fix sendrecv port bind

paddle/fluid/operators/detail/grpc_server.cc

@@ -186,7 +186,8 @@ void AsyncGRPCServer::WaitClientGet(int count) {
 
 void AsyncGRPCServer::RunSyncUpdate() {
   ::grpc::ServerBuilder builder;
-  builder.AddListeningPort(address_, ::grpc::InsecureServerCredentials());
+  builder.AddListeningPort(address_, ::grpc::InsecureServerCredentials(),
+                           &selected_port_);
   builder.SetMaxSendMessageSize(std::numeric_limits<int>::max());
   builder.SetMaxReceiveMessageSize(std::numeric_limits<int>::max());
   builder.RegisterService(&service_);
@@ -196,7 +197,8 @@ void AsyncGRPCServer::RunSyncUpdate() {
   cq_prefetch_ = builder.AddCompletionQueue();
 
   server_ = builder.BuildAndStart();
-  LOG(INFO) << "Server listening on " << address_ << std::endl;
+  LOG(INFO) << "Server listening on " << address_
+            << " selected port: " << selected_port_;
 
   std::function<void()> send_register =
       std::bind(&AsyncGRPCServer::TryToRegisterNewSendOne, this);
@@ -242,6 +244,9 @@ void AsyncGRPCServer::TryToRegisterNewSendOne() {
     VLOG(3) << "shutdown, do not TryToRegisterNewSendOne";
     return;
   }
+  while (scope_ == nullptr) {
+    sleep(0.01);
+  }
   RequestSend* send = new RequestSend(&service_, cq_send_.get(), scope_,
                                       &var_recv_queue_, dev_ctx_);
   VLOG(4) << "Create RequestSend status:" << send->Status();

paddle/fluid/operators/detail/grpc_server.h

@@ -62,6 +62,8 @@ class AsyncGRPCServer final {
 
   void SetExecutor(framework::Executor *executor) { executor_ = executor; }
 
+  int GetSelectedPort() { return selected_port_; }
+
   const ReceivedMessage Get() { return this->var_recv_queue_.Pop(); }
 
   void Push(const std::string &msg_name) {
@@ -109,6 +111,7 @@ class AsyncGRPCServer final {
   int prefetch_blk_id_;
   framework::ProgramDesc *program_;
   framework::Executor *executor_;
+  int selected_port_;
 };
 
 };  // namespace detail

paddle/fluid/operators/listen_and_serv_op.cc

@@ -12,185 +12,145 @@ 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. */
 
-#include <stdint.h>
 #include <ostream>
+#include <thread>
 
-#include "paddle/fluid/framework/executor.h"
-#include "paddle/fluid/framework/lod_tensor.h"
-#include "paddle/fluid/framework/op_registry.h"
-#include "paddle/fluid/framework/threadpool.h"
-#include "paddle/fluid/operators/detail/grpc_server.h"
+#include "paddle/fluid/operators/listen_and_serv_op.h"
 
 namespace paddle {
 namespace operators {
 
-constexpr char kOptimizeBlock[] = "OptimizeBlock";
-
 void RunServer(std::shared_ptr<detail::AsyncGRPCServer> service) {
   service->RunSyncUpdate();
   VLOG(4) << "RunServer thread end";
 }
 
-static void CreateTensorFromMessageType(framework::Variable *var,
-                                        sendrecv::VarType var_type) {
-  if (var_type == sendrecv::VarType::LOD_TENSOR) {
-    var->GetMutable<framework::LoDTensor>();
-  } else if (var_type == sendrecv::VarType::SELECTED_ROWS) {
-    var->GetMutable<framework::SelectedRows>();
-  } else {
-    PADDLE_THROW(
-        "VariableMessage type %d is not in "
-        "[LoDTensor, SelectedRows]",
-        var_type);
-  }
+ListenAndServOp::ListenAndServOp(const std::string &type,
+                                 const framework::VariableNameMap &inputs,
+                                 const framework::VariableNameMap &outputs,
+                                 const framework::AttributeMap &attrs)
+    : OperatorBase(type, inputs, outputs, attrs) {}
+
+int ListenAndServOp::GetSelectedPort() {
+  return rpc_service_->GetSelectedPort();
 }
 
-static void ParallelExecuteBlocks(const std::vector<size_t> &parallel_blkids,
-                                  framework::Executor *executor,
-                                  framework::ProgramDesc *program,
-                                  framework::Scope *scope) {
-  std::vector<std::future<void>> fs;
-  for (size_t idx : parallel_blkids) {
-    fs.push_back(framework::Async([&executor, &program, &scope, idx]() {
-      int run_block = idx;  // thread local
-      try {
-        executor->Run(*program, scope, run_block, false, false);
-      } catch (std::exception &e) {
-        LOG(ERROR) << "run sub program error " << e.what();
-      }
-    }));
-  }
-  for (size_t i = 0; i < fs.size(); ++i) fs[i].wait();
+void ListenAndServOp::Stop() {
+  rpc_service_->Push(LISTEN_TERMINATE_MESSAGE);
+  server_thread_->join();
 }
 
-class ListenAndServOp : public framework::OperatorBase {
- public:
-  ListenAndServOp(const std::string &type,
-                  const framework::VariableNameMap &inputs,
-                  const framework::VariableNameMap &outputs,
-                  const framework::AttributeMap &attrs)
-      : OperatorBase(type, inputs, outputs, attrs) {
-    if (!rpc_service_) {
-      std::string endpoint = Attr<std::string>("endpoint");
-      rpc_service_.reset(new detail::AsyncGRPCServer(endpoint));
-      server_thread_.reset(new std::thread(RunServer, rpc_service_));
-    }
-  }
+void ListenAndServOp::RunImpl(const framework::Scope &scope,
+                              const platform::Place &dev_place) const {
+  platform::DeviceContextPool &pool = platform::DeviceContextPool::Instance();
+  auto &dev_ctx = *pool.Get(dev_place);
+  framework::Scope &recv_scope = scope.NewScope();
+  LOG(INFO) << "created recv scope: " << &recv_scope;
 
-  void Stop() override {
-    rpc_service_->Push(LISTEN_TERMINATE_MESSAGE);
-    server_thread_->join();
+  if (!rpc_service_) {
+    std::string endpoint = Attr<std::string>("endpoint");
+    rpc_service_.reset(new detail::AsyncGRPCServer(endpoint));
   }
 
-  void RunImpl(const framework::Scope &scope,
-               const platform::Place &dev_place) const override {
-    platform::DeviceContextPool &pool = platform::DeviceContextPool::Instance();
-    auto &dev_ctx = *pool.Get(dev_place);
-    framework::Scope &recv_scope = scope.NewScope();
-
-    // FIXME(Yancey1989): initialize rpc server with lazy mode.
-    rpc_service_->SetScope(&recv_scope);
-    rpc_service_->SetDevCtx(&dev_ctx);
-    auto ins = Inputs("X");
-    auto fan_in = Attr<int>("Fanin");
-
-    auto *block = Attr<framework::BlockDesc *>(kOptimizeBlock);
-    auto *program = block->Program();
-    int num_blocks = program->Size();
-    PADDLE_ENFORCE_GE(num_blocks, 2,
-                      "server program should have at least 2 blocks");
-
-    framework::Executor executor(dev_place);
-
-    // TODO(qiao) set proper fields for table lookup and update
-    rpc_service_->SetExecutor(&executor);
-    rpc_service_->SetPrefetchBlkdId(0);
-    rpc_service_->SetProgram(program);
-
-    // TODO(typhoonzero): change this to a while_op for every cluster-batch.
-    bool exit_flag = false;
-    // Record received sparse variables, so that
-    // we could reset those after execute optimize program
-    std::vector<framework::Variable *> sparse_vars;
-    while (!exit_flag) {
-      // Get from multiple trainers, we don't care about the order in which
-      // the gradients arrives, just add suffix 0~n and merge the gradient.
-      rpc_service_->SetCond(0);
-      size_t recv_var_cnt = 0;
-      int batch_barrier = 0;
-      while (batch_barrier != fan_in) {
-        const detail::ReceivedMessage v = rpc_service_->Get();
-        auto recv_var_name = v.first;
-        if (recv_var_name == LISTEN_TERMINATE_MESSAGE) {
-          LOG(INFO) << "received terminate message and exit";
-          exit_flag = true;
-          break;
-        } else if (recv_var_name == BATCH_BARRIER_MESSAGE) {
-          VLOG(3) << "recv batch barrier message";
-          batch_barrier++;
-          continue;
-        } else {
-          VLOG(3) << "received grad: " << recv_var_name;
-          recv_var_cnt++;
-          auto var = v.second->GetVar();
-          if (var == nullptr) {
-            LOG(ERROR) << "Can not find server side var: " << recv_var_name;
-            PADDLE_THROW("Can not find server side var");
-          }
-          if (var->IsType<framework::SelectedRows>()) {
-            sparse_vars.push_back(var);
-          }
-        }
-      }
-      if (exit_flag) {
-        rpc_service_->SetCond(1);
-        rpc_service_->ShutDown();
+  auto ins = Inputs("X");
+  auto fan_in = Attr<int>("Fanin");
+  auto *block = Attr<framework::BlockDesc *>(kOptimizeBlock);
+  auto *program = block->Program();
+  size_t num_blocks = program->Size();
+  PADDLE_ENFORCE_GE(num_blocks, 2,
+                    "server program should have at least 2 blocks");
+
+  framework::Executor executor(dev_place);
+
+  // FIXME(Yancey1989): initialize rpc server with lazy mode.
+  rpc_service_->SetScope(&recv_scope);
+  rpc_service_->SetDevCtx(&dev_ctx);
+  // TODO(qiao) set proper fields for table lookup and update
+  rpc_service_->SetExecutor(&executor);
+  rpc_service_->SetPrefetchBlkdId(0);
+  rpc_service_->SetProgram(program);
+  // start the server listening after all member initialized.
+  server_thread_.reset(new std::thread(RunServer, rpc_service_));
+  // FIXME(typhoonzero): do we need to wait until the server port is ready?
+  sleep(5);
+
+  // TODO(typhoonzero): change this to a while_op for every cluster-batch.
+  bool exit_flag = false;
+  // Record received sparse variables, so that
+  // we could reset those after execute optimize program
+  std::vector<framework::Variable *> sparse_vars;
+  while (!exit_flag) {
+    // Get from multiple trainers, we don't care about the order in which
+    // the gradients arrives, just add suffix 0~n and merge the gradient.
+    rpc_service_->SetCond(0);
+    size_t recv_var_cnt = 0;
+    int batch_barrier = 0;
+    while (batch_barrier != fan_in) {
+      const detail::ReceivedMessage v = rpc_service_->Get();
+      auto recv_var_name = v.first;
+      if (recv_var_name == LISTEN_TERMINATE_MESSAGE) {
+        LOG(INFO) << "received terminate message and exit";
+        exit_flag = true;
         break;
-      }
-
-      // NOTE: if is_gpu_place, CUDA kernels are laugched by multiple threads
-      // and this will still work.
-
-      // The optimize blocks which have the same parent ID would run parallel
-      // TODO(Yancey1989): need to use ParallelExecutor for future
-      size_t last_parent_blkid = program->Block(1).Parent();
-      std::vector<size_t> parallel_blkids;
-      parallel_blkids.push_back(1);
-      double ts = detail::GetTimestamp();
-      for (size_t blkid = 2; blkid < num_blocks; ++blkid) {
-        if (program->Block(blkid).Parent() != last_parent_blkid) {
-          for (size_t idx : parallel_blkids) VLOG(3) << idx;
-          ParallelExecuteBlocks(parallel_blkids, &executor, program,
-                                &recv_scope);
-          parallel_blkids.clear();
-          last_parent_blkid = program->Block(blkid).Parent();
+      } else if (recv_var_name == BATCH_BARRIER_MESSAGE) {
+        VLOG(3) << "recv batch barrier message";
+        batch_barrier++;
+        continue;
+      } else {
+        VLOG(3) << "received grad: " << recv_var_name;
+        recv_var_cnt++;
+        auto var = v.second->GetVar();
+        if (var == nullptr) {
+          LOG(ERROR) << "Can not find server side var: " << recv_var_name;
+          PADDLE_THROW("Can not find server side var");
+        }
+        if (var->IsType<framework::SelectedRows>()) {
+          sparse_vars.push_back(var);
         }
-        parallel_blkids.push_back(blkid);
-      }
-      ParallelExecuteBlocks(parallel_blkids, &executor, program, &recv_scope);
-
-      VLOG(3) << "run all blocks spent " << detail::GetTimestamp() - ts
-              << "(ms)";
-
-      // Reset the received sparse variables, the sum operator would not
-      // sum the input sparse variables which rows is empty at the next
-      // mini-batch.
-      // TODO(Yancey1989): move the reset action into an operator, we couldn't
-      // have any hide logic in the operator.
-      for (auto &var : sparse_vars) {
-        var->GetMutable<framework::SelectedRows>()->mutable_rows()->clear();
       }
+    }
+    if (exit_flag) {
       rpc_service_->SetCond(1);
-      // FIXME(typhoonzero): use another condition to sync wait clients get.
-      rpc_service_->WaitClientGet(fan_in);
-      sparse_vars.clear();
-    }  // while(true)
-  }
+      rpc_service_->ShutDown();
+      break;
+    }
 
- protected:
-  std::shared_ptr<detail::AsyncGRPCServer> rpc_service_;
-  std::shared_ptr<std::thread> server_thread_;
-};
+    // NOTE: if is_gpu_place, CUDA kernels are laugched by multiple threads
+    // and this will still work.
+
+    // The optimize blocks which have the same parent ID would run parallel
+    // TODO(Yancey1989): need to use ParallelExecutor for future
+    int32_t last_parent_blkid = program->Block(1).Parent();
+    std::vector<size_t> parallel_blkids;
+    parallel_blkids.push_back(1);
+    double ts = detail::GetTimestamp();
+    for (size_t blkid = 2; blkid < num_blocks; ++blkid) {
+      if (program->Block(blkid).Parent() != last_parent_blkid) {
+        for (size_t idx : parallel_blkids) VLOG(3) << idx;
+        ParallelExecuteBlocks(parallel_blkids, &executor, program, &recv_scope);
+        parallel_blkids.clear();
+        last_parent_blkid = program->Block(blkid).Parent();
+      }
+      parallel_blkids.push_back(blkid);
+    }
+    ParallelExecuteBlocks(parallel_blkids, &executor, program, &recv_scope);
+
+    VLOG(3) << "run all blocks spent " << detail::GetTimestamp() - ts << "(ms)";
+
+    // Reset the received sparse variables, the sum operator would not
+    // sum the input sparse variables which rows is empty at the next
+    // mini-batch.
+    // TODO(Yancey1989): move the reset action into an operator, we couldn't
+    // have any hide logic in the operator.
+    for (auto &var : sparse_vars) {
+      var->GetMutable<framework::SelectedRows>()->mutable_rows()->clear();
+    }
+    rpc_service_->SetCond(1);
+    // FIXME(typhoonzero): use another condition to sync wait clients get.
+    rpc_service_->WaitClientGet(fan_in);
+    sparse_vars.clear();
+  }  // while(true)
+}
 
 class ListenAndServOpMaker : public framework::OpProtoAndCheckerMaker {
  public:

paddle/fluid/operators/listen_and_serv_op.h

+/* Copyright (c) 2016 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 <stdint.h>
+#include <ostream>
+
+#include "paddle/fluid/framework/executor.h"
+#include "paddle/fluid/framework/lod_tensor.h"
+#include "paddle/fluid/framework/op_registry.h"
+#include "paddle/fluid/framework/threadpool.h"
+#include "paddle/fluid/operators/detail/grpc_server.h"
+
+namespace paddle {
+namespace operators {
+
+constexpr char kOptimizeBlock[] = "OptimizeBlock";
+
+void RunServer(std::shared_ptr<detail::AsyncGRPCServer> service);
+
+static void CreateTensorFromMessageType(framework::Variable *var,
+                                        sendrecv::VarType var_type) {
+  if (var_type == sendrecv::VarType::LOD_TENSOR) {
+    var->GetMutable<framework::LoDTensor>();
+  } else if (var_type == sendrecv::VarType::SELECTED_ROWS) {
+    var->GetMutable<framework::SelectedRows>();
+  } else {
+    PADDLE_THROW(
+        "VariableMessage type %d is not in "
+        "[LoDTensor, SelectedRows]",
+        var_type);
+  }
+}
+
+static void ParallelExecuteBlocks(const std::vector<size_t> &parallel_blkids,
+                                  framework::Executor *executor,
+                                  framework::ProgramDesc *program,
+                                  framework::Scope *scope) {
+  std::vector<std::future<void>> fs;
+  for (size_t idx : parallel_blkids) {
+    fs.push_back(framework::Async([&executor, &program, &scope, idx]() {
+      int run_block = idx;  // thread local
+      try {
+        executor->Run(*program, scope, run_block, false, false);
+      } catch (std::exception &e) {
+        LOG(ERROR) << "run sub program error " << e.what();
+      }
+    }));
+  }
+  for (size_t i = 0; i < fs.size(); ++i) fs[i].wait();
+}
+
+class ListenAndServOp : public framework::OperatorBase {
+ public:
+  ListenAndServOp(const std::string &type,
+                  const framework::VariableNameMap &inputs,
+                  const framework::VariableNameMap &outputs,
+                  const framework::AttributeMap &attrs);
+
+  int GetSelectedPort();
+
+  void Stop() override;
+
+  void RunImpl(const framework::Scope &scope,
+               const platform::Place &dev_place) const override;
+
+ protected:
+  mutable std::shared_ptr<detail::AsyncGRPCServer> rpc_service_;
+  mutable std::shared_ptr<std::thread> server_thread_;
+};
+
+}  // namespace operators
+}  // namespace paddle

paddle/fluid/operators/send_recv_op_test.cc

@@ -20,6 +20,7 @@ limitations under the License. */
 #include "paddle/fluid/framework/op_registry.h"
 #include "paddle/fluid/framework/operator.h"
 #include "paddle/fluid/framework/program_desc.h"
+#include "paddle/fluid/operators/listen_and_serv_op.h"
 #include "paddle/fluid/operators/math/math_function.h"
 #include "paddle/fluid/operators/math/selected_rows_functor.h"
 #include "paddle/fluid/string/printf.h"
@@ -34,6 +35,7 @@ namespace m = paddle::operators::math;
 
 // global for simplicity.
 std::unique_ptr<f::OperatorBase> listen_and_serv_op;
+int selected_port;
 
 void InitTensorsInScope(f::Scope &scope, p::CPUPlace &place) {
   p::CPUDeviceContext ctx(place);
@@ -128,14 +130,16 @@ void StartServerNet(bool is_sparse) {
   AddOp("sum", {{"X", {"x0", "x1"}}}, {{"Out", {"Out"}}}, {}, optimize_block);
 
   f::AttributeMap attrs;
-  attrs.insert({"endpoint", std::string("127.0.0.1:6174")});
+  attrs.insert({"endpoint", std::string("127.0.0.1:0")});
   attrs.insert({"Fanin", 1});
   attrs.insert({"ParamList", std::vector<std::string>({"Out"})});
   attrs.insert({"GradList", std::vector<std::string>({"x1"})});
   attrs.insert({"OptimizeBlock", optimize_block});
   listen_and_serv_op =
       f::OpRegistry::CreateOp("listen_and_serv", {{"X", {"x1"}}}, {}, attrs);
+  LOG(INFO) << "selected port before run " << selected_port;
   listen_and_serv_op->Run(scope, place);
+  LOG(INFO) << "server exit";
 }
 
 TEST(SendRecvOp, CPUDense) {
@@ -149,12 +153,19 @@ TEST(SendRecvOp, CPUDense) {
   scope.Var("RPC_CLIENT_VAR");
 
   f::AttributeMap attrs;
-  attrs.insert({"endpoints", std::vector<std::string>({"127.0.0.1:6174"})});
-  attrs.insert({"epmap", std::vector<std::string>({"127.0.0.1:6174"})});
+  selected_port = static_cast<paddle::operators::ListenAndServOp *>(
+                      listen_and_serv_op.get())
+                      ->GetSelectedPort();
+  LOG(INFO) << "selected port " << selected_port;
+  std::string endpoint = paddle::string::Sprintf("127.0.0.1:%d", selected_port);
+  attrs.insert({"endpoints", std::vector<std::string>({endpoint})});
+  attrs.insert({"epmap", std::vector<std::string>({endpoint})});
   auto send_op = f::OpRegistry::CreateOp(
       "send", {{"X", {"x1"}}},
       {{"Out", {"Out"}}, {"RPCClient", {"RPC_CLIENT_VAR"}}}, attrs);
+  LOG(INFO) << "before run " << endpoint;
   send_op->Run(scope, place);
+  LOG(INFO) << "end run";
 
   auto in_var = scope.Var("x1");
   auto tensor = in_var->GetMutable<f::LoDTensor>();
@@ -167,6 +178,7 @@ TEST(SendRecvOp, CPUDense) {
   for (int64_t i = 0; i < target->numel(); ++i) {
     EXPECT_EQ(expected[i] * 2, actual[i]);
   }
+  LOG(INFO) << "before stop";
   listen_and_serv_op->Stop();
   server_thread.join();
   listen_and_serv_op.reset(nullptr);
@@ -182,8 +194,13 @@ TEST(SendRecvOp, CPUSparse) {
   InitSelectedRowsInScope(scope, place);
   scope.Var("RPC_CLIENT_VAR");
   f::AttributeMap attrs;
-  attrs.insert({"endpoints", std::vector<std::string>({"127.0.0.1:6174"})});
-  attrs.insert({"epmap", std::vector<std::string>({"127.0.0.1:6174"})});
+  selected_port = static_cast<paddle::operators::ListenAndServOp *>(
+                      listen_and_serv_op.get())
+                      ->GetSelectedPort();
+  LOG(INFO) << "selected port " << selected_port;
+  std::string endpoint = paddle::string::Sprintf("127.0.0.1:%d", selected_port);
+  attrs.insert({"endpoints", std::vector<std::string>({endpoint})});
+  attrs.insert({"epmap", std::vector<std::string>({endpoint})});
   auto send_op = f::OpRegistry::CreateOp(
       "send", {{"X", {"x1"}}},
       {{"Out", {"Out"}}, {"RPCClient", {"RPC_CLIENT_VAR"}}}, attrs);