Forum > GPU crunching
BOINC 6.6.20 x64 does not run on 2 GPUs on Win 7
efmer (fred):
--- Quote from: jockmacmad on 31 May 2009, 06:34:44 pm ---There are 2 potential fixes for this and it's not just Windows 7 but x64 Vista as well.
There is a new command on BOINC in cc_config.xml to avoid the incorrect memory sizing on the second GPU or you can add LimitVideoPresentSources to the registry for th card. This stops the need for any dummy VGA adapter etc. The problem I had is due to Vista and Windows 7 only enabling the GPU if there is a device connected to the VGA/DVI port.
The xml to add to cc_config.xml is:-
<cc_config>
<options>
<use_all_gpus>1</use_all_gpus>
</options>
</cc_config>
cc_config.xml file definition is here.
Full solution for LimitVideoPresentSources is at the BOINC Forums
--- End quote ---
I did all that..(<use_all_gpus>1</use_all_gpus>, plugged in a monitor to the 2e screen, extended the desktop, even tried the registry) but no luck. The card works fine in XP.
n0xlf:
Also doesn't work for me - BOINC 6.6.36, NVidia 186.18 with 2 GTX280s...Only sees one...Worked fine under Vista 64 bit...
Raistmer:
If BOINC sees only 1 GPU report this on BOINC site (questions and problems forum).
Also it's worth to search nVidia's forums for known problems with Windows 7.
n0xlf:
If anyone stumbles on this post, the latest beta 190.38 NVidia drivers fix this issue -
http://www.nvidia.com/Download/Find.aspx?lang=en-us
efmer (fred):
--- Quote from: n0xlf on 19 Jul 2009, 01:52:18 am ---If anyone stumbles on this post, the latest beta 190.38 NVidia drivers fix this issue -
http://www.nvidia.com/Download/Find.aspx?lang=en-us
--- End quote ---
Yes this seems to work. I now See 2 cards on my 295.
But I still had to plug in a second screen.
What I only lack is work...
Navigation
[0] Message Index
[#] Next page
[*] Previous page
Go to full version