code: def gpu_mem_get_free_mbs(torch_gpu_id=None):
      """Return the amount of free memory (in rounded MBs)"""
      return gpu_mem_get_mbs(torch_gpu_id).free
  
file_path: ipyexperiments/ipyexperiments/utils/mem.py
imports: import gc
  import os
  from collections import namedtuple
  from ipyexperiments.utils.pynvml_gate import load_pynvml_env
label_desc: Use image node_id 6 for calling a global function with example usage: gpu_mem_get_free_mbs(torch_gpu_id) and returns: gpu_mem_get_mbs