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61 lines
2.2 KiB
61 lines
2.2 KiB
/* Copyright (c) 2016 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 "paddle/fluid/framework/eigen.h"
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#include "paddle/fluid/framework/op_registry.h"
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namespace paddle {
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namespace operators {
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template <typename DeviceContext, typename T>
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class ScaleKernel : public framework::OpKernel<T> {
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public:
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virtual void Compute(const framework::ExecutionContext& ctx) const {
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auto* in_var = ctx.InputVar("X");
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auto* in = framework::GetLoDTensorOrSelectedRowsValueFromVar(*in_var);
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auto scale = static_cast<T>(ctx.Attr<float>("scale"));
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auto bias = static_cast<T>(ctx.Attr<float>("bias"));
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auto bias_after_scale = ctx.Attr<bool>("bias_after_scale");
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auto* out_var = ctx.OutputVar("Out");
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if (in_var->IsType<framework::SelectedRows>() && in_var != out_var) {
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auto& in_slr = in_var->Get<framework::SelectedRows>();
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auto* out_slr = out_var->GetMutable<framework::SelectedRows>();
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out_slr->set_rows(in_slr.rows());
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out_slr->set_height(in_slr.height());
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}
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auto* out =
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framework::GetMutableLoDTensorOrSelectedRowsValueFromVar(out_var);
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out->mutable_data<T>(in->place());
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PADDLE_ENFORCE_EQ(in->dims(), out->dims(),
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"in and out should have the same dim");
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auto eigen_out = framework::EigenVector<T>::Flatten(*out);
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auto eigen_in = framework::EigenVector<T>::Flatten(*in);
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auto& dev = *ctx.template device_context<DeviceContext>().eigen_device();
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if (bias_after_scale) {
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eigen_out.device(dev) = scale * eigen_in + bias;
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} else {
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eigen_out.device(dev) = scale * (eigen_in + bias);
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}
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}
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};
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} // namespace operators
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} // namespace paddle
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