code: def test_inference_no_pipelining(self):
      self._forward_backward_test_impl(
          True, forward_backward_no_pipelining, 1, None
      )
  
imports: import os
  import logging
  import itertools
  from typing import Optional, Tuple, List
  import unittest
  import torch
  from torch.testing._internal import common_utils
  from torch.testing._internal import common_cuda
  from torch.testing._internal import common_distributed
  from apex._autocast_utils import _get_autocast_dtypes
  from apex.transformer import parallel_state
  from apex.transformer.pipeline_parallel import utils
  from apex.transformer.pipeline_parallel.schedules.common import FwdStepFunc, build_model, _get_params_for_weight_decay_optimization
  from apex.transformer.pipeline_parallel.schedules.fwd_bwd_no_pipelining import forward_backward_no_pipelining
  from apex.transformer.pipeline_parallel.schedules.fwd_bwd_pipelining_with_interleaving import _forward_backward_pipelining_with_interleaving
  from apex.transformer.pipeline_parallel.schedules.fwd_bwd_pipelining_without_interleaving import forward_backward_pipelining_without_interleaving
  from apex.transformer.testing.distributed_test_base import UccDistributedTestBase
  from apex.transformer.testing import commons
label_desc: Use image node_id 5 for calling the UccPipelineParallelForwardBackwardProf obj's underlying member method code with example usage: obj.test_inference_no_pipelining() without return types