diff --git a/.gitignore b/.gitignore
index 22ca82834cc..babbc03dca3 100644
--- a/.gitignore
+++ b/.gitignore
@@ -41,6 +41,7 @@ cmake-build-debug
 *.pb.h
 *.pb.cc
 *.pb
+*_grpc.py
 
 # Object files
 *.o
diff --git a/include/inference.h b/include/inference.h
index b8665db1fa4..082cae5d5c8 100644
--- a/include/inference.h
+++ b/include/inference.h
@@ -24,20 +24,20 @@
 
 namespace mindspore {
 namespace inference {
-
+enum Status { SUCCESS = 0, FAILED, INVALID_INPUTS };
 class MS_API InferSession {
  public:
   InferSession() = default;
   virtual ~InferSession() = default;
-  virtual bool InitEnv(const std::string &device_type, uint32_t device_id) = 0;
-  virtual bool FinalizeEnv() = 0;
-  virtual bool LoadModelFromFile(const std::string &file_name, uint32_t &model_id) = 0;
-  virtual bool UnloadModel(uint32_t model_id) = 0;
+  virtual Status InitEnv(const std::string &device_type, uint32_t device_id) = 0;
+  virtual Status FinalizeEnv() = 0;
+  virtual Status LoadModelFromFile(const std::string &file_name, uint32_t &model_id) = 0;
+  virtual Status UnloadModel(uint32_t model_id) = 0;
   // override this method to avoid request/reply data copy
-  virtual bool ExecuteModel(uint32_t model_id, const RequestBase &request, ReplyBase &reply) = 0;
+  virtual Status ExecuteModel(uint32_t model_id, const RequestBase &request, ReplyBase &reply) = 0;
 
-  virtual bool ExecuteModel(uint32_t model_id, const std::vector<InferTensor> &inputs,
-                            std::vector<InferTensor> &outputs) {
+  virtual Status ExecuteModel(uint32_t model_id, const std::vector<InferTensor> &inputs,
+                              std::vector<InferTensor> &outputs) {
     VectorInferTensorWrapRequest request(inputs);
     VectorInferTensorWrapReply reply(outputs);
     return ExecuteModel(model_id, request, reply);
diff --git a/mindspore/ccsrc/backend/session/infer_session.cc b/mindspore/ccsrc/backend/session/infer_session.cc
index 5de815b8f74..cec532fc8cc 100644
--- a/mindspore/ccsrc/backend/session/infer_session.cc
+++ b/mindspore/ccsrc/backend/session/infer_session.cc
@@ -37,8 +37,8 @@ namespace mindspore::inference {
 std::shared_ptr<InferSession> InferSession::CreateSession(const std::string &device, uint32_t device_id) {
   try {
     auto session = std::make_shared<MSInferSession>();
-    bool ret = session->InitEnv(device, device_id);
-    if (!ret) {
+    Status ret = session->InitEnv(device, device_id);
+    if (ret != SUCCESS) {
       return nullptr;
     }
     return session;
@@ -84,21 +84,21 @@ std::shared_ptr<std::vector<char>> MSInferSession::ReadFile(const std::string &f
   return buf;
 }
 
-bool MSInferSession::LoadModelFromFile(const std::string &file_name, uint32_t &model_id) {
+Status MSInferSession::LoadModelFromFile(const std::string &file_name, uint32_t &model_id) {
   auto graphBuf = ReadFile(file_name);
   if (graphBuf == nullptr) {
     MS_LOG(ERROR) << "Read model file failed, file name is " << file_name.c_str();
-    return false;
+    return FAILED;
   }
   auto graph = LoadModel(graphBuf->data(), graphBuf->size(), device_type_);
   if (graph == nullptr) {
     MS_LOG(ERROR) << "Load graph model failed, file name is " << file_name.c_str();
-    return false;
+    return FAILED;
   }
-  bool ret = CompileGraph(graph, model_id);
-  if (!ret) {
+  Status ret = CompileGraph(graph, model_id);
+  if (ret != SUCCESS) {
     MS_LOG(ERROR) << "Compile graph model failed, file name is " << file_name.c_str();
-    return false;
+    return FAILED;
   }
   MS_LOG(INFO) << "Load model from file " << file_name << " success";
 
@@ -107,14 +107,14 @@ bool MSInferSession::LoadModelFromFile(const std::string &file_name, uint32_t &m
   rtError_t rt_ret = rtCtxGetCurrent(&context_);
   if (rt_ret != RT_ERROR_NONE || context_ == nullptr) {
     MS_LOG(ERROR) << "the ascend device context is null";
-    return false;
+    return FAILED;
   }
 #endif
 
-  return true;
+  return SUCCESS;
 }
 
-bool MSInferSession::UnloadModel(uint32_t model_id) { return true; }
+Status MSInferSession::UnloadModel(uint32_t model_id) { return SUCCESS; }
 
 tensor::TensorPtr ServingTensor2MSTensor(const InferTensorBase &out_tensor) {
   std::vector<int> shape;
@@ -170,16 +170,16 @@ void MSTensor2ServingTensor(tensor::TensorPtr ms_tensor, InferTensorBase &out_te
   out_tensor.set_data(ms_tensor->data_c(), ms_tensor->Size());
 }
 
-bool MSInferSession::ExecuteModel(uint32_t model_id, const RequestBase &request, ReplyBase &reply) {
+Status MSInferSession::ExecuteModel(uint32_t model_id, const RequestBase &request, ReplyBase &reply) {
 #ifdef ENABLE_D
   if (context_ == nullptr) {
     MS_LOG(ERROR) << "rtCtx is nullptr";
-    return false;
+    return FAILED;
   }
   rtError_t rt_ret = rtCtxSetCurrent(context_);
   if (rt_ret != RT_ERROR_NONE) {
     MS_LOG(ERROR) << "set Ascend rtCtx failed";
-    return false;
+    return FAILED;
   }
 #endif
 
@@ -187,47 +187,47 @@ bool MSInferSession::ExecuteModel(uint32_t model_id, const RequestBase &request,
   for (size_t i = 0; i < request.size(); i++) {
     if (request[i] == nullptr) {
       MS_LOG(ERROR) << "Execute Model " << model_id << " Failed， input tensor is null, index " << i;
-      return false;
+      return FAILED;
     }
     auto input = ServingTensor2MSTensor(*request[i]);
     if (input == nullptr) {
       MS_LOG(ERROR) << "Tensor convert failed";
-      return false;
+      return FAILED;
     }
     inputs.push_back(input);
   }
   if (!CheckModelInputs(model_id, inputs)) {
     MS_LOG(ERROR) << "Check Model " << model_id << " Inputs Failed";
-    return false;
+    return INVALID_INPUTS;
   }
   vector<tensor::TensorPtr> outputs = RunGraph(model_id, inputs);
   if (outputs.empty()) {
     MS_LOG(ERROR) << "Execute Model " << model_id << " Failed";
-    return false;
+    return FAILED;
   }
   reply.clear();
   for (const auto &tensor : outputs) {
     auto out_tensor = reply.add();
     if (out_tensor == nullptr) {
       MS_LOG(ERROR) << "Execute Model " << model_id << " Failed， add output tensor failed";
-      return false;
+      return FAILED;
     }
     MSTensor2ServingTensor(tensor, *out_tensor);
   }
-  return true;
+  return SUCCESS;
 }
 
-bool MSInferSession::FinalizeEnv() {
+Status MSInferSession::FinalizeEnv() {
   auto ms_context = MsContext::GetInstance();
   if (ms_context == nullptr) {
     MS_LOG(ERROR) << "Get Context failed!";
-    return false;
+    return FAILED;
   }
   if (!ms_context->CloseTsd()) {
     MS_LOG(ERROR) << "Inference CloseTsd failed!";
-    return false;
+    return FAILED;
   }
-  return true;
+  return SUCCESS;
 }
 
 std::shared_ptr<FuncGraph> MSInferSession::LoadModel(const char *model_buf, size_t size, const std::string &device) {
@@ -292,16 +292,16 @@ void MSInferSession::RegAllOp() {
   return;
 }
 
-bool MSInferSession::CompileGraph(std::shared_ptr<FuncGraph> funcGraphPtr, uint32_t &model_id) {
+Status MSInferSession::CompileGraph(std::shared_ptr<FuncGraph> funcGraphPtr, uint32_t &model_id) {
   MS_ASSERT(session_impl_ != nullptr);
   try {
     auto graph_id = session_impl_->CompileGraph(NOT_NULL(funcGraphPtr));
     py::gil_scoped_release gil_release;
     model_id = graph_id;
-    return true;
+    return SUCCESS;
   } catch (std::exception &e) {
     MS_LOG(ERROR) << "Inference CompileGraph failed";
-    return false;
+    return FAILED;
   }
 }
 
@@ -327,31 +327,31 @@ string MSInferSession::AjustTargetName(const std::string &device) {
   }
 }
 
-bool MSInferSession::InitEnv(const std::string &device, uint32_t device_id) {
+Status MSInferSession::InitEnv(const std::string &device, uint32_t device_id) {
   RegAllOp();
   auto ms_context = MsContext::GetInstance();
   ms_context->set_execution_mode(kGraphMode);
   ms_context->set_device_id(device_id);
   auto ajust_device = AjustTargetName(device);
   if (ajust_device == "") {
-    return false;
+    return FAILED;
   }
   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 false;
+    return FAILED;
   }
   session_impl_->Init(device_id);
   if (ms_context == nullptr) {
     MS_LOG(ERROR) << "Get Context failed!";
-    return false;
+    return FAILED;
   }
   if (!ms_context->OpenTsd()) {
     MS_LOG(ERROR) << "Session init OpenTsd failed!";
-    return false;
+    return FAILED;
   }
-  return true;
+  return SUCCESS;
 }
 
 bool MSInferSession::CheckModelInputs(uint32_t graph_id, const std::vector<tensor::TensorPtr> &inputs) const {
diff --git a/mindspore/ccsrc/backend/session/infer_session.h b/mindspore/ccsrc/backend/session/infer_session.h
index edebd8834ff..62ed5f9ff4a 100644
--- a/mindspore/ccsrc/backend/session/infer_session.h
+++ b/mindspore/ccsrc/backend/session/infer_session.h
@@ -38,11 +38,11 @@ class MSInferSession : public InferSession {
   MSInferSession();
   ~MSInferSession();
 
-  bool InitEnv(const std::string &device_type, uint32_t device_id) override;
-  bool FinalizeEnv() override;
-  bool LoadModelFromFile(const std::string &file_name, uint32_t &model_id) override;
-  bool UnloadModel(uint32_t model_id) override;
-  bool ExecuteModel(uint32_t model_id, const RequestBase &inputs, ReplyBase &outputs) override;
+  Status InitEnv(const std::string &device_type, uint32_t device_id) override;
+  Status FinalizeEnv() override;
+  Status LoadModelFromFile(const std::string &file_name, uint32_t &model_id) override;
+  Status UnloadModel(uint32_t model_id) override;
+  Status ExecuteModel(uint32_t model_id, const RequestBase &inputs, ReplyBase &outputs) override;
 
  private:
   std::shared_ptr<session::SessionBasic> session_impl_ = nullptr;
@@ -57,7 +57,7 @@ class MSInferSession : public InferSession {
   std::shared_ptr<std::vector<char>> ReadFile(const std::string &file);
   static void RegAllOp();
   string AjustTargetName(const std::string &device);
-  bool CompileGraph(std::shared_ptr<FuncGraph> funcGraphPtr, uint32_t &model_id);
+  Status CompileGraph(std::shared_ptr<FuncGraph> funcGraphPtr, uint32_t &model_id);
   bool CheckModelInputs(uint32_t graph_id, const std::vector<tensor::TensorPtr> &inputs) const;
   std::vector<tensor::TensorPtr> RunGraph(uint32_t graph_id, const std::vector<tensor::TensorPtr> &inputs);
 };
diff --git a/serving/README.md b/serving/README_CN.md
similarity index 100%
rename from serving/README.md
rename to serving/README_CN.md
diff --git a/serving/acl/acl_session.cc b/serving/acl/acl_session.cc
index dcbb43689dd..d154cc7164d 100644
--- a/serving/acl/acl_session.cc
+++ b/serving/acl/acl_session.cc
@@ -35,53 +35,53 @@ std::shared_ptr<InferSession> InferSession::CreateSession(const std::string &dev
   }
 }
 
-bool AclSession::LoadModelFromFile(const std::string &file_name, uint32_t &model_id) {
-  return model_process_.LoadModelFromFile(file_name, model_id);
+Status AclSession::LoadModelFromFile(const std::string &file_name, uint32_t &model_id) {
+  return model_process_.LoadModelFromFile(file_name, model_id) ? SUCCESS : FAILED;
 }
 
-bool AclSession::UnloadModel(uint32_t model_id) {
+Status AclSession::UnloadModel(uint32_t model_id) {
   model_process_.UnLoad();
-  return true;
+  return SUCCESS;
 }
 
-bool AclSession::ExecuteModel(uint32_t model_id, const RequestBase &request,
-                              ReplyBase &reply) {  // set d context
+Status AclSession::ExecuteModel(uint32_t model_id, const RequestBase &request,
+                                ReplyBase &reply) {  // set d context
   aclError rt_ret = aclrtSetCurrentContext(context_);
   if (rt_ret != ACL_ERROR_NONE) {
     MSI_LOG_ERROR << "set the ascend device context failed";
-    return false;
+    return FAILED;
   }
-  return model_process_.Execute(request, reply);
+  return model_process_.Execute(request, reply) ? SUCCESS : FAILED;
 }
 
-bool AclSession::InitEnv(const std::string &device_type, uint32_t device_id) {
+Status AclSession::InitEnv(const std::string &device_type, uint32_t device_id) {
   device_type_ = device_type;
   device_id_ = device_id;
   auto ret = aclInit(nullptr);
   if (ret != ACL_ERROR_NONE) {
     MSI_LOG_ERROR << "Execute aclInit Failed";
-    return false;
+    return FAILED;
   }
   MSI_LOG_INFO << "acl init success";
 
   ret = aclrtSetDevice(device_id_);
   if (ret != ACL_ERROR_NONE) {
     MSI_LOG_ERROR << "acl open device " << device_id_ << " failed";
-    return false;
+    return FAILED;
   }
   MSI_LOG_INFO << "open device " << device_id_ << " success";
 
   ret = aclrtCreateContext(&context_, device_id_);
   if (ret != ACL_ERROR_NONE) {
     MSI_LOG_ERROR << "acl create context failed";
-    return false;
+    return FAILED;
   }
   MSI_LOG_INFO << "create context success";
 
   ret = aclrtCreateStream(&stream_);
   if (ret != ACL_ERROR_NONE) {
     MSI_LOG_ERROR << "acl create stream failed";
-    return false;
+    return FAILED;
   }
   MSI_LOG_INFO << "create stream success";
 
@@ -89,17 +89,17 @@ bool AclSession::InitEnv(const std::string &device_type, uint32_t device_id) {
   ret = aclrtGetRunMode(&run_mode);
   if (ret != ACL_ERROR_NONE) {
     MSI_LOG_ERROR << "acl get run mode failed";
-    return false;
+    return FAILED;
   }
   bool is_device = (run_mode == ACL_DEVICE);
   model_process_.SetIsDevice(is_device);
   MSI_LOG_INFO << "get run mode success is device input/output " << is_device;
 
   MSI_LOG_INFO << "Init acl success, device id " << device_id_;
-  return true;
+  return SUCCESS;
 }
 
-bool AclSession::FinalizeEnv() {
+Status AclSession::FinalizeEnv() {
   aclError ret;
   if (stream_ != nullptr) {
     ret = aclrtDestroyStream(stream_);
@@ -129,7 +129,7 @@ bool AclSession::FinalizeEnv() {
     MSI_LOG_ERROR << "finalize acl failed";
   }
   MSI_LOG_INFO << "end to finalize acl";
-  return true;
+  return SUCCESS;
 }
 
 AclSession::AclSession() = default;
diff --git a/serving/acl/acl_session.h b/serving/acl/acl_session.h
index 206cf4b7fcf..2b44f9e1d58 100644
--- a/serving/acl/acl_session.h
+++ b/serving/acl/acl_session.h
@@ -32,11 +32,11 @@ class AclSession : public InferSession {
  public:
   AclSession();
 
-  bool InitEnv(const std::string &device_type, uint32_t device_id) override;
-  bool FinalizeEnv() override;
-  bool LoadModelFromFile(const std::string &file_name, uint32_t &model_id) override;
-  bool UnloadModel(uint32_t model_id) override;
-  bool ExecuteModel(uint32_t model_id, const RequestBase &request, ReplyBase &reply) override;
+  Status InitEnv(const std::string &device_type, uint32_t device_id) override;
+  Status FinalizeEnv() override;
+  Status LoadModelFromFile(const std::string &file_name, uint32_t &model_id) override;
+  Status UnloadModel(uint32_t model_id) override;
+  Status ExecuteModel(uint32_t model_id, const RequestBase &request, ReplyBase &reply) override;
 
  private:
   std::string device_type_;
diff --git a/serving/core/server.cc b/serving/core/server.cc
index 8b587896557..180e07bb0cd 100644
--- a/serving/core/server.cc
+++ b/serving/core/server.cc
@@ -31,6 +31,7 @@
 #include "core/version_control/version_controller.h"
 #include "core/util/file_system_operation.h"
 #include "core/serving_tensor.h"
+#include "util/status.h"
 
 using ms_serving::MSService;
 using ms_serving::PredictReply;
@@ -79,9 +80,9 @@ Status Session::Predict(const PredictRequest &request, PredictReply &reply) {
 
   auto ret = session_->ExecuteModel(graph_id_, serving_request, serving_reply);
   MSI_LOG(INFO) << "run Predict finished";
-  if (!ret) {
+  if (Status(ret) != SUCCESS) {
     MSI_LOG(ERROR) << "execute model return failed";
-    return FAILED;
+    return Status(ret);
   }
   return SUCCESS;
 }
@@ -97,9 +98,9 @@ Status Session::Warmup(const MindSporeModelPtr model) {
   MSI_TIME_STAMP_START(LoadModelFromFile)
   auto ret = session_->LoadModelFromFile(file_name, graph_id_);
   MSI_TIME_STAMP_END(LoadModelFromFile)
-  if (!ret) {
+  if (Status(ret) != SUCCESS) {
     MSI_LOG(ERROR) << "Load graph model failed, file name is " << file_name.c_str();
-    return FAILED;
+    return Status(ret);
   }
   model_loaded_ = true;
   MSI_LOG(INFO) << "Session Warmup finished";
@@ -119,12 +120,22 @@ namespace {
 static const uint32_t uint32max = 0x7FFFFFFF;
 std::promise<void> exit_requested;
 
-void ClearEnv() {
-  Session::Instance().Clear();
-  // inference::ExitInference();
-}
+void ClearEnv() { Session::Instance().Clear(); }
 void HandleSignal(int sig) { exit_requested.set_value(); }
 
+grpc::Status CreatGRPCStatus(Status status) {
+  switch (status) {
+    case SUCCESS:
+      return grpc::Status::OK;
+    case FAILED:
+      return grpc::Status::CANCELLED;
+    case INVALID_INPUTS:
+      return grpc::Status(grpc::StatusCode::INVALID_ARGUMENT, "The Predict Inputs do not match the Model Request!");
+    default:
+      return grpc::Status::CANCELLED;
+  }
+}
+
 }  // namespace
 
 // Service Implement
@@ -134,8 +145,8 @@ class MSServiceImpl final : public MSService::Service {
     MSI_TIME_STAMP_START(Predict)
     auto res = Session::Instance().Predict(*request, *reply);
     MSI_TIME_STAMP_END(Predict)
-    if (res != SUCCESS) {
-      return grpc::Status::CANCELLED;
+    if (res != inference::SUCCESS) {
+      return CreatGRPCStatus(res);
     }
     MSI_LOG(INFO) << "Finish call service Eval";
     return grpc::Status::OK;
diff --git a/serving/core/util/status.h b/serving/core/util/status.h
index 5f97f9b0b79..d416b8c8859 100644
--- a/serving/core/util/status.h
+++ b/serving/core/util/status.h
@@ -18,7 +18,7 @@
 namespace mindspore {
 namespace serving {
 using Status = uint32_t;
-enum ServingStatus { SUCCESS = 0, FAILED };
+enum ServingStatus { SUCCESS = 0, FAILED, INVALID_INPUTS };
 }  // namespace serving
 }  // namespace mindspore
 
diff --git a/serving/example/cpp_client/ms_client.cc b/serving/example/cpp_client/ms_client.cc
index a6899719436..720f1cf7044 100644
--- a/serving/example/cpp_client/ms_client.cc
+++ b/serving/example/cpp_client/ms_client.cc
@@ -31,51 +31,51 @@ using ms_serving::TensorShape;
 
 class MSClient {
  public:
-    explicit MSClient(std::shared_ptr<Channel> channel) : stub_(MSService::NewStub(channel)) {}
+  explicit MSClient(std::shared_ptr<Channel> channel) : stub_(MSService::NewStub(channel)) {}
 
-    ~MSClient() = default;
+  ~MSClient() = default;
 
-    std::string Predict() {
-      // Data we are sending to the server.
-      PredictRequest request;
+  std::string Predict() {
+    // Data we are sending to the server.
+    PredictRequest request;
 
-      Tensor data;
-      TensorShape shape;
-      shape.add_dims(4);
-      *data.mutable_tensor_shape() = shape;
-      data.set_tensor_type(ms_serving::MS_FLOAT32);
-      std::vector<float> input_data{1, 2, 3, 4};
-      data.set_data(input_data.data(), input_data.size() * sizeof(float));
-      *request.add_data() = data;
-      *request.add_data() = data;
-      std::cout << "intput tensor size is " << request.data_size() << std::endl;
-      // Container for the data we expect from the server.
-      PredictReply reply;
+    Tensor data;
+    TensorShape shape;
+    shape.add_dims(4);
+    *data.mutable_tensor_shape() = shape;
+    data.set_tensor_type(ms_serving::MS_FLOAT32);
+    std::vector<float> input_data{1, 2, 3, 4};
+    data.set_data(input_data.data(), input_data.size() * sizeof(float));
+    *request.add_data() = data;
+    *request.add_data() = data;
+    std::cout << "intput tensor size is " << request.data_size() << std::endl;
+    // Container for the data we expect from the server.
+    PredictReply reply;
 
-      // Context for the client. It could be used to convey extra information to
-      // the server and/or tweak certain RPC behaviors.
-      ClientContext context;
+    // Context for the client. It could be used to convey extra information to
+    // the server and/or tweak certain RPC behaviors.
+    ClientContext context;
 
-      // The actual RPC.
-      Status status = stub_->Predict(&context, request, &reply);
-      std::cout << "Compute [1, 2, 3, 4] + [1, 2, 3, 4]" << std::endl;
+    // The actual RPC.
+    Status status = stub_->Predict(&context, request, &reply);
+    std::cout << "Compute [1, 2, 3, 4] + [1, 2, 3, 4]" << std::endl;
+
+    // Act upon its status.
+    if (status.ok()) {
       std::cout << "Add result is";
       for (size_t i = 0; i < reply.result(0).data().size() / sizeof(float); i++) {
         std::cout << " " << (reinterpret_cast<const float *>(reply.mutable_result(0)->mutable_data()->data()))[i];
       }
       std::cout << std::endl;
-
-      // Act upon its status.
-      if (status.ok()) {
-        return "RPC OK";
-      } else {
-        std::cout << status.error_code() << ": " << status.error_message() << std::endl;
-        return "RPC failed";
-      }
+      return "RPC OK";
+    } else {
+      std::cout << status.error_code() << ": " << status.error_message() << std::endl;
+      return "RPC failed";
     }
+  }
 
  private:
-    std::unique_ptr<MSService::Stub> stub_;
+  std::unique_ptr<MSService::Stub> stub_;
 };
 
 int main(int argc, char **argv) {
diff --git a/serving/example/python_client/ms_client.py b/serving/example/python_client/ms_client.py
index 82c8944fc7f..8ea64916d98 100644
--- a/serving/example/python_client/ms_client.py
+++ b/serving/example/python_client/ms_client.py
@@ -12,6 +12,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 # ============================================================================
+import sys
 import grpc
 import numpy as np
 import ms_service_pb2
@@ -19,7 +20,19 @@ import ms_service_pb2_grpc
 
 
 def run():
-    channel = grpc.insecure_channel('localhost:5500')
+    if len(sys.argv) > 2:
+        sys.exit("input error")
+    channel_str = ""
+    if len(sys.argv) == 2:
+        split_args = sys.argv[1].split('=')
+        if len(split_args) > 1:
+            channel_str = split_args[1]
+        else:
+            channel_str = 'localhost:5500'
+    else:
+        channel_str = 'localhost:5500'
+
+    channel = grpc.insecure_channel(channel_str)
     stub = ms_service_pb2_grpc.MSServiceStub(channel)
     request = ms_service_pb2.PredictRequest()
 
@@ -33,11 +46,17 @@ def run():
     y.tensor_type = ms_service_pb2.MS_FLOAT32
     y.data = (np.ones([4]).astype(np.float32)).tobytes()
 
-    result = stub.Predict(request)
-    print(result)
-    result_np = np.frombuffer(result.result[0].data, dtype=np.float32).reshape(result.result[0].tensor_shape.dims)
-    print("ms client received: ")
-    print(result_np)
+    try:
+        result = stub.Predict(request)
+        print(result)
+        result_np = np.frombuffer(result.result[0].data, dtype=np.float32).reshape(result.result[0].tensor_shape.dims)
+        print("ms client received: ")
+        print(result_np)
+    except grpc.RpcError as e:
+        print(e.details())
+        status_code = e.code()
+        print(status_code.name)
+        print(status_code.value)
 
 if __name__ == '__main__':
     run()