Hello.
DNS is a domain name server.Which convets Hosts names into IP and IP into hostname.
Such as when you write
www.hotmail.com. This goes to a primary DNS and this is coverted to appropriate IP
To find ip of some machine.Open termianla and write IFCONFIG.
To do parallel procseeing first of all you will have to configure DNS and install a Cluster Management System(CMS).
So it is a difficukt task.
You can have a CMS
from
oscar.sourceforge.net
Any further question.You can ask