How to use integrated graphic card as video output and nvidia card as cuda processing unit?

Accelerated Computing CUDA CUDA Programming and Performance
1

I am using linux with nvidia card for cuda computing.

I set in BIOS to use the integrated card for video output
I am using CentOS 7 with GUI desktop
I installed cuda 6.5, with driver, but I can not enter the GUI anymore, it shows me an error message. Looks like something wrong with 'GLX'

I doubt the nvidia driver updated system settings to use nvidia card as main video output, but I don’t want to do this. So my questions are:

Do I have to install nvidia driver to run cuda programs? I am not planning to use nvidia card for video output.

If yes, how to configure these correctly to use the desktop GUI?
2

fedora uses x server; i suppose centos do too

if so, note your x server log for more detailed error messages

and examine your x server config (file) to see whether installing the nvidia driver has not updated the x server settings

on occasion, the drivers of different vendors clash - after a week i gave up trying to get my nvidia driver and onboard intel graphics driver to co-exist

and yes, you need the nvidia driver to drive your nvidia card, only if for cuda…

3

Typically one would install a software package like BumbleBee to take care of controlling the nVidia GPU.
Applications requiring the nVidia GPU for OpenGL or CUDA have to be run using a launcher utility called optirun. The main graphics stays on Intel.

This works for me on Ubuntu 12.04. It may be that the later Linux kernel revisions do things much differently.

4

Is this an optimus laptop? Or a desktop style motherboard with integrated graphics?

5

I am using deskdop with a GTX 760 card. Looks like there’s some conflicts with OpenGL. I installed nvidia driver in order to use cuda, but the driver also enabled some features for 3d processing. I installed the driver separately with ‘–no-opengl-files’ and now I can start X with native on-board video output. I can run cuda programs now but only the ones without opengl. I don’t use opengl, so in my case it’s ok