code: def run(self):
      with distributed_utils.slurm_distributed_context(self.opt) as opt:
          self.train_loop = fsdp_utils.JoinableTrainLoop(opt)
          with fsdp_utils.fsdp_join(self.train_loop):
              return self.train_loop.train()
  
file_path: ParlAI/parlai/scripts/distributed_train.py
imports: import parlai.scripts.train_model
  from parlai.core.script import ParlaiScript
  import parlai.utils.distributed
  import parlai.utils.fsdp
label_desc: Use image node_id 2 for calling the DistributedTrain obj's underlying member method code with example usage: obj.run() and returns: self