Linear algebra reservations, progress and results - Page 145

pinhodecarlos · 2016-11-24, 09:38

I'll take C194_142_70 next.

swellman · 2016-11-24, 13:12

I must abandon my reservation for 150^122+122^150 cofactor. I had put this on the back burner for a while, then honestly forgot about it for a bit. Since "rediscovering" my reservation I've spent days trying to get this into LA - to no avail. The memory on my biggest baddest machine seems to have degraded (guessing) and I can't process this number.

Planning to experiment with a few of the easier 32-bit jobs, but I from now on I won't reserve a NFS@Home factorization until I've successfully downloaded it and made it into LA.

pinhodecarlos · 2016-11-25, 06:19

With regards to 8-7_305 please read this:

http://www.mersenneforum.org/showpos...&postcount=133

pinhodecarlos · 2016-11-25, 06:43

Release C194_142_70, I don't have machine to run this 32 bits tasks.

unconnected · 2016-11-25, 12:42

C169_3366_2156 completed - 68 hours for 8.9M matrix (TD=140).

Code:

prp77 factor: 25641422047868541686986107525186596561936623541345083157292277889617899142993
prp93 factor: 236987675809269531923788288063277096288560787567038249028484779323136113755266916583339154863

http://pastebin.com/kd8vPCqt

C229_148_70 completed - 31 hours for 6.2M matrix (TD=150).

Code:

prp59 factor: 31341865988592334418593864986093727905704570129434258989293
prp68 factor: 69427046440186584592164280112833479826741033494349863350321991599569
prp103 factor: 1038282752331259626425572544634440815688452884099890210062246681711726738973404015157301258187856223461

http://pastebin.com/UaQJMdWi

jyb · 2016-11-26, 18:13

Code:

p51 factor: 297202845182863447345374726482649007673631788341481
p186 factor: 970553391576387434074331675298844842908403605335927176431147146123005272518243346310346847152873192974135025815202444672862587723955494504862775228821614081191765437121091590734210514727

Log: http://pastebin.com/0QxTm8Fw

This is a pretty bad ECM miss. This number should have had more than a t55, which would make missing a p51 very unlikely.

pinhodecarlos · 2016-11-26, 18:32

Trying C196_137_66 (14e).
8-7_305 needs more sieving per http://www.mersenneforum.org/showpos...&postcount=133

swellman · 2016-11-26, 19:19

Quote:

Originally Posted by jyb

Code:

p51 factor: 297202845182863447345374726482649007673631788341481
p186 factor: 970553391576387434074331675298844842908403605335927176431147146123005272518243346310346847152873192974135025815202444672862587723955494504862775228821614081191765437121091590734210514727

Log: http://pastebin.com/0QxTm8Fw

This is a pretty bad ECM miss. This number should have had more than a t55, which would make missing a p51 very unlikely.

It sustained a full t55 by yoyo@Home. An ECM miss, and an unfortunate one, but are you suggesting a SNFS 251 should have a partial t60 run prior to NFS?

jyb · 2016-11-27, 00:09

Quote:

Originally Posted by swellman

It sustained a full t55 by yoyo@Home. An ECM miss, and an unfortunate one, but are you suggesting a SNFS 251 should have a partial t60 run prior to NFS?

Well that's a good question. The answer depends on whom you ask. If you follow the standard 2/9 rule for a composite with SNFS difficulty 253.05, then yes, it should have more than just a t55. OTOH, there are threads on this forum where that topic has been debated, with Bob Silverman in particular favoring earlier commencement of NFS. (Though he never articulated any better actual guideline than the 2/9 rule.)

I'll point out that even with just a t55, there's less than a 1% chance that the p51 factor would not have been found. So mostly my comment was intended as a query to verify that this really did receive the ECM work that it deserved.

fivemack · 2016-11-27, 00:38

Code:

Sat Nov 26 18:55:26 2016  p133 factor: 6543705328400180561577911640580975478076882049636590514144600269097437013273310299121836093980225911815544821116466542927850009998397
Sat Nov 26 18:55:26 2016  p139 factor: 3693792848093521850768683089919709265366228631806734580057526850215427168910019282185675375281048261775975004394791990644572376727424390683

1254 hours on 48 cores K10/1900 (2x4 grid of 6-thread jobs, on a single four-socket machine) for a 42.8M matrix at density 136; ETA at start was 834 hours, so I'm not sure why it took quite so long, I'd expected it to be done by Thanksgiving.

Log attached and at http://pastebin.com/SGJee32t

fivemack · 2016-11-27, 00:39

Taking on swellman's reservation for C277_150_122; anticipating this will be another eight-week job.

2016-11-26, 18:13	#1590
jyb Aug 2005 Seattle, WA 3346₈ Posts	C237_127_93 (15e) factored. Code: p51 factor: 297202845182863447345374726482649007673631788341481 p186 factor: 970553391576387434074331675298844842908403605335927176431147146123005272518243346310346847152873192974135025815202444672862587723955494504862775228821614081191765437121091590734210514727 Log: http://pastebin.com/0QxTm8Fw This is a pretty bad ECM miss. This number should have had more than a t55, which would make missing a p51 very unlikely. Last fiddled with by jyb on 2016-11-26 at 18:19

2016-11-26, 18:32	#1591
pinhodecarlos "Carlos Pinho" Oct 2011 Milton Keynes, UK 3·17·97 Posts	Trying C196_137_66 (14e). 8-7_305 needs more sieving per http://www.mersenneforum.org/showpos...&postcount=133 Last fiddled with by pinhodecarlos on 2016-11-26 at 18:50

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2016-11-24, 09:38	#1585
pinhodecarlos "Carlos Pinho" Oct 2011 Milton Keynes, UK 3×17×97 Posts	I'll take C194_142_70 next.

2016-11-24, 13:12	#1586
swellman Jun 2012 3,089 Posts	I must abandon my reservation for 150^122+122^150 cofactor. I had put this on the back burner for a while, then honestly forgot about it for a bit. Since "rediscovering" my reservation I've spent days trying to get this into LA - to no avail. The memory on my biggest baddest machine seems to have degraded (guessing) and I can't process this number. Planning to experiment with a few of the easier 32-bit jobs, but I from now on I won't reserve a NFS@Home factorization until I've successfully downloaded it and made it into LA.

2016-11-25, 06:19	#1587
pinhodecarlos "Carlos Pinho" Oct 2011 Milton Keynes, UK 1001101010011₂ Posts	With regards to 8-7_305 please read this: http://www.mersenneforum.org/showpos...&postcount=133

2016-11-25, 06:43	#1588
pinhodecarlos "Carlos Pinho" Oct 2011 Milton Keynes, UK 3×17×97 Posts	Release C194_142_70, I don't have machine to run this 32 bits tasks.

2016-11-27, 00:39	#1595
fivemack (loop (#_fork)) Feb 2006 Cambridge, England 14427₈ Posts	Taking on swellman's reservation for C277_150_122; anticipating this will be another eight-week job.