Advanced search

Message boards : Graphics cards (GPUs) : Limit to 1 GPU?

Post to thread Subscribe Sort
Author Message
Dean Hilkewich
Send message
Joined: 14 Oct 08
Posts: 1
Credit: 0
RAC: 0
Level

Scientific publications
wat
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: Rate + / Rate - Report as offensive    Reply Quote
Profile koschi
Avatar
Send message
Joined: 14 Aug 08
Posts: 124
Credit: 792,979,198
RAC: 11,592
Level
Glu
Scientific publications
watwatwatwatwatwatwatwatwatwatwat
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: Rate + / Rate - Report as offensive    Reply Quote
Profile GDF
Volunteer moderator
Project administrator
Project developer
Project tester
Volunteer developer
Volunteer tester
Project scientist
Send message
Joined: 14 Mar 07
Posts: 1957
Credit: 629,356
RAC: 0
Level
Gly
Scientific publications
watwatwatwatwat
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: Rate + / Rate - Report as offensive    Reply Quote
Profile [SETI.USA]Tank_Master
Avatar
Send message
Joined: 8 Jul 07
Posts: 85
Credit: 67,463,387
RAC: 0
Level
Thr
Scientific publications
watwatwatwatwatwatwatwatwatwatwatwat
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: Rate + / Rate - Report as offensive    Reply Quote
Profile Krunchin-Keith [USA]
Avatar
Send message
Joined: 17 May 07
Posts: 512
Credit: 111,288,061
RAC: 0
Level
Cys
Scientific publications
watwatwatwatwatwatwatwatwatwatwatwatwatwatwat
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: Rate + / Rate - Report as offensive    Reply Quote
Post to thread

Message boards : Graphics cards (GPUs) : Limit to 1 GPU?

//