text: #   Copyright (c) 2018 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
  from test_dist_base import TestDistBase
  
  import os
  flag_name = os.path.splitext(__file__)[0]
  
  
  def skip_ci(func):
      on_ci = bool(int(os.environ.get("SKIP_UNSTABLE_CI", '0')))
  
      def __func__(*args, **kwargs):
          if on_ci:
              return
          return func(*args, **kwargs)
  
      return __func__
  
  
  class TestDistCTR2x2(TestDistBase):
      def _setup_config(self):
          self._sync_mode = True
          self._enforce_place = "CPU"
  
      def test_dist_ctr(self):
          self.check_with_place(
              "dist_ctr.py", delta=1e-2, check_error_log=True, log_name=flag_name)
  
  
  @skip_ci
  class TestDistCTRWithL2Decay2x2(TestDistBase):
      def _setup_config(self):
          self._sync_mode = True
          self._enforce_place = "CPU"
  
      def test_dist_ctr(self):
          need_envs = {"USE_L2_DECAY": "1"}
          self.check_with_place(
              "dist_ctr.py",
              delta=1e-7,
              check_error_log=True,
              need_envs=need_envs,
              log_name=flag_name)
  
  
  class TestDistCTR2x2_ASYNC(TestDistBase):
      def _setup_config(self):
          self._sync_mode = False
          self._hogwild_mode = True
          self._enforce_place = "CPU"
  
      def test_dist_ctr(self):
          need_envs = {
              "FLAGS_communicator_send_queue_size": "2",
              "FLAGS_communicator_max_merge_var_num": "2",
              "FLAGS_communicator_max_send_grad_num_before_recv": "2",
          }
  
          self.check_with_place(
              "dist_ctr.py",
              delta=100,
              check_error_log=True,
              need_envs=need_envs,
              log_name=flag_name)
  
  
  class TestDistCTR2x2_ASYNC2(TestDistBase):
      def _setup_config(self):
          self._sync_mode = False
          self._hogwild_mode = True
          self._enforce_place = "CPU"
  
      def test_dist_ctr(self):
          need_envs = {
              "FLAGS_communicator_send_queue_size": "2",
              "FLAGS_communicator_max_merge_var_num": "2",
              "FLAGS_communicator_max_send_grad_num_before_recv": "2",
              "FLAGS_communicator_independent_recv_thread": "0"
          }
  
          self.check_with_place(
              "dist_ctr.py",
              delta=100,
              check_error_log=True,
              need_envs=need_envs,
              log_name=flag_name)
  
  
  if __name__ == "__main__":
      unittest.main()
  