glx problem with tesla

Hi , i have a node with 4 tesla c1060 but no other real graphic card (matrox g200 on motherboard).
So when i’m try to run coeanFFT i have glx error and i don’t find the glx module (modprobe glx doesn’t wotk)
I think it’s normal but maybe they are an other solution or i must buy a graphic card for display?