simulations of ads in distributed system

Hello, dear friends.
I want to use the capability of ADS 2014 known as distributed computing and remote simulation to speed up the process of my simulations...
I see the help, and see about ssh and pvm,,
I do installinstallation of ssh in two of systems that I have remote access to them.
And I can add one system to another system as host02.
But when simulation, it send error of timed out.
Do I need to install or setup pvm?
Please help me.
Thanks to all.

Is the pvm by default installed, or I must set some settings or install anythings about it (pvm)?