class_docstr: Cache manager for autotune
code: def load(self):
      if os.path.exists(self.file_path):
          with open(self.file_path, "rb") as handle:
              loaded_dict = pickle.load(handle)
          return loaded_dict
      else:
          return None
  
imports: import torch
  import triton
  import os
  from filelock import FileLock
  import deepspeed.ops.transformer.inference.triton.triton_matmul_kernel
  import pickle
  from io import open
  import deepspeed
  from pathlib import Path
  import atexit
label_desc: Use image node_id 4 for calling the AutotuneCacheManager obj's underlying member method code with example usage: obj.load() and returns: loaded_dict, None