Does anybody here succeded in running the display exclusively on the IGP allowing the PCIe video card(s) to run exclusively GPGPU applications? On all the hardware I met the IGP gets disabled once a PCIe card is inserted or the add-in card becomes invisible if IGP is enabled. It would be nice to have display tasks decoupled from GPGPU crunching - no more "computing error" or display gone nuts. I tried once with IGP disabled and display allocated to an ATI 16MB PCI card but was not very happy (8600GTS was present in device manager but not in display manager).

To summarize:

1 - what chipset allow IGP display even if a PCIe video card is present. Is this related with the allocation policies of PCIe lanes?

2 - (if there are some) what manufacturer implemented this facility in hardware and let the user decide in BIOS

3 - what about compatibilities: nVidia cards on AMD motherboards, ATi on nVidia or any of them on Intel motherbords.

4 - how to install nVidia CUDA driver WITHOUT installing nVidia display driver? BTW I experienced "no CUDA device found. exit install" if a CUDA PCIe card was present (together a PCI card) but not as primary display. Must I plug a dummy display connector (which I dont have) into the video output of the CUDA exclusive PCIe card to fool it?

As long as TESLA exists the solution exist. But what is it? I need a platform with 1-2-3 GPGPU PCIe cards and keep the display duties exclusively for the IGP.

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