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59 lines
1.9 KiB
59 lines
1.9 KiB
9 years ago
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/* Copyright (c) 2016 Baidu, Inc. 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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#include "FullMatrixProjection.h"
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namespace paddle {
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REGISTER_PROJECTION(fc, FullMatrixProjection);
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FullMatrixProjection::FullMatrixProjection(const ProjectionConfig& config,
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const ParameterPtr& parameter,
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bool useGpu)
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: Projection(config, parameter, useGpu) {
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weight_.reset(
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new Weight(config.input_size(), config.output_size(), parameter));
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}
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void FullMatrixProjection::forward() {
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REGISTER_TIMER_INFO("FwMulTimer", getName().c_str());
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out_->value->mul(in_->value, weight_->getW(), 1, 1);
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}
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void FullMatrixProjection::backward(const UpdateCallback& callback) {
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bool syncFlag = hl_get_sync_flag();
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/* Calculate the W-gradient for the current layer */
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if (weight_->getWGrad()) {
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REGISTER_TIMER_INFO("GradMulTimer", getName().c_str());
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weight_->getWGrad()->mul(in_->value->getTranspose(), out_->grad, 1, 1);
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}
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// If callback does not change value, backward propagation error
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// asynchronously, so that we can do the callback concurrently.
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hl_set_sync_flag(false);
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/* Calculate the input layers error */
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if (in_->grad) {
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REGISTER_TIMER_INFO("BpMulTimer", getName().c_str());
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in_->grad->mul(out_->grad, weight_->getW()->getTranspose(), 1, 1);
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}
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hl_set_sync_flag(syncFlag);
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parameter_->incUpdate(callback);
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}
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} // namespace paddle
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