEigenDevice<Place>();
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moment_out.device(place) = decay * moment + (1 - decay) * grad * grad;
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Eigen::DSizes<int, 1> m_dsize(moment_out_tensor->numel());
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param_out.device(place) =
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param - lr.broadcast(m_dsize) * grad / (moment_out.sqrt() + epsilon);
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}
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};
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} // namespace operators
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} // namespace paddle
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