report error when user forget setting environment variable EXPERIMENTAL_DYNAMIC_PARTITION in dynmaic shape scene

ge/graph/build/graph_builder.cc

@@ -200,6 +200,12 @@ Status GraphBuilder::Build(ComputeGraphPtr &comp_graph, std::vector<SubGraphInfo
   GeModelPtr ge_model_ptr = nullptr;
 
   if (comp_graph->GetGraphUnknownFlag()) {
+    if (std::getenv("EXPERIMENTAL_DYNAMIC_PARTITION") == nullptr) {
+      GELOGE(FAILED, "Environment variable EXPERIMENTAL_DYNAMIC_PARTITION is missing, which is "
+             "required by current dynamic model[%s], please retry with environment variable "
+             "\"export EXPERIMENTAL_DYNAMIC_PARTITION=1\"", comp_graph->GetName().c_str());
+      return FAILED;
+    }
     GE_CHK_STATUS_RET(
         BuildForDynamicShapeGraph(comp_graph, subgraph_ptr_list, ge_root_model_ptr, ge_model_ptr, session_id),
         "Build for dynamic shape graph failed.");