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82 lines
2.7 KiB
82 lines
2.7 KiB
// 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 <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/lod_tensor.h"
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#include "paddle/fluid/framework/scope.h"
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#if defined(PADDLE_WITH_NCCL)
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#include "paddle/fluid/framework/details/nccl_op_handle.h"
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#include "paddle/fluid/platform/nccl_helper.h"
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#endif
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namespace paddle {
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namespace framework {
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namespace details {
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#if defined(PADDLE_WITH_NCCL)
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class AllReduceOpHandle : public NCCLOpHandleBase {
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public:
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AllReduceOpHandle(ir::Node *node, const std::vector<Scope *> &local_scopes,
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const std::vector<platform::Place> &places,
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const platform::NCCLCommunicator *ctxs);
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#else
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class AllReduceOpHandle : public OpHandleBase {
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public:
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AllReduceOpHandle(ir::Node *node, const std::vector<Scope *> &local_scopes,
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const std::vector<platform::Place> &places);
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#endif
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std::string Name() const override;
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// Delay and buffer nccl_all_reduce together can significantly increase
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// performance. Disable this feature by returning false.
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bool IsMultiDeviceTransfer() override { return true; };
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protected:
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void RunImpl() override;
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std::vector<Scope *> GetLocalScopes() override { return local_scopes_; }
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std::vector<Scope *> local_scopes_;
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#ifndef PADDLE_WITH_NCCL
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// NCCLOpHandleBase already have these attributes.
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// Will polish it by class inheritance framework.
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std::vector<platform::Place> places_;
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#endif
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#if defined(PADDLE_WITH_NCCL)
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void NCCLAllReduceFunc(
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const std::vector<std::function<void()>> &all_reduce_calls);
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void SyncNCCLAllReduce();
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#endif
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void AllReduceImpl(const std::vector<VarHandle *> &in_var_handles,
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const std::vector<VarHandle *> &out_var_handles);
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void AllReduceFunc(std::vector<const void *> lod_tensor_data,
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const framework::proto::VarType::Type &dtype,
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int64_t numel, const std::vector<platform::Place> &places,
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const std::vector<std::string> &out_var_handles);
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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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