diff --git a/python/paddle/fluid/tests/unittests/parallel_executor_test_base.py b/python/paddle/fluid/tests/unittests/parallel_executor_test_base.py
index ef4779f0e6f2df2f0b79f776d1e7b6c5cbf31a22..ec6b81f138321f2119a5a5aaf4b5ba9ae8f7e69b 100644
--- a/python/paddle/fluid/tests/unittests/parallel_executor_test_base.py
+++ b/python/paddle/fluid/tests/unittests/parallel_executor_test_base.py
@@ -34,7 +34,7 @@ class TestParallelExecutorBase(unittest.TestCase):
     def check_network_convergence(cls,
                                   method,
                                   use_cuda=True,
-                                  iter=50,
+                                  iter=5,
                                   batch_size=None,
                                   feed_dict=None,
                                   feed_data_reader=None,
diff --git a/python/paddle/fluid/tests/unittests/seresnext_net.py b/python/paddle/fluid/tests/unittests/seresnext_net.py
index 17e0cd0d5b18652f828af9936b07cb4122f87b97..188957278684c514d791677d895f5616c7451b92 100644
--- a/python/paddle/fluid/tests/unittests/seresnext_net.py
+++ b/python/paddle/fluid/tests/unittests/seresnext_net.py
@@ -179,7 +179,7 @@ def batch_size(use_cuda):
 def iter(use_cuda):
     if use_cuda:
         return 10
-    return 2
+    return 1
 
 
 gpu_img, gpu_label = init_data(