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-   -   P-1 factoring anyone? (https://www.mersenneforum.org/showthread.php?t=11101)

flashjh 2012-03-13 00:03

[QUOTE=Dubslow;292805]I would try one that doesn't require Brent-Suyama. The extension is kinda funny when it comes to the math, and it doesn't necessarily check every potential k under a given bound, otherwise we wouldn't bother with E and just call it a higher B2. I wouldn't be surprised at all if the different bounds did in fact play a part in what E=12 can find. I would run a S2 on a factor which can in fact be found without E (e.g. [URL="http://mersenne-aries.sili.net/exponent.php?exponentdetails=49197853"]this one[/URL] or most any other on the GPU272 top factors report), and if that factor is found, then rerun this E=12 test with exactly the same bounds as I had (reported on Mersenne-aries).[/QUOTE]

I already started it again with your exact settings. If that doesn't work I'll run one that doesn't require BS that this system did find before. That way I'll know it worked before. I just can't imagine out of all the #s this system has run that it hasn't found another S-2 yet.

Dubslow 2012-03-13 00:13

Chance and probability are fickle things, as this three year drought can attest to. :razz:

flashjh 2012-03-13 00:17

[QUOTE=Dubslow;292805]I would try one that doesn't require Brent-Suyama. The extension is kinda funny when it comes to the math, and it doesn't necessarily check every potential k under a given bound, otherwise we wouldn't bother with E and just call it a higher B2. I wouldn't be surprised at all if the different bounds did in fact play a part in what E=12 can find. I would run a S2 on a factor which can in fact be found without E (e.g. [URL="http://mersenne-aries.sili.net/exponent.php?exponentdetails=49197853"]this one[/URL] or most any other on the GPU272 top factors report), and if that factor is found, then rerun this E=12 test with exactly the same bounds as I had (reported on Mersenne-aries).[/QUOTE]

BTW - Did you run [URL="http://mersenne-aries.sili.net/exponent.php?exponentdetails=49197853"][COLOR=#0066cc]this one[/COLOR][/URL]? What was your B1 B2?

Dubslow 2012-03-13 00:37

1 Attachment(s)
[QUOTE=flashjh;292812]BTW - Did you run [URL="http://mersenne-aries.sili.net/exponent.php?exponentdetails=49197853"][COLOR=#0066cc]this one[/COLOR][/URL]?[/QUOTE]
Yes. In this case the bounds shouldn't matter (no BS) but I'll upload the results file, check again.

@James: Your site doesn't recognize the E value when a factor is found, see attached.
Edit: That factor was credited as TF.
[url]http://mersenne-aries.sili.net/exponent.php?exponentdetails=49197853[/url]
Edit2: While I'm on the topic, when people submit old TF results, instead of putting in a new date (like for P-1 or LL results) it keeps the old "unknown" result, as well as the uploaded result. For example, on the above exponent, you can see Bdot's factoring runs are all duplicated.
Edit3: It also occurs to me that it would be nice to see if a P-1 run required the BS extension to find the factor, i.e. having some sort of flag on the page that says "BS extension used (E=*)". This will only be useful for any later factors found, but it would still be nice.


flash, the bounds are

P-1 found a factor in stage #2, B1=475000, B2=9500000, E=6.
UID: Dubslow/Gravemind, M49197853 has a factor: 3907182061566328992465817

James Heinrich 2012-03-13 00:40

[QUOTE=Dubslow;292813]Your site doesn't recognize the E value when a factor is found, see attached.[/QUOTE]Yes, I saw you try that.
What version of Prime95 are you using that does that? Or did you just add that manually?

Dubslow 2012-03-13 00:43

[QUOTE=James Heinrich;292814]Yes, I saw you try that.
What version of Prime95 are you using that does that? Or did you just add that manually?[/QUOTE]

George added the E value in 27.4. (I've also edited the above post.)

flashjh 2012-03-13 01:17

[QUOTE=Dubslow;292813]Yes. In this case the bounds shouldn't matter (no BS) but I'll upload the results file, check again.

@James: Your site doesn't recognize the E value when a factor is found, see attached.
Edit: That factor was credited as TF.
[url]http://mersenne-aries.sili.net/exponent.php?exponentdetails=49197853[/url]
Edit2: While I'm on the topic, when people submit old TF results, instead of putting in a new date (like for P-1 or LL results) it keeps the old "unknown" result, as well as the uploaded result. For example, on the above exponent, you can see Bdot's factoring runs are all duplicated.
Edit3: It also occurs to me that it would be nice to see if a P-1 run required the BS extension to find the factor, i.e. having some sort of flag on the page that says "BS extension used (E=*)". This will only be useful for any later factors found, but it would still be nice.


flash, the bounds are

P-1 found a factor in stage #2, B1=475000, B2=9500000, E=6.
UID: Dubslow/Gravemind, M49197853 has a factor: 3907182061566328992465817[/QUOTE]

Thanks

Prime95 2012-03-13 01:20

[QUOTE=flashjh;292804]I replaced the UDIMM memory with RDIMM ECC memory on the KGPE-D16 QVL.[/QUOTE]

Have you run a torture test for 24 hours?

James Heinrich 2012-03-13 01:23

[QUOTE=Dubslow;292813]@James:
Edit:
Edit2:
Edit3:[/QUOTE]Hmm, seems there's a few things that have become broken I need to look into. :ermm:

[QUOTE=Dubslow;292815]George added the E value in 27.4. (I've also edited the above post.)[/QUOTE]Didn't now .4 was out. Now that's added to Prime95, I've also added it to my site. I need to sanitize the existing data per your above-noted comments, but future result submissions should accept the E=__.

flashjh 2012-03-13 04:16

[QUOTE=Prime95;292817]Have you run a torture test for 24 hours?[/QUOTE]

No :blush:, only memtest86+. I was having so many restarts due to bad memory that once the memory passed I didn't think I needed another full torture test... once the current P-1 completes, I'll run one.

Edit: BTW - on the UDIMM memory, the system wouldn't even pass a basic blend test. I did run a few custom 32-core blend tests and everything passed on RDIMM.

flashjh 2012-03-13 17:19

[QUOTE=flashjh;292808]I already started it again with your exact settings. If that doesn't work I'll run one that doesn't require BS that this system did find before. That way I'll know it worked before. I just can't imagine out of all the #s this system has run that it hasn't found another S-2 yet.[/QUOTE]
It didn't find BS factor with Dubslow's settings...

[QUOTE=Prime95;292817]Have you run a torture test for 24 hours?[/QUOTE]

Test is running now...


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