code: def _preInit(self):
      fileNumber = 0
      while (
          os.path.isfile(
              self.diskname + str(fileNumber) + ".memmap.cpy.npy"
          )
          == True
      ):
          fileNumber = fileNumber + 1
      else:
          self.fileName = self.diskname + str(fileNumber) + ".memmap"
      numpyMemmap = np.memmap(
          self.fileName,
          dtype="float32",
          mode="w+",
          shape=(self.total_classes, self.embed_dimension),
      )
      np.save(self.fileName + ".cpy", numpyMemmap, allow_pickle=True)
      del numpyMemmap
      os.remove(self.fileName)
  
imports: import numpy
  import cupy
  import torch
  import os
  from torch.utils.dlpack import to_dlpack
  from torch.utils.dlpack import from_dlpack
label_desc: Use image node_id 1 for calling the _CommonMM obj's underlying member method code with example usage: obj._preInit() without return types