You can use Visor command line utility to do this. Run 'ignitevisorcmd.sh' script, use 'open' command to connect Visor to topology and run 'kill -ih' command. It will give you the list of hosts that have nodes. Choose one of them and Visor will stop all nodes on that host (note that it can be a local or remote host - Visor supports both).
For all options provided by 'kill' command, type 'help kill'.