diff --git a/mindspore/ccsrc/CMakeLists.txt b/mindspore/ccsrc/CMakeLists.txt
index 8109e608c5c..cc5845cbf15 100644
--- a/mindspore/ccsrc/CMakeLists.txt
+++ b/mindspore/ccsrc/CMakeLists.txt
@@ -277,10 +277,11 @@ endif ()
 
 if (USE_GLOG)
     target_link_libraries(inference PRIVATE mindspore::glog)
-else()
-    if (CMAKE_SYSTEM_NAME MATCHES "Linux")
-        target_link_options(inference PRIVATE -Wl,-init,mindspore_log_init)
-    elseif (CMAKE_SYSTEM_NAME MATCHES "Darwin")
-        set_target_properties(inference PROPERTIES MACOSX_RPATH ON)
-    endif ()
 endif()
+
+if (CMAKE_SYSTEM_NAME MATCHES "Linux")
+    target_link_options(inference PRIVATE -Wl,-init,common_log_init)
+elseif (CMAKE_SYSTEM_NAME MATCHES "Darwin")
+    set_target_properties(inference PROPERTIES MACOSX_RPATH ON)
+endif ()
+
diff --git a/mindspore/ccsrc/session/session.cc b/mindspore/ccsrc/session/session.cc
index 90e02b37ff1..ae70fc77aa5 100644
--- a/mindspore/ccsrc/session/session.cc
+++ b/mindspore/ccsrc/session/session.cc
@@ -33,9 +33,14 @@
 namespace py = pybind11;
 namespace mindspore::inference {
 std::shared_ptr<FuncGraph> LoadModel(const char *model_buf, size_t size, const std::string &device) {
-  inference::Session::RegAllOp();
-  auto anf_graph = lite::AnfConverter::RunAnfConverter(model_buf, size);
-  return anf_graph;
+  try {
+    inference::Session::RegAllOp();
+    auto anf_graph = lite::AnfConverter::RunAnfConverter(model_buf, size);
+    return anf_graph;
+  } catch (std::exception &e) {
+    MS_LOG(ERROR) << "Inference LoadModel failed";
+    return nullptr;
+  }
 }
 
 void ExitInference() {
@@ -51,12 +56,17 @@ void ExitInference() {
 }
 
 std::shared_ptr<MSSession> MSSession::CreateSession(const std::string &device, uint32_t device_id) {
-  auto session = std::make_shared<inference::Session>();
-  auto ret = session->Init(device, device_id);
-  if (ret != 0) {
+  try {
+    auto session = std::make_shared<inference::Session>();
+    auto ret = session->Init(device, device_id);
+    if (ret != 0) {
+      return nullptr;
+    }
+    return session;
+  } catch (std::exception &e) {
+    MS_LOG(ERROR) << "Inference CreatSession failed";
     return nullptr;
   }
-  return session;
 }
 
 void Session::RegAllOp() {
@@ -113,47 +123,71 @@ void Session::RegAllOp() {
 
 uint32_t Session::CompileGraph(std::shared_ptr<FuncGraph> funcGraphPtr) {
   MS_ASSERT(session_impl_ != nullptr);
-  auto graph_id = session_impl_->CompileGraph(NOT_NULL(funcGraphPtr));
-  py::gil_scoped_release gil_release;
-  return graph_id;
+  try {
+    auto graph_id = session_impl_->CompileGraph(NOT_NULL(funcGraphPtr));
+    py::gil_scoped_release gil_release;
+    return graph_id;
+  } catch (std::exception &e) {
+    MS_LOG(ERROR) << "Inference CompileGraph failed";
+    return static_cast<uint32_t>(-1);
+  }
 }
 
 MultiTensor Session::RunGraph(uint32_t graph_id, const std::vector<std::shared_ptr<inference::MSTensor>> &inputs) {
-  std::vector<tensor::TensorPtr> inTensors;
-  inTensors.resize(inputs.size());
-  bool has_error = false;
-  std::transform(inputs.begin(), inputs.end(), inTensors.begin(),
-                 [&has_error](const std::shared_ptr<inference::MSTensor> &tensor_ptr) -> tensor::TensorPtr {
-                   if (tensor_ptr == nullptr) {
-                     MS_LOG(WARNING) << "input MSTensor is nullptr, return nullptr";
-                     has_error = true;
-                     return nullptr;
-                   }
-                   auto tensor = static_cast<inference::Tensor *>(tensor_ptr.get());
-                   if (tensor == nullptr) {
-                     MS_LOG(ERROR) << "Can not cast input MSTensor to tensor";
-                     has_error = true;
-                     return nullptr;
-                   }
-                   return tensor->tensor();
-                 });
-  if (has_error) {
-    MS_LOG(ERROR) << "Init Tensor failed, returning empty result";
-    std::vector<std::shared_ptr<inference::MSTensor>> multiTensor;
-    return multiTensor;
+  try {
+    std::vector<tensor::TensorPtr> inTensors;
+    inTensors.resize(inputs.size());
+    bool has_error = false;
+    std::transform(inputs.begin(), inputs.end(), inTensors.begin(),
+                   [&has_error](const std::shared_ptr<inference::MSTensor> &tensor_ptr) -> tensor::TensorPtr {
+                     if (tensor_ptr == nullptr) {
+                       MS_LOG(WARNING) << "input MSTensor is nullptr, return nullptr";
+                       has_error = true;
+                       return nullptr;
+                     }
+                     auto tensor = static_cast<inference::Tensor *>(tensor_ptr.get());
+                     if (tensor == nullptr) {
+                       MS_LOG(ERROR) << "Can not cast input MSTensor to tensor";
+                       has_error = true;
+                       return nullptr;
+                     }
+                     return tensor->tensor();
+                   });
+    if (has_error) {
+      MS_LOG(ERROR) << "Init Tensor failed, returning empty result";
+      std::vector<std::shared_ptr<inference::MSTensor>> multiTensor;
+      return multiTensor;
+    }
+    VectorRef outputs;
+    session_impl_->RunGraph(graph_id, inTensors, &outputs);
+
+    return TransformVectorRefToMultiTensor(outputs);
+  } catch (std::exception &e) {
+    MS_LOG(ERROR) << "Inference Rungraph failed";
+    return MultiTensor();
   }
-  VectorRef outputs;
-  session_impl_->RunGraph(graph_id, inTensors, &outputs);
-
-  return TransformVectorRefToMultiTensor(outputs);
 }
-
+namespace {
+string AjustTargetName(const std::string &device) {
+  if (device == kAscendDevice) {
+    return std::string(kAscendDevice) + "Inference";
+  } else {
+    MS_LOG(ERROR) << "Only support device Ascend right now";
+    return "";
+  }
+}
+}  // namespace
 int Session::Init(const std::string &device, uint32_t device_id) {
   RegAllOp();
   auto ms_context = MsContext::GetInstance();
   ms_context->set_execution_mode(kGraphMode);
-  ms_context->set_device_target(kAscendDevice);
-  session_impl_ = session::SessionFactory::Get().Create(device);
+  ms_context->set_device_id(device_id);
+  auto ajust_device = AjustTargetName(device);
+  if (ajust_device == "") {
+    return -1;
+  }
+  ms_context->set_device_target(device);
+  session_impl_ = session::SessionFactory::Get().Create(ajust_device);
   if (session_impl_ == nullptr) {
     MS_LOG(ERROR) << "Session create failed!, please make sure target device:" << device << " is available.";
     return -1;
diff --git a/mindspore/ccsrc/utils/log_adapter.cc b/mindspore/ccsrc/utils/log_adapter.cc
index d16fbead9bc..3588754dae1 100644
--- a/mindspore/ccsrc/utils/log_adapter.cc
+++ b/mindspore/ccsrc/utils/log_adapter.cc
@@ -463,7 +463,7 @@ void InitSubModulesLogLevel() {
 
   // set submodule's log level
   auto submodule = GetEnv("MS_SUBMODULE_LOG_v");
-  MS_LOG(INFO) << "MS_SUBMODULE_LOG_v=`" << submodule << "`";
+  MS_LOG(DEBUG) << "MS_SUBMODULE_LOG_v=`" << submodule << "`";
   LogConfigParser parser(submodule);
   auto configs = parser.Parse();
   for (const auto &cfg : configs) {
@@ -489,22 +489,14 @@ void InitSubModulesLogLevel() {
 }  // namespace mindspore
 
 extern "C" {
-// shared lib init hook
 #if defined(_WIN32) || defined(_WIN64)
-__attribute__((constructor)) void mindspore_log_init(void) {
+__attribute__((constructor)) void common_log_init(void) {
 #else
-void mindspore_log_init(void) {
+void common_log_init(void) {
 #endif
 #ifdef USE_GLOG
   // do not use glog predefined log prefix
   FLAGS_log_prefix = false;
-  static bool is_glog_initialzed = false;
-  if (!is_glog_initialzed) {
-#if !defined(_WIN32) && !defined(_WIN64)
-    google::InitGoogleLogging("mindspore");
-#endif
-    is_glog_initialzed = true;
-  }
   // set default log level to WARNING
   if (mindspore::GetEnv("GLOG_v").empty()) {
     FLAGS_v = mindspore::WARNING;
@@ -525,4 +517,22 @@ void mindspore_log_init(void) {
 #endif
   mindspore::InitSubModulesLogLevel();
 }
+
+// shared lib init hook
+#if defined(_WIN32) || defined(_WIN64)
+__attribute__((constructor)) void mindspore_log_init(void) {
+#else
+void mindspore_log_init(void) {
+#endif
+#ifdef USE_GLOG
+  static bool is_glog_initialzed = false;
+  if (!is_glog_initialzed) {
+#if !defined(_WIN32) && !defined(_WIN64)
+    google::InitGoogleLogging("mindspore");
+#endif
+    is_glog_initialzed = true;
+  }
+#endif
+  common_log_init();
+}
 }
diff --git a/serving/core/server.cc b/serving/core/server.cc
index add9d16bee5..4a3a3b59eb5 100644
--- a/serving/core/server.cc
+++ b/serving/core/server.cc
@@ -22,6 +22,7 @@
 #include <vector>
 #include <utility>
 #include <memory>
+#include <future>
 
 #include "mindspore/ccsrc/utils/log_adapter.h"
 #include "serving/ms_service.grpc.pb.h"
@@ -40,7 +41,7 @@ namespace serving {
 using MSTensorPtr = std::shared_ptr<inference::MSTensor>;
 
 Status Session::CreatDeviceSession(const std::string &device, uint32_t device_id) {
-  session_ = inference::MSSession::CreateSession(device + "Inference", device_id);
+  session_ = inference::MSSession::CreateSession(device, device_id);
   if (session_ == nullptr) {
     MS_LOG(ERROR) << "Creat Session Failed";
     return FAILED;
@@ -67,6 +68,7 @@ Status Session::Predict(const std::vector<MSTensorPtr> &inputs, inference::Multi
   MS_LOG(INFO) << "run Predict";
 
   *outputs = session_->RunGraph(graph_id_, inputs);
+  MS_LOG(INFO) << "run Predict finished";
   return SUCCESS;
 }
 
@@ -80,12 +82,16 @@ Status Session::Warmup(const MindSporeModelPtr model) {
   std::string file_name = model->GetModelPath() + '/' + model->GetModelName();
   char *graphBuf = ReadFile(file_name.c_str(), &size);
   if (graphBuf == nullptr) {
-    MS_LOG(ERROR) << "Load graph model failed, file name is " << file_name.c_str();
+    MS_LOG(ERROR) << "Read model file failed, file name is " << file_name.c_str();
     return FAILED;
   }
   last_graph_ = inference::LoadModel(graphBuf, size, device_type_);
+  if (last_graph_ == nullptr) {
+    MS_LOG(ERROR) << "Load graph model failed, file name is " << file_name.c_str();
+    return FAILED;
+  }
   graph_id_ = session_->CompileGraph(last_graph_);
-  MS_LOG(INFO) << "Session Warmup";
+  MS_LOG(INFO) << "Session Warmup finished";
   return SUCCESS;
 }
 
@@ -95,6 +101,9 @@ Status Session::Clear() {
 }
 
 namespace {
+static const uint32_t uint32max = 0x7FFFFFFF;
+std::promise<void> exit_requested;
+
 const std::map<ms_serving::DataType, TypeId> type2id_map{
   {ms_serving::MS_UNKNOWN, TypeId::kNumberTypeBegin},   {ms_serving::MS_BOOL, TypeId::kNumberTypeBool},
   {ms_serving::MS_INT8, TypeId::kNumberTypeInt8},       {ms_serving::MS_UINT8, TypeId::kNumberTypeUInt8},
@@ -141,7 +150,7 @@ MSTensorPtr ServingTensor2MSTensor(const ms_serving::Tensor &tensor) {
   }
   TypeId type = iter->second;
   auto ms_tensor = std::shared_ptr<inference::MSTensor>(inference::MSTensor::CreateTensor(type, shape));
-  memcpy_s(ms_tensor->MutableData(), tensor.data().size(), tensor.data().data(), tensor.data().size());
+  memcpy_s(ms_tensor->MutableData(), ms_tensor->Size(), tensor.data().data(), tensor.data().size());
   return ms_tensor;
 }
 
@@ -166,10 +175,7 @@ void ClearEnv() {
   Session::Instance().Clear();
   inference::ExitInference();
 }
-void HandleSignal(int sig) {
-  ClearEnv();
-  exit(0);
-}
+void HandleSignal(int sig) { exit_requested.set_value(); }
 
 #ifdef ENABLE_D
 static rtContext_t g_ctx = nullptr;
@@ -247,6 +253,7 @@ Status Server::BuildAndStart() {
   rtError_t rt_ret = rtCtxGetCurrent(&ctx);
   if (rt_ret != RT_ERROR_NONE || ctx == nullptr) {
     MS_LOG(ERROR) << "the ascend device context is null";
+    ClearEnv();
     return FAILED;
   }
   g_ctx = ctx;
@@ -258,6 +265,7 @@ Status Server::BuildAndStart() {
   auto option = grpc::MakeChannelArgumentOption(GRPC_ARG_ALLOW_REUSEPORT, 0);
   grpc::ServerBuilder builder;
   builder.SetOption(std::move(option));
+  builder.SetMaxMessageSize(uint32max);
   // Listen on the given address without any authentication mechanism.
   builder.AddListeningPort(server_address, grpc::InsecureServerCredentials());
   // Register "service" as the instance through which we'll communicate with
@@ -265,13 +273,15 @@ Status Server::BuildAndStart() {
   builder.RegisterService(&service);
   // Finally assemble the server.
   std::unique_ptr<grpc::Server> server(builder.BuildAndStart());
+  auto grpc_server_run = [&server]() { server->Wait(); };
+  std::thread serving_thread(grpc_server_run);
   MS_LOG(INFO) << "Server listening on " << server_address << std::endl;
-
-  // Wait for the server to shutdown. Note that some other thread must be
-  // responsible for shutting down the server for this call to ever return.
-  server->Wait();
+  auto exit_future = exit_requested.get_future();
+  exit_future.wait();
+  ClearEnv();
+  server->Shutdown();
+  serving_thread.join();
   return SUCCESS;
 }
-
 }  // namespace serving
 }  // namespace mindspore
diff --git a/serving/core/util/file_system_operation.cc b/serving/core/util/file_system_operation.cc
index a5143995dec..1af512a54c0 100644
--- a/serving/core/util/file_system_operation.cc
+++ b/serving/core/util/file_system_operation.cc
@@ -29,7 +29,6 @@
 
 namespace mindspore {
 namespace serving {
-
 char *ReadFile(const char *file, size_t *size) {
   if (file == nullptr) {
     MS_LOG(ERROR) << "file is nullptr";
@@ -70,8 +69,8 @@ bool DirOrFileExist(const std::string &file_path) {
 }
 
 std::vector<std::string> GetAllSubDirs(const std::string &dir_path) {
-  DIR *dir;
-  struct dirent *ptr;
+  DIR *dir = nullptr;
+  struct dirent *ptr = nullptr;
   std::vector<std::string> SubDirs;
 
   if ((dir = opendir(dir_path.c_str())) == NULL) {
diff --git a/serving/core/util/option_parser.cc b/serving/core/util/option_parser.cc
index 9cbd7eaee8f..c7f00e37338 100644
--- a/serving/core/util/option_parser.cc
+++ b/serving/core/util/option_parser.cc
@@ -36,17 +36,16 @@ bool RemovePrefix(std::string *str, const std::string &prefix) {
 
 bool Option::ParseInt32(std::string *arg) {
   if (RemovePrefix(arg, "--") && RemovePrefix(arg, name_) && RemovePrefix(arg, "=")) {
-    char extra;
     int32_t parsed_value;
-    if (sscanf(arg->data(), "%d%c", &parsed_value, &extra) != 1) {
-      std::cout << "Parse " << name_ << "Error for option " << *arg << std::endl;
+    try {
+      parsed_value = std::stoi(arg->data());
+    } catch (std::invalid_argument) {
+      std::cout << "Parse " << name_ << " Error for option " << *arg << std::endl;
       return false;
-    } else {
-      *int32_default_ = parsed_value;
     }
+    *int32_default_ = parsed_value;
     return true;
   }
-
   return false;
 }
 
@@ -76,17 +75,16 @@ bool Option::ParseString(std::string *arg) {
 
 bool Option::ParseFloat(std::string *arg) {
   if (RemovePrefix(arg, "--") && RemovePrefix(arg, name_) && RemovePrefix(arg, "=")) {
-    char extra;
     float parsed_value;
-    if (sscanf(arg->data(), "%f%c", &parsed_value, &extra) != 1) {
-      std::cout << "Parse " << name_ << "Error for option " << *arg << std::endl;
+    try {
+      parsed_value = std::stof(arg->data());
+    } catch (std::invalid_argument) {
+      std::cout << "Parse " << name_ << " Error for option " << *arg << std::endl;
       return false;
-    } else {
-      *float_default_ = parsed_value;
     }
+    *float_default_ = parsed_value;
     return true;
   }
-
   return false;
 }
 
@@ -159,10 +157,11 @@ Options::Options() : args_(nullptr) { CreateOptions(); }
 void Options::CreateOptions() {
   args_ = std::make_shared<Arguments>();
   std::vector<Option> options = {
-    Option("port", &args_->grpc_port, "Port to listen on for gRPC API, default is 5500"),
-    Option("model_name", &args_->model_name, "model name "),
-    Option("model_path", &args_->model_path, "the path of the model files"),
-    Option("device_id", &args_->device_id, "the device id, default is 0"),
+    Option("port", &args_->grpc_port,
+           "[Optional] Port to listen on for gRPC API, default is 5500, range from 1 to 65535"),
+    Option("model_name", &args_->model_name, "[Required] model name "),
+    Option("model_path", &args_->model_path, "[Required] the path of the model files"),
+    Option("device_id", &args_->device_id, "[Optional] the device id, default is 0, range from 0 to 7"),
   };
   options_ = options;
 }
@@ -176,6 +175,14 @@ bool Options::CheckOptions() {
     std::cout << "device_type only support Ascend right now" << std::endl;
     return false;
   }
+  if (args_->device_id > 7) {
+    std::cout << "the device_id should be in [0~7]" << std::endl;
+    return false;
+  }
+  if (args_->grpc_port < 1 || args_->grpc_port > 65535) {
+    std::cout << "the port should be in [1~65535]" << std::endl;
+    return false;
+  }
   return true;
 }
 
@@ -238,6 +245,5 @@ void Options::Usage() {
               << option.usage_ << std::endl;
   }
 }
-
 }  // namespace serving
 }  // namespace mindspore
diff --git a/serving/core/util/option_parser.h b/serving/core/util/option_parser.h
index b2185e66c8e..183a72554fa 100644
--- a/serving/core/util/option_parser.h
+++ b/serving/core/util/option_parser.h
@@ -22,7 +22,6 @@
 
 namespace mindspore {
 namespace serving {
-
 struct Arguments {
   int32_t grpc_port = 5500;
   std::string grpc_socket_path;
@@ -40,6 +39,7 @@ class Option {
   Option(const std::string &name, bool *default_point, const std::string &usage);
   Option(const std::string &name, std::string *default_point, const std::string &usage);
   Option(const std::string &name, float *default_point, const std::string &usage);
+  ~Option() = default;
 
  private:
   friend class Options;
@@ -77,7 +77,6 @@ class Options {
   std::vector<Option> options_;
   std::shared_ptr<Arguments> args_;
 };
-
 }  // namespace serving
 }  // namespace mindspore
 
diff --git a/serving/core/version_control/model.cc b/serving/core/version_control/model.cc
index 76db60fc554..8e3942b9266 100644
--- a/serving/core/version_control/model.cc
+++ b/serving/core/version_control/model.cc
@@ -19,7 +19,6 @@
 
 namespace mindspore {
 namespace serving {
-
 MindSporeModel::MindSporeModel(const std::string &model_name, const std::string &model_path,
                                const std::string &model_version, const time_t &last_update_time)
     : model_name_(model_name),
diff --git a/serving/core/version_control/version_controller.cc b/serving/core/version_control/version_controller.cc
index a297e8d8253..71aba923d54 100644
--- a/serving/core/version_control/version_controller.cc
+++ b/serving/core/version_control/version_controller.cc
@@ -25,7 +25,6 @@
 
 namespace mindspore {
 namespace serving {
-
 volatile bool stop_poll = false;
 
 std::string GetVersionFromPath(const std::string &path) {
@@ -102,10 +101,10 @@ Status VersionController::CreateInitModels() {
   }
   std::vector<std::string> SubDirs = GetAllSubDirs(models_path_);
   if (version_control_strategy_ == kLastest) {
-    auto path = SubDirs.empty() ? models_path_ : SubDirs.back();
-    std::string model_version = GetVersionFromPath(path);
-    time_t last_update_time = GetModifyTime(path);
-    MindSporeModelPtr model_ptr = std::make_shared<MindSporeModel>(model_name_, path, model_version, last_update_time);
+    std::string model_version = GetVersionFromPath(models_path_);
+    time_t last_update_time = GetModifyTime(models_path_);
+    MindSporeModelPtr model_ptr =
+      std::make_shared<MindSporeModel>(model_name_, models_path_, model_version, last_update_time);
     valid_models_.emplace_back(model_ptr);
   } else {
     for (auto &dir : SubDirs) {
@@ -119,8 +118,8 @@ Status VersionController::CreateInitModels() {
     MS_LOG(ERROR) << "There is no valid model for serving";
     return FAILED;
   }
-  Session::Instance().Warmup(valid_models_.back());
-  return SUCCESS;
+  auto ret = Session::Instance().Warmup(valid_models_.back());
+  return ret;
 }
 
 void VersionController::StartPollModelPeriodic() {
@@ -129,6 +128,5 @@ void VersionController::StartPollModelPeriodic() {
 }
 
 void VersionController::StopPollModelPeriodic() {}
-
 }  // namespace serving
 }  // namespace mindspore
diff --git a/serving/core/version_control/version_controller.h b/serving/core/version_control/version_controller.h
index 2908f72c682..8053b777981 100644
--- a/serving/core/version_control/version_controller.h
+++ b/serving/core/version_control/version_controller.h
@@ -64,7 +64,6 @@ class PeriodicFunction {
   VersionController::VersionControllerStrategy version_control_strategy_;
   std::vector<MindSporeModelPtr> valid_models_;
 };
-
 }  // namespace serving
 }  // namespace mindspore
 
diff --git a/serving/cpp_example/ms_client.cc b/serving/cpp_example/ms_client.cc
index 846dd618eba..3a9cac77e4c 100644
--- a/serving/cpp_example/ms_client.cc
+++ b/serving/cpp_example/ms_client.cc
@@ -214,6 +214,7 @@ PredictRequest ReadBertInput() {
 class MSClient {
  public:
   explicit MSClient(std::shared_ptr<Channel> channel) : stub_(MSService::NewStub(channel)) {}
+  ~MSClient() = default;
 
   std::string Predict(const std::string &type) {
     // Data we are sending to the server.
@@ -310,7 +311,6 @@ int main(int argc, char **argv) {
         type = "add";
       }
     }
-
   } else {
     target_str = "localhost:5500";
     type = "add";