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99 lines
3.3 KiB
99 lines
3.3 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 <condition_variable> // NOLINT
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#include <string>
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#include "gflags/gflags.h"
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#include "paddle/fluid/framework/data_type.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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#include "paddle/fluid/operators/distributed/request_handler.h"
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DECLARE_int32(rpc_deadline);
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namespace paddle {
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namespace operators {
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namespace distributed {
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class RPCClient {
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public:
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RPCClient() {}
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virtual ~RPCClient() {}
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virtual VarHandlePtr AsyncSendVar(const std::string& ep,
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const platform::DeviceContext& ctx,
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const framework::Scope& scope,
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const std::string& var_name,
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int64_t time_out = FLAGS_rpc_deadline) = 0;
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virtual VarHandlePtr AsyncGetVar(const std::string& ep,
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const platform::DeviceContext& ctx,
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const framework::Scope& scope,
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const std::string& var_name,
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int64_t time_out = FLAGS_rpc_deadline) = 0;
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virtual VarHandlePtr AsyncPrefetchVar(
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const std::string& ep, const platform::DeviceContext& ctx,
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const framework::Scope& scope, const std::string& in_var_name,
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const std::string& out_var_name,
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int64_t time_out = FLAGS_rpc_deadline) = 0;
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virtual VarHandlePtr AsyncSendBatchBarrier(
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const std::string& ep, int64_t time_out = FLAGS_rpc_deadline) = 0;
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virtual VarHandlePtr AsyncSendFetchBarrier(
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const std::string& ep, int64_t time_out = FLAGS_rpc_deadline) = 0;
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virtual VarHandlePtr AsyncCheckpointNotify(
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const std::string& ep, const std::string& dir,
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int64_t time_out = FLAGS_rpc_deadline) = 0;
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virtual VarHandlePtr AsyncSendComplete(
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const std::string& ep, int64_t time_out = FLAGS_rpc_deadline) = 0;
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// Complete tells all the pserver instances that finishe the training,
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// the pserver can reduce it's barrier count, and continue to train
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// with other trainers.
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virtual void SendComplete() = 0;
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virtual bool Wait() = 0;
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template <typename T>
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static RPCClient* GetInstance() {
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std::call_once(init_flag_, &RPCClient::Init<T>);
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return rpc_client_.get();
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}
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// Init is called by GetInstance.
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template <typename T>
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static void Init() {
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if (rpc_client_.get() == nullptr) {
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rpc_client_.reset(new T());
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rpc_client_->InitImpl();
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}
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}
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protected:
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virtual void InitImpl() {}
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private:
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static std::once_flag init_flag_;
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static std::unique_ptr<RPCClient> rpc_client_;
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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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