diff --git a/fastdeploy/backends/backend.h b/fastdeploy/backends/backend.h
index 620aea9f4..652d94cb8 100644
--- a/fastdeploy/backends/backend.h
+++ b/fastdeploy/backends/backend.h
@@ -21,6 +21,7 @@
 
 #include "fastdeploy/backends/common/multiclass_nms.h"
 #include "fastdeploy/core/fd_tensor.h"
+#include "fastdeploy/core/fd_type.h"
 
 namespace fastdeploy {
 
@@ -63,6 +64,11 @@ class BaseBackend {
   virtual std::vector<TensorInfo> GetOutputInfos() = 0;
   virtual bool Infer(std::vector<FDTensor>& inputs,
                      std::vector<FDTensor>* outputs) = 0;
+  virtual std::unique_ptr<BaseBackend> Clone(void *stream = nullptr,
+                                             int device_id = -1) {
+    FDERROR << "Clone no support" << std::endl;
+    return nullptr;
+  }
 };
 
 }  // namespace fastdeploy
diff --git a/fastdeploy/backends/openvino/ov_backend.cc b/fastdeploy/backends/openvino/ov_backend.cc
index f205b48e2..5a664fc87 100644
--- a/fastdeploy/backends/openvino/ov_backend.cc
+++ b/fastdeploy/backends/openvino/ov_backend.cc
@@ -74,6 +74,8 @@ ov::element::Type FDDataTypeToOV(const FDDataType& type) {
   return ov::element::f32;
 }
 
+ov::Core OpenVINOBackend::core_;
+
 void OpenVINOBackend::InitTensorInfo(
     const std::vector<ov::Output<ov::Node>>& ov_outputs,
     std::map<std::string, TensorInfo>* tensor_infos) {
@@ -96,10 +98,6 @@ bool OpenVINOBackend::InitFromPaddle(const std::string& model_file,
     return false;
   }
   option_ = option;
-  ov::AnyMap properties;
-  if (option_.cpu_thread_num > 0) {
-    properties["INFERENCE_NUM_THREADS"] = option_.cpu_thread_num;
-  }
 
   std::shared_ptr<ov::Model> model = core_.read_model(model_file, params_file);
 
@@ -149,7 +147,19 @@ bool OpenVINOBackend::InitFromPaddle(const std::string& model_file,
     output_infos_.push_back(iter->second);
   }
 
+  ov::AnyMap properties;
+  if (option_.cpu_thread_num > 0) {
+    properties["INFERENCE_NUM_THREADS"] = option_.cpu_thread_num;
+  }
+  if (option_.ov_num_streams ==  -1) {
+    properties["NUM_STREAMS"] = ov::streams::AUTO;
+  } else if (option_.ov_num_streams ==  -2) {
+    properties["NUM_STREAMS"] = ov::streams::NUMA;
+  } else if (option_.ov_num_streams > 0) {
+    properties["NUM_STREAMS"] = option_.ov_num_streams;
+  }
   compiled_model_ = core_.compile_model(model, "CPU", properties);
+
   request_ = compiled_model_.create_infer_request();
   initialized_ = true;
   return true;
@@ -185,10 +195,6 @@ bool OpenVINOBackend::InitFromOnnx(const std::string& model_file,
     return false;
   }
   option_ = option;
-  ov::AnyMap properties;
-  if (option_.cpu_thread_num > 0) {
-    properties["INFERENCE_NUM_THREADS"] = option_.cpu_thread_num;
-  }
 
   std::shared_ptr<ov::Model> model = core_.read_model(model_file);
 
@@ -238,8 +244,21 @@ bool OpenVINOBackend::InitFromOnnx(const std::string& model_file,
     output_infos_.push_back(iter->second);
   }
 
+  ov::AnyMap properties;
+  if (option_.cpu_thread_num > 0) {
+    properties["INFERENCE_NUM_THREADS"] = option_.cpu_thread_num;
+  }
+  if (option_.ov_num_streams ==  -1) {
+    properties["NUM_STREAMS"] = ov::streams::AUTO;
+  } else if (option_.ov_num_streams ==  -2) {
+    properties["NUM_STREAMS"] = ov::streams::NUMA;
+  } else if (option_.ov_num_streams > 0) {
+    properties["NUM_STREAMS"] = option_.ov_num_streams;
+  }
   compiled_model_ = core_.compile_model(model, "CPU", properties);
+
   request_ = compiled_model_.create_infer_request();
+  
   initialized_ = true;
   return true;
 }
@@ -281,4 +300,14 @@ bool OpenVINOBackend::Infer(std::vector<FDTensor>& inputs,
   return true;
 }
 
+std::unique_ptr<BaseBackend> OpenVINOBackend::Clone(void *stream, int device_id) {
+  std::unique_ptr<BaseBackend> new_backend = utils::make_unique<OpenVINOBackend>();
+  auto casted_backend = dynamic_cast<OpenVINOBackend*>(new_backend.get());
+  casted_backend->option_ = option_;
+  casted_backend->request_ = compiled_model_.create_infer_request();
+  casted_backend->input_infos_.assign(input_infos_.begin(), input_infos_.end());
+  casted_backend->output_infos_.assign(output_infos_.begin(), output_infos_.end());
+  return new_backend;
+}
+
 }  // namespace fastdeploy
diff --git a/fastdeploy/backends/openvino/ov_backend.h b/fastdeploy/backends/openvino/ov_backend.h
index 5dd362d52..b7d77e58f 100644
--- a/fastdeploy/backends/openvino/ov_backend.h
+++ b/fastdeploy/backends/openvino/ov_backend.h
@@ -20,17 +20,20 @@
 #include <vector>
 
 #include "fastdeploy/backends/backend.h"
+#include "fastdeploy/utils/unique_ptr.h"
 #include "openvino/openvino.hpp"
 
 namespace fastdeploy {
 
 struct OpenVINOBackendOption {
-  int cpu_thread_num = 8;
+  int cpu_thread_num = -1;
+  int ov_num_streams = 1;
   std::map<std::string, std::vector<int64_t>> shape_infos;
 };
 
 class OpenVINOBackend : public BaseBackend {
  public:
+  static ov::Core core_;
   OpenVINOBackend() {}
   virtual ~OpenVINOBackend() = default;
 
@@ -54,10 +57,13 @@ class OpenVINOBackend : public BaseBackend {
   std::vector<TensorInfo> GetInputInfos() override;
   std::vector<TensorInfo> GetOutputInfos() override;
 
+  std::unique_ptr<BaseBackend> Clone(void *stream = nullptr,
+                                     int device_id = -1) override;
+
  private:
   void InitTensorInfo(const std::vector<ov::Output<ov::Node>>& ov_outputs,
                       std::map<std::string, TensorInfo>* tensor_infos);
-  ov::Core core_;
+
   ov::CompiledModel compiled_model_;
   ov::InferRequest request_;
   OpenVINOBackendOption option_;
diff --git a/fastdeploy/backends/paddle/paddle_backend.cc b/fastdeploy/backends/paddle/paddle_backend.cc
index 61e5fb414..70d8305c5 100644
--- a/fastdeploy/backends/paddle/paddle_backend.cc
+++ b/fastdeploy/backends/paddle/paddle_backend.cc
@@ -216,6 +216,30 @@ bool PaddleBackend::Infer(std::vector<FDTensor>& inputs,
   return true;
 }
 
+std::unique_ptr<BaseBackend> PaddleBackend::Clone(void *stream, int device_id) {
+  std::unique_ptr<BaseBackend> new_backend = utils::make_unique<PaddleBackend>();
+  auto casted_backend = dynamic_cast<PaddleBackend*>(new_backend.get());
+  if(device_id > 0 && option_.use_gpu == true && device_id != option_.gpu_id) {
+    auto clone_option = option_;
+    clone_option.gpu_id = device_id;
+    clone_option.external_stream_ = stream;
+    casted_backend->InitFromPaddle(clone_option.model_file,
+                                   clone_option.params_file,
+                                   clone_option);
+    FDWARNING << "The target device id:" 
+             << device_id
+             << " is different from current device id:"
+             << option_.gpu_id
+             << ", cannot share memory with current engine."
+             << std::endl;
+    return new_backend;
+  }
+  casted_backend->inputs_desc_.assign(inputs_desc_.begin(), inputs_desc_.end());
+  casted_backend->outputs_desc_.assign(outputs_desc_.begin(), outputs_desc_.end());
+  casted_backend->predictor_ = std::move(predictor_->Clone(stream));
+  return new_backend;
+}
+
 #ifdef ENABLE_TRT_BACKEND
 void PaddleBackend::SetTRTDynamicShapeToConfig(const PaddleBackendOption& option) {
     std::map<std::string, std::vector<int>> max_shape;
diff --git a/fastdeploy/backends/paddle/paddle_backend.h b/fastdeploy/backends/paddle/paddle_backend.h
index 43f8e67e6..0c674494e 100755
--- a/fastdeploy/backends/paddle/paddle_backend.h
+++ b/fastdeploy/backends/paddle/paddle_backend.h
@@ -24,6 +24,7 @@
 #include "paddle2onnx/converter.h"
 #endif
 #include "paddle_inference_api.h"  // NOLINT
+#include "fastdeploy/utils/unique_ptr.h"
 
 #ifdef ENABLE_TRT_BACKEND
 #include "fastdeploy/backends/tensorrt/trt_backend.h"
@@ -43,6 +44,9 @@ struct IpuOption {
 };
 
 struct PaddleBackendOption {
+  std::string model_file = "";   // Path of model file
+  std::string params_file = "";  // Path of parameters file, can be empty
+
 #ifdef WITH_GPU
   bool use_gpu = true;
 #else
@@ -110,6 +114,9 @@ class PaddleBackend : public BaseBackend {
 
   int NumOutputs() const override { return outputs_desc_.size(); }
 
+  std::unique_ptr<BaseBackend> Clone(void *stream = nullptr,
+                                     int device_id = -1) override;
+
   TensorInfo GetInputInfo(int index) override;
   TensorInfo GetOutputInfo(int index) override;
   std::vector<TensorInfo> GetInputInfos() override;
diff --git a/fastdeploy/backends/tensorrt/trt_backend.cc b/fastdeploy/backends/tensorrt/trt_backend.cc
index ba6c32951..2306cb239 100755
--- a/fastdeploy/backends/tensorrt/trt_backend.cc
+++ b/fastdeploy/backends/tensorrt/trt_backend.cc
@@ -285,6 +285,7 @@ bool TrtBackend::Infer(std::vector<FDTensor>& inputs,
     BuildTrtEngine();
   }
 
+  cudaSetDevice(option_.gpu_id);
   SetInputs(inputs);
   AllocateOutputsBuffer(outputs);
 
@@ -356,13 +357,17 @@ void TrtBackend::GetInputOutputInfo() {
       outputs_device_buffer_[name] = FDDeviceBuffer(dtype);
       casted_output_tensors_[name] = FDTensor();
     }
+    io_name_index_[name] = i;
   }
   bindings_.resize(num_binds);
 }
 
 void TrtBackend::SetInputs(const std::vector<FDTensor>& inputs) {
   for (const auto& item : inputs) {
-    auto idx = engine_->getBindingIndex(item.name.c_str());
+    // auto idx = engine_->getBindingIndex(item.name.c_str());
+    auto iter = io_name_index_.find(item.name);
+    FDASSERT(iter != io_name_index_.end(), "TRTBackend SetInputs not find name:%s", item.name.c_str());
+    auto idx = iter->second; 
     std::vector<int> shape(item.shape.begin(), item.shape.end());
     auto dims = ToDims(shape);
     context_->setBindingDimensions(idx, dims);
@@ -410,7 +415,10 @@ void TrtBackend::AllocateOutputsBuffer(std::vector<FDTensor>* outputs) {
     outputs->resize(outputs_desc_.size());
   }
   for (size_t i = 0; i < outputs_desc_.size(); ++i) {
-    auto idx = engine_->getBindingIndex(outputs_desc_[i].name.c_str());
+    // auto idx = engine_->getBindingIndex(outputs_desc_[i].name.c_str());
+    auto idx_iter = io_name_index_.find(outputs_desc_[i].name);
+    FDASSERT(idx_iter != io_name_index_.end(), "TRTBackend Outputs not find name:%s", outputs_desc_[i].name.c_str());
+    auto idx = idx_iter->second; 
     auto output_dims = context_->getBindingDimensions(idx);
 
     // find the original index of output
@@ -673,4 +681,47 @@ std::vector<TensorInfo> TrtBackend::GetOutputInfos() {
   return infos;
 }
 
+std::unique_ptr<BaseBackend> TrtBackend::Clone(void *stream, int device_id) {
+  std::unique_ptr<BaseBackend> new_backend = utils::make_unique<TrtBackend>();
+  auto casted_backend = dynamic_cast<TrtBackend*>(new_backend.get());
+  if(device_id > 0 && device_id != option_.gpu_id) {
+    auto clone_option = option_;
+    clone_option.gpu_id = device_id;
+    clone_option.external_stream_ = stream;
+    if (option_.model_format == ModelFormat::ONNX) {
+      FDASSERT(casted_backend->InitFromOnnx(option_.model_file, clone_option),
+              "Clone model from ONNX failed while initialize TrtBackend.");
+    } else {
+      FDASSERT(casted_backend->InitFromPaddle(option_.model_file,
+                                              option_.params_file, clone_option),
+              "Clone model from Paddle failed while initialize TrtBackend.");
+    }
+    FDWARNING << "The target device id:" 
+          << device_id
+          << " is different from current device id:"
+          << option_.gpu_id
+          << ", cannot share memory with current engine."
+          << std::endl;
+    return new_backend;
+  }
+  cudaSetDevice(option_.gpu_id);
+  casted_backend->option_.gpu_id = option_.gpu_id;
+  if (stream) {
+    casted_backend->stream_ = reinterpret_cast<cudaStream_t>(stream);
+  } else {
+    FDASSERT(cudaStreamCreate(&casted_backend->stream_) == 0,
+           "[ERROR] Error occurs while clone calling cudaStreamCreate().");
+  }
+  casted_backend->inputs_desc_.assign(inputs_desc_.begin(), inputs_desc_.end());
+  casted_backend->outputs_desc_.assign(outputs_desc_.begin(), outputs_desc_.end());
+  casted_backend->outputs_order_.insert(outputs_order_.begin(), outputs_order_.end());
+  casted_backend->shape_range_info_.insert(shape_range_info_.begin(), shape_range_info_.end());
+  casted_backend->engine_ = engine_;
+  casted_backend->context_ = std::shared_ptr<nvinfer1::IExecutionContext>(
+      casted_backend->engine_->createExecutionContext());
+  casted_backend->GetInputOutputInfo();
+  FDINFO << "TRTBackend clone finish." << std::endl;
+  return new_backend;
+}
+
 }  // namespace fastdeploy
diff --git a/fastdeploy/backends/tensorrt/trt_backend.h b/fastdeploy/backends/tensorrt/trt_backend.h
index cb107af49..7ef931f90 100755
--- a/fastdeploy/backends/tensorrt/trt_backend.h
+++ b/fastdeploy/backends/tensorrt/trt_backend.h
@@ -25,6 +25,7 @@
 #include "NvOnnxParser.h"
 #include "fastdeploy/backends/backend.h"
 #include "fastdeploy/backends/tensorrt/utils.h"
+#include "fastdeploy/utils/unique_ptr.h"
 
 class Int8EntropyCalibrator2 : public nvinfer1::IInt8EntropyCalibrator2 {
  public:
@@ -45,7 +46,7 @@ class Int8EntropyCalibrator2 : public nvinfer1::IInt8EntropyCalibrator2 {
 
   void writeCalibrationCache(const void* cache,
                              size_t length) noexcept override {
-    std::cout << "NOT IMPLEMENT." << std::endl;
+    fastdeploy::FDERROR << "NOT IMPLEMENT." << std::endl;
   }
 
  private:
@@ -62,6 +63,11 @@ struct TrtValueInfo {
 };
 
 struct TrtBackendOption {
+  std::string model_file = "";   // Path of model file
+  std::string params_file = "";  // Path of parameters file, can be empty
+  // format of input model
+  ModelFormat model_format = ModelFormat::AUTOREC;
+
   int gpu_id = 0;
   bool enable_fp16 = false;
   bool enable_int8 = false;
@@ -99,6 +105,8 @@ class TrtBackend : public BaseBackend {
   TensorInfo GetOutputInfo(int index);
   std::vector<TensorInfo> GetInputInfos() override;
   std::vector<TensorInfo> GetOutputInfos() override;
+  std::unique_ptr<BaseBackend> Clone(void *stream = nullptr,
+                                     int device_id = -1) override;
 
   ~TrtBackend() {
     if (parser_) {
@@ -119,6 +127,7 @@ class TrtBackend : public BaseBackend {
   std::vector<TrtValueInfo> outputs_desc_;
   std::map<std::string, FDDeviceBuffer> inputs_device_buffer_;
   std::map<std::string, FDDeviceBuffer> outputs_device_buffer_;
+  std::map<std::string, int> io_name_index_;
 
   std::string calibration_str_;
 
diff --git a/fastdeploy/core/fd_type.cc b/fastdeploy/core/fd_type.cc
index 45ca90a1b..5712bb278 100644
--- a/fastdeploy/core/fd_type.cc
+++ b/fastdeploy/core/fd_type.cc
@@ -182,4 +182,31 @@ const FDDataType TypeToDataType<uint8_t>::dtype = UINT8;
 template <>
 const FDDataType TypeToDataType<int8_t>::dtype = INT8;
 
+std::string Str(const ModelFormat& f) {
+  if (f == ModelFormat::PADDLE) {
+    return "ModelFormat::PADDLE";
+  } else if (f == ModelFormat::ONNX) {
+    return "ModelFormat::ONNX";
+  }else if (f == ModelFormat::RKNN) {
+    return "ModelFormat::RKNN";
+  } else if (f == ModelFormat::TORCHSCRIPT) {
+    return "ModelFormat::TORCHSCRIPT";
+  }
+  return "UNKNOWN-ModelFormat";
+}
+
+std::ostream& operator<<(std::ostream& out, const ModelFormat& format) {
+  if (format == ModelFormat::PADDLE) {
+    out << "ModelFormat::PADDLE";
+  } else if (format == ModelFormat::ONNX) {
+    out << "ModelFormat::ONNX";
+  } else if (format == ModelFormat::RKNN) {
+    out << "ModelFormat::RKNN";
+  } else if (format == ModelFormat::TORCHSCRIPT) {
+    out << "ModelFormat::TORCHSCRIPT";
+  }
+  out << "UNKNOWN-ModelFormat";
+  return out;
+}
+
 }  // namespace fastdeploy
diff --git a/fastdeploy/core/fd_type.h b/fastdeploy/core/fd_type.h
index 5236601b0..131de20d4 100644
--- a/fastdeploy/core/fd_type.h
+++ b/fastdeploy/core/fd_type.h
@@ -65,4 +65,16 @@ struct FASTDEPLOY_DECL TypeToDataType {
   static const FDDataType dtype;
 };
 
+/*! Deep learning model format */
+enum ModelFormat {
+  AUTOREC,      ///< Auto recognize the model format by model file name
+  PADDLE,       ///< Model with paddlepaddle format
+  ONNX,         ///< Model with ONNX format
+  RKNN,         ///< Model with RKNN format
+  TORCHSCRIPT,  ///< Model with TorchScript format
+};
+
+FASTDEPLOY_DECL std::ostream& operator<<(std::ostream& out,
+                                         const ModelFormat& format);
+
 }  // namespace fastdeploy
diff --git a/fastdeploy/runtime.cc b/fastdeploy/runtime.cc
index 0a9dff535..94ea9de0b 100755
--- a/fastdeploy/runtime.cc
+++ b/fastdeploy/runtime.cc
@@ -102,19 +102,6 @@ std::string Str(const Backend& b) {
   return "UNKNOWN-Backend";
 }
 
-std::string Str(const ModelFormat& f) {
-  if (f == ModelFormat::PADDLE) {
-    return "ModelFormat::PADDLE";
-  } else if (f == ModelFormat::ONNX) {
-    return "ModelFormat::ONNX";
-  }else if (f == ModelFormat::RKNN) {
-    return "ModelFormat::RKNN";
-  } else if (f == ModelFormat::TORCHSCRIPT) {
-    return "ModelFormat::TORCHSCRIPT";
-  }
-  return "UNKNOWN-ModelFormat";
-}
-
 std::ostream& operator<<(std::ostream& out, const Backend& backend) {
   if (backend == Backend::ORT) {
     out << "Backend::ORT";
@@ -135,20 +122,6 @@ std::ostream& operator<<(std::ostream& out, const Backend& backend) {
   return out;
 }
 
-std::ostream& operator<<(std::ostream& out, const ModelFormat& format) {
-  if (format == ModelFormat::PADDLE) {
-    out << "ModelFormat::PADDLE";
-  } else if (format == ModelFormat::ONNX) {
-    out << "ModelFormat::ONNX";
-  } else if (format == ModelFormat::RKNN) {
-    out << "ModelFormat::RKNN";
-  } else if (format == ModelFormat::TORCHSCRIPT) {
-    out << "ModelFormat::TORCHSCRIPT";
-  }
-  out << "UNKNOWN-ModelFormat";
-  return out;
-}
-
 bool CheckModelFormat(const std::string& model_file,
                       const ModelFormat& model_format) {
   if (model_format == ModelFormat::PADDLE) {
@@ -411,6 +384,10 @@ void RuntimeOption::SetTrtCacheFile(const std::string& cache_file_path) {
   trt_serialize_file = cache_file_path;
 }
 
+void RuntimeOption::SetOpenVINOStreams(int num_streams) {
+  ov_num_streams = num_streams;
+}
+
 bool Runtime::Compile(std::vector<std::vector<FDTensor>>& prewarm_tensors,
                       const RuntimeOption& _option) {
 #ifdef ENABLE_POROS_BACKEND
@@ -582,6 +559,8 @@ bool Runtime::Infer(std::vector<FDTensor>& input_tensors,
 void Runtime::CreatePaddleBackend() {
 #ifdef ENABLE_PADDLE_BACKEND
   auto pd_option = PaddleBackendOption();
+  pd_option.model_file = option.model_file;
+  pd_option.params_file = option.params_file;
   pd_option.enable_mkldnn = option.pd_enable_mkldnn;
   pd_option.enable_log_info = option.pd_enable_log_info;
   pd_option.mkldnn_cache_size = option.pd_mkldnn_cache_size;
@@ -642,6 +621,7 @@ void Runtime::CreateOpenVINOBackend() {
 #ifdef ENABLE_OPENVINO_BACKEND
   auto ov_option = OpenVINOBackendOption();
   ov_option.cpu_thread_num = option.cpu_thread_num;
+  ov_option.ov_num_streams = option.ov_num_streams;
   FDASSERT(option.model_format == ModelFormat::PADDLE ||
                option.model_format == ModelFormat::ONNX,
            "OpenVINOBackend only support model format of ModelFormat::PADDLE / "
@@ -699,6 +679,9 @@ void Runtime::CreateOrtBackend() {
 void Runtime::CreateTrtBackend() {
 #ifdef ENABLE_TRT_BACKEND
   auto trt_option = TrtBackendOption();
+  trt_option.model_file = option.model_file;
+  trt_option.params_file = option.params_file;
+  trt_option.model_format = option.model_format;
   trt_option.gpu_id = option.device_id;
   trt_option.enable_fp16 = option.trt_enable_fp16;
   trt_option.enable_int8 = option.trt_enable_int8;
@@ -771,4 +754,26 @@ void Runtime::CreateRKNPU2Backend() {
 #endif
 }
 
+Runtime* Runtime::Clone(void* stream, int device_id) {
+  Runtime* runtime = new Runtime();
+  if (option.backend != Backend::OPENVINO
+      && option.backend != Backend::PDINFER
+      && option.backend != Backend::TRT
+      ) {
+    runtime->Init(option);
+    FDWARNING << "Only OpenVINO/Paddle Inference/TensorRT support \
+                  clone engine to  reduce CPU/GPU memory usage now. For "
+              << option.backend
+              << ", FastDeploy will create a new engine which \
+                  will not share memory  with the current runtime."
+              << std::endl;
+    return runtime;
+  }
+  FDINFO << "Runtime Clone with Backend:: " << Str(option.backend) << " in " << Str(option.device)
+         << "." << std::endl;
+  runtime->option = option;
+  runtime->backend_ = backend_->Clone(stream, device_id);
+  return runtime;
+}
+
 }  // namespace fastdeploy
diff --git a/fastdeploy/runtime.h b/fastdeploy/runtime.h
index e50e262c2..7ab6f1fb2 100644
--- a/fastdeploy/runtime.h
+++ b/fastdeploy/runtime.h
@@ -35,38 +35,27 @@ namespace fastdeploy {
 
 /*! Inference backend supported in FastDeploy */
 enum Backend {
-  UNKNOWN, ///< Unknown inference backend
+  UNKNOWN,   ///< Unknown inference backend
   ORT,     ///< ONNX Runtime, support Paddle/ONNX format model, CPU / Nvidia GPU
-  TRT,     ///< TensorRT, support Paddle/ONNX format model, Nvidia GPU only
-  PDINFER, ///< Paddle Inference, support Paddle format model, CPU / Nvidia GPU
-  POROS,   ///< Poros, support TorchScript format model, CPU / Nvidia GPU
-  OPENVINO, ///< Intel OpenVINO, support Paddle/ONNX format, CPU only
+  TRT,      ///< TensorRT, support Paddle/ONNX format model, Nvidia GPU only
+  PDINFER,  ///< Paddle Inference, support Paddle format model, CPU / Nvidia GPU
+  POROS,    ///< Poros, support TorchScript format model, CPU / Nvidia GPU
+  OPENVINO,  ///< Intel OpenVINO, support Paddle/ONNX format, CPU only
   LITE,     ///< Paddle Lite, support Paddle format model, ARM CPU only
   RKNPU2,   ///< RKNPU2, support RKNN format model, Rockchip NPU only
 };
 
-/*! Deep learning model format */
-enum ModelFormat {
-  AUTOREC,     ///< Auto recognize the model format by model file name
-  PADDLE,      ///< Model with paddlepaddle format
-  ONNX,        ///< Model with ONNX format
-  RKNN,        ///< Model with RKNN format
-  TORCHSCRIPT, ///< Model with TorchScript format
-};
-
 FASTDEPLOY_DECL std::ostream& operator<<(std::ostream& out,
                                          const Backend& backend);
-FASTDEPLOY_DECL std::ostream& operator<<(std::ostream& out,
-                                         const ModelFormat& format);
 
 /*! Paddle Lite power mode for mobile device. */
 enum LitePowerMode {
-  LITE_POWER_HIGH = 0,      ///< Use Lite Backend with high power mode
-  LITE_POWER_LOW = 1,       ///< Use Lite Backend with low power mode
-  LITE_POWER_FULL = 2,      ///< Use Lite Backend with full power mode
-  LITE_POWER_NO_BIND = 3,   ///< Use Lite Backend with no bind power mode
-  LITE_POWER_RAND_HIGH = 4, ///< Use Lite Backend with rand high mode
-  LITE_POWER_RAND_LOW = 5   ///< Use Lite Backend with rand low power mode
+  LITE_POWER_HIGH = 0,       ///< Use Lite Backend with high power mode
+  LITE_POWER_LOW = 1,        ///< Use Lite Backend with low power mode
+  LITE_POWER_FULL = 2,       ///< Use Lite Backend with full power mode
+  LITE_POWER_NO_BIND = 3,    ///< Use Lite Backend with no bind power mode
+  LITE_POWER_RAND_HIGH = 4,  ///< Use Lite Backend with rand high mode
+  LITE_POWER_RAND_LOW = 5    ///< Use Lite Backend with rand low power mode
 };
 
 FASTDEPLOY_DECL std::string Str(const Backend& b);
@@ -105,8 +94,10 @@ struct FASTDEPLOY_DECL RuntimeOption {
   /// Use Nvidia GPU to inference
   void UseGpu(int gpu_id = 0);
 
-  void UseRKNPU2(fastdeploy::rknpu2::CpuName rknpu2_name = fastdeploy::rknpu2::CpuName::RK3588,
-                 fastdeploy::rknpu2::CoreMask rknpu2_core = fastdeploy::rknpu2::CoreMask::RKNN_NPU_CORE_0);
+  void UseRKNPU2(fastdeploy::rknpu2::CpuName rknpu2_name
+                             = fastdeploy::rknpu2::CpuName::RK3588,
+                 fastdeploy::rknpu2::CoreMask rknpu2_core
+                             = fastdeploy::rknpu2::CoreMask::RKNN_NPU_CORE_0);
 
   void SetExternalStream(void* external_stream);
 
@@ -242,6 +233,11 @@ struct FASTDEPLOY_DECL RuntimeOption {
    */
   void DisablePaddleTrtCollectShape();
 
+  /*
+   * @brief Set number of streams by the OpenVINO backends
+   */
+  void SetOpenVINOStreams(int num_streams);
+
   /** \Use Graphcore IPU to inference.
    *
    * \param[in] device_num the number of IPUs.
@@ -331,13 +327,19 @@ struct FASTDEPLOY_DECL RuntimeOption {
   int unconst_ops_thres = -1;
   std::string poros_file = "";
 
+  // ======Only for OpenVINO Backend=======
+  int ov_num_streams = 1;
+
   // ======Only for RKNPU2 Backend=======
-  fastdeploy::rknpu2::CpuName rknpu2_cpu_name_ = fastdeploy::rknpu2::CpuName::RK3588;
-  fastdeploy::rknpu2::CoreMask rknpu2_core_mask_ = fastdeploy::rknpu2::CoreMask::RKNN_NPU_CORE_AUTO;
+  fastdeploy::rknpu2::CpuName rknpu2_cpu_name_
+            = fastdeploy::rknpu2::CpuName::RK3588;
+  fastdeploy::rknpu2::CoreMask rknpu2_core_mask_
+            = fastdeploy::rknpu2::CoreMask::RKNN_NPU_CORE_AUTO;
 
   std::string model_file = "";  // Path of model file
-  std::string params_file = ""; // Path of parameters file, can be empty
-  ModelFormat model_format = ModelFormat::AUTOREC; // format of input model
+  std::string params_file = "";  // Path of parameters file, can be empty
+  // format of input model
+  ModelFormat model_format = ModelFormat::AUTOREC; 
 };
 
 /*! @brief Runtime object used to inference the loaded model on different devices
@@ -384,6 +386,14 @@ struct FASTDEPLOY_DECL Runtime {
    */
   std::vector<TensorInfo> GetOutputInfos();
 
+  /** \brief Clone new Runtime when multiple instances of the same model are created
+   *
+   * \param[in] stream CUDA Stream, defualt param is nullptr
+   * \return new Runtime* by this clone
+   */
+  Runtime* Clone(void* stream = nullptr,
+                 int device_id = -1);
+
   RuntimeOption option;
 
  private:
@@ -395,4 +405,4 @@ struct FASTDEPLOY_DECL Runtime {
   void CreateRKNPU2Backend();
   std::unique_ptr<BaseBackend> backend_;
 };
-} // namespace fastdeploy
+}  // namespace fastdeploy
diff --git a/serving/docs/zh_CN/model_configuration.md b/serving/docs/zh_CN/model_configuration.md
index 7a19aa8fa..ce3abc075 100644
--- a/serving/docs/zh_CN/model_configuration.md
+++ b/serving/docs/zh_CN/model_configuration.md
@@ -142,8 +142,10 @@ optimization {
     cpu_execution_accelerator : [
       {
         name : "openvino"
-        # 设置推理并行计算线程数为4
+        # 设置推理并行计算线程数为4（所有实例总共线程数）
         parameters { key: "cpu_threads" value: "4" }
+        # 设置OpenVINO的num_streams（一般设置为跟实例数一致）
+        parameters { key: "num_streams" value: "1" }
       }
     ]
   }
diff --git a/serving/src/fastdeploy_runtime.cc b/serving/src/fastdeploy_runtime.cc
index 32d0127e0..2e839b5ac 100644
--- a/serving/src/fastdeploy_runtime.cc
+++ b/serving/src/fastdeploy_runtime.cc
@@ -91,6 +91,9 @@ class ModelState : public BackendModel {
 
   // Runtime options used when creating a FastDeploy Runtime.
   std::unique_ptr<fastdeploy::RuntimeOption> runtime_options_;
+  bool model_load_;
+  fastdeploy::Runtime* main_runtime_;
+  bool is_clone_ = true;
 
   // model_outputs is a map that contains unique outputs that the model must
   // provide. In the model configuration, the output in the state configuration
@@ -165,7 +168,7 @@ TRITONSERVER_Error* ModelState::Create(TRITONBACKEND_Model* triton_model,
 }
 
 ModelState::ModelState(TRITONBACKEND_Model* triton_model)
-    : BackendModel(triton_model) {
+    : BackendModel(triton_model), model_load_(false), main_runtime_(nullptr), is_clone_(true) {
   // Create runtime options that will be cloned and used for each
   // instance when creating that instance's runtime.
   runtime_options_.reset(new fastdeploy::RuntimeOption());
@@ -218,19 +221,6 @@ ModelState::ModelState(TRITONBACKEND_Model* triton_model)
               THROW_IF_BACKEND_MODEL_ERROR(
                   ParseIntValue(value_string, &cpu_thread_num));
               runtime_options_->SetCpuThreadNum(cpu_thread_num);
-              // } else if (param_key == "graph_level") {
-              //   THROW_IF_BACKEND_MODEL_ERROR(ParseIntValue(
-              //       value_string, &runtime_options_->ort_graph_opt_level));
-              // } else if (param_key == "inter_op_num_threads") {
-              //   THROW_IF_BACKEND_MODEL_ERROR(ParseIntValue(
-              //       value_string,
-              //       &runtime_options_->ort_inter_op_num_threads));
-              // } else if (param_key == "execution_mode") {
-              //   THROW_IF_BACKEND_MODEL_ERROR(ParseIntValue(
-              //       value_string, &runtime_options_->ort_execution_mode));
-              // } else if (param_key == "capacity") {
-              //     THROW_IF_BACKEND_MODEL_ERROR(ParseIntValue(
-              //     value_string, &runtime_options_->pd_mkldnn_cache_size));
             } else if (param_key == "use_mkldnn") {
               bool pd_enable_mkldnn;
               THROW_IF_BACKEND_MODEL_ERROR(
@@ -238,8 +228,16 @@ ModelState::ModelState(TRITONBACKEND_Model* triton_model)
               runtime_options_->SetPaddleMKLDNN(pd_enable_mkldnn);
             } else if (param_key == "use_paddle_log") {
                 runtime_options_->EnablePaddleLogInfo();
+            } else if (param_key == "num_streams") {
+                int num_streams;
+                THROW_IF_BACKEND_MODEL_ERROR(
+                  ParseIntValue(value_string, &num_streams));
+                runtime_options_->SetOpenVINOStreams(num_streams);
+            } else if (param_key == "is_clone") {
+                THROW_IF_BACKEND_MODEL_ERROR(
+                  ParseBoolValue(value_string, &is_clone_));
             } else if (param_key == "use_ipu") {
-              runtime_options_->UseIpu();
+              // runtime_options_->UseIpu();
             }
           }
         }
@@ -290,17 +288,6 @@ ModelState::ModelState(TRITONBACKEND_Model* triton_model)
               std::string value_string;
               THROW_IF_BACKEND_MODEL_ERROR(
                   params.MemberAsString(param_key.c_str(), &value_string));
-              // if (param_key == "graph_level") {
-              //   THROW_IF_BACKEND_MODEL_ERROR(ParseIntValue(
-              //       value_string, &runtime_options_->ort_graph_opt_level));
-              // } else if (param_key == "inter_op_num_threads") {
-              //   THROW_IF_BACKEND_MODEL_ERROR(ParseIntValue(
-              //       value_string,
-              //       &runtime_options_->ort_inter_op_num_threads));
-              // } else if (param_key == "execution_mode") {
-              //   THROW_IF_BACKEND_MODEL_ERROR(ParseIntValue(
-              //       value_string, &runtime_options_->ort_execution_mode));
-              // }
               if (param_key == "precision") {
                 std::transform(value_string.begin(), value_string.end(),
                                value_string.begin(), ::tolower);
@@ -325,7 +312,10 @@ ModelState::ModelState(TRITONBACKEND_Model* triton_model)
                 runtime_options_->EnablePaddleToTrt();
               } else if (param_key == "use_paddle_log") {
                 runtime_options_->EnablePaddleLogInfo();
-              }
+              } else if (param_key == "is_clone") {
+                THROW_IF_BACKEND_MODEL_ERROR(
+                  ParseBoolValue(value_string, &is_clone_));
+              } 
             }
           }
         }
@@ -340,64 +330,79 @@ TRITONSERVER_Error* ModelState::LoadModel(
     const int32_t instance_group_device_id, std::string* model_path,
     std::string* params_path, fastdeploy::Runtime** runtime,
     cudaStream_t stream) {
-  auto dir_path = JoinPath({RepositoryPath(), std::to_string(Version())});
-  {
-    // ONNX Format
-    bool exists;
-    *model_path = JoinPath({dir_path, "model.onnx"});
-    RETURN_IF_ERROR(FileExists(*model_path, &exists));
+  
+  // FastDeploy Runtime creation is not thread-safe, so multiple creations
+  // are serialized with a global lock.
+  // The Clone interface can be invoked only when the main_runtime_ is created.
+  static std::mutex global_context_mu;
+  std::lock_guard<std::mutex> glock(global_context_mu);
 
-    // Paddle Formax
-    if (not exists) {
-      *model_path = JoinPath({dir_path, "model.pdmodel"});
-      RETURN_IF_ERROR(FileExists(*model_path, &exists));
-      if (not exists) {
-        return TRITONSERVER_ErrorNew(
-            TRITONSERVER_ERROR_NOT_FOUND,
-            std::string(
-                "Model should be named as 'model.onnx' or 'model.pdmodel'")
-                .c_str());
-      }
-      *params_path = JoinPath({dir_path, "model.pdiparams"});
-      RETURN_IF_ERROR(FileExists(*params_path, &exists));
-      if (not exists) {
-        return TRITONSERVER_ErrorNew(
-            TRITONSERVER_ERROR_NOT_FOUND,
-            std::string("Paddle params should be named as 'model.pdiparams' or "
-                        "not provided.'")
-                .c_str());
-      }
-      runtime_options_->model_format = fastdeploy::ModelFormat::PADDLE;
-      runtime_options_->model_file = *model_path;
-      runtime_options_->params_file = *params_path;
-    } else {
-      runtime_options_->model_format = fastdeploy::ModelFormat::ONNX;
-      runtime_options_->model_file = *model_path;
+  if(model_load_ && is_clone_) {
+    if(main_runtime_ == nullptr) {
+      return TRITONSERVER_ErrorNew(TRITONSERVER_ERROR_NOT_FOUND,
+                                  std::string("main_runtime is nullptr").c_str());
     }
-  }
-
-  // GPU
-#ifdef TRITON_ENABLE_GPU
-  if ((instance_group_kind == TRITONSERVER_INSTANCEGROUPKIND_GPU) ||
-      (instance_group_kind == TRITONSERVER_INSTANCEGROUPKIND_AUTO)) {
-    runtime_options_->UseGpu(instance_group_device_id);
-    runtime_options_->SetExternalStream((void*)stream);
+    *runtime = main_runtime_->Clone((void*)stream, instance_group_device_id);
   } else {
-    runtime_options_->UseCpu();
-  }
-#else
-  if (runtime_options_->device != fastdeploy::Device::IPU) {
-    // If Device is set to IPU, just skip CPU setting.
-    runtime_options_->UseCpu();
-  }
-#endif  // TRITON_ENABLE_GPU
+    auto dir_path = JoinPath({RepositoryPath(), std::to_string(Version())});
+    {
+      // ONNX Format
+      bool exists;
+      *model_path = JoinPath({dir_path, "model.onnx"});
+      RETURN_IF_ERROR(FileExists(*model_path, &exists));
 
-  *runtime = new fastdeploy::Runtime();
-  if (!(*runtime)->Init(*runtime_options_)) {
-    return TRITONSERVER_ErrorNew(TRITONSERVER_ERROR_NOT_FOUND,
-                                 std::string("Runtime init error").c_str());
-  }
+      // Paddle Formax
+      if (not exists) {
+        *model_path = JoinPath({dir_path, "model.pdmodel"});
+        RETURN_IF_ERROR(FileExists(*model_path, &exists));
+        if (not exists) {
+          return TRITONSERVER_ErrorNew(
+              TRITONSERVER_ERROR_NOT_FOUND,
+              std::string(
+                  "Model should be named as 'model.onnx' or 'model.pdmodel'")
+                  .c_str());
+        }
+        *params_path = JoinPath({dir_path, "model.pdiparams"});
+        RETURN_IF_ERROR(FileExists(*params_path, &exists));
+        if (not exists) {
+          return TRITONSERVER_ErrorNew(
+              TRITONSERVER_ERROR_NOT_FOUND,
+              std::string("Paddle params should be named as 'model.pdiparams' or "
+                          "not provided.'")
+                  .c_str());
+        }
+        runtime_options_->model_format = fastdeploy::ModelFormat::PADDLE;
+        runtime_options_->model_file = *model_path;
+        runtime_options_->params_file = *params_path;
+      } else {
+        runtime_options_->model_format = fastdeploy::ModelFormat::ONNX;
+        runtime_options_->model_file = *model_path;
+      }
+    }
 
+    // GPU
+  #ifdef TRITON_ENABLE_GPU
+    if ((instance_group_kind == TRITONSERVER_INSTANCEGROUPKIND_GPU) ||
+        (instance_group_kind == TRITONSERVER_INSTANCEGROUPKIND_AUTO)) {
+      runtime_options_->UseGpu(instance_group_device_id);
+      runtime_options_->SetExternalStream((void*)stream);
+    } else if (runtime_options_->device != fastdeploy::Device::IPU) {
+      runtime_options_->UseCpu();
+    }
+  #else
+    if (runtime_options_->device != fastdeploy::Device::IPU) {
+      // If Device is set to IPU, just skip CPU setting.
+      runtime_options_->UseCpu();
+    }
+  #endif  // TRITON_ENABLE_GPU
+
+    *runtime = main_runtime_ = new fastdeploy::Runtime();
+    if (!(*runtime)->Init(*runtime_options_)) {
+      return TRITONSERVER_ErrorNew(TRITONSERVER_ERROR_NOT_FOUND,
+                                  std::string("Runtime init error").c_str());
+    }
+    model_load_ = true;
+  }
   return nullptr;  // success
 }