Limit to 1 GPU?

Author	Message
Dean Hilkewich Send message Joined: 14 Oct 08 Posts: 1 Credit: 0 RAC: 0 Level Scientific publications	Message 3047 - Posted: 14 Oct 2008, 23:30:26 UTC Last modified: 14 Oct 2008, 23:31:00 UTC Is there a way to limit what cuda capable GPUs are being used? I have 2 cuda capable cards and I just want the second card to be used for analysis. Using both makes my linux desktop a bit choppy. Details: opensuse 11 2 x 8800GT's Phenom 9850 ID: 3047 · Rating: 0 · rate: / Reply Quote

koschi Send message Joined: 14 Aug 08 Posts: 127 Credit: 913,858,161 RAC: 18 Level Scientific publications	Message 3048 - Posted: 15 Oct 2008, 3:14:47 UTC I don't think this is possible at this moment :-( My desktop experience (especially videos and musik) was also quiet choppy when I started two months ago. But it got better over the time. I'm using the Ubuntu Intrepid beta, so there are a lot of improvements coming in every day and hence I can't name what improved my desktop performance. Right now I'm running PS3GRID on a 8800GTS, Kernel 2.6.27, Nvidia driver 177.80, BOINC 6.3.14 and of course the PS3GRID app 6.47. All together the desktop responds fast again, no lags in music playback and only very few when playing videos. Maybe you can update these core components of your system, or upgrade directly to openSuse 11.1 beta 2 Might help... ID: 3048 · Rating: 0 · rate: / Reply Quote

GDF Volunteer moderator Project administrator Project developer Project tester Volunteer developer Volunteer tester Project scientist Send message Joined: 14 Mar 07 Posts: 1958 Credit: 629,356 RAC: 0 Level Scientific publications	Message 3049 - Posted: 15 Oct 2008, 8:20:00 UTC - in response to Message 3048. In principle, I believe that it should use always device 0, but I am not sure. Please finish few workunits, using only ONE GPUGRID WU at the time, so that we can test. If that's the case you might be able to attach the display to the second card. gdf ID: 3049 · Rating: 0 · rate: / Reply Quote

[SETI.USA]Tank_Master Send message Joined: 8 Jul 07 Posts: 85 Credit: 67,463,387 RAC: 0 Level Scientific publications	Message 3055 - Posted: 15 Oct 2008, 15:23:52 UTC you could try to stop BOINC, then enable SLI, then restart BOINC, that way BOINC will see only one GPU... ID: 3055 · Rating: 0 · rate: / Reply Quote

Krunchin-Keith [USA] Send message Joined: 17 May 07 Posts: 512 Credit: 111,288,061 RAC: 0 Level Scientific publications	Message 3065 - Posted: 15 Oct 2008, 20:12:02 UTC Last modified: 15 Oct 2008, 20:15:05 UTC Currently you can only do this by limiting CPUs to 1 as Max CPUs in your preferences, of course that means running no other boinc tasks. I have made suggestions we need separate limits for GPUs. Also requested was a way to specify which GPU in multi-GPU systems to use. I'm still not sure if that is possible, but it will be investigated. It has been noted and these may be a future enhancement. ID: 3065 · Rating: 0 · rate: / Reply Quote