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111 lines
3.3 KiB
111 lines
3.3 KiB
/* Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserved.
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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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http://www.apache.org/licenses/LICENSE-2.0
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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 <set>
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#include <string>
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#include <thread> // NOLINT
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#include <utility>
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#include <vector>
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#include "gflags/gflags.h"
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#include "paddle/fluid/operators/distributed/distributed.h"
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#include "paddle/fluid/operators/distributed/request_handler.h"
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#include "paddle/fluid/operators/distributed/request_handler_impl.h"
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#include "paddle/fluid/operators/distributed/rpc_server.h"
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namespace paddle {
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namespace operators {
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namespace distributed {
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class CollectiveServer;
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class GetMonomerHandler final : public RequestHandler {
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public:
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GetMonomerHandler() : RequestHandler(true) {}
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virtual ~GetMonomerHandler() {}
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bool Handle(const std::string& var_name, framework::Scope* scope,
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framework::Variable* var, framework::Variable** outvar,
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const int trainer_id, const std::string& out_var_name = "",
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const std::string& table_name = "") override {
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VLOG(50) << "GetMonomerHandler recv " << var_name;
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*outvar = scope->FindVar(var_name);
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PADDLE_ENFORCE(outvar != nullptr, "%s not found", var_name);
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return true;
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}
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};
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class GetMonomerBarrierHandler final : public RequestHandler {
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public:
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GetMonomerBarrierHandler() : RequestHandler(true) {}
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virtual ~GetMonomerBarrierHandler() {}
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bool Handle(const std::string& var_name, framework::Scope* scope,
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framework::Variable* var, framework::Variable** outvar,
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const int trainer_id, const std::string& out_var_name = "",
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const std::string& table_name = "") override {
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VLOG(50) << "GetMonomerHandler recv " << var_name;
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rpc_server_->IncreaseVarBarrier(var_name);
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return true;
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}
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};
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class CollectiveServer final {
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public:
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explicit CollectiveServer(const std::string& end_point, int fan_in);
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virtual ~CollectiveServer() {}
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void StartServer();
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static CollectiveServer* GetInstance(const std::string& end_point,
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int fan_in) {
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std::call_once(init_flag_, [&]() {
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if (collective_server_.get() == nullptr) {
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collective_server_.reset(new CollectiveServer(end_point, fan_in));
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collective_server_->StartServer();
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}
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});
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return collective_server_.get();
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}
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std::shared_ptr<RPCServer> GetRPCServer() { return rpc_server_; }
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void Stop();
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private:
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std::unique_ptr<GetMonomerHandler> get_monomer_handler_;
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std::unique_ptr<GetMonomerBarrierHandler> get_barrier_handler_;
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std::shared_ptr<distributed::RPCServer> rpc_server_;
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std::shared_ptr<std::thread> server_thread_;
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std::shared_ptr<std::thread> loop_thread_;
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bool ready_{false};
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static std::once_flag init_flag_;
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static std::shared_ptr<CollectiveServer> collective_server_;
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};
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}; // namespace distributed
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}; // namespace operators
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}; // namespace paddle
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