[SW-194200] Save scale file only with new scales

Change-Id: I14a4ef94d188b13c2fbf4ea77d2b42cb5bd6d952

neural_compressor/torch/algorithms/fp8_quant/_core/scale.py

@@ -103,6 +103,7 @@ def get_config(
         )
         scales = convert_scales_to_tensors_dict(scales_obj, scales_file_format, params["hp_dtype"])
         model_dict = dict(model.named_modules())
+        save_file = False
         for mname in mod_list:
             mod = model_dict[mname]
             set_hqt_config(mod, top_level_config)  # set config in the module, as it consumed by the patched module
@@ -123,6 +124,7 @@ def get_config(
                     scales_obj[mname] = ModuleConfig(
                         **format_functions_rec((torch.Tensor, scales_file_format))(scales[mname].__dict__)
                     )
+                    save_file = True
 
             logger.debug(
                 "Preparing quantization functions for layer %s layer_type=%s",
@@ -138,7 +140,7 @@ def get_config(
                 params,
             )
             qconfig[mname] = mod_extra_config
-        if scales_file is not None:
+        if save_file and scales_file is not None:
             save_scales(model, scales_obj, scales_file_format, scales_file + ".npz")
             save_scales(model, scales_obj, scales_file_format, scales_file + ".json")
     return qconfig