Disabling 3D graphics on Tesla C2050 when using display output

Is there a way to disable 3D graphics when using the display output on the Tesla C2050? I’m trying to avoid a situation where 3D graphics and CUDA apps are competing for resources, particularly by accident. It seems like with the new, concise xorg.conf files everything is enabled by default and no matter what options I try to use everything gets enabled as shown by the glxinfo command.