diff --git a/mindspore/ccsrc/runtime/framework/actor/gather_actor.cc b/mindspore/ccsrc/runtime/framework/actor/gather_actor.cc
index efa0bc6bc61..fb35a021092 100644
--- a/mindspore/ccsrc/runtime/framework/actor/gather_actor.cc
+++ b/mindspore/ccsrc/runtime/framework/actor/gather_actor.cc
@@ -38,7 +38,7 @@ void GatherActor::Init() {
 
     auto data = std::make_unique<OpData<DeviceTensor>>(data_arrow->to_op_id_, nullptr, data_arrow->to_input_index_);
     output_data_.emplace_back(data.get());
-    output_data_by_output_index_[data_arrow->from_output_index_].emplace_back(std::move(data));
+    output_data_by_output_index_[IntToSize(data_arrow->from_output_index_)].emplace_back(std::move(data));
   }
 }
 
@@ -113,7 +113,7 @@ void GatherActor::SendOutput(OpContext<DeviceTensor> *context) const {
   // 2.Send output result.
   for (const auto &result_arrow : output_result_arrows_) {
     MS_EXCEPTION_IF_NULL(result_arrow);
-    size_t from_index = result_arrow->from_output_index_;
+    size_t from_index = IntToSize(result_arrow->from_output_index_);
     const auto &front_node = data_nodes_[from_index].first;
     for (const auto &backend_node : front_to_backend_parameter_.at(front_node)) {
       if (AnfAlgo::GetMutableOutputAddr(backend_node.first, backend_node.second, false).get() ==
diff --git a/mindspore/ccsrc/runtime/framework/actor/gather_actor.h b/mindspore/ccsrc/runtime/framework/actor/gather_actor.h
index de431eee227..3a0f45de737 100644
--- a/mindspore/ccsrc/runtime/framework/actor/gather_actor.h
+++ b/mindspore/ccsrc/runtime/framework/actor/gather_actor.h
@@ -85,7 +85,7 @@ class GatherActor : public OpActor<DeviceTensor> {
   // The device tensors for launch.
   std::vector<DeviceTensor *> input_device_tensors_;
   // The branch if for current step.
-  int input_branch_id_;
+  int input_branch_id_{kInvalidBranchID};
 
   // Input data.
   std::unordered_map<uuids::uuid *, std::unordered_map<size_t, std::stack<DeviceTensor *>>> input_data_;
diff --git a/mindspore/ccsrc/runtime/framework/actor/switch_actor.cc b/mindspore/ccsrc/runtime/framework/actor/switch_actor.cc
index 6623444c117..5ff8be84fd5 100644
--- a/mindspore/ccsrc/runtime/framework/actor/switch_actor.cc
+++ b/mindspore/ccsrc/runtime/framework/actor/switch_actor.cc
@@ -208,7 +208,7 @@ void SwitchActor::AddInput(const KernelWithIndex node_with_index, const size_t b
       branch_inputs_pos_[branch].push_back(iter - input_nodes_.begin());
       return;
     }
-    device_tensor_store_keys_.push_back({input_nodes_.size(), node.get()});
+    device_tensor_store_keys_.emplace_back(input_nodes_.size(), node.get());
     branch_inputs_pos_[branch].push_back(input_nodes_.size());
     input_nodes_.push_back(node_with_index);
     return;
@@ -245,7 +245,7 @@ void SwitchActor::AddInput(const AnfNodePtr &node, const size_t branch) {
   } else if (IsCallNode(real_input.first)) {
     std::vector<AnfNodePtr> call_nodes;
     const auto call_output_num = FetchOutputSizebyCallNode(real_input.first, &call_nodes);
-    if (call_output_num <= 0) {
+    if (call_output_num == 0) {
       MS_LOG(EXCEPTION) << "Invalid output num for call input:" << AnfAlgo::GetNodeDebugString(real_input.first);
     }
     for (size_t i = 0; i < call_output_num; ++i) {
@@ -268,7 +268,7 @@ size_t SwitchActor::GetIndex(OpContext<DeviceTensor> *context) {
         input_branch_ids_[context->sequential_num_].empty()) {
       MS_LOG(ERROR) << "Invalid branch id for actor:" + GetAID().Name();
     }
-    size_t branch_id = input_branch_ids_[context->sequential_num_].top();
+    auto branch_id = input_branch_ids_[context->sequential_num_].top();
     input_branch_ids_[context->sequential_num_].pop();
     if (branch_id_to_index_.find(branch_id) == branch_id_to_index_.end()) {
       MS_LOG(ERROR) << "Invalid branch id for switch actor:" + GetAID().Name() +
@@ -278,9 +278,8 @@ size_t SwitchActor::GetIndex(OpContext<DeviceTensor> *context) {
   }
 
   DeviceTensor *device_tensor = input_device_tensors_[0];
-  if (device_tensor == nullptr) {
-    MS_LOG(ERROR) << "Index of switch actor is empty:" + GetAID().Name();
-  }
+  MS_EXCEPTION_IF_NULL(device_tensor);
+
   auto inputs = node_->inputs();
   TypeId type_id = AnfAlgo::GetOutputInferDataType(inputs[kSwitchCondPos], 0);
   size_t size = abstract::TypeIdSize(type_id);
@@ -291,7 +290,10 @@ size_t SwitchActor::GetIndex(OpContext<DeviceTensor> *context) {
   int64_t index = 0;
   char buf[kMaxSwitchCondSize] = {0};
   ShapeVector host_shape;
-  device_tensor->SyncDeviceToHost(host_shape, size, type_id, static_cast<void *>(buf));
+  if (!device_tensor->SyncDeviceToHost(host_shape, size, type_id, static_cast<void *>(buf))) {
+    MS_LOG(ERROR) << GetAID().Name() + " get index from device address failed, type id:" + std::to_string(type_id) +
+                       ", device type:" + std::to_string(static_cast<int>(device_context_->GetDeviceAddressType()));
+  }
 
   if (type_id == TypeId::kNumberTypeInt32) {
     index = static_cast<int64_t>((static_cast<int32_t *>(static_cast<void *>(buf)))[0]);
@@ -306,7 +308,7 @@ size_t SwitchActor::GetIndex(OpContext<DeviceTensor> *context) {
 
   // SwitchLayer node support negative index range [-size, -1].
   if (index < 0) {
-    index += branch_func_graph_.size();
+    index += SizeToInt(branch_func_graph_.size());
   }
   return static_cast<size_t>(index);
 }
@@ -403,7 +405,7 @@ void SwitchActor::SendOutput(OpContext<DeviceTensor> *context) {
         " total:" + std::to_string(branch_inputs_pos_[index].size()) + " actor:" + GetAID().Name();
       SET_OPCONTEXT_FAIL_RET_WITH_ERROR((*context), error_info);
     }
-    size_t from_index = branch_inputs_pos_[index][result_arrow->from_output_index_];
+    size_t from_index = branch_inputs_pos_[index][IntToSize(result_arrow->from_output_index_)];
 
     MS_LOG(DEBUG) << "Switch actor:" << GetAID() << " send result addr:" << input_device_tensors_[from_index];
     bool is_send = false;
diff --git a/mindspore/ccsrc/runtime/framework/control_node_parser.cc b/mindspore/ccsrc/runtime/framework/control_node_parser.cc
index 8e8dd15fe3c..0110bc9fc78 100644
--- a/mindspore/ccsrc/runtime/framework/control_node_parser.cc
+++ b/mindspore/ccsrc/runtime/framework/control_node_parser.cc
@@ -556,7 +556,7 @@ bool IsSubCallNode(const AnfNodePtr &node) {
 
 std::vector<KernelWithIndex> FetchAllRealInputNodeByParameter(const KernelWithIndex &node) {
   std::vector<KernelWithIndex> parameters;
-  const auto &real_node_with_index = AnfAlgo::VisitKernelWithReturnType(node.first, node.second);
+  const auto &real_node_with_index = AnfAlgo::VisitKernelWithReturnType(node.first, SizeToInt(node.second));
   const auto &real_node = real_node_with_index.first;
   if (real_node->isa<Parameter>()) {
     if (!HasAbstractRef(real_node) && !HasAbstractMonad(real_node)) {
@@ -749,7 +749,7 @@ void ControlNodeParser::Parse(const std::vector<AnfNodePtr> &control_nodes, cons
     }
   }
 
-  FetchFrontToBackendParameter(graphs, device_contexts, control_nodes, real_to_formal_front_parameters,
+  FetchFrontToBackendParameter(graphs, device_contexts, real_to_formal_front_parameters,
                                formal_to_real_front_parameters);
 
   FetchFuncGraphToParameter(control_nodes);
@@ -924,14 +924,14 @@ void ControlNodeParser::FetchFrontValueNode(const std::vector<AnfNodePtr> &contr
                          << AnfAlgo::GetNodeDebugString(parameters[i - kCallInputStartPos])
                          << ", used the default format";
             CreateDeviceTensorForFrontParameter(inputs[i], device_contexts[0]);
-            front_value_nodes_.push_back({inputs[i], device_contexts[0]});
+            front_value_nodes_.emplace_back(inputs[i], device_contexts[0]);
             continue;
           }
 
           const auto &backend_node = front_to_backend_parameters_[parameters[i - kCallInputStartPos]].first;
           const auto &device_context = front_to_backend_parameters_[parameters[i - kCallInputStartPos]].second;
           CreateDeviceTensorForValueNode(inputs[i], backend_node, device_context);
-          front_value_nodes_.push_back({inputs[i], device_context});
+          front_value_nodes_.emplace_back(inputs[i], device_context);
         }
       }
     }
@@ -940,18 +940,15 @@ void ControlNodeParser::FetchFrontValueNode(const std::vector<AnfNodePtr> &contr
   for (size_t index = 0; index < graphs.size(); ++index) {
     const auto &graph = graphs[index];
     MS_EXCEPTION_IF_NULL(graph);
-    auto execution_order = graph->execution_order();
 
     for (const auto &parameter : graph->input_nodes()) {
-      const auto &front_node = graph->GetFrontAnfByBackendAnf(parameter);
-      const auto &internal_node = graph->GetFrontNodeByInternalParameter(parameter);
-
       MS_EXCEPTION_IF_NULL(parameter);
+
       if (IsInternalParameter(parameter, graph)) {
         auto front_node_with_index = graph->GetFrontNodeByInternalParameter(parameter);
         MS_EXCEPTION_IF_NULL(front_node_with_index.first);
-        const auto &front_output_with_index =
-          AnfAlgo::VisitKernelWithReturnType(front_node_with_index.first, front_node_with_index.second, false);
+        const auto &front_output_with_index = AnfAlgo::VisitKernelWithReturnType(
+          front_node_with_index.first, SizeToInt(front_node_with_index.second), false);
         auto front_output_node = front_output_with_index.first;
         MS_EXCEPTION_IF_NULL(front_output_node);
         if (AnfAlgo::CheckPrimitiveType(front_output_node, prim::kPrimSwitch)) {
@@ -959,7 +956,7 @@ void ControlNodeParser::FetchFrontValueNode(const std::vector<AnfNodePtr> &contr
           FetchValueNodeBySwitchNode(front_output_node, &value_nodes);
           for (const auto value_node : value_nodes) {
             CreateDeviceTensorForValueNode(value_node, parameter, device_contexts[index]);
-            front_value_nodes_.push_back({value_node, device_contexts[index]});
+            front_value_nodes_.emplace_back(value_node, device_contexts[index]);
           }
         }
       }
@@ -975,7 +972,7 @@ void ControlNodeParser::FetchFrontValueNode(const std::vector<AnfNodePtr> &contr
       if (output->isa<ValueNode>() && GetFrontValueNodeDeviceContext(output) == nullptr) {
         const auto &device_context = call_node_to_backend_parameter.second.second;
         CreateDeviceTensorForValueNode(output, call_node_to_backend_parameter.second.first, device_context);
-        front_value_nodes_.push_back({output, device_context});
+        front_value_nodes_.emplace_back(output, device_context);
       }
     }
   }
@@ -1054,7 +1051,7 @@ void ControlNodeParser::FetchFrontToFrontParameter(
       if (AnfAlgo::CheckPrimitiveType(inputs[0], prim::kPrimSwitch) ||
           AnfAlgo::CheckPrimitiveType(inputs[0], prim::kPrimSwitchLayer)) {
         std::vector<AnfNodePtr> call_inputs;
-        call_inputs.assign(inputs.begin() + kCallInputStartPos, inputs.end());
+        call_inputs.assign(inputs.begin() + SizeToInt(kCallInputStartPos), inputs.end());
         switch_input_parse(inputs[0], call_inputs);
       } else if (IsCallNode(inputs[0])) {
         continue;
@@ -1095,7 +1092,7 @@ std::vector<AnfNodePtr> ControlNodeParser::FetchControlNodeParameter(const std::
     if (backend_iter == front_to_backend_parameters_.end()) {
       CreateDeviceTensorForFrontParameter(parameter, device_context);
       front_to_backend_parameters_[parameter] = {parameter, device_context};
-      front_parameters_.push_back({parameter, device_context});
+      front_parameters_.emplace_back(parameter, device_context);
     }
   }
 
@@ -1215,7 +1212,6 @@ std::vector<KernelWithIndex> FetchParameterbyKernelGraph(const KernelGraphPtr &g
 
 void ControlNodeParser::FetchFrontToBackendParameter(const std::vector<KernelGraphPtr> &graphs,
                                                      const std::vector<DeviceContext *> &device_contexts,
-                                                     const std::vector<AnfNodePtr> &control_nodes,
                                                      const RealToFormalNode &real_to_formal_front_parameters,
                                                      const RealToFormalNode &formal_to_real_front_parameters) {
   if (graphs.size() != device_contexts.size()) {
@@ -1356,12 +1352,12 @@ void ControlNodeParser::FetchBackendOutputByFrontOutput(const AnfNodePtr &front_
                                                         std::set<AnfNodePtr> *switch_nodes,
                                                         std::set<KernelWithIndex> *results) {
   if (front_output->isa<ValueNode>()) {
-    (*results).insert({front_output, 0});
+    (*results).emplace(front_output, 0);
 
     const auto &iter = formal_to_real_parameters_.find(front_output);
     if (iter != formal_to_real_parameters_.end()) {
       for (const auto &node : iter->second) {
-        (*results).insert(node);
+        (*results).emplace(node);
       }
     }
   } else if (front_output->isa<Parameter>()) {
@@ -1370,7 +1366,7 @@ void ControlNodeParser::FetchBackendOutputByFrontOutput(const AnfNodePtr &front_
 
     if (iter != formal_to_real_parameters_.end()) {
       for (const auto &node : iter->second) {
-        (*results).insert(node);
+        (*results).emplace(node);
       }
     } else {
       MS_LOG(EXCEPTION) << "Cannot find backend node for front parameter:" << AnfAlgo::GetNodeDebugString(front_output);
@@ -1402,7 +1398,7 @@ void ControlNodeParser::FetchBackendOutputByFrontOutput(const AnfNodePtr &front_
     const auto iter = front_to_backend_kernels_.find(AnfAlgo::VisitKernelWithReturnType(front_output, 0));
 
     if (iter != front_to_backend_kernels_.end()) {
-      (*results).insert(iter->second.first);
+      (*results).emplace(iter->second.first);
     } else {
       MS_LOG(EXCEPTION) << "Cannot find backend node for front kernel:" << AnfAlgo::GetNodeDebugString(front_output);
     }
@@ -1429,7 +1425,7 @@ void ControlNodeParser::FetchBackendInputNodebyFrontNode(
           MS_LOG(WARNING) << "Cannot find backend node of node:" << AnfAlgo::GetNodeDebugString(node_with_index.first);
           continue;
         }
-        formal_to_real_parameters_[formal_parameter].push_back({iter->second.first, 0});
+        formal_to_real_parameters_[formal_parameter].emplace_back(iter->second.first, 0);
       } else {
         const auto iter = front_to_backend_kernels_.find(node_with_index);
         if (iter == front_to_backend_kernels_.end()) {
@@ -1439,7 +1435,7 @@ void ControlNodeParser::FetchBackendInputNodebyFrontNode(
       }
     }
   } else if (real_parameter->isa<ValueNode>()) {
-    formal_to_real_parameters_[formal_parameter].push_back({real_parameter, 0});
+    formal_to_real_parameters_[formal_parameter].emplace_back(real_parameter, 0);
   } else if (IsCallNode(real_parameter)) {
     const auto func_graphs = FetchFuncGraphbyCallNode(real_parameter);
     for (const auto func_graph : func_graphs) {
@@ -1512,7 +1508,7 @@ void ControlNodeParser::FetchBackendInputNode(const std::vector<KernelGraphPtr>
       auto front_node = graph->GetFrontAnfByBackendAnf(value_node);
 
       if (front_node != nullptr) {
-        formal_to_real_parameters_[front_node].push_back({value_node, 0});
+        formal_to_real_parameters_[front_node].emplace_back(value_node, 0);
       }
     }
   }
@@ -1521,7 +1517,7 @@ void ControlNodeParser::FetchBackendInputNode(const std::vector<KernelGraphPtr>
     for (const auto &front_weight : host_parameter_to_weight.second) {
       const auto &iter = front_to_backend_parameters_.find(host_parameter_to_weight.first);
       if (iter != front_to_backend_parameters_.end()) {
-        formal_to_real_parameters_[front_weight].push_back({iter->second.first, 0});
+        formal_to_real_parameters_[front_weight].emplace_back(iter->second.first, 0);
       }
     }
   }
@@ -1552,10 +1548,10 @@ void ControlNodeParser::FetchBackendInputNode(const std::vector<KernelGraphPtr>
     }
   }
   for (const auto parameter_pair : front_to_backend_parameters) {
-    formal_to_real_parameters_[parameter_pair.first].push_back({parameter_pair.second.first, 0});
+    formal_to_real_parameters_[parameter_pair.first].emplace_back(parameter_pair.second.first, 0);
   }
   for (const auto parameter_pair : front_to_backend_parameters_) {
-    formal_to_real_parameters_[parameter_pair.first].push_back({parameter_pair.second.first, 0});
+    formal_to_real_parameters_[parameter_pair.first].emplace_back(parameter_pair.second.first, 0);
   }
 }
 
diff --git a/mindspore/ccsrc/runtime/framework/control_node_parser.h b/mindspore/ccsrc/runtime/framework/control_node_parser.h
index 01ef69e501f..51d06a3f29d 100644
--- a/mindspore/ccsrc/runtime/framework/control_node_parser.h
+++ b/mindspore/ccsrc/runtime/framework/control_node_parser.h
@@ -150,7 +150,6 @@ class ControlNodeParser {
   // 2. The parameter from control nodes.
   void FetchFrontToBackendParameter(const std::vector<KernelGraphPtr> &graphs,
                                     const std::vector<DeviceContext *> &device_contexts,
-                                    const std::vector<AnfNodePtr> &control_nodes,
                                     const RealToFormalNode &real_to_formal_front_parameters,
                                     const RealToFormalNode &formal_to_real_front_parameters);
   // Get the relationship between the front and backend of the executable kernel in all kernel graphs.
diff --git a/mindspore/ccsrc/runtime/framework/graph_scheduler.cc b/mindspore/ccsrc/runtime/framework/graph_scheduler.cc
index c7106511a57..240f7008f45 100644
--- a/mindspore/ccsrc/runtime/framework/graph_scheduler.cc
+++ b/mindspore/ccsrc/runtime/framework/graph_scheduler.cc
@@ -1262,7 +1262,7 @@ std::vector<GatherActorPtr> GraphScheduler::BuildGatherActor(const GraphCompiler
         if (HasAbstractMonad(parameter) || HasAbstractRef(parameter)) {
           continue;
         }
-        parameters.push_back({parameter, 0});
+        parameters.emplace_back(parameter, 0);
       }
 
       const auto branch_id = parser->GetBranchIDByFuncGraph(func_graph);
@@ -1291,7 +1291,7 @@ std::vector<GatherActorPtr> GraphScheduler::BuildGatherActor(const GraphCompiler
         if (HasAbstractMonad(inputs[i]) || (inputs[i]->isa<Parameter>() && HasAbstractRef(inputs[i]))) {
           continue;
         }
-        parameters.push_back({inputs[i], 0});
+        parameters.emplace_back(inputs[i], 0);
       }
 
       auto func_graph = control_node->func_graph();
@@ -1335,7 +1335,7 @@ void GraphScheduler::LinkDataArrow(KernelActor *to_actor, const GraphCompilerInf
   if (from_kernel->isa<Parameter>() && graph_compiler_info.control_node_parser_->IsCallInputKernelGraph(graph)) {
     const auto &kernel_with_index = GetFrontNodeByKernelGraph(from_kernel, graph);
     const auto &real_front_node_with_index =
-      AnfAlgo::VisitKernelWithReturnType(kernel_with_index.first, kernel_with_index.second);
+      AnfAlgo::VisitKernelWithReturnType(kernel_with_index.first, SizeToInt(kernel_with_index.second));
     if (HasAbstractRef(real_front_node_with_index.first)) {
       to_actor->device_tensor_store_keys_.emplace_back(to_kernel_with_input_idx.second,
                                                        real_front_node_with_index.first.get());
@@ -1966,6 +1966,7 @@ void GraphScheduler::LinkOutputResultArrowForSwitchActor(const GraphCompilerInfo
         auto actor = FetchActor(actor_name);
         MS_EXCEPTION_IF_NULL(actor);
         auto switch_actor = dynamic_cast<SwitchActor *>(actor);
+        MS_EXCEPTION_IF_NULL(switch_actor);
 
         // Set branch index into switch actor.
         size_t branch_index = switch_actor->branch_id_to_index_.size();
@@ -2071,7 +2072,6 @@ void GraphScheduler::LinkDeviceTensorStoreForAutoMonadActor(const std::vector<Ke
 void GraphScheduler::PrepareInputNodeForSwitchActor(const std::vector<AnfNodePtr> &control_nodes) {
   for (const auto &node : control_nodes) {
     CNodePtr cnode = node->cast<CNodePtr>();
-    const auto &from_func_graph = node->func_graph();
     auto inputs = cnode->inputs();
 
     // Before link data arrow, parameters of the call node in switch-call need to be add to the switch actor.
@@ -2079,6 +2079,8 @@ void GraphScheduler::PrepareInputNodeForSwitchActor(const std::vector<AnfNodePtr
       auto actor = FetchActor(inputs[0]->DebugString());
       MS_EXCEPTION_IF_NULL(actor);
       auto switch_actor = dynamic_cast<SwitchActor *>(actor);
+      MS_EXCEPTION_IF_NULL(switch_actor);
+
       for (size_t i = kCallInputStartPos; i < inputs.size(); ++i) {
         if (HasAbstractMonad(inputs[i])) {
           continue;
@@ -2107,6 +2109,7 @@ void GraphScheduler::LinkArrowByControlNode(const GraphCompilerInfo &graph_compi
       auto actor = FetchActor(actor_name);
       MS_EXCEPTION_IF_NULL(actor);
       auto gather_actor = dynamic_cast<GatherActor *>(actor);
+      MS_EXCEPTION_IF_NULL(gather_actor);
 
       const auto &func_graph = GetValueNode<FuncGraphPtr>(inputs[0]);
       MS_EXCEPTION_IF_NULL(func_graph);
@@ -2123,8 +2126,8 @@ void GraphScheduler::LinkArrowByControlNode(const GraphCompilerInfo &graph_compi
             continue;
           }
 
-          gather_actor->device_tensor_store_keys_.push_back(
-            {i - kCallInputStartPos - persist_input_num, inputs[i].get()});
+          gather_actor->device_tensor_store_keys_.emplace_back(i - kCallInputStartPos - persist_input_num,
+                                                               inputs[i].get());
           gather_actor->device_contexts_[i - kCallInputStartPos - persist_input_num] =
             graph_compiler_info.control_node_parser_->GetFrontValueNodeDeviceContext(inputs[i]);
         } else if ((inputs[i]->isa<Parameter>() && HasAbstractRef(inputs[i]->cast<ParameterPtr>())) ||
@@ -2150,7 +2153,9 @@ void GraphScheduler::LinkArrowByControlNode(const GraphCompilerInfo &graph_compi
     MS_EXCEPTION_IF_NULL(func_graph);
     auto actor = FetchActor(func_graph->get_return()->DebugString());
     MS_EXCEPTION_IF_NULL(actor);
-    LinkDataArrowForSwitchActor(graph_compiler_info, dynamic_cast<SwitchActor *>(actor));
+    auto switch_actor = dynamic_cast<SwitchActor *>(actor);
+    MS_EXCEPTION_IF_NULL(switch_actor);
+    LinkDataArrowForSwitchActor(graph_compiler_info, switch_actor);
   }
 
   // Link arrow for gather actor for call input kernel graph.
@@ -2160,6 +2165,7 @@ void GraphScheduler::LinkArrowByControlNode(const GraphCompilerInfo &graph_compi
     auto actor = FetchActor(kernel_graph->ToString());
     MS_EXCEPTION_IF_NULL(actor);
     auto gather_actor = dynamic_cast<GatherActor *>(actor);
+    MS_EXCEPTION_IF_NULL(gather_actor);
 
     for (size_t i = 0; i < gather_actor->data_nodes_.size(); ++i) {
       const auto &input_with_index = gather_actor->data_nodes_[i];
@@ -2286,8 +2292,10 @@ void GraphScheduler::LinkDataArrowByControlNode(const GraphCompilerInfo &graph_c
       const auto &actor_name = backend_node.first->fullname_with_scope();
       const auto &actor = FetchActor(actor_name);
       MS_EXCEPTION_IF_NULL(actor);
-      auto op_arrow = std::make_shared<DataArrow>(backend_node.second, to_actor->GetAID(), to_index);
       auto from_actor = dynamic_cast<KernelActor *>(actor);
+      MS_EXCEPTION_IF_NULL(from_actor);
+
+      auto op_arrow = std::make_shared<DataArrow>(backend_node.second, to_actor->GetAID(), to_index);
       from_actor->output_data_arrows_.emplace_back(op_arrow);
       auto device_tensor = AnfAlgo::GetMutableOutputAddr(from_actor->kernel_, backend_node.second, false);
       UpdateRefCount(device_tensor.get(), true);
@@ -2416,6 +2424,8 @@ void GraphScheduler::LinkControlArrowForGatherActor(std::vector<KernelActorPtr>
           actor = FetchActor(func_graph->get_return()->DebugString());
           if (actor != nullptr) {
             auto switch_actor = dynamic_cast<SwitchActor *>(actor);
+            MS_EXCEPTION_IF_NULL(switch_actor);
+
             kernel_actor->output_control_arrows_.emplace_back(switch_actor->GetAID());
             switch_actor->input_controls_num_++;
           }
@@ -2458,6 +2468,7 @@ void GraphScheduler::LinkControlArrowForSwitchActor(std::vector<SwitchActorPtr>
         auto actor = FetchActor(actor_name);
         MS_EXCEPTION_IF_NULL(actor);
         auto gather_actor = dynamic_cast<GatherActor *>(actor);
+        MS_EXCEPTION_IF_NULL(gather_actor);
         gather_actor->output_control_arrows_.emplace_back(switch_actor->GetAID());
         switch_actor->input_controls_num_++;
       }
@@ -2470,6 +2481,7 @@ void GraphScheduler::LinkControlArrowForSwitchActor(std::vector<SwitchActorPtr>
         const auto &actor = FetchActor(actor_name);
         if (actor != nullptr) {
           const auto &gather_actor = dynamic_cast<GatherActor *>(actor);
+          MS_EXCEPTION_IF_NULL(gather_actor);
           switch_actor->output_branch_control_arrows_[i].emplace_back(gather_actor->GetAID());
           gather_actor->input_controls_num_++;
         }
@@ -2495,6 +2507,7 @@ void GraphScheduler::LinkControlArrowForSwitchActor(std::vector<SwitchActorPtr>
       auto actor = FetchActor(actor_name);
       MS_EXCEPTION_IF_NULL(actor);
       auto switch_actor = dynamic_cast<SwitchActor *>(actor);
+      MS_EXCEPTION_IF_NULL(switch_actor);
 
       size_t branch_index = switch_actor->branch_id_to_index_.size();
       if (switch_actor->branch_id_to_index_.find(kMainBranchID) != switch_actor->branch_id_to_index_.end()) {
@@ -2517,6 +2530,8 @@ void GraphScheduler::LinkBranchArrowForSwitchActor(const GraphCompilerInfo &grap
       auto actor = FetchActor(actor_name);
       MS_EXCEPTION_IF_NULL(actor);
       auto switch_actor = dynamic_cast<SwitchActor *>(actor);
+      MS_EXCEPTION_IF_NULL(switch_actor);
+
       for (size_t i = 0; i < switch_actor->branch_func_graph_.size(); ++i) {
         const auto &func_graph = switch_actor->branch_func_graph_[i];
         if (func_graph == nullptr) {
@@ -2556,6 +2571,7 @@ void GraphScheduler::LinkBranchArrowForGatherActor(const GraphCompilerInfo &grap
     auto actor = FetchActor(actor_name);
     MS_EXCEPTION_IF_NULL(actor);
     auto gather_actor = dynamic_cast<GatherActor *>(actor);
+    MS_EXCEPTION_IF_NULL(gather_actor);
     gather_actor->output_branch_arrows_.emplace_back(gather_actor->switch_aid_);
   }
 }