" nodesktop" probably reference Xserver settings,
"nodisplay" is probably for headless servers (ones that you ssh into).
If your working in a tty (a terminal that can't or hasn't created a desktop environment and is connected to the cluster)they wont work.
The ampersand, however is always good.
By the way, a cluster related question on your first try?
That's pretty rare.
Welcome to Linux questions
Last edited by dijetlo; 03-21-2015 at 02:33 AM.