code: def declare(name):
      c_lib.byteps_torch_declare_tensor(name.encode())
      return 0
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  from distutils.version import LooseVersion
  import torch
  from byteps.torch import c_lib
  from byteps.common import BytePSBasics
  from byteps.torch.compression import Compression
label_desc: Use image node_id 12 for calling a global function with example usage: declare(name) and returns: int