code: def track_memory():
      res = psutil.virtual_memory()
      tracker.add(
          {
              "memory.total": res.total,
              "memory.used": res.used,
              "memory.available": res.available,
          }
      )
  
file_path: labml/client/test/hardware_track.py
imports: import time
  import psutil
  from labml import lab, experiment, tracker
  from labml.logger import inspect
label_desc: Use image node_id 2 for calling a global function with example usage: track_memory() without return types