diff --git a/core/general-client/include/general_model.h b/core/general-client/include/general_model.h
index 2da1e4f77e3c7c3f932e97ac75a374e8dd5852e2..704319644cb68c31b980b14ea8e5b193f3dd22e9 100644
--- a/core/general-client/include/general_model.h
+++ b/core/general-client/include/general_model.h
@@ -52,7 +52,24 @@ class ModelRes {
       const std::string& name) {
     return _float_map[name];
   }
+  void set_engine_name(const std::string& engine_name) {
+    _engine_name = engine_name;
+  }
+  const std::string& engine_name() {
+    return engine_name;
+  }
+  ModelRes& operator = (ModelRes&& res) {
+    std::cout << "move ++++++++>";
+    if (this != &res) {
+      _int64_map = res._int64_map;
+      _float_map = res._float_map;
+      res._int64_map = nullptr;
+      res._float_map = nullptr;
+    }
+    return *this;
+  }
  public:
+  std::string _engine_name;
   std::map<std::string, std::vector<std::vector<int64_t>>> _int64_map;
   std::map<std::string, std::vector<std::vector<float>>> _float_map;
 };
@@ -63,7 +80,10 @@ class PredictorRes {
   ~PredictorRes() {}
 
  public:
-  void clear() { _models.clear();}
+  void clear() {
+    _models.clear();
+    _engine_names.clear();    
+  }
   const std::vector<std::vector<int64_t>>& get_int64_by_name(
       const int model_idx, const std::string& name) {
     return _models[model_idx].get_int64_by_name(name);
@@ -72,16 +92,23 @@ class PredictorRes {
       const int model_idx, const std::string& name) {
     return _models[model_idx].get_float_by_name(name);
   }
+  void add_model_res(ModelRes&& res) {
+    _engine_names.push_back(res.engine_name());
+    _models.emplace_back(res);
+  }
   void set_variant_tag(const std::string& variant_tag) {
     _variant_tag = variant_tag;
   }
   const std::string& variant_tag() { return _variant_tag; }
   int model_num() {return _models.size();}
-
-  std::vector<ModelRes> _models;
+  const std::vector<std::string>& get_engine_names() {
+    return _engine_names;
+  }
 
  private:
+  std::vector<ModelRes> _models;
   std::string _variant_tag;
+  std::vector<std::string> _engine_names;
 };
 
 class PredictorClient {
diff --git a/core/general-client/src/general_model.cpp b/core/general-client/src/general_model.cpp
index 1f16ce5a42710aa531a2dbfd2ae4d518a80fd6ad..461037ba38eb367fd069047b1e7a43717e307acf 100644
--- a/core/general-client/src/general_model.cpp
+++ b/core/general-client/src/general_model.cpp
@@ -112,6 +112,7 @@ void PredictorClient::set_predictor_conf(const std::string &conf_path,
 int PredictorClient::destroy_predictor() {
   _api.thrd_finalize();
   _api.destroy();
+  return 0;
 }
 
 int PredictorClient::create_predictor_by_desc(const std::string &sdk_desc) {
@@ -120,6 +121,7 @@ int PredictorClient::create_predictor_by_desc(const std::string &sdk_desc) {
     return -1;
   }
   _api.thrd_initialize();
+  return 0;
 }
 
 int PredictorClient::create_predictor() {
@@ -130,6 +132,7 @@ int PredictorClient::create_predictor() {
     return -1;
   }
   _api.thrd_initialize();
+  return 0;
 }
 
 int PredictorClient::predict(const std::vector<std::vector<float>> &float_feed,
@@ -166,11 +169,11 @@ int PredictorClient::predict(const std::vector<std::vector<float>> &float_feed,
   for (auto &name : float_feed_name) {
     int idx = _feed_name_to_idx[name];
     Tensor *tensor = tensor_vec[idx];
-    for (int j = 0; j < _shape[idx].size(); ++j) {
+    for (uint32_t j = 0; j < _shape[idx].size(); ++j) {
       tensor->add_shape(_shape[idx][j]);
     }
     tensor->set_elem_type(1);
-    for (int j = 0; j < float_feed[vec_idx].size(); ++j) {
+    for (uint32_t j = 0; j < float_feed[vec_idx].size(); ++j) {
       tensor->add_float_data(float_feed[vec_idx][j]);
     }
     vec_idx++;
@@ -182,11 +185,11 @@ int PredictorClient::predict(const std::vector<std::vector<float>> &float_feed,
   for (auto &name : int_feed_name) {
     int idx = _feed_name_to_idx[name];
     Tensor *tensor = tensor_vec[idx];
-    for (int j = 0; j < _shape[idx].size(); ++j) {
+    for (uint32_t j = 0; j < _shape[idx].size(); ++j) {
       tensor->add_shape(_shape[idx][j]);
     }
     tensor->set_elem_type(0);
-    for (int j = 0; j < int_feed[vec_idx].size(); ++j) {
+    for (uint32_t j = 0; j < int_feed[vec_idx].size(); ++j) {
       tensor->add_int64_data(int_feed[vec_idx][j]);
     }
     vec_idx++;
@@ -321,11 +324,11 @@ int PredictorClient::batch_predict(
     for (auto &name : float_feed_name) {
       int idx = _feed_name_to_idx[name];
       Tensor *tensor = tensor_vec[idx];
-      for (int j = 0; j < _shape[idx].size(); ++j) {
+      for (uint32_t j = 0; j < _shape[idx].size(); ++j) {
         tensor->add_shape(_shape[idx][j]);
       }
       tensor->set_elem_type(1);
-      for (int j = 0; j < float_feed[vec_idx].size(); ++j) {
+      for (uint32_t j = 0; j < float_feed[vec_idx].size(); ++j) {
         tensor->add_float_data(float_feed[vec_idx][j]);
       }
       vec_idx++;
@@ -338,13 +341,13 @@ int PredictorClient::batch_predict(
     for (auto &name : int_feed_name) {
       int idx = _feed_name_to_idx[name];
       Tensor *tensor = tensor_vec[idx];
-      for (int j = 0; j < _shape[idx].size(); ++j) {
+      for (uint32_t j = 0; j < _shape[idx].size(); ++j) {
         tensor->add_shape(_shape[idx][j]);
       }
       tensor->set_elem_type(0);
       VLOG(3) << "feed var name " << name << " index " << vec_idx
               << "first data " << int_feed[vec_idx][0];
-      for (int j = 0; j < int_feed[vec_idx].size(); ++j) {
+      for (uint32_t j = 0; j < int_feed[vec_idx].size(); ++j) {
         tensor->add_int64_data(int_feed[vec_idx][j]);
       }
       vec_idx++;