X window problem

[Sijikumar S]

hi all,
I have installed  GrADS1.8SL11.Fedora on a intel xeaon machine, it
works fine on local terminal, but shows error like this while
executing from other nodes.

_X11TransSocketINETConnect: Can't get address for localhost
Error in GXSTRT: Unable to connect to X server

what is wrong with the installation.  Other programs requiring X
windows work fine in nodes

thanks
siji