def __init__(self, pipe_c2s, pipe_s2c, gpus):
        """
        Args:
            gpus (list[int]): the gpus used to run inference
        """
        super(MySimulatorMaster, self).__init__(pipe_c2s, pipe_s2c)
        self.queue = queue.Queue(maxsize=BATCH_SIZE * 8 * 2)
        self._gpus = gpus

        Args:
            gpus (list[int]): the gpus used to run inference
        
examples/A3C-Gym/train-atari.py