Update the comments of calculate_numeric_gap (#13389)

Summary:

This diff updates the comments and add ET_Log to highlight the source of AOT intermediate output the calculate_numeric_gap function will use.

Reviewed By: kimishpatel

Differential Revision: D80210646

Author: Gasoonjia

devtools/inspector/_inspector.py

@@ -1170,14 +1170,18 @@ def _get_aot_intermediate_outputs_and_op_names(
 
         export_program = None
 
-        # Will use the exported program to extract intermediate output if and only if exported_program has been provided, and it is the greatest ancestor of the edge_dialect_program
+        # Will use the exported program to extract intermediate output if and only if exported_program has been provided, and it is one of the ancestors of the edge_dialect_program
         if self._etrecord.exported_program and propagate_back_debug_handle(
             self._etrecord.exported_program,
             self._etrecord.export_graph_id,
             self._etrecord.edge_dialect_program,
         ):
             export_program = self._etrecord.exported_program
         else:
+            log.warning(
+                "Either aten dialect exported program is not in ETRecord, or it is not one of the ancestors of current edge dialect program."
+                "Will fall back to use edge dialect program to extract intermediate output",
+            )
             export_program = self._etrecord.edge_dialect_program
         graph_module = export_program.module()
         aot_debug_handle_to_op_name = get_aot_debug_handle_to_op_name_mapping(
@@ -1392,7 +1396,9 @@ def calculate_numeric_gap(self, distance: str = "MSE"):
         """
         Compares logged intermediate outputs from the exported graph (in ETRecord)
         with runtime outputs (in ETDump) using a user-specific numerical comparator.
-        To use this function, you must first generate the ETRecord using the `bundle_program`,
+        If the exported graph is not supported, the function will fall back to use edge dialect graph.
+
+        To use this function, you must first generate the ETRecord with representative inputs,
         and then create the Inspector instance with the ETRecord and ETDump. The Inspector can then
         compare the intermediate outputs from the AOT and the runtime.