Torture Test error

2003-11-28, 07:07

k i was running prime 95 torture test: Blend and i left it and went to someone's house,came back and found this,
Self Test 10K Passed!
Test 1, 4500 Lucas-Lehmer iterations of M17432577 using 896 FFT length
Test 2 4500 Lucas Lehmer iterations of M17462575 using 896K FFT length.
Test 3 4500 Lucas Lehmer Iterations of M17115076 using 896 FFt Length
FATAL ERROR: Rounding was 0.5 les then expected 0.4,
Hardware failure detected, consult stress. TXT file/
Torture test ran 1hr, 3min- 1 error,0 warnings
Execution halted

Is this something major, how do i fix it and what does it mean

Please help and respond

GP2 · 2003-11-28, 08:44

Prime95 stresses a computer more than average programs do. In this case, a problem has been found with your hardware, even though it might work adequately for most other programs.

You might want to try running the program Memtest86 to see if your computer's memory might be a source of problems. You might want to try running it again with the computer's case open, to see if overheating was the problem.

In general though, unless you can find and fix the problem with your computer's hardware, you won't be able to run Prime95 successfully.

TauCeti · 2003-11-28, 08:51

in addition to GP2s advice: if you have overclocked your computer you may consider to undo or lessen the overclock and then test prime95 again...

edorajh · 2003-11-28, 09:19

I was in the same situation when started with GIMPS. Thanks to Prime95 I detect error on my hardware (it was memory error) and fix it. Now Prime95 nicely run on my machine, plus it doesn't crash as it was previously. So, I don't think there are much other DC projects that can help you detect your hardware errors. Nice bonus to all the fun in searching MErsenne primes.

2004-03-05, 21:31

For some reasion, when I run Prime95 (version 23.8.1) on my Athlon 2500+ Barton Core CPU with PC 2700 DDR (256MB) and Windows 2000 Professional, when I do the torture test with anything larger than 8K FFT's, it would fail with errors such as:
-Rounding was larger than expected x.xxxxxx than 0.4
-Unexpected result x.xxxxxxx instead of x.xxxxxxx

Anyone can shed any light on this?

Uncwilly · 2004-03-05, 23:31

Two issues that commonly come up are cooling and bad memory sticks. These 2 issues seem to pop up repeatedly. Prime95 will get your CPU as hot as any program can. Memory that can't keep up also is a problem at times.

dsouza123 · 2004-03-06, 07:13

It is unlikely but possible that something (sound, video driver)
is changing the the default precision control or rounding mode of the FPU (x87).

Have you tried the stress test with an earlier version of Prime95 ?

Have you tried the stress test in Windows Safe Mode ?
If it is drivers, in safe mode it may use different ones that don't modify FPU settings.

Dresdenboy · 2004-03-11, 09:16

Quote:

Originally Posted by Unregistered

For some reasion, when I run Prime95 (version 23.8.1) on my Athlon 2500+ Barton Core CPU with PC 2700 DDR (256MB) and Windows 2000 Professional, when I do the torture test with anything larger than 8K FFT's, it would fail with errors such as:
-Rounding was larger than expected x.xxxxxx than 0.4
-Unexpected result x.xxxxxxx instead of x.xxxxxxx

Anyone can shed any light on this?

The 8K FFT surely runs inside the CPU cache and is very likely independend from memory. So it seems the CPU works OK. Try slower RAM timings and maybe another tool like memtest.

2004-03-13, 05:58

Quote:

Originally Posted by Unregistered

For some reasion, when I run Prime95 (version 23.8.1) on my Athlon 2500+ Barton Core CPU with PC 2700 DDR (256MB) and Windows 2000 Professional, when I do the torture test with anything larger than 8K FFT's, it would fail with errors such as:
-Rounding was larger than expected x.xxxxxx than 0.4
-Unexpected result x.xxxxxxx instead of x.xxxxxxx

Anyone can shed any light on this?

Hi everyone
I am having this exact same error message with a:

athlon 2500xp(not overclocked)
MSI K7N2 delta L
256 mb pc3200DDR and 256 pc2700ddr(mismatched sticks single channel mode)
120gig wd hd
pny GeForcefx 5200
winXPpro
350w CG psu

2004-03-13, 16:16

In my experience, the memory does not always auto configure itself correctly. For example, my Corsair Xtreme PC2700 can up as
(CAS 2.5) 3-6-6-2-2.
After checking the manufacturer website, I determined that it should actually be
(CAS 2.0) 2-7-7-3-3

After manually changing the setting in the advanced bios options at boot, the machine became stable, even after overclocking.

2004-07-05, 12:11

hi all, just wanna ask how to activate the torture test...its inactive (greyed out) in the options menu. please advise...

2003-11-28, 07:07	#1
Unregistered 2·2,843 Posts	Torture Test error k i was running prime 95 torture test: Blend and i left it and went to someone's house,came back and found this, Self Test 10K Passed! Test 1, 4500 Lucas-Lehmer iterations of M17432577 using 896 FFT length Test 2 4500 Lucas Lehmer iterations of M17462575 using 896K FFT length. Test 3 4500 Lucas Lehmer Iterations of M17115076 using 896 FFt Length FATAL ERROR: Rounding was 0.5 les then expected 0.4, Hardware failure detected, consult stress. TXT file/ Torture test ran 1hr, 3min- 1 error,0 warnings Execution halted Is this something major, how do i fix it and what does it mean Please help and respond

2004-03-05, 21:31	#5
Unregistered 2·1,759 Posts	Prime95 Puking on Stress test with FFT > 8K (Athlon 2500+Barton & PC2700DDR) For some reasion, when I run Prime95 (version 23.8.1) on my Athlon 2500+ Barton Core CPU with PC 2700 DDR (256MB) and Windows 2000 Professional, when I do the torture test with anything larger than 8K FFT's, it would fail with errors such as: -Rounding was larger than expected x.xxxxxx than 0.4 -Unexpected result x.xxxxxxx instead of x.xxxxxxx Anyone can shed any light on this?

2004-03-13, 16:16	#10
Unregistered 83×113 Posts	memeory errors In my experience, the memory does not always auto configure itself correctly. For example, my Corsair Xtreme PC2700 can up as (CAS 2.5) 3-6-6-2-2. After checking the manufacturer website, I determined that it should actually be (CAS 2.0) 2-7-7-3-3 After manually changing the setting in the advanced bios options at boot, the machine became stable, even after overclocking.

2004-07-05, 12:11	#11
Unregistered 6885₁₀ Posts	prime95 torture test hi all, just wanna ask how to activate the torture test...its inactive (greyed out) in the options menu. please advise...

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2003-11-28, 08:44	#2
GP2 Sep 2003 2583₁₀ Posts	Prime95 stresses a computer more than average programs do. In this case, a problem has been found with your hardware, even though it might work adequately for most other programs. You might want to try running the program Memtest86 to see if your computer's memory might be a source of problems. You might want to try running it again with the computer's case open, to see if overheating was the problem. In general though, unless you can find and fix the problem with your computer's hardware, you won't be able to run Prime95 successfully.

2003-11-28, 08:51	#3
TauCeti Mar 2003 Braunschweig, Germany E2₁₆ Posts	in addition to GP2s advice: if you have overclocked your computer you may consider to undo or lessen the overclock and then test prime95 again...

2003-11-28, 09:19	#4
edorajh Oct 2003 Croatia 1C8₁₆ Posts	I was in the same situation when started with GIMPS. Thanks to Prime95 I detect error on my hardware (it was memory error) and fix it. Now Prime95 nicely run on my machine, plus it doesn't crash as it was previously. So, I don't think there are much other DC projects that can help you detect your hardware errors. Nice bonus to all the fun in searching MErsenne primes.

2004-03-05, 23:31	#6
Uncwilly 6809 > 6502 """"""""""""""""""" Aug 2003 101×103 Posts 10010010001000₂ Posts	Two issues that commonly come up are cooling and bad memory sticks. These 2 issues seem to pop up repeatedly. Prime95 will get your CPU as hot as any program can. Memory that can't keep up also is a problem at times.

2004-03-06, 07:13	#7
dsouza123 Sep 2002 2×331 Posts	It is unlikely but possible that something (sound, video driver) is changing the the default precision control or rounding mode of the FPU (x87). Have you tried the stress test with an earlier version of Prime95 ? Have you tried the stress test in Windows Safe Mode ? If it is drivers, in safe mode it may use different ones that don't modify FPU settings.