code: def _reset():
      shutdown()
      init()
  
imports: from horovod.common.elastic import run_fn
  from horovod.torch.mpi_ops import init, shutdown
  from horovod.torch.elastic.sampler import ElasticSampler
  from horovod.torch.elastic.state import TorchState
label_desc: Use image node_id 2 for calling a global function with example usage: _reset() without return types