code: def get_dram_gbps(device=None):
      """return DRAM bandwidth in GB/s"""
      import torch
  
      from .runtime import driver
  
      if not device:
          device = torch.cuda.current_device()
      mem_clock_khz = driver.utils.get_device_properties(device)[
          "mem_clock_rate"
      ]  # in kHz
      bus_width = driver.utils.get_device_properties(device)[
          "mem_bus_width"
      ]
      bw_gbps = mem_clock_khz * bus_width * 2 / 1e6 / 8  # In GB/s
      return bw_gbps
  
imports: import functools
  import os
  import subprocess
  import sys
  from contextlib import contextmanager
  from typing import Any, Dict, List
  from .None import language
label_desc: Use image node_id 6 for calling a global function with example usage: get_dram_gbps(device) and returns: bw_gbps