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Old 2021-10-07, 17:54   #78
VBCurtis
 
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That's funny. I don't pay attention to the form of the Kosta numbers so I didn't give a different poly any consideration.

I'll test-sieve this sextic tomorrow and send it to the 15e queue; it will fit there without trouble, and that queue is nearly dry anyway.
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Old 2021-10-07, 19:38   #79
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Quote:
Originally Posted by VBCurtis View Post
That's funny. I don't pay attention to the form of the Kosta numbers so I didn't give a different poly any consideration.

I'll test-sieve this sextic tomorrow and send it to the 15e queue; it will fit there without trouble, and that queue is nearly dry anyway.
Thanks for test sieving (again). Are you certain it will fit on 15e? If so I can enqueue the new job file with a new name once you characterize it.

Otherwise I can just modify the existing poly and sieving range if it must remain here on f_small.
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Old 2021-10-07, 20:50   #80
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Quote:
Originally Posted by swellman View Post
Thanks for test sieving (again). Are you certain it will fit on 15e? If so I can enqueue the new job file with a new name once you characterize it.

Otherwise I can just modify the existing poly and sieving range if it must remain here on f_small.
You may want to run the skew value through cownoise, since it apparently comes up with values different from the standard guideline (which would have given 1.000 for the original poly as well).
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Old 2021-10-07, 23:18   #81
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Quote:
Originally Posted by VBCurtis View Post
That's funny. I don't pay attention to the form of the Kosta numbers so I didn't give a different poly any consideration.
Same here - well spotted Jon. Didn't even look at the job name; the "35" should have set alarm bells ringing.

The cownoise poly generator appears to automatically generate quartics for exponents divisible by 5, even if they are also divisible by 7, 11 or 13.

Quote:
Originally Posted by jyb View Post
You may want to run the skew value through cownoise, since it apparently comes up with values different from the standard guideline (which would have given 1.000 for the original poly as well).
Cownoise suggests a skew of 1.38. (not 1 because while the algebraic side is symmetrical, the rational side isn't!)
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Old 2021-10-08, 21:13   #82
VBCurtis
 
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Quote:
Originally Posted by swellman View Post
Thanks for test sieving (again). Are you certain it will fit on 15e? If so I can enqueue the new job file with a new name once you characterize it.
It'll be on 15e for sure. First-round of test-sieve indicates something like Q from 50-400M will do the job.
sec/rel is a tiny bit faster on 15e than 16f, at Q=200M. The job would be faster on f-small by the margin provided by the need for a lower raw-relations count on f-small; not a waste at all to use 15e.

I'm trying unbalanced lim's and varying some other settings to squeeze out some more yield, trying for q-max under 400M. I expect to post the job sometime Saturday to the 15e thread.
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Old 2021-10-11, 17:07   #83
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Default 8+3_326

QUEUED AS 8p3_326

8+3_326 is a c193 from the HCN project ready for NFS. It's a SNFS 294 so GNFS it is. Thanks to Max0526, EdH and Plutie for their respective efforts developing more advanced spin tools and helping me try to improve the score of this polynomial.

Code:
n: 1271515007705102652189952725761191819303345301747516657201545585841235185390068713842394904588907747685724022636366668603115951556046696630803051897639628872247236774090687993328825102782693109
skew: 107487791.894
type: gnfs
lss: 0
c0: 133940870445853294835954766480701480672986396520
c1: -1452026674957821687668946144418097210522
c2: -47876173107630258151460327041757
c3: 252440726525492253340481
c4: 4692042918656352
c5: -3027024
Y1: 661059788828815378
Y0: -17582196259493193321859678027857321489
# lognorm 61.62, E 52.82, alpha -8.79 (proj -2.55), 3 real roots
# MurphyE(Bf=1.000e+07,Bg=5.000e+06,area=1.000e+16)=1.496e-14
lpbr: 31
lpba: 32
mfbr: 62
mfba: 94
alim: 134000000
rlim: 268000000
rlambda: 2.7
alambda: 3.5
16f_small test sieving results from the algebraic side with Q in blocks of 10k:
Code:
Q(M)    Norm_yield
50        24598
100       25043
150       22717
200       20839
Suggests sieving over a Q range of 50-200M to get 350M raw relations. Caching it here for now.

Last fiddled with by swellman on 2021-11-04 at 17:30
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Old 2021-10-28, 00:50   #84
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Default HCN 3+2,1890L

3+2,1890L is now ready for GNFS. A sextic of SNFS difficulty 300 and an octic of 240 difficulty were possible but ultimately both proved inferior to the GNFS.

Code:
n: 12734530900787107377713574161011868289324430536561585108001584634844458530077827798443825688784448329151924256365768391241981555179087907348803260669361241812142769026337465374565031975093261
skew: 26407748.919
lss: 0
type: gnfs
c0: 82995649502610121695803377054054562879174460
c1: -68939390311785240168852442729643236969
c2: -1159047757477660892006812203906
c3: 166840082438286438551781
c4: 583630704694594
c5: 15763440
Y0: -4381990159763602434411484418467631498
Y1: 1351413343517779682402767
# MurphyE (Bf=8.590e+09,Bg=4.295e+09,area=5.469e+16) = 1.091e-08 = 1.892e-14 per cownoise
lpbr: 31
lpba: 32
mfbr: 62
mfba: 94
rlim: 134000000
alim: 268000000
rlambda: 2.7
alambda: 3.5
Test sieving on 16f_small with Q in blocks of 10K, sieved on the algebraic side:
Code:
Q(M)     Norm_yield
60          28820
100         26626
150         25334
200         23482
Suggesting a Q-range of 60-200M to generate 360M raw relations.

Caching here for eventual sieving.
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Old 2021-10-28, 02:00   #85
VBCurtis
 
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I think if you reverse the lims you'll get much better yield on this one. Smaller lim on sieve side and smaller lim on the 3LP side both suggest reversing which is 134 and which is 268.
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Old 2021-10-28, 02:30   #86
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Ouch. I’ll verify and correct.

Thanks.
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Old 2021-10-28, 17:00   #87
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Quote:
Originally Posted by VBCurtis View Post
I think if you reverse the lims you'll get much better yield on this one. Smaller lim on sieve side and smaller lim on the 3LP side both suggest reversing which is 134 and which is 268.
A spot check at Q=100M gave a 7% improvement on yield with no measurable difference in sec/rel.

I had always assumed that lim should or must be < 2^(lpb-4), so that in this case with lpba=31 the highest useful alim is 134M. Seems not.

Now fully test sieving with the new parameters (i.e. swapping alim and rlim). Should sieve a bit faster with a tighter Q range, if the spot result holds constant over the sieving range.

Any chance of higher dup rates with alim this high?
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Old 2021-10-28, 18:33   #88
VBCurtis
 
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Quote:
Originally Posted by swellman View Post
Any chance of higher dup rates with alim this high?
Aren't you lowering alim to 134M? I'm not sure what you are asking here.

I would also make lpbr = 32; I don't see the point of a 31LP job using the 16e siever. That would remove the violation of your (likely useful) rule of thumb "lpb - limbits should be 4 or more".

What size is this number, anyway?
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