Fix 'tuple' object has no attribute 'to_dict' for bert

Author: ahsan-ca

Diff for: quantization/nlp/bert/migraphx/e2e_migraphx_bert_example.py

@@ -553,8 +553,19 @@ def output_run_config(flags, samples):
         for k, v in compute_range.data.items():
             json_compute_range[k] = (float(v.range_value[0]), float(v.range_value[1]))
 
-
-        write_calibration_table(json_compute_range)
+        print("Writing calibration table")
+        try:
+            write_calibration_table(json_compute_range)
+        except AttributeError as e:
+            calibration_table = {}
+            for k, v in compute_range.data.items():
+                min_val = float(v.range_value[0]) if hasattr(v.range_value[0], 'item') else float(v.range_value[0])
+                max_val = float(v.range_value[1]) if hasattr(v.range_value[1], 'item') else float(v.range_value[1])
+                calibration_table[k] = [min_val, max_val]
+
+            print("Writing calibration.json file without using write_calibration_table")
+            with open("calibration.json", "w") as f:
+                json.dump(calibration_table, f)
         print("Calibration is done. Calibration cache is saved to calibration.json")
 
         model_quants = model_quants + "_int8"