Fast Breeding (guru management)

[swellman]

Originally Posted by swellman

And another monster first reserved by Ryan Propper last summer that sort of faded away.

C282_140_137

It's another septic which survived a lot of ECM by Ryan before he started sieving. At last word, he did manage to build a matrix. Some wisdom from Batalov cautioning about the sqrt phase of a septic.

Ryan has returned to the forum. he dusted off the data file for C282_140_137, and currently has 500M+ relations. Suggest this candidate be removed from consideration for 15e.

[XYYXF]

Originally Posted by XYYXF

34k@260M has been done for С188_132_125. Some polys were provided:
http://www.mersenneforum.org/showpos...&postcount=578

t60 is 99% done. Perhaps it's ready to sieve :-)

[debrouxl]

I have queued the first half of the easier XYYXF composites posted by Sean in post #491, and the 5 first of 7 OP composites posted by William in post #492, to 14e.

I'd like to keep the other half of the XYYXF composites, and at least one large OP composite (3511^71-1 seems to be in 14e's range), to ease the pain of the upcoming "mine is bigger than yours" contest mentioned in another thread. This narrows down the set of 14e candidates available in this thread as of this writing a lot.
Therefore... who has other candidates for 14e ?

[unconnected]

Originally Posted by debrouxl

Therefore... who has other candidates for 14e ?

C168 from 11040:i9559

n: 341736554891942327816444538730992124740185626683149653700442959003930755894939219070925902628099243364200183698299582225389134343510418669588419047716621702332818278279
skew: 41653702.91
c0: -1147930816928261227146044820029343589428213
c1: 89302423062826164725601824735351484
c2: 6846626301133532103400105835
c3: -332066497483907818594
c4: -5034793620172
c5: 18960
Y0: -447889239216550365327794560922698
Y1: 148069194220898489
rlim: 55000000
alim: 55000000
lpbr: 31
lpba: 31
mfbr: 62
mfba: 62
rlambda: 2.6
alambda: 2.6

[debrouxl]

Thanks
I hope this will feed the grid until tomorrow morning...

Next up: the two composites from post #506.

[debrouxl]

Despite the high SNFS difficulty of 253.979, sieving 13^227-1 works well enough with 14e and 31-bit LPs: ~1 rel/q and ~0.35 sec/rel at q ~ 2^26 ~ rlim/2 = alim/2.
c6: 1, c0: -13 probably helps.
This should feed the grid for a day

[swellman]

Originally Posted by debrouxl

I have queued the first half of the easier XYYXF composites posted by Sean in post #491, and the 5 first of 7 OP composites posted by William in post #492, to 14e.

I'd like to keep the other half of the XYYXF composites, and at least one large OP composite (3511^71-1 seems to be in 14e's range), to ease the pain of the upcoming "mine is bigger than yours" contest mentioned in another thread. This narrows down the set of 14e candidates available in this thread as of this writing a lot.
Therefore... who has other candidates for 14e ?

Andrey has identified C215_121_81 as SNFS ready.

Also, C198_124_71, C203_130_102, C223_122_77 and C199_142_60 appear ready as well (I gave them a small burst of ECM @t55).

All xyyx composites, and of course we've done a lot of those lately, just something for the back of the queue/stockpile. Thanks.

[pinhodecarlos]

Not sure if this has been noticed but team Gridcoin more than double their output due to a new member called "UofS-Computer-Science" from Canada. Also some of their clients are joint members running for one name, like "pool.gridcoin.co" and "NeuralMiner". I suggest adding more work for all applications and take advantage of the available CPU power deployed to NFS@Home.

Carlos

[jyb]

Originally Posted by debrouxl

I have queued the first half of the easier XYYXF composites posted by Sean in post #491, and the 5 first of 7 OP composites posted by William in post #492, to 14e.

I'd like to keep the other half of the XYYXF composites, and at least one large OP composite (3511^71-1 seems to be in 14e's range), to ease the pain of the upcoming "mine is bigger than yours" contest mentioned in another thread. This narrows down the set of 14e candidates available in this thread as of this writing a lot.
Therefore... who has other candidates for 14e ?

As of now, the 14e queue has run dry. Is there any reason to keep holding back numbers that have been suggested? If so, I can supply a bunch more Homogeneous Cunninghams, but with the caveat that they won't have received as much ECM as you usually like. But it seems to me that it's better to run NFS on numbers which might have some relatively small factors (e.g. in the 50-digit range) than to just have resources sitting idle.

[debrouxl]

The original reason for postponing the numbers from posts #491 and #492 was the annual .... size contest ( http://www.mersenneforum.org/showthread.php?t=20169 ) which NFS@Home, as a public BOINC project, might be subjected to. For better or worse, all public BOINC projects need these high-powered workers to further their aims, and have to deal with them somehow.
But this year's edition of that contest was delayed by a month.

In order to get several days of break from feeding the grid, I'll bite the bullet of queuing the remaining 15 composites from post #491. Thanks to Sean providing ready-made polynomials I just have to trial-sieve, queuing these 30 numbers (in total) is about as painless as it can be for me
Sure, this will reduce options for feeding the grid in several weeks, when external factors explode our computing power and disrupt our process. However, at that point, we can, for once, tap into the long lists of numbers which haven't received a sufficient amount of ECM, and revert back to feeding the grid with "higher-quality" composites when the surge is over.

[pinhodecarlos]

Lionel, that's not an excuse. Please look at the NFS BOINC stats and you will see more CPU power has been deployed and sitting idle. Please just add the rest of the numbers to the queue. Factoring projects will thank you. Come on...