text: #   Copyright (c) 2021 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.
  
  import unittest
  import parl
  from parl.remote.master import Master
  from parl.remote.worker import Worker
  import time
  import threading
  from parl.remote.client import disconnect
  from parl.remote import exceptions
  import subprocess
  from parl.utils import logger
  import paddle.fluid as fluid
  import os
  
  
  @parl.remote_class
  class Actor(object):
      def __init__(self, cuda=False):
          if cuda:
              place = fluid.CUDAPlace(0)
          else:
              place = fluid.CPUPlace()
          exe = fluid.Executor(place)
          exe.run(fluid.default_startup_program())
  
  
  class TestCluster(unittest.TestCase):
      def tearDown(self):
          disconnect()
  
      def test_gpu(self):
          master = Master(port=8241)
          th = threading.Thread(target=master.run)
          th.start()
          time.sleep(1)
  
          worker1 = Worker('localhost:8241', 4)
  
          parl.connect('localhost:8241')
  
          if parl.utils.is_gpu_available():
              actor = Actor(cuda=True)
          else:
              actor = Actor(cuda=False)
  
          del actor
          master.exit()
          worker1.exit()
  
  
  if __name__ == '__main__':
      unittest.main()
  