add conv3d_trans_cudnn_op unit test

paddle/operators/conv_transpose_cudnn_op.cc

@@ -23,7 +23,24 @@ class CudnnConv2DTransposeOpMaker : public Conv2DTransposeOpMaker {
                               framework::OpAttrChecker* op_checker)
       : Conv2DTransposeOpMaker(proto, op_checker) {
     AddAttr<std::vector<int>>("dilations", "dilations of convolution operator.")
-        .SetDefault(std::vector<int>{1, 1});
+        .SetDefault({1, 1});
+    AddAttr<int>("workspace_size_MB",
+                 "workspace size for cudnn, in MB, "
+                 "workspace is a section of GPU memory which will be "
+                 "allocated/freed each time the operator runs, larger "
+                 "workspace size can increase performance but also requires "
+                 "better hardward. This size should be carefully setted.")
+        .SetDefault(4096);
+  }
+};
+
+class CudnnConv3DTransposeOpMaker : public Conv3DTransposeOpMaker {
+ public:
+  CudnnConv3DTransposeOpMaker(framework::OpProto* proto,
+                              framework::OpAttrChecker* op_checker)
+      : Conv3DTransposeOpMaker(proto, op_checker) {
+    AddAttr<std::vector<int>>("dilations", "dilations of convolution operator.")
+        .SetDefault({1, 1, 1});
     AddAttr<int>("workspace_size_MB",
                  "workspace size for cudnn, in MB, "
                  "workspace is a section of GPU memory which will be "

python/paddle/v2/framework/tests/test_conv3d_transpose_op.py

@@ -93,5 +93,11 @@ class TestConv3dTransposeOp(OpTest):
         self.op_type = "conv3d_transpose"
 
 
+# ------------ test_cudnn ------------
+class TestCudnn(TestConv3dTransposeOp):
+    def init_op_type(self):
+        self.op_type = "conv3d_transpose_cudnn"
+
+
 if __name__ == '__main__':
     unittest.main()