diff --git a/paddle/CMakeLists.txt b/paddle/CMakeLists.txt
index 6653244507742b33d9524a7a0e4a5b2b575d358a..6b665a9effba4bef083d007c0c74f2f4c79e647e 100644
--- a/paddle/CMakeLists.txt
+++ b/paddle/CMakeLists.txt
@@ -24,6 +24,7 @@ if(NOT WITH_FLUID_ONLY)
 endif()
 
 add_subdirectory(testing)
+set(PYTHON_TESTS_DIR ${PADDLE_BINARY_DIR}/python/paddle/fluid/tests CACHE INTERNAL "python tests directory")
 if(NOT MOBILE_INFERENCE AND NOT RPI AND NOT WITH_C_API)
   add_subdirectory(fluid)
 endif()
diff --git a/paddle/fluid/framework/parallel_executor.cc b/paddle/fluid/framework/parallel_executor.cc
index 4abde1f21e9701794154bee0c78be8c35582c34c..662a29d41937521810473cf29fe9494b1b4a9d9e 100644
--- a/paddle/fluid/framework/parallel_executor.cc
+++ b/paddle/fluid/framework/parallel_executor.cc
@@ -158,10 +158,13 @@ ParallelExecutor::ParallelExecutor(
       var_infos.back().persistable_ = node->Var()->Persistable();
     }
   }
-  // If the loss_var_name is given, the number of graph should be only one.
-  if (loss_var_name.size()) {
-    PADDLE_ENFORCE_EQ(ir::GraphNum(*graph), 1,
-                      "The number of graph should be only one");
+
+  if (VLOG_IS_ON(5)) {
+    // If the loss_var_name is given, the number of graph should be only one.
+    if (loss_var_name.size()) {
+      PADDLE_ENFORCE_EQ(ir::GraphNum(*graph), 1,
+                        "The number of graph should be only one");
+    }
   }
 
   if (exec_strategy.type_ == ExecutionStrategy::kDefault) {
diff --git a/paddle/fluid/inference/api/CMakeLists.txt b/paddle/fluid/inference/api/CMakeLists.txt
index e2027b7cb4d584ffcc48624d2c01e65a61829975..a55426f74f988176aeb180e48d1af8632ed3b5c7 100644
--- a/paddle/fluid/inference/api/CMakeLists.txt
+++ b/paddle/fluid/inference/api/CMakeLists.txt
@@ -61,8 +61,6 @@ cc_test(test_paddle_inference_api
 
 inference_api_test(test_api_impl SRC api_impl_tester.cc
                     ARGS test_word2vec test_image_classification)
-
-set(PYTHON_TESTS_DIR ${PADDLE_BINARY_DIR}/python/paddle/fluid/tests)
 cc_test(test_analysis_predictor SRCS analysis_predictor_tester.cc DEPS analysis_predictor ${inference_deps} paddle_inference_api
         ARGS --dirname=${PYTHON_TESTS_DIR}/book)
 
diff --git a/python/paddle/fluid/tests/CMakeLists.txt b/python/paddle/fluid/tests/CMakeLists.txt
index 7ad923d3321ec8a88b60d7f4f7777e12fad8faa6..d24417bbacb503d9ea70e68e7e0edb59e7dddbde 100644
--- a/python/paddle/fluid/tests/CMakeLists.txt
+++ b/python/paddle/fluid/tests/CMakeLists.txt
@@ -1,5 +1,3 @@
-set(PYTHON_TESTS_DIR ${PADDLE_BINARY_DIR}/python/paddle/fluid/tests CACHE INTERNAL "python tests directory")
-
 file(GLOB TEST_OPS RELATIVE "${CMAKE_CURRENT_SOURCE_DIR}" "test_*.py")
 string(REPLACE ".py" "" TEST_OPS "${TEST_OPS}")
 
diff --git a/python/paddle/utils/__init__.py b/python/paddle/utils/__init__.py
index 5de6f966a038543ffffdf955251f587e3eb15cad..db6fe2d5fff4ed1617d793faee23f01395841768 100644
--- a/python/paddle/utils/__init__.py
+++ b/python/paddle/utils/__init__.py
@@ -12,5 +12,5 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-from plot import Ploter
+from .plot import Ploter
 __all__ = ['dump_config', 'Ploter']