From 395d3f0848a64b2a249c0de183e219ab1a90896d Mon Sep 17 00:00:00 2001
From: lichenever <lichen79@huawei.com>
Date: Thu, 24 Sep 2020 14:28:15 +0800
Subject: [PATCH] add_limit_for_allreduce_fusion

---
 mindspore/parallel/_auto_parallel_context.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/mindspore/parallel/_auto_parallel_context.py b/mindspore/parallel/_auto_parallel_context.py
index 6efa65815b..91e3189d2e 100644
--- a/mindspore/parallel/_auto_parallel_context.py
+++ b/mindspore/parallel/_auto_parallel_context.py
@@ -274,6 +274,9 @@ class _AutoParallelContext:
             TypeError: If group is not a python str.
         """
         self.check_context_handle()
+        if not indices:
+            raise ValueError('indices can not be empty')
+
         if isinstance(indices, (list)):
             for index in indices:
                 if not isinstance(index, int):