From bda2cff34eca1ee328054e631c0e170ede659a36 Mon Sep 17 00:00:00 2001
From: tangwei12 <tangwei12@baidu.com>
Date: Thu, 9 Apr 2020 10:26:00 +0800
Subject: [PATCH] fix bug at sync with communicator (#23077) (#23659)

---
 python/paddle/fluid/transpiler/distribute_transpiler.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/python/paddle/fluid/transpiler/distribute_transpiler.py b/python/paddle/fluid/transpiler/distribute_transpiler.py
index 27a74ceb5fc..11729940e16 100644
--- a/python/paddle/fluid/transpiler/distribute_transpiler.py
+++ b/python/paddle/fluid/transpiler/distribute_transpiler.py
@@ -730,7 +730,7 @@ WIKI: https://github.com/PaddlePaddle/Fleet/blob/develop/markdown_doc/transpiler
                 ]
                 sections = self._get_splited_var_sections(splited_vars)
 
-                if self.config.completely_not_async:
+                if self.config.completely_not_async and self.trainer_num > 1:
                     send_varnames = [
                         "{}.trainer_{}".format(var.name, self.trainer_id)
                         for var in splited_vars
-- 
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