code: def set_num_layers(nlayers):
      global num_layers
      num_layers = nlayers
  
imports: import copy
  import torch
  import contextlib
  from deepspeed import comm
  import mmap
  from torch import _C
  from torch.cuda import _lazy_call, device
  from deepspeed.runtime.config import DeepSpeedConfig
  from deepspeed.utils import logger
  from deepspeed.runtime.utils import copy_to_device, move_to_device, see_memory_usage, bwc_tensor_model_parallel_rank
  from deepspeed.utils.timer import SynchronizedWallClockTimer
label_desc: Use image node_id 16 for calling a global function with example usage: set_num_layers(nlayers) without return types