code: def _gpu_val_key(index, name):
      return f"sys/gpu{index}/{name}"
  
imports: import csv
  import io
  import subprocess
  import sys
  from guild import util
  from guild.plugins.summary_util import SummaryPlugin
label_desc: Use image node_id 9 for calling a global function with example usage: _gpu_val_key(index, name) and returns: str, index, str, name