| // The MIT License (MIT) |
| // |
| // Copyright (c) 2016 Northeastern University |
| // |
| // Permission is hereby granted, free of charge, to any person obtaining a copy |
| // of this software and associated documentation files (the "Software"), to deal |
| // in the Software without restriction, including without limitation the rights |
| // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| // copies of the Software, and to permit persons to whom the Software is |
| // furnished to do so, subject to the following conditions: |
| // |
| // The above copyright notice and this permission notice shall be included in |
| // all copies or substantial portions of the Software. |
| // |
| // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
| // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| // SOFTWARE. |
| |
| #ifndef CORE_INCLUDE_LAYERS_DROPOUT_LAYER_H_ |
| #define CORE_INCLUDE_LAYERS_DROPOUT_LAYER_H_ |
| |
| #include "dnn_layer.h" |
| |
| namespace dnnmark { |
| |
| template <typename T> |
| class DropoutLayer : public Layer<T> { |
| // using declaration for calling member from base class |
| using Layer<T>::p_dnnmark_; |
| using Layer<T>::layer_id_; |
| using Layer<T>::previous_layer_name_; |
| using Layer<T>::input_dim_; |
| using Layer<T>::output_dim_; |
| using Layer<T>::bottom_desc_; |
| using Layer<T>::top_desc_; |
| using Layer<T>::data_manager_; |
| |
| using Layer<T>::num_bottoms_; |
| using Layer<T>::bottoms_; |
| using Layer<T>::bottom_chunk_ids_; |
| using Layer<T>::bottom_diffs_; |
| using Layer<T>::bottom_diff_chunk_ids_; |
| |
| using Layer<T>::num_tops_; |
| using Layer<T>::tops_; |
| using Layer<T>::top_chunk_ids_; |
| using Layer<T>::top_diffs_; |
| using Layer<T>::top_diff_chunk_ids_; |
| |
| private: |
| DropoutParam dropout_param_; |
| DropoutDesc<T> desc_; |
| size_t random_states_size_; |
| int random_states_id_; |
| Data<T> *random_states_; |
| size_t reserve_space_size_; |
| int reserve_space_id_; |
| Data<T> *reserve_space_; |
| |
| public: |
| DropoutLayer(DNNMark<T> *p_dnnmark) |
| : Layer<T>(p_dnnmark), |
| dropout_param_(), desc_() { |
| } |
| |
| DropoutParam *getDropoutParam() { return &dropout_param_; } |
| |
| void Setup() { |
| // Set up indispensable stuff here |
| Layer<T>::Setup(); |
| |
| // Set up dropout related data |
| |
| |
| desc_.SetReserveSpaceSize(bottom_desc_, &reserve_space_size_); |
| desc_.SetStatesSize(*(p_dnnmark_->GetHandle()), p_dnnmark_->getRunMode(), |
| layer_id_, &random_states_size_); |
| |
| if (random_states_size_ > 0) { |
| random_states_id_ = data_manager_->CreateData(random_states_size_); |
| random_states_ = data_manager_->GetData(random_states_id_); |
| } |
| |
| desc_.Set(*(p_dnnmark_->GetHandle()), p_dnnmark_->getRunMode(), layer_id_, |
| dropout_param_, random_states_->Get(), random_states_size_); |
| |
| if (reserve_space_size_ > 0) { |
| reserve_space_id_ = data_manager_->CreateData(reserve_space_size_); |
| reserve_space_ = data_manager_->GetData(reserve_space_id_); |
| } |
| |
| if (input_dim_.n_ != 0 && input_dim_.c_ != 0 && |
| input_dim_.h_ != 0 && input_dim_.w_ != 0) { |
| // |
| // Standalone mode |
| // |
| |
| // Compute dimension of output data |
| ComputeOutputDim(); |
| |
| // Set top tensor |
| top_desc_.Set(output_dim_.n_, |
| output_dim_.c_, |
| output_dim_.h_, |
| output_dim_.w_); |
| |
| // Prepare top data |
| int top_size = output_dim_.n_ * |
| output_dim_.c_ * |
| output_dim_.h_ * |
| output_dim_.w_; |
| for (int i = 0; i < num_tops_; i++) { |
| top_chunk_ids_.push_back( |
| data_manager_->CreateData(top_size)); |
| tops_.push_back( |
| data_manager_->GetData(top_chunk_ids_[i])); |
| top_diff_chunk_ids_.push_back( |
| data_manager_->CreateData(top_size)); |
| top_diffs_.push_back( |
| data_manager_->GetData(top_diff_chunk_ids_[i])); |
| } |
| |
| } |
| } |
| |
| void ComputeOutputDim() { |
| output_dim_.n_ = input_dim_.n_; |
| output_dim_.c_ = input_dim_.c_; |
| output_dim_.h_ = input_dim_.h_; |
| output_dim_.w_ = input_dim_.w_; |
| } |
| |
| void ForwardPropagation() { |
| if (p_dnnmark_->getRunMode() == STANDALONE || |
| !previous_layer_name_.compare("null")) { |
| // Fill the bottom data |
| for (int i = 0; i < num_bottoms_; i++) { |
| bottoms_[i]->Filler(); |
| } |
| } |
| |
| // Dropout forwards |
| ProfilerStart(*(p_dnnmark_->GetHandle()), p_dnnmark_->getRunMode(), |
| layer_id_, p_dnnmark_->GetTimer(), "DropoutFwd"); |
| for (int i = 0; i < num_bottoms_; i++) { |
| dnnmarkDropoutForward( |
| *(p_dnnmark_->GetHandle()), p_dnnmark_->getRunMode(), |
| layer_id_, |
| desc_, |
| bottom_desc_, bottoms_[i]->Get(), |
| top_desc_, tops_[i]->Get(), |
| reserve_space_->Get(), |
| reserve_space_size_ |
| ); |
| } |
| ProfilerStop(*(p_dnnmark_->GetHandle()), p_dnnmark_->getRunMode(), |
| layer_id_, p_dnnmark_->GetTimer(), "DropoutFwd"); |
| } |
| |
| void BackwardPropagation() { |
| if (p_dnnmark_->getRunMode() == STANDALONE || |
| !previous_layer_name_.compare("null")) { |
| // Fill the top and top diff data |
| for (int i = 0; i < num_tops_; i++) { |
| top_diffs_[i]->Filler(); |
| } |
| } |
| |
| // Dropout backwards |
| ProfilerStart(*(p_dnnmark_->GetHandle()), p_dnnmark_->getRunMode(), |
| layer_id_, p_dnnmark_->GetTimer(), "DropoutBwd"); |
| for (int i = 0; i < num_tops_; i++) { |
| dnnmarkDropoutBackward( |
| *(p_dnnmark_->GetHandle()), p_dnnmark_->getRunMode(), |
| layer_id_, |
| desc_, |
| top_desc_, top_diffs_[i]->Get(), |
| bottom_desc_, bottom_diffs_[i]->Get(), |
| reserve_space_->Get(), |
| reserve_space_size_ |
| ); |
| } |
| ProfilerStop(*(p_dnnmark_->GetHandle()), p_dnnmark_->getRunMode(), |
| layer_id_, p_dnnmark_->GetTimer(), "DropoutBwd"); |
| } |
| |
| }; |
| |
| } // namespace dnnmark |
| |
| #endif // CORE_INCLUDE_LAYERS_DROPOUT_LAYER_H_ |