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(Assistance Requested) Going from 4 threads to 6 doubles PPD

post #1 of 6
Thread Starter 
This is really weird.

I fold 24/7 on a 2600k and a pair of GTX 480's. The 480's are at 825core and the 2600k is at stock.

In order to get my work done, I need at least four threads free on the 2600k. Thus, I set advanced control in the folding software to only use 4 threads in the CPU and push both GPUs full power.

With the GTX 480's running full steam ahead and 4 threads of the 2600k, I average about 35-40k PPD.

When I go to 6 threads on the 2600k, my PPD jumps to 75k or more. eek.gif

What gives? I'd love to commit those next two threads to folding, but it makes the large number of apps I run for work unstable.

Any ideas?
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Heisenberg
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post #2 of 6

That's a bit odd actually. I know the extra 2 threads add the PPD to your total, but that's rather drastic for only an additional 2 threads. 24/7 folding huh? You should join the Team Competition!

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post #3 of 6
Thread Starter 
Quote:
Originally Posted by BWG View Post

That's a bit odd actually. I know the extra 2 threads add the PPD to your total, but that's rather drastic for only an additional 2 threads. 24/7 folding huh? You should join the Team Competition!

Haha, thanks! I've been hunting through stability issues and eventually narrowed it down to the 4 vs 6 threads issue. Here's a screenshot to show the dramatic difference in PPD.

Heisenberg
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post #4 of 6
It could also be the work units folded during those times combined with the extra threads.
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Lanboy Air
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post #5 of 6
Thread Starter 
Quote:
Originally Posted by BWG View Post

It could also be the work units folded during those times combined with the extra threads.

So you think it might just be intricacies of when individual WU's drop?
Heisenberg
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Redemption
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Heisenberg
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Redemption
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Replaced with 42 W/hr aux battery Mint 17.3 1280x800 Dell 65w Dell Adapter 
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Not telling AsRock something Pixel Pusher 2 x 8 GB AMD Radeon RAM @ 1600mhz (All the VM's) 
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CPUMotherboardGraphicsRAM
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post #6 of 6
Quote:
Originally Posted by coachmark2 View Post

Quote:
Originally Posted by BWG View Post

It could also be the work units folded during those times combined with the extra threads.

So you think it might just be intricacies of when individual WU's drop?

Very probably, you should run longer (say a week at least) with one config to see what the avg. will be.
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Frigg d.y.
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