code: def clear_layout_converter():
      global layout_converter
      layout_converter.cached_solution.clear()
  
imports: import copy
  import operator
  from functools import reduce
  from typing import Union
  import torch
  import torch.distributed
  from torch.distributed import ProcessGroup
  from colossalai.device.device_mesh import DeviceMesh
  from .layout import Layout
  from .layout_converter import LayoutConverter
  from .sharding_spec import ShardingSpec
label_desc: Use image node_id 1 for calling a global function with example usage: clear_layout_converter() without return types