Forum > GPU crunching

How do you use two cuda cards in one computer?

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tony7201:
I have two card in one box and I am getting this message.

NVIDIA GPU 0: GeForce GT 220 (driver version 26089, CUDA version 3020, compute capability 1.2, 987MB, 131 GFLOPS peak)
NVIDIA GPU 1 (not used): GeForce 8400 GS (driver version 26089, CUDA version 3020, compute capability 1.1, 244MB, 15 GFLOPS peak)

How do I get both card crunching?

Claggy:
make a cc_config.xml file with the following in it, drop the file in your Boinc Data directory (which is likely to be hidden), and restart Boinc:


--- Code: ---<cc_config>
  <options> 
        <use_all_gpus>1</use_all_gpus>
  </options>
</cc_config>
--- End code ---

Claggy

Fredericx51:
In some (or most)cases, f.i. WIN XP64/32, you have to Extend your Desktop by using a 2nd monitor or use a Dummy Load.
Don't know, how this works in VISTA or WIN 7.

Fredericx51:
Found an interresting article , about
VLIW's (Very Long Words Instruction). It's about ATI graphic cards and their Architecture
and how to Program these "Multi Core"  'pieces' ,  so you can run 1 or more 'streams',
together.

(A bit) off topic, though, but IMO it's a valuable and usefull (for a lot of us),
 some actually seem to understand these 'differences' v.s. CPU's

Ghost0210:

--- Quote from: Fredericx51 on 20 Oct 2010, 09:14:20 am ---In some (or most)cases, f.i. WIN XP64/32, you have to Extend your Desktop by using a 2nd monitor or use a Dummy Load.
Don't know, how this works in VISTA or WIN 7.



--- End quote ---

This shouldn't be needed anymore with the latest drivers (think from around the 258.xx series)
I had both my 240 and 260 (both now retired) running on Win7 without a dummy plug or a second monitor

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