Xin Pan
7 years ago
parent
10786a243e
commit
64eaa4c829
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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/ssa_graph.h"
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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 <map>
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#include <string>
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#include <vector>
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#include "paddle/fluid/framework/details/op_handle_base.h"
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#include "paddle/fluid/framework/details/var_handle.h"
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namespace paddle {
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namespace framework {
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namespace details {
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// A SSA graph used by parallel executor.
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struct SSAGraph {
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// all variable in each devices.
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// The outside vector is the device vector. Each element of this vector is a
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// map from variable name to variables. The variables, who have the same name,
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// will have a different version. The offset in the
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// `std::vector<std::unique_ptr<VarHandle>>` is the version of varaibles.
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std::vector<
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std::unordered_map<std::string, std::vector<std::unique_ptr<VarHandle>>>>
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vars_;
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// aux variables to represent dependency. Useful to resolve data hazard.
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std::unordered_set<std::unique_ptr<VarHandleBase>> dep_vars_;
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// all operators. NOTE that even we use a vector here, the operators is
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// unordered.
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std::vector<std::unique_ptr<OpHandleBase>> ops_;
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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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