Fast Breeding (guru management) - Page 53

fivemack · 2016-06-01, 08:50

Quote:

Originally Posted by debrouxl

C188_132_125 has terrible yield: after sieving most of the 20M-120M range, the recommended ending Q is currently 1487M, which is way too high.
32-bit LPs are usually alright for 15e on a number of that size, but qlim = alim = 26800000 is an order of magnitude too low. I failed to detect that when pasting the ready-made polynomial. I guess we should terminate sieving for that number, and create a new entry with the fixed polynomial ?

Good catch - looks like a typo for 268000000 (round number just less than 2^28). Yes: terminate sieving, delete the job and start a new one. Bother.

swellman · 2016-06-01, 12:00

I originally suggested the value of alim=268M, so I'll own the error. What should it be? Models I've seen suggest ~362M, but I think you guys are implying it should much higher.

Is this due to 3 lp vs 2? Or something else?

fivemack · 2016-06-01, 12:24

Quote:

Originally Posted by swellman

I originally suggested the value of alim=268M, so I'll own the error. What should it be? Models I've seen suggest ~362M, but I think you guys are implying it should much higher.

Is this due to 3 lp vs 2? Or something else?

No, the problem is that alim was typoed as 26.8 million, which is clearly too low! 268M is about right (just below a power of two is good because of the internal architecture of the siever)

swellman · 2016-06-01, 14:43

Quote:

Originally Posted by fivemack

No, the problem is that alim was typoed as 26.8 million, which is clearly too low! 268M is about right (just below a power of two is good because of the internal architecture of the siever)

Understood. Well, this gets better as it was my typo that Lionel used for the 15e job.

Sorry for the wasted cycles everyone.

swellman · 2016-06-02, 00:33

Just in time for the upcoming decathlon. Polys attached.

C206_134_84
C223_130_112
C224_138_70
C211_148_132
C212_146_41

jyb · 2016-06-02, 04:49

Trying to hit the sweet spot for 15e: I have a 182-digit composite (HCN) that would be SNFS-271, so it's right on the edge between GNFS and SNFS. It's received a full t55. How much additional ECM would you like to see before it can be queued?

fivemack · 2016-06-02, 09:42

Given the state of the queue I'd happily queue that number without further ECM.

jyb · 2016-06-02, 16:29

Quote:

Originally Posted by fivemack

Given the state of the queue I'd happily queue that number without further ECM.

Okay, the number is 6^347+5^347. Polynomial below. Sorry, I don't know typical parameters for numbers at this difficulty.

Code:

# 6^347+5^347, difficulty: 271.50, skewness: 1.03, alpha: 0.00
n: 31457733642273427197233338099551780665427244079721305258889309192670601618823483036309380727566630643706306475925222428412340535439143825228943995237707132582472442217459933239324511
skew: 1.031
c6: 5
c0: 6
Y1: -34694469519536141888238489627838134765625
Y0: 1357602166130257152481187563160405662935023616

fivemack · 2016-06-02, 17:58

OK, parameter selection running overnight and I'll queue it in the morning.

Will also do parameter selection on Gimarel's polynomials at http://mersenneforum.org/showpost.ph...&postcount=631 and queue the best one

fivemack · 2016-06-03, 08:22

6+5.347 queued

C188_132_125 deleted, new job created with right alim/rlim

pinhodecarlos · 2016-06-03, 09:30

14e management page should be updated because a lot has been done for more than a week without being reflected on the page. Thank you all.

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2016-06-01, 12:00	#574
swellman Jun 2012 2²×773 Posts	I originally suggested the value of alim=268M, so I'll own the error. What should it be? Models I've seen suggest ~362M, but I think you guys are implying it should much higher. Is this due to 3 lp vs 2? Or something else?

2016-06-02, 04:49	#578
jyb Aug 2005 Seattle, WA 3×19×31 Posts	Trying to hit the sweet spot for 15e: I have a 182-digit composite (HCN) that would be SNFS-271, so it's right on the edge between GNFS and SNFS. It's received a full t55. How much additional ECM would you like to see before it can be queued?

2016-06-02, 09:42	#579
fivemack (loop (#_fork)) Feb 2006 Cambridge, England 2³×11×73 Posts	Given the state of the queue I'd happily queue that number without further ECM.

2016-06-02, 17:58	#581
fivemack (loop (#_fork)) Feb 2006 Cambridge, England 6424₁₀ Posts	OK, parameter selection running overnight and I'll queue it in the morning. Will also do parameter selection on Gimarel's polynomials at http://mersenneforum.org/showpost.ph...&postcount=631 and queue the best one

2016-06-03, 08:22	#582
fivemack (loop (#_fork)) Feb 2006 Cambridge, England 2³×11×73 Posts	6+5.347 queued C188_132_125 deleted, new job created with right alim/rlim

2016-06-03, 09:30	#583
pinhodecarlos "Carlos Pinho" Oct 2011 Milton Keynes, UK 11523₈ Posts	14e management page should be updated because a lot has been done for more than a week without being reflected on the page. Thank you all.