You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
79 lines
2.1 KiB
79 lines
2.1 KiB
// Copyright (c) 2019 PaddlePaddle Authors. All Rights Reserved.
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
#pragma once
|
|
|
|
#include <memory>
|
|
#include <utility>
|
|
#include <vector>
|
|
#include "paddle/fluid/imperative/layer.h"
|
|
|
|
namespace paddle {
|
|
namespace imperative {
|
|
|
|
class GradientAccumulator {
|
|
public:
|
|
explicit GradientAccumulator(VariableWrapper* var) : var_(var) {}
|
|
|
|
virtual void Add(std::shared_ptr<VariableWrapper> var, size_t trace_id,
|
|
bool unchange_input = false) = 0;
|
|
|
|
virtual ~GradientAccumulator() = default;
|
|
|
|
inline void IncreaseRefCnt() { ++ref_cnt_; }
|
|
|
|
inline size_t RefCnt() const { return ref_cnt_; }
|
|
|
|
protected:
|
|
VariableWrapper* var_;
|
|
size_t ref_cnt_{0};
|
|
};
|
|
|
|
class EagerGradientAccumulator : public GradientAccumulator {
|
|
public:
|
|
using GradientAccumulator::GradientAccumulator;
|
|
|
|
void Add(std::shared_ptr<VariableWrapper> var, size_t trace_id,
|
|
bool unchange_input) override;
|
|
|
|
private:
|
|
size_t cur_cnt_{0};
|
|
};
|
|
|
|
class SortedGradientAccumulator : public GradientAccumulator {
|
|
public:
|
|
using GradientAccumulator::GradientAccumulator;
|
|
|
|
void Add(std::shared_ptr<VariableWrapper> var, size_t trace_id,
|
|
bool unchange_input) override;
|
|
|
|
private:
|
|
struct SavedVarInfo {
|
|
SavedVarInfo(std::shared_ptr<VariableWrapper>&& v, size_t id,
|
|
bool enable_unchange_input)
|
|
: var(std::move(v)),
|
|
trace_id(id),
|
|
unchange_input(enable_unchange_input) {}
|
|
|
|
std::shared_ptr<VariableWrapper> var;
|
|
size_t trace_id;
|
|
bool unchange_input;
|
|
};
|
|
|
|
std::vector<SavedVarInfo> tmp_grad_vars_;
|
|
};
|
|
|
|
} // namespace imperative
|
|
} // namespace paddle
|