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 Post subject: mprime23 warnings
PostPosted: Tue Jan 19, 2010 8:02 am 
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Joined: Wed Oct 28, 2009 8:52 am
Posts: 10
Error: Illegal SUMOUT
Possible hardware failure, consult readme.txt file, restarting test.
Error: Illegal SUMOUT
Maximum Number of warnings exceeded.
Torture Test ran 7 hours, 25 mins - 0 errors, 100 warnings.

This error
Quote:
Error: Illegal SUMOUT
Possible hardware failure, consult readme.txt file, restarting test.

gets looped 100 times and kills the test.

Question: where is this readme file located and does it contain more specific information about this warning?

Thanks

Tim

O yea if this is a question that should be directed to another forum let me know.


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 Post subject:
PostPosted: Tue Jan 19, 2010 12:18 pm 
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Joined: Fri Jan 11, 2008 2:52 pm
Posts: 1278
You can download the readme from the mprime, by downloading mprime from: http://www.mersenne.org/freesoft/
Code:
POSSIBLE HARDWARE FAILURE
-------------------------

If the message "Possible hardware failure, consult the readme file."
appears in the results.txt file, then prime95's error-checking has
detected a problem.  After waiting 5 minutes, the program will continue
testing from the last save file.

Could it be a software problem?  If the error is ILLEGAL SUMOUT and you are
running Windows 95/98/Me, then there is some chance that this is a software
problem.  A device driver or VxD may not be saving and restoring FPU state
correctly.  Windows NT/2000/XP/Vista protects prime95 from bad device drivers.
In that case ILLEGAL SUMOUT is very likely a true hardware error. The good news
is that prime95 recovers very well from ILLEGAL SUMOUT errors.  Try seeing
if the problem occurs only when a specific device is active or a specific
program is running.

The other two errors messages, SUMINP != SUMOUT and ROUND OFF > 0.40 are
caused by one of two things:
   1)  For reasons too complicated to go into here, the program's error
   checking is not   perfect.  Some errors can be missed and some correct
   results flagged as an error.  If you get the message "Disregard last
   error..." upon continuing from the last save file, then you may have
   found the rare case where a good result was flagged as an error.
   2)  A true hardware error.

If you do not get the "Disregard last error..." message or this happens
more than once, then your machine is a good candidate for a torture test.
See the stress.txt file for more information.

Running the program on a computer with hardware problems may produce
incorrect results.  This won't hurt the GIMPS project since all results
will be double-checked.  However, you could be wasting your CPU time.
If you are getting several errors during each primality test, then I
recommend using your machine to factor Mersenne numbers or run one of
the many less strenuous distributed computing projects available.

Your CPU probably gets to hot when running at 100% for a long while (and will make errors).

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