code: def convert_to_gpu_index(index, gpus):
      if "Gpu" in str(type(index)):
          return index
      if gpus is None:
          return faiss.index_cpu_to_all_gpus(index)
      return faiss.index_cpu_to_gpus_list(index, gpus=gpus)
  
imports: import numpy
  import torch
  from ..distances import BatchedDistance, CosineSimilarity
  from .None import common_functions
label_desc: Use image node_id 2 for calling a global function with example usage: convert_to_gpu_index(index, gpus) and returns: faiss, index, faiss