Dual 5870's

[coronicus]

Would love to have an answer to this for sure... I know somewere i read something about the AMD opencl driver or app locking a thread and for the life of me cannot find were i read that but ill keep looking. I would play with dif version of the drivers but dont wanna take down the box atm.

On a dif note I did finally figure out lasso and could get the two cards working on one core with hyperthreading and at first it was keeping the GPU @98%+ workload.. Turned on the logs and went to bed after a night of login I had work unit that stayed at 98% all the way through then other WU all over the place even tho no other proccess touched those cores. makes me go hummmmm....

[Philadelphia]

Would love to have an answer to this for sure... I know somewere i read something about the AMD opencl driver or app locking a thread and for the life of me cannot find were i read that but ill keep looking. I would play with dif version of the drivers but dont wanna take down the box atm.

On a dif note I did finally figure out lasso and could get the two cards working on one core with hyperthreading and at first it was keeping the GPU @98%+ workload.. Turned on the logs and went to bed after a night of login I had work unit that stayed at 98% all the way through then other WU all over the place even tho no other proccess touched those cores. makes me go hummmmm....

Yeah, I'd love an answer too, I'll have to go over to Moo and see if there are any more responses, 1 so far, it was more of an observation.

Glad you figured yours out

[Philadelphia]

I posted the following this morning at the Moo message board:

I 'think' I figured out what the problem with Moo was/is. Kidding on the 'I', even a blind squirrel can find an acorn.

I had booted/rebooted/booted/rebooted started boinc/stopped boinc/restarted/stopped it, etc, changed as many settings as carter has pills.

I had about 3 days worth of WU's to crunch and set the project to no new downloads.

I'm sure you could tell from some of my posts I was frustrated as hell.

In spite of my better judgement, I decided to 'allow new tasks', received 1 download, suddenly, instead of running two tasks it was running one task (running 0.05 cpu's + 2.00 ATI GPU's (device 0)) Before it was running 2 tasks with +1.00 gpu (device 0) and another (device 1)

It's still crunching the cpu but the run time is way down, I 'think', to something reasonable. If I can get more WU's I'll get a better idea.

My question (not to anyone in particular) is why did 'allowing new tasks' suddenly tell the computer to run one work unit instead of two and use both gpu's to do it, when stopping/starting BOINC didn't, even when it involved setting changes????

[edit] I ran about 20 WU's since and everything is fine, what a strange situation. Maybe the project guru has input?

[Duke of Buckingham]

Moo Duke

[coronicus]

Im glad your having a moo-better time..

[Philadelphia]

Thanks, it was crazy for several day.

[Mike029]

No let's watch those puppies, err cows throw some stones. Make sure you wear the appropriate safety equipment.

[STE\/E]

It's still crunching the cpu but the run time is way down, I 'think', to something reasonable. If I can get more WU's I'll get a better idea.

Looked at your Box again at the Project, still way to slow, your times are 1500+ Seconds when they should be 800-900 Seconds for a Dual 5870 Setup. Some guys are even getting sub 800 Second times ... My single 5870 Box runs the Wu's in the 1600-1700 second Range, not much slower than your Dual 5870 Setup so there's still something wrong I think ...

What CPU Project/Projects are you running, sometimes the choice of CPU Project can adversely affect the GPU Project your running ...

[Philadelphia]

Looked at your Box again at the Project, still way to slow, your times are 1500+ Seconds when they should be 800-900 Seconds for a Dual 5870 Setup. Some guys are even getting sub 800 Second times ... My single 5870 Box runs the Wu's in the 1600-1700 second Range, not much slower than your Dual 5870 Setup so there's still something wrong I think ...

What CPU Project/Projects are you running, sometimes the choice of CPU Project can adversely affect the GPU Project your running ...

Yeah, Conan mentioned that also at the Moo message boards, I looked at his and the numbers you mention are what he's getting.

I'm not running any projects that use a cpu, only gpu projects.

So, I'm at a loss again to what is happening.

Do both gpu's need to have the same clock/over clock settings?

Dan/Philly

[STE\/E]

Do both gpu's need to have the same clock/over clock settings?

Dan/Philly

Yes, if both cards are 5870's then they both should be clocked the same, use the settings Tab on Afterburner & set to Sync the 2 GPU's.

Also set the line "UnofficialClockMode = 0' to "UnofficialClockMode = 1" and restart Afterburner once doing that. Just go to either Windows/Program Files or Windows/Program Files (x86) then open the MSI Afterburner folder, then open the config file with notebook and make the 0 to 1 change, save & exit. You'll have to Restart Afterburner again once doing that too ... Should be good to go then and you can make your Overclocking changes ...