'Args:
config, gpu_prefetch: same as in :class:`SyncMultiGPUTrainerParameterServer`'

def __init__(self, config, gpu_prefetch=True):

    apply_prefetch_policy(config, gpu_prefetch)
    self._input_source = config.data
    logger.warn("Note    that    SyncMultiGPUTrainerReplicated    doesn't    support    inference.")
    super(SyncMultiGPUTrainerReplicated, self).__init__(config)
