!1249 fix bug that all subgraph is unknown and netoutput format is not nd bug

From: @wan_xuelei
Reviewed-by: @xchu42,@xchu42,@wqtshg
Signed-off-by: @wqtshg

ge/graph/load/model_manager/model_manager.cc

@@ -297,10 +297,11 @@ Status ModelManager::LoadModelOnline(uint32_t &model_id, const shared_ptr<ge::Ge
   if (model_id == INVALID_MODEL_ID) {
     GenModelId(&model_id);
   }
-
+  auto name_to_model = ge_root_model->GetSubgraphInstanceNameToModel();
   string model_name = "";
   bool is_shape_unknown = ge_root_model->GetRootGraph()->GetGraphUnknownFlag();
-  if (is_shape_unknown || GetContext().GetHostExecFlag()) {
+  // if multi subgraph is known, do hybrid load process
+  if (is_shape_unknown || GetContext().GetHostExecFlag() || (name_to_model.size() > 1)) {
     return DoLoadHybridModelOnline(model_id, model_name, ge_root_model, listener);
   }
 
@@ -322,7 +323,6 @@ Status ModelManager::LoadModelOnline(uint32_t &model_id, const shared_ptr<ge::Ge
   auto root_graph = ge_root_model->GetRootGraph();
   GE_CHECK_NOTNULL(root_graph);
   string root_model_name = root_graph->GetName();
-  auto name_to_model = ge_root_model->GetSubgraphInstanceNameToModel();
   GeModelPtr ge_model = name_to_model[root_model_name];
   Status ret = SUCCESS;
   do {

ge/graph/passes/net_output_pass.cc

@@ -555,6 +555,8 @@ void NetOutputPass::AddInOutForNetOutputOp(const ComputeGraphPtr &graph, OpDescP
       return;
     }
     ge::GeTensorDesc out_desc = src_node->GetOpDesc()->GetOutputDesc(src_index);
+    out_desc.SetFormat(FORMAT_ND);
+    out_desc.SetOriginFormat(FORMAT_ND);
     GE_IF_BOOL_EXEC(net_output_desc->AddInputDesc(out_desc) != SUCCESS, GELOGW("add input desc failed"); return );
     is_input_const.push_back(PassUtils::IsConstant(src_node));
     ++iter;