code: def warmup():
      """Warm-up the profiler session.
  
      The profiler session will set up profiling context, including loading CUPTI
      library for GPU profiling. This is used for improving the accuracy of
      the profiling results.
  
      """
      start("")
      stop(save=False)
  
file_path: tensorflow-upstream/tensorflow/python/profiler/profiler_v2.py
imports: import collections
  import threading
  from tensorflow.python.framework import errors
  from tensorflow.python.platform import tf_logging
  from tensorflow.python.profiler.internal import _pywrap_profiler
  from tensorflow.python.util.tf_export import tf_export
label_desc: Use image node_id 3 for calling a global function with example usage: warmup() without return types