OpenSuse JEOS Qt

Hi,

I am working on Intel Atom N450 and openSuse JEOS is running on it.I just want to open Qt application on the board but actually it doesnt work.

I first loaded helloworld app it worked but when I tried to open GUI application like calculator with "./calculator -qws" it returns "calculator: cannot connect to X server".
OpenSuse "uname -a" "Linux pcm3362 3.11.10-7-default #1 SMP Mon Feb 3 09:41:24 UTC 2014 (750023e) i686 i686 i386 GNU/Linux"

Not: I use Ubuntu 14.04 and I installed qt everywhere 4.8.6 and ubuntu "uname -a" "Linux ubuntu 3.13.0-24-generic #46-Ubuntu SMP Thu Apr 10 19:08:14 UTC 2014 i686 i686 i686 GNU/Linux".

Do I need cross-compile from pc to Atom board* , I thougt both machines are Intel I dont need ,isnt it* ,

Pls help me .
Thanks,
Umit