Luo Tao
7 years ago
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e8e8ad0491
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// Copyright (c) 2018 PaddlePaddle Authors. All Rights Reserved.
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//
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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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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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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 "paddle/fluid/framework/details/scope_buffered_ssa_graph_executor.h"
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#include <string>
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#include <vector>
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#include "paddle/fluid/framework/executor.h"
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namespace paddle {
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namespace framework {
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namespace details {
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ScopeBufferedSSAGraphExecutor::ScopeBufferedSSAGraphExecutor(
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ExecutionStrategy strategy, std::vector<Scope *> local_scopes,
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std::vector<VariableInfo> var_infos, std::vector<platform::Place> places,
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std::unique_ptr<SSAGraphExecutor> &&underlying_executor)
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: strategy_(std::move(strategy)),
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underlying_executor_(std::move(underlying_executor)),
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local_scopes_(std::move(local_scopes)),
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var_infos_(std::move(var_infos)),
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places_(std::move(places)) {}
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FeedFetchList ScopeBufferedSSAGraphExecutor::Run(
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const std::vector<std::string> &fetch_tensors) {
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if (drop_scope_counter_ == 0) {
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// Create local scopes.
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for (auto it = local_scopes_.rbegin(); it != local_scopes_.rend(); ++it) {
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auto &scope = *it;
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Scope &local_scope = scope->NewScope();
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*scope->Var(details::kLocalExecScopeName)->GetMutable<Scope *>() =
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&local_scope;
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for (auto &info : var_infos_) {
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if (scope->FindVar(info.name_) != nullptr) {
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continue;
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}
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if (info.persistable_) { // Persistable
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InitializeVariable(scope->Var(info.name_), info.type_);
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} else {
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InitializeVariable(local_scope.Var(info.name_), info.type_);
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}
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}
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}
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}
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auto fetch_data = underlying_executor_->Run(fetch_tensors);
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drop_scope_counter_ += 1;
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if (!fetch_tensors.empty() ||
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drop_scope_counter_ == strategy_.num_iteration_per_drop_scope_) {
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drop_scope_counter_ = 0;
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// Wait All computational streams
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for (auto p : places_) {
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platform::DeviceContextPool::Instance().Get(p)->Wait();
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}
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for (auto &scope : local_scopes_) {
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auto &local_scope =
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*scope->Var(details::kLocalExecScopeName)->GetMutable<Scope *>();
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scope->DeleteScope(local_scope);
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}
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}
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return fetch_data;
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}
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} // namespace details
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} // namespace framework
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} // namespace paddle
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@ -0,0 +1,53 @@
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// Copyright (c) 2018 PaddlePaddle Authors. All Rights Reserved.
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//
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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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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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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 <vector>
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#include "paddle/fluid/framework/details/execution_strategy.h"
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#include "paddle/fluid/framework/details/ssa_graph_executor.h"
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#include "paddle/fluid/framework/scope.h"
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#include "paddle/fluid/platform/place.h"
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namespace paddle {
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namespace framework {
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namespace details {
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struct VariableInfo {
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std::string name_;
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proto::VarType::Type type_;
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bool persistable_;
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};
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class ScopeBufferedSSAGraphExecutor : public SSAGraphExecutor {
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public:
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ScopeBufferedSSAGraphExecutor(
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ExecutionStrategy strategy, std::vector<Scope*> local_scopes,
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std::vector<VariableInfo> var_infos, std::vector<platform::Place> places,
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std::unique_ptr<SSAGraphExecutor>&& underlying_executor);
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FeedFetchList Run(const std::vector<std::string>& fetch_tensors) override;
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private:
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size_t drop_scope_counter_{0};
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ExecutionStrategy strategy_;
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std::unique_ptr<SSAGraphExecutor> underlying_executor_;
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std::vector<Scope*> local_scopes_;
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std::vector<VariableInfo> var_infos_;
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std::vector<platform::Place> places_;
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};
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} // namespace details
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} // namespace framework
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} // namespace paddle
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