class_docstr: The `RuntimeManager` can be used for a simplified resource management.
  
  It aims to automatically detect valid `Runtimes` based on the ssh configuration.
  It can be used to create a `RuntimeGroup` based on the automatically detected
  instances and possibly based on further filters such as GPU availability.
class_docstr_tok: ["The","`","RuntimeManager","`","can","be","used","for","a","simplified","resource","management",".","It","aims","to","automatically","detect","valid","`","Runtimes","`","based","on","the","ssh","configuration",".","It","can","be","used","to","create","a","`","RuntimeGroup","`","based","on","the","automatically","detected","instances","and","possibly","based","on","further","filters","such","as","GPU","availability","."]
docstr: Print the inactive hosts.
  
  Note:
      Inactive means that the host is not reachable via ssh or the check vie Runtime.is_valid_runtime() failed.
docstr_tok: ["Print","the","inactive","hosts",".","Note",":","Inactive","means","that","the","host","is","not","reachable","via","ssh","or","the","check","vie","Runtime.is_valid_runtime","(",")","failed","."]
code: def print_inactive_hosts(self) -> None:
      """Print the inactive hosts.
  
      Note:
          Inactive means that the host is not reachable via ssh or the check vie Runtime.is_valid_runtime() failed.
  
      """
      for host in self.inactive_hosts:
          print(f"{host} (inactive)")
  
imports: import atexit
  import logging
  import warnings
  from copy import deepcopy
  from multiprocessing import Pool, Process
  from typing import Dict, Generator, List, Optional, Union
  from storm import Storm
  from lazycluster import _utils
  from lazycluster.exceptions import InvalidRuntimeError, NoPortsLeftError, NoRuntimesDetectedError, PortInUseError
  from lazycluster.runtimes import Runtime, RuntimeTask
label_desc: Use image node_id 7 for calling the RuntimeManager obj's underlying member method code with example usage: obj.print_inactive_hosts() without return types