code: def setUp(self):
      gpu_count = get_gpu_count()
      if gpu_count > 0:
          place = fluid.CUDAPlace(0)
          self.gpu_id = 0
      else:
          place = fluid.CPUPlace()
          self.gpu_id = -1
      self.executor = fluid.Executor(place)
  
file_path: PARL/parl/core/fluid/tests/policy_distribution_test_fluid.py
imports: import numpy
  import unittest
  from paddle import fluid
  from parl import layers
  from parameterized import parameterized
  from parl.core.fluid.policy_distribution import *
  from parl.utils import get_gpu_count, np_softmax, np_cross_entropy
label_desc: Use image node_id 1 for calling the PolicyDistributionTest obj's underlying member method code with example usage: obj.setUp() without return types