diff --git a/CMakeLists.txt b/CMakeLists.txt
index 1a0e597b5c37af3cceb8693986cad7f6fac3ba8e..aac6879b85e184a1b7ad7b034c78d92295c7e207 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -22,7 +22,7 @@ elseif (LINUX)
 endif()
 
 if (NOT PYTHON_EXECUTABLE)
-  set(PYTHON_EXECUTABLE python3)
+  set(PYTHON_EXECUTABLE python)
 endif()
 
 find_program(PYTHON ${PYTHON_EXECUTABLE})
diff --git a/python/paddle_fl/mpc/examples/mnist_demo/mnist_demo.py b/python/paddle_fl/mpc/examples/mnist_demo/mnist_demo.py
index a1b6e5b984fa739c1c21471becab80b6314841b3..efa69836b13ad996f19967980da6d4c9543cf181 100644
--- a/python/paddle_fl/mpc/examples/mnist_demo/mnist_demo.py
+++ b/python/paddle_fl/mpc/examples/mnist_demo/mnist_demo.py
@@ -86,9 +86,9 @@ step = 0
 for epoch_id in range(epoch_num):
     # feed data via loader
     for sample in loader():
-        exe.run(feed=sample)
+        loss = exe.run(feed=sample, fetch_list=[cost.name])
         if step % 50 == 0:
-            print('Epoch={}, Step={}'.format(epoch_id, step))
+            print('Epoch={}, Step={}, loss={}'.format(epoch_id, step, loss))
         step += 1
 
 end_time = time.time()
diff --git a/python/paddle_fl/mpc/examples/mnist_demo/prepare_data.py b/python/paddle_fl/mpc/examples/mnist_demo/prepare_data.py
index 13e2a820b0da7fac9538b31c0227d03a8c49993c..54d5716672d5c4f1f74bfd0c9f0597a38fdbd56b 100644
--- a/python/paddle_fl/mpc/examples/mnist_demo/prepare_data.py
+++ b/python/paddle_fl/mpc/examples/mnist_demo/prepare_data.py
@@ -94,6 +94,6 @@ def decrypt_data_to_file(filepath, shape, decrypted_filepath):
             for i in p:
                 f.write(str(i) + '\n')
 
-# generate_encrypted_data()
-# generate_encrypted_test_data()
+generate_encrypted_data()
+generate_encrypted_test_data()
 
diff --git a/python/paddle_fl/mpc/examples/mnist_demo/run_standalone.sh b/python/paddle_fl/mpc/examples/mnist_demo/run_standalone.sh
new file mode 100755
index 0000000000000000000000000000000000000000..4c6041fbad34663f8e888bad8eb27c9e406aed63
--- /dev/null
+++ b/python/paddle_fl/mpc/examples/mnist_demo/run_standalone.sh
@@ -0,0 +1,70 @@
+# Copyright (c) 2020 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.
+
+#!/bin/bash
+#
+# A tools to faciliate the parallel running of fluid_encrypted test scrips.
+# A test script is EXPECTED to accepted arguments in the following format:
+#
+# SCRIPT_NAME $ROLE $SERVER $PORT
+#   ROLE:    the role of the running party
+#   SERVER:  the address of the party discovering service
+#   PORT:    the port of the party discovering service
+#
+# This tool will try to fill the above three argument to the test script,
+# so that totally three processes running the script will be started, to
+# simulate run of three party in a standalone machine.
+#
+# Usage of this script:
+#
+# bash run_standalone.sh TEST_SCRIPT_NAME
+#
+
+# modify the following vars according to your environment
+PYTHON="python"
+REDIS_HOME="path_to_redis_bin"
+SERVER="localhost"
+PORT=9937
+
+function usage() {
+    echo 'run_standalone.sh SCRIPT_NAME [ARG...]'
+    exit 0
+}
+
+if [ $# -lt 1 ]; then
+    usage
+fi
+
+SCRIPT=$1
+if [ ! -f $SCRIPT ]; then
+    echo 'Could not find script of '$SCRIPT
+    exit 1
+fi
+
+REDIS_BIN=$REDIS_HOME/redis-cli
+if [ ! -f $REDIS_BIN ]; then
+    echo 'Could not find redis cli in '$REDIS_HOME
+    exit 1
+fi
+
+# clear the redis cache
+$REDIS_BIN -h $SERVER -p $PORT flushall
+
+
+for role in {1..2}; do
+    $PYTHON $SCRIPT $role $SERVER $PORT 2>&1 >/dev/null &
+done
+
+# for party of role 0, run in a foreground mode and show the output
+$PYTHON $SCRIPT 0 $SERVER $PORT
diff --git a/python/paddle_fl/mpc/examples/run_standalone.sh b/python/paddle_fl/mpc/examples/run_standalone.sh
index fd409c897ddced184b4dc91011f5f3176a73710a..4c6041fbad34663f8e888bad8eb27c9e406aed63 100755
--- a/python/paddle_fl/mpc/examples/run_standalone.sh
+++ b/python/paddle_fl/mpc/examples/run_standalone.sh
@@ -32,13 +32,10 @@
 #
 
 # modify the following vars according to your environment
-LD_LIB_PATH="path_to_needed_libs"
 PYTHON="python"
 REDIS_HOME="path_to_redis_bin"
 SERVER="localhost"
 PORT=9937
-MPC_DATA_UTILS_MODULE_DIRPATH="mpc_data_utils_so_dirpath"
-export PYTHONPATH=$MPC_DATA_UTILS_MODULE_DIRPATH:$PYTHONPATH
 
 function usage() {
     echo 'run_standalone.sh SCRIPT_NAME [ARG...]'
@@ -64,8 +61,6 @@ fi
 # clear the redis cache
 $REDIS_BIN -h $SERVER -p $PORT flushall
 
-# kick off script with roles of 1 and 2, and redirect output to /dev/null
-export LD_LIBRARY_PATH=$LD_LIB_PATH:$LD_LIBRARY_PATH
 
 for role in {1..2}; do
     $PYTHON $SCRIPT $role $SERVER $PORT 2>&1 >/dev/null &
diff --git a/python/paddle_fl/mpc/examples/uci_demo/prepare_data.py b/python/paddle_fl/mpc/examples/uci_demo/prepare_data.py
index df6f61caeb01eb28aaa74658b4d81297241467e2..2d327ce7726eb078b9c2bed06ba5d69ff35ef3b6 100644
--- a/python/paddle_fl/mpc/examples/uci_demo/prepare_data.py
+++ b/python/paddle_fl/mpc/examples/uci_demo/prepare_data.py
@@ -60,3 +60,6 @@ def load_decrypt_data(filepath, shape):
     for instance in aby3_share_reader():
         p = aby3.reconstruct(np.array(instance))
         print(p)
+
+
+generate_encrypted_data()
diff --git a/python/paddle_fl/mpc/examples/uci_demo/run_standalone.sh b/python/paddle_fl/mpc/examples/uci_demo/run_standalone.sh
new file mode 100755
index 0000000000000000000000000000000000000000..4c6041fbad34663f8e888bad8eb27c9e406aed63
--- /dev/null
+++ b/python/paddle_fl/mpc/examples/uci_demo/run_standalone.sh
@@ -0,0 +1,70 @@
+# Copyright (c) 2020 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.
+
+#!/bin/bash
+#
+# A tools to faciliate the parallel running of fluid_encrypted test scrips.
+# A test script is EXPECTED to accepted arguments in the following format:
+#
+# SCRIPT_NAME $ROLE $SERVER $PORT
+#   ROLE:    the role of the running party
+#   SERVER:  the address of the party discovering service
+#   PORT:    the port of the party discovering service
+#
+# This tool will try to fill the above three argument to the test script,
+# so that totally three processes running the script will be started, to
+# simulate run of three party in a standalone machine.
+#
+# Usage of this script:
+#
+# bash run_standalone.sh TEST_SCRIPT_NAME
+#
+
+# modify the following vars according to your environment
+PYTHON="python"
+REDIS_HOME="path_to_redis_bin"
+SERVER="localhost"
+PORT=9937
+
+function usage() {
+    echo 'run_standalone.sh SCRIPT_NAME [ARG...]'
+    exit 0
+}
+
+if [ $# -lt 1 ]; then
+    usage
+fi
+
+SCRIPT=$1
+if [ ! -f $SCRIPT ]; then
+    echo 'Could not find script of '$SCRIPT
+    exit 1
+fi
+
+REDIS_BIN=$REDIS_HOME/redis-cli
+if [ ! -f $REDIS_BIN ]; then
+    echo 'Could not find redis cli in '$REDIS_HOME
+    exit 1
+fi
+
+# clear the redis cache
+$REDIS_BIN -h $SERVER -p $PORT flushall
+
+
+for role in {1..2}; do
+    $PYTHON $SCRIPT $role $SERVER $PORT 2>&1 >/dev/null &
+done
+
+# for party of role 0, run in a foreground mode and show the output
+$PYTHON $SCRIPT 0 $SERVER $PORT
diff --git a/python/paddle_fl/paddle_fl/examples/dpsgd_demo/fl_server.py b/python/paddle_fl/paddle_fl/examples/dpsgd_demo/fl_server.py
index bfda7a2e05e0f0efe5169ac8265d58db2a127d5e..aa1e9a86504673968cdfb969de5321df5d33277e 100644
--- a/python/paddle_fl/paddle_fl/examples/dpsgd_demo/fl_server.py
+++ b/python/paddle_fl/paddle_fl/examples/dpsgd_demo/fl_server.py
@@ -14,8 +14,8 @@
 
 import paddle_fl.paddle_fl as fl
 import paddle.fluid as fluid
-from paddle_fl.core.server.fl_server import FLServer
-from paddle_fl.core.master.fl_job import FLRunTimeJob
+from paddle_fl.paddle_fl.core.server.fl_server import FLServer
+from paddle_fl.paddle_fl.core.master.fl_job import FLRunTimeJob
 server = FLServer()
 server_id = 0
 job_path = "fl_job_config"
diff --git a/python/paddle_fl/paddle_fl/examples/femnist_demo/fl_trainer.py b/python/paddle_fl/paddle_fl/examples/femnist_demo/fl_trainer.py
index 4e58610f7e04dba9eb5f4ed9c2492df9b85cee06..131ee7a3911d3c01f02f5847c938c09519a0b3a7 100644
--- a/python/paddle_fl/paddle_fl/examples/femnist_demo/fl_trainer.py
+++ b/python/paddle_fl/paddle_fl/examples/femnist_demo/fl_trainer.py
@@ -14,7 +14,7 @@
 
 from paddle_fl.paddle_fl.core.trainer.fl_trainer import FLTrainerFactory
 from paddle_fl.paddle_fl.core.master.fl_job import FLRunTimeJob
-import paddle_fl.paddle_fl.dataset.femnist
+import paddle_fl.paddle_fl.dataset.femnist as femnist
 import numpy
 import sys
 import paddle
@@ -76,7 +76,7 @@ while not trainer.stop():
     #train_data,test_data= data_generater(trainer_id,inner_step=trainer._step,batch_size=64,count_by_step=count_by_step)
     train_reader = paddle.batch(
         paddle.reader.shuffle(
-            paddle_fl.dataset.femnist.train(
+            femnist.train(
                 trainer_id,
                 inner_step=trainer._step,
                 batch_size=64,
@@ -85,7 +85,7 @@ while not trainer.stop():
         batch_size=64)
 
     test_reader = paddle.batch(
-        paddle_fl.dataset.femnist.test(
+        femnist.test(
             trainer_id,
             inner_step=trainer._step,
             batch_size=64,
diff --git a/python/paddle_fl/paddle_fl/version.py b/python/paddle_fl/paddle_fl/version.py
deleted file mode 100644
index 8540fde4fe0814938593a0a6a93854d99fbb51a5..0000000000000000000000000000000000000000
--- a/python/paddle_fl/paddle_fl/version.py
+++ /dev/null
@@ -1,16 +0,0 @@
-# Copyright (c) 2019  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.
-""" PaddleFL version string """
-fl_version = "0.2.0"
-module_proto_version = "0.2.0"
diff --git a/python/setup.py b/python/setup.py
index 79f73d506d71d9771ec06625c2d0489c5190ba13..5cc8769e5979b213c99cbb919f62c9e5f63c7d89 100644
--- a/python/setup.py
+++ b/python/setup.py
@@ -22,7 +22,7 @@ import platform
 
 from setuptools import find_packages
 from setuptools import setup
-from paddle_fl.version import fl_version
+from version import fl_version
 
 def python_version():
     """
@@ -34,7 +34,7 @@ def python_version():
 max_version, mid_version, min_version = python_version()
 
 REQUIRED_PACKAGES = [
-    'six >= 1.10.0', 'protobuf >= 3.1.0', 'paddlepaddle == 1.6.3'
+    'six >= 1.10.0', 'protobuf >= 3.1.0', 'paddlepaddle == 1.6.3', 'paddlepaddle-gpu >= 1.8'
 ]
 
 if max_version < 3:
diff --git a/python/paddle_fl/version.py b/python/version.py
similarity index 100%
rename from python/paddle_fl/version.py
rename to python/version.py