code: def run(self, class_tmpdir, val1, val2):
      assert int(os.environ["WORLD_SIZE"]) == self.world_size
      local_rank = os.environ["LOCAL_RANK"]
      file_path = os.path.join(
          class_tmpdir, f"checkpoint-{local_rank}.pt"
      )
      with open(file_path, "w") as f:
          f.write(f"{local_rank},{val1},{val2}")
  
imports: import os
  import torch
  import deepspeed.comm
  import deepspeed
  from unit.common import DistributedTest, DistributedFixture, get_master_port
  from unit.simple_model import SimpleModel
  from deepspeed.accelerator import get_accelerator
  import pytest
  from deepspeed.ops.op_builder import FusedAdamBuilder
label_desc: Use image node_id 1 for calling the distributed_fixture obj's underlying member method code with example usage: obj.run(class_tmpdir, val1, val2) without return types