mersenneforum.org Team sieve #21: c162 from 4788:2602
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2010-12-14, 19:58   #1
jrk

May 2008

1,093 Posts
aq4788,2602 c162 poly

Quote:
 Originally Posted by bchaffin Finished the c147, and added about 10 more terms -- happily, ecm found 45- and 48-digit factors. Now at term 2602, still with 2^4, and a c162. I've run 3400 curves at 11M so far. I'll leave it running for a few days, but if ecm doesn't come through this will probably be the end of my solo drive.
Time for another team job. After a lot of heavy lifting from bchaffin, 4788 has stalled on a c162.

A lot of sieving will be done by RSALS, but if you have some spare cycles, every little bit helps...
Quote:
 Originally Posted by jrk In case it becomes a GNFS job, here is a poly for the c162: Code: n: 201662644625726223965504252321039229795541434802496056546534987125943330407091389007249091194783132977342010346522074086728121107031532400663175295605381304978591 # norm 1.037974e-15 alpha -8.491231 e 1.135e-12 rroots 3 skew: 11670747.10 c0: -58098198798717019126014055711399549989735 c1: -11019918536209930229435557980670531 c2: 2131349269924959161803770145 c3: 100289713633328138483 c4: -10690842992178 c5: 551880 Y0: -12958548897691078082274705009044 Y1: 1627296609596924339 rlim: 45000000 alim: 45000000 lpbr: 29 lpba: 30 mfbr: 58 mfba: 60 rlambda: 2.5 alambda: 2.5 Sieve specialq on algebraic side from 20M to 90M with siever 14e. Aim for about 84M raw relations.
Post-processing will be done by Batalov.
28 Dec 2010 Post-processing started, ETA 29 Dec 2010
30 Dec 2010 Post-processing complete! c162 = p63 * p100

Reservations:
Code:
20M - 50M   RSALS
50M - 80M   RSALS
80M - 90M   RSALS
90M - 95M   RSALS
95M -100M   RSALS
Relations so far: 78M

Last fiddled with by Mini-Geek on 2010-12-30 at 15:16 Reason: update

 2010-12-18, 09:56 #2 debrouxl     Sep 2009 977 Posts The poly posted by jrk yields ~1.4 relation per q value over a range of 1000 q values starting at (r&a)lim/2. For a 30-bit large primes task, on average, RSALS clients can sieve the bulk of a range of 30-40M q values, split in WUs of 10K q values, in 3-4 days.
2010-12-18, 16:20   #3
schickel

"Frank <^>"
Dec 2004
CDP Janesville

2×1,049 Posts

Quote:
 Originally Posted by debrouxl The poly posted by jrk yields ~1.4 relation per q value over a range of 1000 q values starting at (r&a)lim/2. For a 30-bit large primes task, on average, RSALS clients can sieve the bulk of a range of 30-40M q values, split in WUs of 10K q values, in 3-4 days.
Will you also be able to handle the post-processing?

 2010-12-18, 21:14 #4 debrouxl     Sep 2009 977 Posts schickel: RSALS relies on external contributors to do the post-processing. Is there somebody interested in Aliquot sequences willing to do the job ? AFAICS, the best poly posted here so far was by jrk, indeed.
 2010-12-18, 21:24 #5 Batalov     "Serge" Mar 2008 Phi(4,2^7658614+1)/2 23×7×163 Posts Ok, count me in for finishing.
 2010-12-20, 11:40 #6 debrouxl     Sep 2009 3D116 Posts Reserving 50M-80M for the RSALS grid At the current rate of crunching, I'll start "C162_4788_2602" by Wednesday.
 2010-12-21, 12:42 #7 Batalov     "Serge" Mar 2008 Phi(4,2^7658614+1)/2 23·7·163 Posts Pls send me a PM when needed, because I may not notice/follow specific threads. (But I'll receive a PM for sure.)
 2010-12-21, 18:06 #8 debrouxl     Sep 2009 97710 Posts I've just added "C162_4788_2602" to the RSALS work generation infrastructure. For now, WUs will be generated from q=50M to 80M.
 2010-12-22, 07:41 #9 debrouxl     Sep 2009 17218 Posts At the time of this writing, nearly 5/6 of the 50M-80M range have been distributed to clients, with more than 1/5 of the corresponding results returned, yielding ~6M raw relations. I'm therefore expanding the RSALS reservation to 80M-90M
2010-12-22, 08:21   #10
schickel

"Frank <^>"
Dec 2004
CDP Janesville

209810 Posts

Quote:
 Originally Posted by debrouxl Reserving 50M-80M for the RSALS grid At the current rate of crunching, I'll start "C162_4788_2602" by Wednesday.
Quote:
 Originally Posted by debrouxl I've just added "C162_4788_2602" to the RSALS work generation infrastructure. For now, WUs will be generated from q=50M to 80M.
Quote:
 Originally Posted by debrouxl At the time of this writing, nearly 5/6 of the 50M-80M range have been distributed to clients, with more than 1/5 of the corresponding results returned, yielding ~6M raw relations. I'm therefore expanding the RSALS reservation to 80M-90M
So, do we need a thread for this job to co-ordinate other contributors, or will RSALS be able to do it all?

2010-12-22, 09:11   #11
10metreh

Nov 2008

2×33×43 Posts

Quote:
 Originally Posted by schickel So, do we need a thread for this job to co-ordinate other contributors, or will RSALS be able to do it all?
20M-90M will probably be enough, so if RSALS are willing to do it all, that's fine.

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