docstr: Returns the free (available) memory (in MB) as an integer.
docstr_tok: ["Returns","the","free","(","available",")","memory","(","in","MB",")","as","an","integer","."]
code: def memory_free(self):
      """
      Returns the free (available) memory (in MB) as an integer.
      """
      v = self.memory_total - self.memory_used
      return max(v, 0)
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  from __future__ import unicode_literals
  import json
  import platform
  import sys
  from datetime import datetime
  import psutil
  from ..gpu import pynvml
label_desc: Use image node_id 9 for calling the GPUStat obj's underlying member method code with example usage: obj.memory_free() and returns: max