20221123, 22:23  #2322 
Jun 2012
2·5·17·23 Posts 
I’ve asked Ed to see if he can improve Gimarel’s polynomial, primarily the very high skew. I sieved at a couple of Q values and tbh the results were a bit disappointing presumably due to the skew. But maybe Ed can improve things.
Regardless, I’ll test sieve Gimarel’s poly once Ed finishes and reports the results. Regarding the apparent pileup on 16e_small, we got we asked for: a locally managed big siever. Now we just have to manage it. Personally I don’t care if it takes 6 months or more to get results on “my jobs” but others may feel differently. I too have some upcoming jobs for 16e_small but that’s a discussion for another thread. 
20221123, 22:59  #2323  
I moo ablest echo power!
May 2013
5×7×53 Posts 
Quote:


20221123, 23:04  #2324 
If I May
"Chris Halsall"
Sep 2002
Barbados
2BB5_{16} Posts 

20221124, 01:31  #2325 
"Ed Hall"
Dec 2009
Adirondack Mtns
2^{3}×677 Posts 
I PM'd this, but I'll post it here, too:
Code:
Y0: 14957978187258655870240901459296034093884 Y1: 42565897073891884679269 c0: 37746391217112409300976615136297394616548855491015 c1: 788002616915912609544957767030183328658919 c2: 7188372473469131426824096732089934 c3: 18309757962824193913492816 c4: 31525701669955896 c5: 10810800 skew: 402453809.304 # lognorm 65.65, E 57.26, alpha 8.39 (proj 3.15), 3 real roots # MurphyE(Bf=1.000e+07,Bg=5.000e+06,area=1.000e+16)=1.551e15 Best poly cownoise values: 562404130.06456 1.56250988e15 
20221124, 02:43  #2326  
Jun 2012
2·5·17·23 Posts 
Quote:


20221126, 02:40  #2327 
Jun 2012
2×5×17×23 Posts 
I test sieved both Gimarel's record polynomial (post #2317) as well as EdH's spun up version (post #2325 with skew of 402453809.304) with a slightly lower escore.
They are basically identical in terms of yield and speed. Both are superior to any and all previous polynomials, be they deg 5 or 6. Code:
deg 5  Gimarel deg 5  spun MQ Norm_yield speed (sec/rel) Norm_yield speed (sec/rel) 65 4431 0.698 3960 0.710 100 3597 0.765 3598 0.781 150 3509 0.768 3509 0.758 200 3189 0.827 3195 0.827 250 3071 0.843 3073 0.850 300 2986 0.855 2986 0.865 350 2859 0.886 2859 0.901 400 2854 0.877 2849 0.884 500 2565 0.964 2570 0.964 600 2414 1.009 2423 1.009 700 2272 1.064 2298 1.070 spec_Q range 65685M 65685M BTW, I updated the record degree 5 poly for a c208 with Gimarel's recent find. 
20221126, 02:56  #2328 
"Curtis"
Feb 2005
Riverside, CA
2^{2}×3^{3}×53 Posts 
Looking at post #2315 for testsieve params, I think you'll find better results with the smaller lim on the 3LP side: switch the 190M and 260M. If you like, I can explore this myself.
Is there interest in teamsieving e.g. 60100M on CADO, to maximize the benefit CADO provides sieving below lim? Doing so would likely save 6070MQ off the fsmall queue, like 100600M might be enough. I can offer my trusty old dual10core ivy bridge xeon as host; it can also do the matrix if Greg doesn't have available GPU time. 
20221126, 03:18  #2329 
"Ed Hall"
Dec 2009
Adirondack Mtns
1528_{16} Posts 
I can offer some clients for a team sieve and I wouldn't mind trying to run the matrix with my GPU to see if I could, if frmky would prefer not to. My GPU is probably a bit slow, but it does have 24GB and it's faster than my 40 thread Xeons.

20221126, 11:19  #2330  
Jun 2012
2·5·17·23 Posts 
Quote:
Quote:


20221126, 20:54  #2331 
"Curtis"
Feb 2005
Riverside, CA
2^{2}×3^{3}×53 Posts 
Pretty sure the matrix won't fit in 24GB; for reference, the C207 we teamsieved in 2019 had a 72M matrix. This is why Greg should have first crack at it!
The three of us are enough to commit to 40MQ, and a fourth will likely chip in anyway. Something like 34 weeks should do it. I'll do some testing this week, 34/34 against 34/35 as well as reversing the lims and a little mfb testing. 
20221126, 21:45  #2332  
Jun 2012
2×5×17×23 Posts 
Quote:
Confess I may need a bit of hand holding on getting linked into someone’s machine but I’ll see if I can dig up my notes. 

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