fix ListenAndServ op

7 years ago · 98a2179f80
parent 08fbab9429
commit 98a2179f80
1 changed files with 1 additions and 1 deletions
--- a/python/paddle/fluid/layers/io.py
+++ b/python/paddle/fluid/layers/io.py
@ -170,7 +170,7 @@ class ListenAndServ(object):
                'OptimizeBlock': current_block,
                'PrefetchBlock': empty_block,
                'sync_mode': True,  # did not support async now in layers
-                'grad_to_block_id': []
+                'grad_to_block_id': [""]
            })