GPU processing w/both Nvidia AND Radeon?

Message boards : Number crunching : GPU processing w/both Nvidia AND Radeon?
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Neil L. Carter Project Donor
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Message 1484262 - Posted: 4 Mar 2014, 1:40:38 UTC
Last modified: 4 Mar 2014, 1:41:06 UTC

Greetings:

Please tell me if I'm crazy.

I just built a new system with an Nvidia GTX670 and still have my old Radeon HD5750. The question is, since I'm actually using the Nvidia card for my video AND GPU processing for SETI, is it insane to think about plugging in the Radeon card and using it just for GPU processing? Or, is this inviting disaster, mixing the two in the same PC?

If it's not insane, can anyone provide advice or suggestions on the approach?

Thanks!
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Message 1484279 - Posted: 4 Mar 2014, 2:21:41 UTC

You are not crazy. A few people have done it. It is somewhat pain in the a$$ though.
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Message 1484295 - Posted: 4 Mar 2014, 4:11:08 UTC

Basically, make certain that you install the Nvidia drivers first and then the AMD drivers.

I at one time had a GTX560 and a HD7750 in my gaming machine, eventually I went completely Nvidia as it does better here on SETI.

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Message 1484372 - Posted: 4 Mar 2014, 10:13:19 UTC - in response to Message 1484295.  

Basically, make certain that you install the Nvidia drivers first and then the AMD drivers.

I at one time had a GTX560 and a HD7750 in my gaming machine, eventually I went completely Nvidia as it does better here on SETI.

I have had a 9800GTX+ and a HD5700 for a while, then a GTX460 and the HD5700, after that it has been the GTX460 and a HD7770, recently the GTX460 starting having screen corruption and reboots so I've removed it while i source something else.

For the 2nd GPU you'll need to connect a monitor, a dummy plug, or extend the desktop onto the 2nd GPU.

Because of the task limits in place, to ensure both GPUs receive work you'll need to set a small cache size, otherwise the faster GPU will receive all the work,
for my GTX460 & HD7770 combination it was 0.7 days, when there is large amount of shorties going out then it lowers to around 0.5 days,
you'll need to probably go a little lower.

Claggy
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Neil L. Carter Project Donor
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Message 1485344 - Posted: 6 Mar 2014, 15:53:57 UTC

Thanks to all!!
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Message boards : Number crunching : GPU processing w/both Nvidia AND Radeon?


 
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