!1412 Bugfix: fix null owner graph error

From: @lichun30
Reviewed-by: @xchu42,@ji_chen
Signed-off-by: @ji_chen

ge/hybrid/model/hybrid_model.h

@@ -135,6 +135,7 @@ class HybridModel {
   std::string model_name_;
   GeRootModelPtr ge_root_model_;
   std::map<uint32_t, NodeItem *> input_nodes_;
+  ComputeGraphPtr root_graph_;
   std::map<std::string, NodePtr> device_variable_nodes_; //lint !e148
   std::map<std::string, NodePtr> host_variable_nodes_; //lint !e148
   std::map<std::string, std::unique_ptr<TensorValue>> variable_tensors_;

ge/hybrid/model/hybrid_model_builder.cc

@@ -764,7 +764,7 @@ Status HybridModelBuilder::LoadGraph() {
            root_graph->GetAllNodesSize());
   }
 
-  root_graph_ = root_graph;
+  hybrid_model_.root_graph_ = root_graph;
   // Reset node id by topological order across all subgraphs
   int64_t index = 0;
   for (const auto &node : root_graph->GetAllNodes()) {
@@ -2058,7 +2058,7 @@ Status HybridModelBuilder::CollectParallelGroups(NodeItem *node_item) {
       GELOGD("[%s] Start to get parallel group from subgraph: %s",
              node_item->NodeName().c_str(),
              subgraph_name.c_str());
-      auto subgraph = root_graph_->GetSubgraph(subgraph_name);
+      auto subgraph = hybrid_model_.root_graph_->GetSubgraph(subgraph_name);
       GE_CHECK_NOTNULL(subgraph);
       for (const auto &sub_node : subgraph->GetAllNodes()) {
         std::string parallel_group;

ge/hybrid/model/hybrid_model_builder.h

@@ -100,7 +100,6 @@ class HybridModelBuilder {
   NodeItem *MutableNodeItem(const NodePtr &node);
 
   GeRootModelPtr ge_root_model_;
-  ComputeGraphPtr root_graph_;
   std::map<std::string, GeModelPtr> subgraph_models_;
   std::map<std::string, NodePtr> constant_op_nodes_;
   std::map<std::string, std::set<NodeItem *>> parallel_group_to_nodes_;

metadef

@@ -1 +1 @@
-Subproject commit 86781b7e8ce21d2b901406cc3619d6bea2aeb18e
+Subproject commit 4ff5e3987f2e5d2980019defacaf0891861c84fc

tests/ut/ge/hybrid/ge_hybrid_unittest.cc

@@ -276,9 +276,9 @@ TEST_F(UtestGeHybrid, test_parse_parallel_group) {
   op_desc->SetOpKernelLibName("ops_kernel_info_hccl");
   GeRootModelPtr root_model = MakeShared<ge::GeRootModel>(compute_graph);
   HybridModel model(root_model);
+  model.root_graph_ = compute_graph;
 
   HybridModelBuilder builder(model);
-  builder.root_graph_ = compute_graph;
   ASSERT_EQ(builder.CollectParallelGroups(node_item.get()), SUCCESS);
 
   ASSERT_EQ(builder.node_to_parallel_groups_.size(), 1);