Changed smoothing in tqdm to decrease variability of time remaining between training / eval (#1194)

Author: pertschuk

pytorch_lightning/trainer/trainer.py

@@ -909,7 +909,7 @@ def run_pretrain_routine(self, model: LightningModule):
         # init progress bar
         pbar = tqdm(leave=True, position=2 * self.process_position,
                     disable=not self.show_progress_bar, dynamic_ncols=True,
-                    file=sys.stdout)
+                    file=sys.stdout, smoothing=0)
         self.main_progress_bar = pbar
 
         # clear cache before training