diff --git a/paddle/gserver/tests/img_conv_cudnn.py b/paddle/gserver/tests/img_conv_cudnn.py
new file mode 100644
index 0000000000000000000000000000000000000000..3934607fa41f9b6d401f1c9ff4aec6715786799b
--- /dev/null
+++ b/paddle/gserver/tests/img_conv_cudnn.py
@@ -0,0 +1,32 @@
+#edit-mode: -*- python -*-
+# Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserved
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+from paddle.trainer_config_helpers import *
+
+settings(batch_size=10)
+data = data_layer(name="input", size=8 * 16 * 16)
+conv = img_conv_layer(
+    input=data,
+    filter_size=1,
+    filter_size_y=1,
+    num_channels=8,
+    num_filters=16,
+    stride=1,
+    bias_attr=True,
+    act=LinearActivation(),
+    groups=2,
+    layer_type="cudnn_conv")
+
+outputs(conv)
diff --git a/paddle/gserver/tests/img_conv_exconv.py b/paddle/gserver/tests/img_conv_exconv.py
new file mode 100644
index 0000000000000000000000000000000000000000..ad5a8ba2bde17000ca3d7057c6f399ae28d938b0
--- /dev/null
+++ b/paddle/gserver/tests/img_conv_exconv.py
@@ -0,0 +1,32 @@
+#edit-mode: -*- python -*-
+# Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserved
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+from paddle.trainer_config_helpers import *
+
+settings(batch_size=10)
+data = data_layer(name="input", size=8 * 16 * 16)
+conv = img_conv_layer(
+    input=data,
+    filter_size=1,
+    filter_size_y=1,
+    num_channels=8,
+    num_filters=16,
+    stride=1,
+    bias_attr=True,
+    act=LinearActivation(),
+    groups=2,
+    layer_type="exconv")
+
+outputs(conv)
diff --git a/paddle/gserver/tests/test_NetworkCompare.cpp b/paddle/gserver/tests/test_NetworkCompare.cpp
index ff1c195cee60b6b2773f1059c0c3fb41a36c609d..698a972b62b95cdb83c0226d7a026c9ce4ef2525 100644
--- a/paddle/gserver/tests/test_NetworkCompare.cpp
+++ b/paddle/gserver/tests/test_NetworkCompare.cpp
@@ -258,15 +258,12 @@ TEST(Compare, img_conv) {
 
 // Test cudnn_conv and exconv give the same result
 TEST(Compare, img_conv2) {
-  std::string config_file_a = "./gserver/tests/img_conv_a.conf";
-  std::string config_file_b = "./gserver/tests/img_conv_c.conf";
+  std::string config_file_a = "./gserver/tests/img_conv_cudnn.py";
+  std::string config_file_b = "./gserver/tests/img_conv_exconv.py";
   bool useGpu = FLAGS_use_gpu;
-  double eps = FLAGS_checkgrad_eps;
   FLAGS_use_gpu = true;
-  FLAGS_checkgrad_eps = 1e-3;
   compareNetwork(config_file_a, config_file_b);
   FLAGS_use_gpu = useGpu;
-  FLAGS_checkgrad_eps = eps;
 }
 #endif