Linear algebra reservations, progress and results - Page 214

richs · 2017-12-28, 23:39

Quote:

Originally Posted by richs

Reserving C188_895087_37

Code:

p77 factor: 15069480837845540262035900496511146822212953461543999139030121185421643362999
p111 factor: 704591597088973828735015584213226374462826256163115480012704206565846550580938013499545453300004345359075857903

100.7 hours on 8 threads i7-5500U with 8 GB memory for a 8.85M matrix at TD = 70 (130 failed). Log attached and at https://pastebin.com/GgNKn3XG

Factors added to factordb.

RichD · 2017-12-31, 15:50

380M unique relations built a 21.6M matrix using TD=132.

Code:

p61 factor: 4591088858898100301845606320101256173147937084333524269153793
p197 factor: 24448078211795438040884095407903140908498478542546374253772878443871549907524508230349660743521411084402220170877608251100980094421709108854538363096954696642745701496190500432631826540842490188801

https://pastebin.com/2a08Xiez

Xyzzy · 2017-12-31, 16:07

We haven't done any post-processing work in a long time, but we have an idle dual-core NUC with 16GiB of memory so we figure we could put it to work.

Suggestions for a job for us to do would be appreciated. We are not bothered if the work takes an extra long time.

Thanks!

VBCurtis · 2017-12-31, 16:13

Quote:

Originally Posted by Xyzzy

We haven't done any post-processing work in a long time, but we have an idle dual-core NUC with 16GiB of memory so we figure we could put it to work.

Suggestions for a job for us to do would be appreciated. We are not bothered if the work takes an extra long time.

16GB is enough for all but the very-largest 15e jobs (which, on two cores, would take many months anyway). If you try some of the smaller 15e jobs (judged by size of Q-range, a very rough proxy for difficulty), you should spend less than a month on each job.

Xyzzy · 2017-12-31, 16:51

Reserved

VBCurtis · 2017-12-31, 20:21

Taking Fib(1469), a 15e GNFS task.

Fibonacci(1327) is a 26M beast, which will take about 3 more weeks on 6 cores of otherwise-idle i7.

Xyzzy · 2018-01-02, 20:07

Tue Jan 2 13:38:10 2018 linear algebra at 0.0%, ETA 922h48m

Xyzzy · 2018-01-03, 22:58

http://www.mersenneforum.org/showthread.php?p=476269

swellman · 2018-01-05, 19:21

C231_133_73 factored.

Code:

prp114 factor: 812450919179001106292194541769730923330167350085595520716004639099520059212342339039217462730232453883265524514363
prp117 factor: 892292896923199205025849560923177747231150389802158119568431849815999751051218108392321451617612432748904880734196703

259111412 raw relations / 199403192 unique

Built a 11300631 x 11300856 (5078.7 MB) matrix @TD=120. Edited log file attached.

swellman · 2018-01-05, 19:35

A few jobs listed as in process are done.

- C215_10695665473_23 was reported factored in post 2343

- C175 from term 10071 of aliquot sequence 11040 was apparently not reported but the factors are given in factordb as a p82*p94

- 147^53+53^147 cofactor (15e) was reported factored in post 2342.

fivemack: UPDATED

Xyzzy · 2018-01-06, 21:41

We are unable to complete this work.

No amount of fiddling with various parameters will allow this job to get more than 2% done in the "NC2" stage before it dies.

We hesitate to attempt other work until someone else tries this job. Either our method/computer/whatever is wrong or the data is bad.

2017-12-31, 16:51	#2348
Xyzzy "Mike" Aug 2002 5·17·97 Posts	C210 from 129^103+103^129 Reserved

2018-01-02, 20:07	#2350
Xyzzy "Mike" Aug 2002 5·17·97 Posts	C210 from 129^103+103^129 Tue Jan 2 13:38:10 2018 linear algebra at 0.0%, ETA 922h48m

2018-01-05, 19:35	#2353
swellman Jun 2012 11·281 Posts	A few jobs listed as in process are done. - C215_10695665473_23 was reported factored in post 2343 - C175 from term 10071 of aliquot sequence 11040 was apparently not reported but the factors are given in factordb as a p82p94 - 147^53+53^147 cofactor (15e) was reported factored in post 2342. fivemack: UPDATED* Last fiddled with by fivemack on 2018-01-06 at 09:58

2018-01-06, 21:41	#2354
Xyzzy "Mike" Aug 2002 10000000110101₂ Posts	C210 from 129^103+103^129 We are unable to complete this work. No amount of fiddling with various parameters will allow this job to get more than 2% done in the "NC2" stage before it dies. We hesitate to attempt other work until someone else tries this job. Either our method/computer/whatever is wrong or the data is bad.

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2017-12-31, 16:07	#2346
Xyzzy "Mike" Aug 2002 5·17·97 Posts	We haven't done any post-processing work in a long time, but we have an idle dual-core NUC with 16GiB of memory so we figure we could put it to work. Suggestions for a job for us to do would be appreciated. We are not bothered if the work takes an extra long time. Thanks!

2017-12-31, 20:21	#2349
VBCurtis "Curtis" Feb 2005 Riverside, CA 130A₁₆ Posts	Taking Fib(1469), a 15e GNFS task. Fibonacci(1327) is a 26M beast, which will take about 3 more weeks on 6 cores of otherwise-idle i7.

2018-01-03, 22:58	#2351
Xyzzy "Mike" Aug 2002 10000000110101₂ Posts	http://www.mersenneforum.org/showthread.php?p=476269