code: def experiment(cfg: DictConfig) -> None:
      # CUDA_VISIBLE_DEVICES must have been set.
  
      if "CUDA_DEVICE_ORDER" not in os.environ:
          os.environ["CUDA_DEVICE_ORDER"] = "PCI_BUS_ID"
  
      if not _setup_envvars_for_cluster():
          logger.info("Running locally")
  
      # TODO: The following may be needed for hydra/submitit it to work
      expand_args_fields(ImplicitronModelBase)
      expand_args_fields(AdaptiveRaySampler)
      expand_args_fields(MultiPassEmissionAbsorptionRenderer)
      expand_args_fields(ImplicitronDataSource)
  
      experiment = Experiment(**cfg)
      dump_cfg(cfg)
      experiment.run()
  
imports: import logging
  import os
  import warnings
  from dataclasses import field
  import hydra
  import torch
  from accelerate import Accelerator
  from omegaconf import DictConfig, OmegaConf
  from packaging import version
  from pytorch3d.implicitron.dataset.data_source import DataSourceBase, ImplicitronDataSource
  from pytorch3d.implicitron.models.base_model import ImplicitronModelBase
  from pytorch3d.implicitron.models.renderer.multipass_ea import MultiPassEmissionAbsorptionRenderer
  from pytorch3d.implicitron.models.renderer.ray_sampler import AdaptiveRaySampler
  from pytorch3d.implicitron.tools.config import Configurable, expand_args_fields, remove_unused_components, run_auto_creation
  from .impl.model_factory import ModelFactoryBase
  from .impl.optimizer_factory import OptimizerFactoryBase
  from .impl.training_loop import TrainingLoopBase
  from .impl.utils import seed_all_random_engines
label_desc: Use image node_id 3 for calling a global function with example usage: experiment(cfg) without return types