text: # 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.
  
  from __future__ import print_function
  
  import os
  import unittest
  import tempfile
  from test_dist_fleet_heter_base import TestFleetHeterBase
  import paddle
  
  paddle.enable_static()
  
  
  class TestDistHeterDatasetAsync2x2(TestFleetHeterBase):
      def _setup_config(self):
          self._mode = "async"
          self._reader = "dataset"
  
      def check_with_place(self,
                           model_file,
                           delta=1e-3,
                           check_error_log=False,
                           need_envs={}):
          required_envs = {
              "PATH": os.getenv("PATH", ""),
              "PYTHONPATH": os.getenv("PYTHONPATH", ""),
              "LD_LIBRARY_PATH": os.getenv("LD_LIBRARY_PATH", ""),
              "FLAGS_rpc_deadline": "5000",  # 5sec to fail fast
              "http_proxy": "",
              "CPU_NUM": "2"
          }
  
          required_envs.update(need_envs)
  
          if check_error_log:
              required_envs["GLOG_v"] = "4"
              required_envs["GLOG_logtostderr"] = "1"
  
          tr0_losses, tr1_losses = self._run_cluster(model_file, required_envs)
  
      def test_dist_train(self):
          self.check_with_place(
              "dist_fleet_heter_pipeline_ctr.py",
              delta=1e-5,
              check_error_log=True)
  
  
  if __name__ == "__main__":
      unittest.main()
  