Prime95 v25.5 Runs Stable, but Super Pi v1.5 32M Test Fails in Vista !!! [Solution Inside]

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Q

QuadFusion

Member
Dec 15, 2007
29
0
0
ADDED LATER.........................................................


Problem:
Overclock stable in Prime95 v25.5 for 12+ hours, but fails Super Pi v1.5 32M Test (even at stock settings) in Windows Vista !!!


Solution:

The windows vista services that affect Super Pi are,

1) Windows Audio Service (this for sure)
2) Themes
3) Aeroglass Interface

By turning these off, I was able to run and complete Super Pi v1.5 32M test.


1) To turn off Windows Audio Service ( start> run> services.msc, find Windows Audio on the list , double click and stop it ) Turning off "Windows Audio Endpoint Builder" is not necessary unless you encounter problem.

2) To turn off Themes ( start> run> services.msc, find Themes on the list , double click and stop it ) this will also make you turn off tune up theme extension.

3) Aeroglass automatically turns off by turning of themes. (you can check it by right clicking on desktop>Personalize>Window Color and Appearance>Color Scheme )



Another way to disable/enable Audio service:

Create two .bat files on the desktop

SoundOff.bat:
net stop "AudioSrv"

and

SoundOn.bat:
net start "AudioSrv"



I found that it is not necessary to run the program as an administrator or Windows XP SP2 Compatibility mode.


I also found a Super PI front-end called Hyper PI
The author claims it is pure Super PI 1.5 MOD XS and it is customized for multi-core CPU's: " Run multiple instances of SPI (one for each processor) and configure the priority of the process easily (without Task Manager). Take a snapshot of all instances at anytime with only one click!"



Download Locationhttp://home.pages.at/virgilioborges/
I personally wasn't able to download it becasue of some server problem.

Here's a Screenshot for the program
Hyper Pi 0.9bhttp://home.pages.at/virgilioborges/imgs/hyper_pi.png



Note:
"If you can't get the Hyper Pi program, and want to run multiple instances of Super Pi for your Dual or Quad Core, then run the exe from different folders. For example, if you want four instances of Super Pi to load Quad Core, then make four separate folders, copy the exe into each, and run from each folder. Because if you run the same SuperPI exe to load twice (from the same icon) the initial data is overwritten by the "second running instance." Therefore, what was correct for the first core, or HT in your case, is now being overwritten with the second core's info and it throws out an error "Not convergent in SQR05". There's a little .dat file that's keeping all of the data"






ORIGINAL POST..................................................................................


I have an overclocked Q6600 (3.0ghz, 9x333) on Asus P5k deluxe (0603)
It ran stable on Prime95 v25.5 (4 threads 100% load, small fft for more than 12hours)
But fails just one instance (approx 25 % load) of Super Pi v1.5 32M test
It completed 16K, 32K, 64K, 128K, 256K, 512K, 1M, 2M, 4M

16K: completed in 00.179s
4M: completed in 1m 37.124s
8M: failed after 3m 19.413s Loop 21
16M: failed 5m 41.531s Loop17
32M: failed in 6m 18.938s Loop9
All of them one instance runs, and also times vary slightly for different runs..

Memory: 4 x 1 gb Crucial Ballistix Tracer 800mhz (4-4-4-12) FSB>DRAM, 5:6 (333:400)
Os: Vista Ulimate 32bit (3.3gb Ram)
PSU : Rosewell 750W
Load: 56c, Idle: 38c (Zalman 9700NT)
Vcore: Bios: 1.3125v
Vcore Idle: 1.2480v
Vcore Load: 1.2320v

Is my system stable since it passes Prime95 (4Threads 100%) ?
Why is it failing just one instance of Super Pi v1.5 @ 25%load ???






 
Q

QuadFusion

Member
Dec 15, 2007
29
0
0
Also to note:
Round off was selected on Prime95...& I ran the small ffts test
But priority was set to 1.. From another forum i got the suggestion to set the priority to "10"
Should I run again with Worker thread priority 10 ???
 
Q

QuadFusion

Member
Dec 15, 2007
29
0
0
Finally found the solution !!!
I ran Super Pi 32M under stock settings, however it failed. This lead me to think that it was rather a OS/Program issue than a stable overclock issue. So I started searching for Vista Super Pi issues.


The windows vista services that affect Super Pi are,

1) Windows Audio Service (this for sure)
2) Themes
3) Aeroglass Interface

By turning these off, I was able to run and complete Super Pi v1.5 32M test.

1) To turn off Windows Audio Service ( start> run> services.msc, find Windows Audio on the list , double click and stop it ) Turning off "Windows Audio Endpoint Builder" is not necessary unless you encounter problem.

2) To turn off Themes ( start> run> services.msc, find Themes on the list , double click and stop it ) this will also make you turn off tune up theme extension.

3) Aeroglass automatically turns off by turning of themes. (you can check it by right clicking on desktop>Personalize>Window Color and Appearance>Color Scheme )


Another way to disable Audio service:
Create two .bat files on the desktop

SoundOff.bat:
net stop "AudioSrv"

and

SoundOn.bat:
net start "AudioSrv"


I found that it is not necessary to run the program as an administrator or Windows XP SP2 Compatibility mode. But I tried both ways, it works.


I also found a Super PI front-end called Hyper PI
The author claims it is pure Super PI 1.5 MOD XS and it is customized for multi-core CPU's: " Run multiple instances of SPI (one for each processor) and configure the priority of the process easily (without Task Manager). Take a snapshot of all instances at anytime with only one click!"


I personally wasn't able to download it becasue of some server problem.
http://home.pages.at/virgilioborges/


Here's a Screenshot for the programhttp://home.pages.at/virgilioborges/imgs/hyper_pi.png



Note:
"If you can't get the hyper Pi program, and want to run multiple instances of Super Pi for your Dual or Quad Core, then run the exe from different folders. For example, if you want four instances of Super Pi to load Quad Core, then make four separate folders, copy the exe into each, and run from each folder. Because if you run the same SuperPI exe to load twice (from the same icon) the initial data is overwritten by the "second running instance." Therefore, what was correct for the first core, or HT in your case, is now being overwritten with the second core's info and it throws out an error "Not convergent in SQR05". There's a little .dat file that's keeping all of the data"





So I now declare that my Overclock is stable !!!
 
I

Idontcare

Elite Member
Oct 10, 1999
21,110
59
91
Great job here debugging the issue, both isolation as well as providing a solution. Top notch.

This really needs to be captured and incorporated into John's sitcky in the CPU forum for future reference by AT readers.

Consider PM'ing John (in case your threads falls off the page before he sees it) and talking with him about it.

Glad to see you resolved your issue.
 
Q

QuadFusion

Member
Dec 15, 2007
29
0
0
Thanks. It is good to put all the information together in one place.
Even though I didn't get any response for my problem from this forum (late night), I got some response in other forums that were outrageous. Some one suggested that I disable the round off check in Prime95 so that my computer will calculate properly and not round figures. I was disappointed because these people claim to run their Quad Cores above 3.8ghz, and they check stability by running "heat tests" which they claim to be stability tests.
That's why I wanted to post the clear detailed solution to this problem, so people won't get mislead searching for information here and there.

Cheers !!!
 
I

Idontcare

Elite Member
Oct 10, 1999
21,110
59
91
LMAO at the "checking for rounding errors = less accuracy because you are rounding".

Only one place in the universe has the stupidity density of earth, and we aren't going to give up the title without a fight!

Don't worry about folks running 3.8GHz in unstable fashion. They get what is coming to them as time goes on and they get more and more irritated with the seemingly random reboots and system instability. "My 3.8GHz overclock is rock stable, but freaken windows keeps crashing, sh!tty programmers, grrrr!"
 
Q

QuadFusion

Member
Dec 15, 2007
29
0
0
BTW the guy who made that claim came back and admitted he was wrong after I posted the link to GraySky's overclocking guide. So I guess he didn't know what he was doing and was going around giving false advice to others !!!
 
E

Ephemeral

Member
Dec 4, 2004
129
0
0
Huge thumbs up, I just built a quad and went to 3.0 as well, and super-pi was failing 4M (Vista 64). I couldn't find anything to point me in the right direction, but now I know its Prime and Pi stable, nice work!
 
Q

QuadFusion

Member
Dec 15, 2007
29
0
0
Good to know that I could help. I was also lost, but when I figured it isn't an OC problem, I knew it was Mr. Vista !!!
Yeah 3.0 is good initial milestone. My plan is to get up to 3.6 eventually, but I'm going to run at 3.0 for a while.
 
VirtualLarry

VirtualLarry

No Lifer
Aug 25, 2001
56,570
10,202
126
So, does this problem occur at stock speeds? I hate Vista, but I'm still loath to proclaim a widespread bug in Vista, as the OP appears to be claiming. We need some solid proof of this, why aren't all Vista users having trouble with SuperPI?

Perhaps it's just me, but after looking at your Vcore, I'd say boost it a bit.
 
J

John

Moderator Emeritus<br>Elite Member
Oct 9, 1999
33,944
1
0
FWIW I removed all SuperPI references from the sticky several months ago. However the OP is more than welcome to post a new reply linking to this thread.
 
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