20200120, 02:32  #1871  
"Curtis"
Feb 2005
Riverside, CA
7×659 Posts 
Quote:
That said, for msieveCPU work I'd set the coefficient range you want to search in the command line, and otherwise let it work. After a couple tries, you might notice that you'd like to restrict the output of one or more parts of the process. So, I'd run: ./msieve np "1000000,1100000" s polyfile1 on the first core, changing the coeff's on each instance in order to cover, say, a 1M block in a reasonable time (like a day, or two). Each instance will look to worktodo.ini for the input number, so you can run every instance in the same folder if you like (as long as you make different save files with s for each). Once you do this, you'll see how may polys are generated by the default msieve poly select settings, and you can then consider running the steps separately. The 3 steps are np1 (generate raw polynomials for future polishing), nps (optimize raw polys for size, takes a fraction of a second per poly), npr (optimize for root properties, produces final polys usable by a sieve, takes 35 min per poly at ~C190 size, more for bigger composites) The usual GPUenhanced way to run things separately is to run np1 (the GPU part) and nps (the size optimizing step, which quickly improves and scores each raw poly generated by the np1 step) together. I'll run a GPU for a day or so, and then sort the output file by score and send only the top 100 or so scores to the npr step; the rest would be a waste of time to try rootoptimizing on. So, you might run: ./msieve np1 nps "1000000,1100000" s rawpoly1 and after it finishes, cat all the output files from your various runs together, sort them by the last column (which is a measure of quality), truncate to the top 100 or 150 lines, and then: ./msieve npr s [cat'ed file name] Note the cat'ed file must have suffix .ms, just as the rawpoly files have. Whether this effort is worth your time depends on how many intermediate polys msieve generates with the default settings. If running np1 nps produces a file with 1000 lines in a day, you should do the npr step separately and filter the nps output. Hope this helps! I'm not very good at recalling what I didn't know when I set out to learn this stuff, so I likely left out some bits important to understanding; I'll be happy to try to remedy those when you identify them. 

20200120, 20:22  #1872 
Sep 2008
Kansas
7·463 Posts 
C189 poly
An early baseline.
Code:
N: 171065344393143145598685691004020457412949305674191856490470856856353467726774164074336525717740050483725614204311545373938206064857869944567319589822085897560103957504493890195049294967729 R0: 1398161583686828531470118604065371984 R1: 1187142349205771171 A0: 15102286091227267832135864754379187414025981435 A1: 497879116946641926689720423820807937837 A2: 27439975218771539667117465183681 A3: 575684274285767307977493 A4: 12193816703534774 A5: 32016600 skew 56550159.73, size 1.367e18, alpha 8.083, combined = 2.035e14 rroots = 5 
20200121, 01:15  #1873 
"Curtis"
Feb 2005
Riverside, CA
11005_{8} Posts 
CADO says:
Code:
n: 171065344393143145598685691004020457412949305674191856490470856856353467726774164074336525717740050483725614204311545373938206064857869944567319589822085897560103957504493890195049294967729 skew: 29327175.183 c0: 122813740464986032965496322532662517388492480 c1: 46371620654869241552317485387440475878 c2: 1751856410174864380538219925817 c3: 63446716152916521165305 c4: 2079998547748350 c5: 1134000 Y0: 3902553125077415603716331429749427663 Y1: 214995590231742585983729 # MurphyE (Bf=4.295e+09,Bg=4.295e+09,area=2.147e+15) = 2.489e08 That's over 10% better than the previous record, so I won't try a second CADO run. I ran admax 1M, P=3M, incr=210, nq=15625. If I did a second run, I'd try admin 1M admax 20M, incr 4620. 
20200121, 02:31  #1874 
Jun 2012
3^{3}×109 Posts 

20200121, 04:22  #1875  
Sep 2008
Kansas
110010101001_{2} Posts 
Quote:
Code:
R0: 1393599239599595290006064741998926876 R1: 946625746109546621 A0: 136027168288871325742499604367778620119838525 A1: 73272651910647714482943504075726120902 A2: 8610143338350156781304768474363 A3: 281080067656185322633130 A4: 4984025700534996 A5: 32544120 skew 34904462.42, size 1.448e18, alpha 7.208, combined = 2.109e14 rroots = 5 

20200121, 21:19  #1876 
Jun 2012
3^{3}×109 Posts 
C189 poly
My search should finish tomorrow evening. I’m bailing after that unless someone can make a good case for the search continuing.

20200123, 03:06  #1877 
Jun 2012
3^{3}·109 Posts 
CADO result:
Code:
n: 171065344393143145598685691004020457412949305674191856490470856856353467726774164074336525717740050483725614204311545373938206064857869944567319589822085897560103957504493890195049294967729 skew: 29985050.394 c0: 2513826780601637928378359984878765061986468900 c1: 117746085170220907393886509080764090404 c2: 17584276331630705778529665859825 c3: 645100683623259210556021 c4: 13652526139832520 c5: 70686000 Y0: 2356084567431967037174939101706834305 Y1: 126078896451210514076387 # MurphyE (Bf=8.590e+09,Bg=4.295e+09,area=5.469e+16) = 1.184e08 # f(x) = 70686000*x^5+13652526139832520*x^4+645100683623259210556021*x^317584276331630705778529665859825*x^2117746085170220907393886509080764090404*x+2513826780601637928378359984878765061986468900 # g(x) = 126078896451210514076387*x2356084567431967037174939101706834305 VBCurtis has the top poly, and it seems time for GNFS. I’m done with this poly search. Unless someone else wants to search further, I’ll run some test sieving on 15e this weekend. 
20200123, 10:15  #1878 
Oct 2019
15_{16} Posts 
I've run about two days of poly select, but my best poly had combined e ~1.8e14. Still, thanks VBCurtis for your help with getting me started, will try to tune the args so I can hopefully find some nice polys in the future.
Not searching anymore though, so we can probably go with VBCurtis' poly. Last fiddled with by jagotu on 20200123 at 10:16 
20200125, 21:08  #1879  
"Max"
Jun 2016
Toronto
23·31 Posts 
C189 poly  record score correction
Quote:
Quote:
Got lost in elliptic curves, hacked into some new Z6 families, see the bottom of the page: https://web.math.pmf.unizg.hr/~duje/tors/z6.html I am truly sorry to interrupt this holiday: https://www.mersenneforum.org/showpo...postcount=1537 It was also reposted later in https://www.mersenneforum.org/showpo...&postcount=136, the second post after the chart. To be helpful and productive, I'll try to pull up VBCurtis's score and (maybe) run another CADO search with the suggested parameters (vebis would do it way faster than me, is he around?) 

20200125, 21:55  #1880  
Jun 2012
3^{3}×109 Posts 
Quote:
If you want to run his poly through your alchemy that might improve things a bit. I’m test sieving now and am closing on the best parameters  the throughput is good for a C189. But I will pause in case you take a crack at it. Thanks. 

20200508, 22:45  #1881 
"Ed Hall"
Dec 2009
Adirondack Mtns
110111010101_{2} Posts 
I'm playing with some alternate scripts for my machines that aren't working on the 198 team project. I might as well try to make them useful during this time.
Is there a polyselect request that I might try some things with? I won't be trying to set too many values ATM, so something where I wouldn't duplicate effort and if I don't perform well, nothing is really detracted from the overall picture, would be preferred. 
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