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IvyBridge Xeons: folding performance - Page 2

post #11 of 17
Thread Starter 
Quote:
Originally Posted by arvidab View Post

I think he meant, like, 1600 CL7 vs 2133 CL10. BA likes memory bandwidth, with normal SMP folding there wasn't much difference between running 1333 CL9 or 2133 CL10 on my 2500K. Idk how these -E (and BA) parts react, but my 2500K liked the freq more than timings.

What's the all-core turbo on those 2697, Andy?
Arvidab,
thanks for the clarification on #1.

On #2:
It is 3 GHz
In the previous generation, I used the E5-2687W, as this wase the highest perf parts in the lineup.
WIth the IB Xeons, there was for some time the rumors that the 150 watt E5-2687Wv2 would be a 10c design. Unfortunately, it is only a 8c chip and even with the relatively higher frequency, based on the spec its throughput wasn't anymore the top CPU. Don't understand Intel product positioning on this part and went for the 12 core 2697v2 instead.

rgds,
Andy
post #12 of 17
I was looking at your fahdiag that you posted over at [H] and saw that you were running a GUI. Do you normally do that while folding or just to record this paste? The GUI seems to be using about 5% of your CPUs which isn't much but every little bit counts. And just out of curiosity, what version of Ubuntu are you running?
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post #13 of 17
Thread Starter 
The GUI doesn't take 5% in the average. Was probably just a spike the diag utility recorded.
I installed Ubuntu 12.04 LTS as described over at the [H] guides. No further customization.

The system is now in its 3rdWU (P8103).

TPF (avg of first 56%): 8m41s
According to the bonus calculator this equates to 679.000 ppd for a P8103 project.
(6% OC would get us to 8m10s and 744.000 ppd for P8103 ) Not bad for a 2P system ..
post #14 of 17
That is awesome. Especially considering the power usage of that thing.
 
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post #15 of 17
Quote:
Originally Posted by AndyE View Post

The GUI doesn't take 5% in the average. Was probably just a spike the diag utility recorded.
I installed Ubuntu 12.04 LTS as described over at the [H] guides. No further customization.

The system is now in its 3rdWU (P8103).

TPF (avg of first 56%): 8m41s
According to the bonus calculator this equates to 679.000 ppd for a P8103 project.
(6% OC would get us to 8m10s and 744.000 ppd for P8103 ) Not bad for a 2P system ..

Have you considered updating to a newer kernel? I found about a 3-4% improvement in ppd switching from kernel 3.2 (the one in 12.04) to 3.8 (the one in 13.04). Also, I've found the most efficient OS to be the server version of Ubuntu. It only installs the bare necessities and only a CLI so you have no wasted resources. If you're looking to completely streamline your folding rigs and maximize your ppd, I would look into it.
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post #16 of 17
Yeah, I think the ECC and timings prolly on that RAM are slowing you down. I thought RAM didn't impact folding (since a4 on my i7 didn't see any benefits). On my E5-2665 system it's massive though (I even notice it in rendering). NUMA is another factor.
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post #17 of 17
Quote:
Originally Posted by TheBlademaster01 View Post

Yeah, I think the ECC and timings prolly on that RAM are slowing you down. I thought RAM didn't impact folding (since a4 on my i7 didn't see any benefits). On my E5-2665 system it's massive though (I even notice it in rendering). NUMA is another factor.

BA is highly dependent on memory bandwidth. From the good ol' days with 2500K/2700K up to a 4P. Iirc I shaved off 0:30-1 min on P8101 going from 1333 CL9 to 1600 CL8 on my 4P G34.

Don't know if you should aim for speed or latency on IV-E, would guess speed though.
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