Error Codes?

Antonio · 2011-09-23, 22:39

I have been P-1 testing for a while now on two computers. Occasionally, when Prime95 sends in the results they have an "E=6" in the message.
(example snippet:
M52610771 completed P-1, B1=615000, B2=16297500, E=6, We10: ....)
This has happened on both computers.
Does this mean an error has occurred while the code was running?
If so what sort of error, is there a list of error codes and their meaning?

Mini-Geek · 2011-09-24, 00:26

It's not an error code, it means your P-1 tests used the Brent-Suyama extension, which essentially throws in some extra primes besides those bounded by B1 and B2 for "free" (i.e. little to no extra work). It's done when enough memory is available, and slightly increases the chances of finding a factor.
http://www.mersenneforum.org/showthread.php?t=7031
http://www.mersenneforum.org/showthread.php?t=12335

Antonio · 2011-09-24, 01:13

Thanks for that, I tried a search of the forum using "E=" without success before posting without result.
Good to know my machines are not generating errors though. :)

Uncwilly · 2011-09-24, 01:23

Quote:

Originally Posted by Antonio

Thanks for that, I tried a search of the forum using "E=" without success before posting without result.

The search function doesn't like certain things.

Xyzzy · 2011-09-24, 02:08

http://www.mersenneforum.org/showthread.php?t=15556

Dubslow · 2011-09-27, 06:07

How much memory does it need? Does this occur often? (I have 12 GB, of which generally no more than 2 are used at a time (in the options I have it set to 5-6 GB))

Xyzzy · 2011-09-27, 13:20

Using 10GiB we get "E=12" almost every time. (The other times are "E=6".)

2011-09-23, 22:39	#1
Antonio "Antonio Key" Sep 2011 UK 3²·59 Posts	Error Codes? I have been P-1 testing for a while now on two computers. Occasionally, when Prime95 sends in the results they have an "E=6" in the message. (example snippet: M52610771 completed P-1, B1=615000, B2=16297500, E=6, We10: ....) This has happened on both computers. Does this mean an error has occurred while the code was running? If so what sort of error, is there a list of error codes and their meaning?

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2011-09-24, 00:26	#2
Mini-Geek Account Deleted "Tim Sorbera" Aug 2006 San Antonio, TX USA 17×251 Posts	It's not an error code, it means your P-1 tests used the Brent-Suyama extension, which essentially throws in some extra primes besides those bounded by B1 and B2 for "free" (i.e. little to no extra work). It's done when enough memory is available, and slightly increases the chances of finding a factor. http://www.mersenneforum.org/showthread.php?t=7031 http://www.mersenneforum.org/showthread.php?t=12335

2011-09-24, 01:13	#3
Antonio "Antonio Key" Sep 2011 UK 213₁₆ Posts	Thanks for that, I tried a search of the forum using "E=" without success before posting without result. Good to know my machines are not generating errors though. :)

2011-09-24, 02:08	#5
Xyzzy "Mike" Aug 2002 7940₁₀ Posts	http://www.mersenneforum.org/showthread.php?t=15556

2011-09-27, 06:07	#6
Dubslow Basketry That Evening! "Bunslow the Bold" Jun 2011 40<A<43 -89<O<-88 3·29·83 Posts	How much memory does it need? Does this occur often? (I have 12 GB, of which generally no more than 2 are used at a time (in the options I have it set to 5-6 GB))

2011-09-27, 13:20	#7
Xyzzy "Mike" Aug 2002 2²·5·397 Posts	Using 10GiB we get "E=12" almost every time. (The other times are "E=6".)