Update the threshold while generating optimized model file. Previousl…

…y, it creates empty file is no initialize exceeds the threshold.

onnxruntime/test/python/onnxruntime_test_python.py

@@ -183,7 +183,7 @@ def test_model_serialization_with_original_external_initializers_to_directory(se
             so.add_session_config_entry(
                 "session.optimized_model_external_initializers_file_name", external_initializers_file
             )
-            so.add_session_config_entry("session.optimized_model_external_initializers_min_size_in_bytes", "100")
+            so.add_session_config_entry("session.optimized_model_external_initializers_min_size_in_bytes", "20")
             onnxrt.InferenceSession(get_name("model_with_orig_ext_data.onnx"), sess_options=so)
             self.assertTrue(os.path.isfile(so.optimized_model_filepath))
             self.assertTrue(os.path.isfile(os.path.join(directory, external_initializers_file)))
@@ -213,14 +213,10 @@ def test_model_serialization_with_original_external_initializers_to_current_dire
             "session.optimized_model_external_initializers_file_name", external_initializers_file
         )
 
-        # TODO(anyone): Set this to 100 will cause test error since some tensor below the threshold
-        # still refers to the original external data file. We shall fix this issue so that the
-        # optimized model only refers to one external data file.
-        so.add_session_config_entry("session.optimized_model_external_initializers_min_size_in_bytes", "10")
+        so.add_session_config_entry("session.optimized_model_external_initializers_min_size_in_bytes", "100")
         session1 = onnxrt.InferenceSession(get_name("model_with_orig_ext_data.onnx"), sess_options=so)
         del session1
         self.assertTrue(os.path.isfile(optimized_model_filepath))
-        self.assertTrue(os.path.isfile(external_initializers_file))
 
         so2 = onnxrt.SessionOptions()
         so2.log_severity_level = 1