refix disp_dict when distributed (#700)

Author: jihanyang

tools/train_utils/train_utils.py

@@ -61,19 +61,16 @@ def train_one_epoch(model, optimizer, train_loader, model_func, lr_scheduler, ac
         avg_forward_time = commu_utils.average_reduce_value(cur_forward_time)
         avg_batch_time = commu_utils.average_reduce_value(cur_batch_time)
 
+        # log to console and tensorboard
         if rank == 0:
             data_time.update(avg_data_time)
             forward_time.update(avg_forward_time)
             batch_time.update(avg_batch_time)
+            disp_dict.update({
+                'loss': loss.item(), 'lr': cur_lr, 'd_time': f'{data_time.val:.2f}({data_time.avg:.2f})',
+                'f_time': f'{forward_time.val:.2f}({forward_time.avg:.2f})', 'b_time': f'{batch_time.val:.2f}({batch_time.avg:.2f})'
+            })
 
-
-        disp_dict.update({
-            'loss': loss.item(), 'lr': cur_lr, 'd_time': f'{data_time.val:.2f}({data_time.avg:.2f})',
-            'f_time': f'{forward_time.val:.2f}({forward_time.avg:.2f})', 'b_time': f'{batch_time.val:.2f}({batch_time.avg:.2f})'
-        })
-
-        # log to console and tensorboard
-        if rank == 0:
             pbar.update()
             pbar.set_postfix(dict(total_it=accumulated_iter))
             tbar.set_postfix(disp_dict)