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Maximize your SMP folding! 2 easy steps! - Page 2

post #11 of 39
Quote:
Are you running x2 SMP on a Vmware?
Yeah he is running VMware 2.0 + 2x instances of ARCH' linux distro with SMP edited in by Bal3Wolf.
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post #12 of 39
Quote:
Originally Posted by PhelanJKell View Post
Yeah he is running VMware 2.0 + 2x instances of ARCH' linux distro with SMP edited in by Bal3Wolf.
Thank you.

Do you know the average RAM usage? I want to switch to Linux folding for a while, but I never got to it.
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post #13 of 39
Thread Starter 
Quote:
Originally Posted by cognoscenti View Post
one problem...not everyones ram will run 3-3-3-8 2T

5 mins per % x 2 is pretty extreme folding and probably double what most in the world are folding at.
Yea, getting CAS 3 was stable was not easy. 1T(~5:00/%) command rate is stable in Memtest, but causes system hangs in XP for me. If I'm not mistaken 3-3-3-8 timings are fairly tight even at 667MHz and just above average at 533MHz.

Quote:
Originally Posted by TaiDinh View Post
Do you know the average RAM usage? I want to switch to Linux folding for a while, but I never got to it.
Roughly 200-300MB per client for VMware/arch.....more if you use other distros.

Quote:
Originally Posted by TaiDinh View Post
Windows SMP for me is faster with higher RAM speed over tighter timings.
Cyberdruid was running WINSMP with his 3.6GHz(400x9) quad with DDR 11xxMHz 5-5-5-18 and was getting around 13:00/%. After he adjusted to DDR 800MHz 4-4-4-12 his times went down to around 8-9 min/%.
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post #14 of 39
Quote:
Originally Posted by TaiDinh View Post
Thank you.

Do you know the average RAM usage? I want to switch to Linux folding for a while, but I never got to it.
I cant comment on VMware, but my RAM usage while folding in native Arch Linux is 550MB, and that is with a few other small things running as well. I set it to use 2gigs. IIRC VMware used a lot more ram.

Edit: Ravin beat me. Im going to see what my usage is with nothing else running.

Good post Ravin. Only thing that would be better would be native Arch Linux folding. I might try messing with my memory timings, never really have much.
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post #15 of 39
Thread Starter 
Quote:
Originally Posted by Lude View Post
Good post Ravin. Only thing that would be better would be native Arch Linux folding. I might try messing with my memory timings, never really have much.
Thanks. My next box will be dual 8-core nehalems running Solaris for dedicated folding only. ETA to build.....2 years. I need windows, and I figure this quad will still be plenty of oomph for an e-machine/office apps for many, many years to come.
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post #16 of 39
Quote:
Originally Posted by Ravin View Post
Yea, getting CAS 3 was stable was not easy. 1T(~5:00/%) command rate is stable in Memtest, but causes system hangs in XP for me. If I'm not mistaken 3-3-3-8 timings are fairly tight even at 667MHz and just above average at 533MHz.


Roughly 200-300MB per client for VMware/arch.....more if you use other distros.



Cyberdruid was running WINSMP with his 3.6GHz(400x9) quad with DDR 11xxMHz 5-5-5-18 and was getting around 13:00/%. After he adjusted to DDR 800MHz 4-4-4-12 his times went down to around 8-9 min/%.
That is interesting.

Let me go try going from 938MHz 5-5-5-15 to 736MHz with 4-4-4-12, and maybe 938MHz with 4-5-5-15/12
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post #17 of 39
Thread Starter 
Quote:
Originally Posted by TaiDinh View Post
That is interesting.

Let me go try going from 938MHz 5-5-5-15 to 736MHz with 4-4-4-12, and maybe 938MHz with 4-5-5-15/12
Someone over in the P5N-E SLI thread noted that they got better performance between DDR 800-850 speeds, and took a huge hit on latencies from 851-1150MHz. Early (revision 1 and 2) 965 express boards also experienced this phenomena....speculation is that between 850-1150MHz the MCH straps new latencies that don't show increased performance with even 200MHz increases on the FSB.

MCH strap latencies are definitely an issue with p945/p965/650i/and 680i boards. I have not seen data on the P35/x38/780i/790i MCH latencies.
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post #18 of 39
Yea, I can do 5-5-5-12 at 851 mhz with 2.2v. It's just not possible for me to boot without more voltage for 4-4-4-12 at 851 mhz mainly because I have 4 sticks. Maybe if I'd only use two I could get some really nice ram timings.
post #19 of 39
Yeah you are right on it being due to the strap changes or latency changes I should say.
The P35 doesnt have necessarily strap changes at a given fsb but for a given ram divider youll get different sets fo latency's. Its called performance level I think.

On some boards this is adjustable and on others it is not. The IP35pro sets the lowest possible from what I understand and it does a pretty good job.

I have tried keeping the same speed ram and just changed the timings from 4-4-4-12 to 3-3-3-8 both at around ddr 700 and I didnt see much of if any change at all but that was just me.

The greatest increase I saw was by using the affinity changer listed in another thread. I run two instances of smp in vista and am averaging 13min/% times two so basically 13min/2% on the 2653 unit. This is with a quad at about 3.2ghz. So I am now getting roughly two of the 2653wu's done every 21.6hrs which is really good I think.
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post #20 of 39
Thread Starter 
Quote:
Originally Posted by MADMAX22 View Post
Yeah you are right on it being due to the strap changes or latency changes I should say.
The P35 doesnt have necessarily strap changes at a given fsb but for a given ram divider youll get different sets fo latency's. Its called performance level I think.

On some boards this is adjustable and on others it is not. The IP35pro sets the lowest possible from what I understand and it does a pretty good job.

I have tried keeping the same speed ram and just changed the timings from 4-4-4-12 to 3-3-3-8 both at around ddr 700 and I didnt see much of if any change at all but that was just me.

The greatest increase I saw was by using the affinity changer listed in another thread. I run two instances of smp in vista and am averaging 13min/% times two so basically 13min/2% on the 2653 unit. This is with a quad at about 3.2ghz. So I am now getting roughly two of the 2653wu's done every 21.6hrs which is really good I think.
I just finised my 2 WUs and submitted, so I'm going to mess around a little more. I have some of those subtiming setting adjustments on my board.....Clock twister and Transaction booster I think..... Gonna try those out and see what happens.
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