code: def setUp(self):
      super().setUp()
      if self.already_run:
          raise RuntimeError(
              "Each test in this test suite must run in a separate process. "
              "Increase number of shards used to run this test."
          )
      self.already_run = True
  
file_path: tensorflow/tensorflow/python/framework/config_vgpu_test.py
imports: from tensorflow.python.eager import context
  from tensorflow.python.framework import config
  from tensorflow.python.framework import ops
  from tensorflow.python.platform import test
label_desc: Use image node_id 1 for calling the DeviceTest obj's underlying member method code with example usage: obj.setUp() without return types