code: def __init__(
      self,
      region_list: List[Region],
      memory_budget: float = -1.0,
      search_window_size: int = 3,
  ):
      super().__init__(region_list, memory_budget)
  
      self.search_window_size = search_window_size
      # Records the prefetch execution location of the offloaded region
      self.region_to_region_map = {}
      self.best_ts: AsynTrainingSimulator = None
  
      self._init_state()
  
imports: import time
  from abc import ABC, abstractmethod
  from typing import Dict, List, Type
  import torch
  from torch.fx.node import Node
  from colossalai.utils.device import get_current_device
  from .region import Region
  from .training_simulator import AsynTrainingSimulator, SynTrainingSimulator, TrainingSimulator
  from .util import NodeInfo, NvDevicePower
label_desc: Use image node_id 1 to create a new AsynGreedySolver object from inherited base classes: Solver with example: obj = AsynGreedySolver(region_list, memory_budget, search_window_size)