20180915, 06:03  #1640  
"Curtis"
Feb 2005
Riverside, CA
1001001000010_{2} Posts 
Quote:
I use a rule of thumb that going up an LP requires 70% more relations, so sec/rel should be approx. 1/1.7 the time of 31LP. If I try a hybrid 31/32, I aim for 30% more relations than I would have for the smaller LP size alone. If you'd like me to do some testsieving, I'll have time (and interest) Sunday. I'm interested to testsieve one of these largecoeff SNFS candidates, so if you wish I'll tackle it then and post a writeup about test results. 

20180915, 20:24  #1641 
Sep 2009
977 Posts 
I fixed both of my typos for C240_4603759_37_minus1, it's clear that I didn't even read back what I wrote...
With less than a third of the WUs returned at the time of this writing, the extrapolation code suggests 15M98M for C162_785232_11446. That seems quite different from the previously suggested 15M70M, is that natural ? 
20180915, 22:23  #1642  
May 2009
Russia, Moscow
4751_{8} Posts 
Quote:
Test sieving results (for 1000q ranges): 20M 2744 30M 1899 40M 2640 50M 2247 60M 2693 70M 1998 80M 1997 ~ 2.3 rel per specialq in average So, I expected at least 120M raw relations from 55Mq range (15M70M). Don't know what is wrong, maybe some of the BOINC clients returns zero results or smth like this? 

20180917, 07:38  #1643 
Sep 2008
Kansas
3276_{10} Posts 
Getting caught up with my notes after a weekend of out of town company. It appears some wires got crossed with the job C240_4603759_37. I was explaining I couldn’t get a good set of parameters to use for a 31bit job on 14e. I accidentally stumbled upon straight forward parameters for 15e, which I suggested. Then I thought someone was going to look into placing it on 14e as a higher bit job. No one could read my crypt message about the bad set of parameters I tried. Now I see the job is queued using the set that didn’t work very well at all. I am questioning whether we can get enough good relations to build a matrix with TD=120 or better using the bad set I had abandoned...

20180918, 00:12  #1644  
Jun 2012
3^{2}×7×47 Posts 
Quote:


20180918, 01:33  #1645  
Sep 2008
Kansas
2^{2}×3^{2}×7×13 Posts 
Quote:
My blunder was bigger by grabbing the wrong dataset and claiming the job was completed so all the data can be deleted. Which strike me a bit odd since there are several OPN datasets still in the directory from last April. Why would such a recent job be deleted so quickly?? Thanks for requeueing a second copy. 

20180918, 11:05  #1646 
Jun 2012
3^{2}·7·47 Posts 
QUEUED AS C242_139_72
C242_139_72 is ready for SNFS on 15e as a 31bit job. Code:
n: 49812362053064629725046788271819961121661892630136477608704147257280255201509988608805502207069017639692371737945719579827750684563019989923911425010255319944874671885435968709590306732416932774169217125964595170656048055165054576999943008867 # 139^72+72^139, difficulty: 260.58, anorm: 1.70e+037, rnorm: 1.06e+049 # scaled difficulty: 262.54, suggest sieving rational side # size = 7.498e013, alpha = 0.000, combined = 9.478e014, rroots = 0 type: snfs size: 260 skew: 1.0198 c6: 8 c0: 9 Y1: 10463510478998672094480749996152012350160896 Y0: 52020869037289085480011921 rlim: 134000000 alim: 134000000 lpbr: 31 lpba: 31 mfbr: 62 mfba: 62 rlambda: 2.7 alambda: 2.7 Test sieving on the r side with Q in blocks of 5K: Code:
Q=40M 8954 Q=70M 7669 Q=120M 7023 Q=180M 5562 Q=250M 5050 Last fiddled with by swellman on 20180921 at 01:15 
20180918, 11:16  #1647 
Jun 2012
3^{2}·7·47 Posts 
QUEUED AS C250_137_86
C250_137_86 is ready for SNFS on 15e. Code:
n: 4882551164784256604186779948783602599048970696434654487886215653769921928202591397385975701221784264511324160458011717697125201644164505378282039798548809132479379484554962565368112446345390557569925508388404171272247142238595423180920120766222258903 # 137^86+86^137, difficulty: 266.96, anorm: 2.54e+039, rnorm: 9.47e+049 # scaled difficulty: 268.72, suggest sieving rational side # size = 9.807e014, alpha = 1.256, combined = 2.191e014, rroots = 0 type: snfs size: 266 skew: 10.8307 lss: 0 c6: 1 c0: 1614134 Y1: 820517673944445067756173565489 Y0: 311504538542350645715503145019022560519520256 rlim: 268000000 alim: 268000000 lpbr: 32 lpba: 32 mfbr: 64 mfba: 64 rlambda: 2.8 alambda: 2.8 Test sieving on the a side with Q in blocks of 5K: Code:
Q=40M 7406 Q=70M 7655 Q=120M 5790 Q=180M 5361 Q=250M 4683 Q=350M 5103 Q=450M 4492 Last fiddled with by swellman on 20180921 at 11:18 Reason: changed to algebraic side w/reduced Q range 
20180918, 15:54  #1648 
Sep 2009
2,003 Posts 
Sextics usually sieve better on the algebraic side, ie pass a to the siever. I've run my script to check .polys against it and there's not much in it but the algebraic side should be better. Or you might want to sieve on both sides if the yield drops too much at higher specialQs.
Chris 
20180919, 12:08  #1649 
Sep 2008
Kansas
2^{2}·3^{2}·7·13 Posts 
QUEUED AS C221_73659281_29m1
C221 from the MWRB file with OPN weight of 4129. [ a.k.a. Phi_29(Phi_5(3541)/5/427001) ] Code:
n: 19158844603971388507581221118976089908628871020460215190214530130501056787301285658416765308797970461345035890827495457011414238965357319835361687150733934985985188072358804187765589233828833700538947707920393190325853309 # 73659281^291, difficulty: 236.02, skewness: 20.47, alpha: 0.00 # cost: 2.80247e+18, est. time: 1334.51 GHz days (not accurate yet!) skew: 20.474 c6: 1 c0: 73659281 Y1: 1 Y0: 2168389904330821777632297211238586600401 type: snfs rlim: 67000000 alim: 134000000 lpbr: 31 lpba: 31 mfbr: 62 mfba: 91 rlambda: 2.7 alambda: 3.6 Code:
Q Yield 20M 11398 60M 8648 100M 7741 150M 6345 200M 6132 Last fiddled with by swellman on 20180921 at 22:56 
20180920, 13:17  #1650  
Jun 2012
3^{2}×7×47 Posts 
Quote:


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