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Prime 95

post #1 of 6
Thread Starter 
Can anyone here truely say what the cause of an error message called illegal sumout in prime 95 means or is the cause.
    
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post #2 of 6
If it's failing then it's an unstable overclock.

C
post #3 of 6
Thread Starter 
Yes i understand that. But what i was wondering is if anyone can even give a clue besides your system is unstable, i have used prime for years, and to be honest, i have never found anyone any were who realy knows. You take rounding errors, any time i get them i have always been able to fix them by upping volts in ram or cpu/nb or loosen ram timings to a certain point of cource., but this pesky little illegal error, i have never been able to link to any one thing, and it is always random, i have even seen it happen to systems running 24/7 stable for months-than wham you run prime and it might pop up-run prime again and it might not.

P.S. And i know a few others over the years that it has happened to also, weird-unexplained thing i tell ya-lol.
Edited by fishhawk - 5/3/11 at 4:07pm
    
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post #4 of 6
Quote:
One property of FFT squaring is that:
(sum of the input FFT values)2 = (sum of the output IFFT values)

Since we are using floating point numbers we must change the "equals sign" above to "approximately equals". If the two values differ by a substantial amount, then you get a SUMINP != SUMOUT error as described in the readme.txt file. If the sum of the input FFT values is an illegal floating point value such as infinity, then you get an ILLEGAL SUMOUT error.
Found the above and further reading claims some running software may cause the error.
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post #5 of 6
Thread Starter 
Good job on finding that +1 rep for ya

It is atleast a point to start looking at, I am going to try and find at the least a possible fix one way or another this time. It is an error with prime that for years i have never seen even a maybe fix on, even a lot of other computers gurus (wich i am not-lol) on forums have never had an answer.
    
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post #6 of 6
I had this problem and was caused by unstable overclocks causing some programs or services to be unstable...
Just like above guy said.
I fixed it just pumping a bit more of Voltage in my Cores..
Good luck!
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