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142 lines
4.6 KiB
142 lines
4.6 KiB
/* Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserve.
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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 "paddle/framework/lod_tensor.h"
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#include "paddle/framework/scope.h"
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#include "paddle/framework/selected_rows.h"
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#include "paddle/framework/var_type.h"
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#include "paddle/operators/detail/simple_block_queue.h"
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#include "paddle/operators/detail/send_recv.grpc.pb.h"
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#include "paddle/operators/detail/send_recv.pb.h"
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#include <grpc++/grpc++.h>
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using grpc::Channel;
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using grpc::Server;
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using grpc::ServerContext;
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using grpc::ServerReader;
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using grpc::ServerBuilder;
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using grpc::ClientContext;
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using grpc::ClientReader;
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using grpc::ClientReaderWriter;
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using grpc::ClientWriter;
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using grpc::Status;
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using sendrecv::SendRecvService;
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using sendrecv::VariableMessage;
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using sendrecv::VoidMessage;
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namespace paddle {
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namespace operators {
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namespace detail {
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typedef std::pair<std::string, sendrecv::VariableMessage> MessageWithName;
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class SendRecvServerImpl final : public SendRecvService::Service {
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public:
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explicit SendRecvServerImpl() {}
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Status SendVariable(ServerContext *context, const VariableMessage *in_var,
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VoidMessage *out_var) override;
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Status GetVariable(ServerContext *context, const VariableMessage *in_var,
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VariableMessage *out_var) override;
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Status Wait(ServerContext *context, const VoidMessage *in_var,
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VoidMessage *out_var) override;
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void Reset();
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void Done();
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void SetScope(framework::Scope *scope) { scope_ = scope; };
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const MessageWithName Get() { return this->var_recv_queue_.Pop(); }
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void Push(const MessageWithName &msg) { this->var_recv_queue_.Push(msg); }
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private:
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// received variable from RPC, operators fetch variable from this queue.
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SimpleBlockQueue<MessageWithName> var_recv_queue_;
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framework::Scope *scope_;
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// condition of the sub program
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std::mutex mutex_;
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bool done_;
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std::condition_variable condition_;
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};
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// RPCClient is a class to send tensors to pserver sub-network
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// using different hashing methods.
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class RPCClient {
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public:
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RPCClient(std::shared_ptr<Channel> channel)
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: stub_(SendRecvService::NewStub(channel)) {}
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bool SendVariable(const framework::Scope &scope, const std::string &inname);
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bool GetVariable(const framework::Scope &scope, const std::string &outname);
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void Wait();
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private:
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std::unique_ptr<SendRecvService::Stub> stub_;
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};
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inline void SerializeToMessage(const std::string &name,
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const framework::Variable *var,
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const platform::DeviceContext &ctx,
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VariableMessage *msg) {
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msg->set_varname(name);
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std::ostringstream oss;
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switch (framework::ToVarType(var->Type())) {
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case framework::proto::VarDesc_VarType_LOD_TENSOR:
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msg->set_type(sendrecv::VarType::LOD_TENSOR);
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framework::SerializeToStream(oss, var->Get<framework::LoDTensor>(), ctx);
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break;
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case framework::proto::VarDesc_VarType_SELECTED_ROWS:
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msg->set_type(sendrecv::VarType::SELECTED_ROWS);
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framework::SerializeToStream(oss, var->Get<framework::SelectedRows>(),
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ctx);
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break;
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default: {
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PADDLE_THROW("Serialize does not support type: %s",
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typeid(var->Type()).name());
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break;
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}
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}
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msg->set_serialized(oss.str());
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}
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inline void DeserializeFromMessage(const VariableMessage &msg,
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const platform::DeviceContext &ctx,
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framework::Variable *var) {
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using namespace paddle::framework::proto;
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std::istringstream iss(msg.serialized());
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switch (msg.type()) {
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case sendrecv::VarType::LOD_TENSOR:
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DeserializeFromStream(iss, var->GetMutable<framework::LoDTensor>(), ctx);
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break;
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case sendrecv::VarType::SELECTED_ROWS: {
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DeserializeFromStream(iss, var->GetMutable<framework::SelectedRows>(),
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ctx);
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break;
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}
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default: {
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PADDLE_THROW("Deserialize does not support type: %s",
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typeid(var->Type()).name());
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break;
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}
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}
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}
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} // namespace detail
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} // namespace operators
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} // namespace paddle
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