code: def initialize_device_mesh(device_mesh_info: DeviceMeshInfo):
      """
      This method is used to initialize the device mesh.
  
      Args:
          device_mesh_info (DeviceMeshInfo): The information used to initialize device mesh.
      """
      # parse the device mesh info
      physical_devices = device_mesh_info.physical_ids
      physical_mesh = torch.tensor(physical_devices)
      logical_mesh_shape = device_mesh_info.mesh_shape
  
      if logical_mesh_shape is None:
          ab_profiler = AlphaBetaProfiler(physical_devices)
          # search for the best logical mesh shape
          logical_mesh_id = ab_profiler.search_best_logical_mesh()
          logical_mesh_id = torch.Tensor(logical_mesh_id).to(torch.int)
  
      else:
          logical_mesh_id = physical_mesh.reshape(logical_mesh_shape)
  
      device_mesh = DeviceMesh(
          physical_mesh_id=physical_mesh,
          logical_mesh_id=logical_mesh_id,
          init_process_group=True,
      )
      return device_mesh
  
file_path: ColossalAI/colossalai/cluster/device_mesh_manager.py
imports: from dataclasses import dataclass
  from typing import Dict, List, Tuple, Union
  import torch
  import torch.distributed
  from colossalai.device.alpha_beta_profiler import AlphaBetaProfiler
  from colossalai.device.device_mesh import DeviceMesh
label_desc: Use image node_id 1 for calling a global function with example usage: initialize_device_mesh(device_mesh_info) and returns: device_mesh