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VMWare + uBuntu 7.04 = 1800 PPD! - Page 4

post #31 of 42
Quote:
Originally Posted by Burn View Post
Working another core, 2609, doing ~1655 PPD. Still, not too shabby. I think a bump to 3Ghz would do me well
I wonder what your PPD will be on extremeocing folding stats site. Ive been getting 1760's, then 1385's. alternating back and forth. My PPD has topped out at 1565 over the past few days, putting me at #19 on OCN top producers, but after half a day my PPD go to like 1300, then they go back up after i finish another WU. I just wish i kept getting those 1760pt WUs instead of those 1385s that take even longer. I get 11min/frame on the 2605s. 16min/frame on 2609s, and im at 3.4ghz. From 3.0ghz to 3.4ghz there hasnt been a big decrease in folding time. Its more noticeable in other apps for me. I just installed FahMon during this 2609 WU and it says 1400 PPD. I wonder what it will say for the 2605. I am on Ubuntu btw. Its the only Linux distro that would install right and not freeze due to my OC. Im on native Ubuntu.
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post #32 of 42
Quote:
Originally Posted by Lude View Post
I wonder what your PPD will be on extremeocing folding stats site. Ive been getting 1760's, then 1385's. alternating back and forth. My PPD has topped out at 1565 over the past few days, putting me at #19 on OCN top producers, but after half a day my PPD go to like 1300, then they go back up after i finish another WU. I just wish i kept getting those 1760pt WUs instead of those 1385s that take even longer. I get 11min/frame on the 2605s. 16min/frame on 2609s, and im at 3.4ghz. From 3.0ghz to 3.4ghz there hasnt been a big decrease in folding time. Its more noticeable in other apps for me. I just installed FahMon during this 2609 WU and it says 1400 PPD. I wonder what it will say for the 2605. I am on Ubuntu btw. Its the only Linux distro that would install right and not freeze due to my OC. Im on native Ubuntu.
About your jump from 3.0 GHz to 3.4 GHz and it's diminishing returns. The complexity of folding, and especially SMP folding, goes far beyond just your overall MHz on your processor. Like any program you run on your computer, folding runs into bottlenecks.

What makes SMP folding fun is that those bottlenecks can change from WU to WU, depending on the type you are working on. The bottlenecks include CPU speed (architecture, FSB, multiplier), Memory (bandwidth, timing, type), OS (Windows, Linux, VMWare, OSX), at high enough speeds the Folding Client itself may become a bottleneck. There are others such as internal loopback speed and latency, and probably even I have not even thought of yet.

As you increase performance on a particular component of folding, what was once a bottleneck may go away. This in turn exposes the next bottleneck in line. Finding and overcoming the second and third layers of bottleneck can be challenging as they are usually inter-related. Examples of this are increasing you FSB increases you processor speed, as well as your memory speed. Tighter timing may allow for lower latency, but reduce overall bandwidth.

Basically, as you start to see diminished returns on part of you overclock, try bumping up something else to see if that improves the folding even more.

The best part is, once you figure out how to maximize performance on a particular type of WU, another comes along and runs poorly because of sacrifices you made on some settings in order to push others higher.

The best folding overclock is usually an overclock that finds a good balance between the bottlenecks to show an overall increase over the long term.
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post #33 of 42
Thread Starter 
Okay, got a 2605 and my PPD jumped back up to 1863 Pretty excited. I think it mainly has to do with memory speed, this is the fastest I've ever run my memory while my CPU has run faster in ages past.
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post #34 of 42
Thread Starter 
Just to make this thread even more mundane- Finished that core a while ago, and moved onto a 2605, PPD stays at 1861. Knitelife, any progress with the distro tests?
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post #35 of 42
I have finished 4 distros in VMWare, and 2 native tests. I have just been busy with the holiday weekend so have not posted yet since I needed to do some graphs and such. I will get some results put up tonight.
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post #36 of 42
Thread Starter 
That's awesome, you're making great progress! I think everyone has been real busy with the holidays, so no worries, whenever you have the time
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post #37 of 42
I ran the tests on my E6600 since VMWare can only use 2 cores and I wanted to be able to compare numbers between VMWare and Native as well. I did however run one test on a quad to see how it would do. Since it will not be relevant to the other thread, I will post it here.
Quote:
Project : 2604
Core : Gromacs SMP
Frames : 100
Credit : 1760

-- UBUNTU NATIVE Q6600 --
Min. Time / Frame : 5mn 46s - 4394.91 ppd
Avg. Time / Frame : 5mn 47s - 4382.25 ppd
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post #38 of 42
Thread Starter 
Wow, I really want a G0 Q6600 now :\\ It would do well under the TEC!
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post #39 of 42
Quote:
Originally Posted by Burn View Post
Wow, I really want a G0 Q6600 now :\\ It would do well under the TEC!
I agree. For folding, the quads are definately the best bang for the buck because you can run 4 cpu cores without the added investment of second mobo, memory, psu, drives, etc...

I have a quad on the same mobo you have. My only non asus board, but I wanted to try out the selectable strap. I runs nicely at 9 X 375 on air cooling.
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post #40 of 42
Thread Starter 
Yeah, the selectable strap is really nice, but so too is the unlinking feature between the FSB/MEM speeds that ASUS has I have tried both (Striker Extreme and this board) and I think that the unlinked feature makes the board more appealing.
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