mersenneforum.org

mersenneforum.org (https://www.mersenneforum.org/index.php)
-   NFS@Home (https://www.mersenneforum.org/forumdisplay.php?f=98)
-   -   Queue management for 16e queue (https://www.mersenneforum.org/showthread.php?t=25928)

VBCurtis 2020-09-04 22:33

Queue management for 16e queue
 
Post jobs here you wish to be run on the 16e siever = f_small queue.

Guidelines:
1. Greg has requested a maximum lim of 225M to keep memory use comfortably below 1GB/client process and to keep our jobs from overlapping the size of his. Edit: 200/250M should be acceptable, averaging to 225M.
2. The more jobs posted to 16e rather than 15e, the faster 15e will move along.

Many jobs are roughly the same speed on 15e and 16e; for instance, GNFS 184-187. Post where you like, but consider posting test-sieve and suggested Q-range for both 15e and 16e if your job is near the crossover; both so others can learn where the crossover is, and so the queue managers can keep the wait as short as possible on all queues.

Note: Greg has also requested a lim cap of 200M on 15e.

fivemack 2020-10-04 20:29

Would anyone be up for say 30k curves at B1=260M on F1565

[code]
898577600957458082817012215882165508563668653664358493738893522466409221942746665068993028034375228782419911153278586365513991645861651135664033105687400260471070947660690029466178073221007827086032497462411095795403425738745977703024509992798576951889223184161
[/code]

It seems at the difficult end of fs problems (261-digit quartic, I'm seeing yield of about 1.5 relations per Q with 3x33lpr 2x31lpa) and I think it does need that degree of ECM before it's sensible to throw volunteer cycles at the SNFS.

swellman 2020-10-04 21:43

[QUOTE=fivemack;558883]Would anyone be up for say 30k curves at B1=260M on F1565

[code]
898577600957458082817012215882165508563668653664358493738893522466409221942746665068993028034375228782419911153278586365513991645861651135664033105687400260471070947660690029466178073221007827086032497462411095795403425738745977703024509992798576951889223184161
[/code]

It seems at the difficult end of fs problems (261-digit quartic, I'm seeing yield of about 1.5 relations per Q with 3x33lpr 2x31lpa) and I think it does need that degree of ECM before it's sensible to throw volunteer cycles at the SNFS.[/QUOTE]

That’s a good sized ECM. I’ll ask Yoyo@Home if he’s willing to carry it.

swellman 2020-10-05 09:53

[QUOTE=fivemack;558883]Would anyone be up for say 30k curves at B1=260M on F1565

[code]
898577600957458082817012215882165508563668653664358493738893522466409221942746665068993028034375228782419911153278586365513991645861651135664033105687400260471070947660690029466178073221007827086032497462411095795403425738745977703024509992798576951889223184161
[/code]

It seems at the difficult end of fs problems (261-digit quartic, I'm seeing yield of about 1.5 relations per Q with 3x33lpr 2x31lpa) and I think it does need that degree of ECM before it's sensible to throw volunteer cycles at the SNFS.[/QUOTE]

Yoyo@Home is running this job now. Under the [URL="https://www.rechenkraft.net/yoyo/y_status_ecm.php"]Aliquot tab[/URL].

fivemack 2020-10-09 10:05

OK, my initial relation-sampling was over too small a region; I'm seeing roughly one relation per Q for

[code]
n: 898577600957458082817012215882165508563668653664358493738893522466409221942746665068993028034375228782419911153278586365513991645861651135664033105687400260471070947660690029466178073221007827086032497462411095795403425738745977703024509992798576951889223184161
skew: 1
c4: 1
c3: -1
c2: 1
c1: -1
c0: 1
Y1: -71558092601766452430641106302905217344934236440122960529002115744
Y0: 187341518601536966291015050946540312701895836604078191803255601777
lpbr: 33
lpba: 31
mfbr: 96
mfba: 62
rlambda: 3.4
alambda: 2.4
rlim: 250000000
alim: 200000000
[/code]

in the Q=150M..400M range, which would imply sieving 150M..700M to get something plausible, and it's sieving very slowly on my hardware (absolute best time is 2.5 seconds per relation) - I think this is too big for _fs. Thank you for the ECM, but I think this one will have to wait for cheaper computrons.

fivemack 2020-10-09 10:11

So, the easiest outstanding Fibonacci quartic is L2995A; difficulty 250.37

[url]http://factordb.com/index.php?showid=1100000000216955784[/url]

[code]
6647246946274833393456661338737441255614261080716309840406229789042569778456310323482125160454068850539445673923995827291479838370880449615345378166944942195594414495045570103808609316829203645670851879601136941[/code]

Would it be possible to queue up 20k curves at B1=260M on that one?

An alternative would be to binary-search the limits of _fs feasibility, with L4605A difficulty 256.64

[url]http://factordb.com/index.php?id=1100000000216955924[/url]

[code]
3584242181859180897028227800643356671652242043498330593404045120001651398447679822689230799275312050386811076406419865592578911649557946131137999151560109118895314557059384056761129147893233379009026747238392618096742921
[/code]

25k curves at B1=260M would be nice for that one, I'll do another thorough trial-sieve which will take ~48 hours..

swellman 2020-10-10 14:49

[QUOTE=fivemack;559316]So, the easiest outstanding Fibonacci quartic is L2995A; difficulty 250.37

[url]http://factordb.com/index.php?showid=1100000000216955784[/url]

[code]
6647246946274833393456661338737441255614261080716309840406229789042569778456310323482125160454068850539445673923995827291479838370880449615345378166944942195594414495045570103808609316829203645670851879601136941[/code]

Would it be possible to queue up 20k curves at B1=260M on that one?

An alternative would be to binary-search the limits of _fs feasibility, with L4605A difficulty 256.64

[url]http://factordb.com/index.php?id=1100000000216955924[/url]

[code]
3584242181859180897028227800643356671652242043498330593404045120001651398447679822689230799275312050386811076406419865592578911649557946131137999151560109118895314557059384056761129147893233379009026747238392618096742921
[/code]

25k curves at B1=260M would be nice for that one, I'll do another thorough trial-sieve which will take ~48 hours..[/QUOTE]

Yoyo has agreed to run these jobs but he asked me to manage the process. Keep in mind that work is limited to 20,000 curves per job for B1 =< 260M, 12,000 curves for B1 = 850M.

I will enqueue both jobs with yoyo in the next day or two.

fivemack 2020-10-11 09:28

Thank you so much!

VBCurtis 2020-10-29 00:55

[B]QUEUED AS C196_3366_2224[/B]

Aliquot 3366 index 2224, a C196, is ready for 16e-small:
[code]n: 1398516542119091547927880887727114963659389509804105922692120268647401334715710534035357328326678677296622476655524803463753551464210096969080964891534065442657109752753516921412646600842893476177
type: gnfs
skew: 125001952.15
c0: -24623140536189314142763591449244095867976653480
c1: 1591604144502435503327811672315382999292
c2: 45151115187254052425427334115817
c3: -227121374773875476420597
c4: -2975093123155512
c5: 6032880
Y0: -67399847496998630851429653894088679427
Y1: 125291089571292601013129
rlim: 134000000
alim: 250000000
lpbr: 32
lpba: 33
mfbr: 63
mfba: 95
rlambda: 2.6
alambda: 3.6
[/code]

Test-sieving 1kq blocks indicates a Q-range of 30-245M should be sufficient for ~625M relations:
[code]Q=20M 4467 rels, 0.596 sec
Q=50M 3766 rels, 0.645 sec
Q=80M 2982 rels, 0.711 sec
Q=110M 3129 rels, 0.713 sec
Q=140M 2717 rels, 0.765 sec
Q=170M 2011 rels, 0.807 sec
Q=200M 2548 rels, 0.854 sec
Q=230M 2257 rels, 0.877 sec
[/code]

I would like to handle the matrix.

charybdis 2020-10-29 01:13

[QUOTE=VBCurtis;561395]
[code]n: 13985165421190915479278808877271149636593895098041059226921202686474013347157105340353$
[/code]
[/QUOTE]

Might want to fix that line...

[COLOR="Red"]Curtis: Thanks! Fixed.[/COLOR]

jyb 2020-10-30 21:15

[B]QUEUED AS 8p3_834L[/B]

SNFS-251.06 (quartic) C216 HCN (8+3,834L), ECM to t60.
[code]
n: 335966767032973712039032374362950903677945846587153282355179398197279228448619141924385189638636246189124256780938091105048640848316159613076786121923701877546449489912905969884545889712234051981784709587026105258473
skew: 1.22474
c4: 4
c3: -12
c2: 18
c1: -18
c0: 9
Y1: 834385168331080533771857328695283
Y0: -411376139330301510538742295639337626245683966408394965837152256
rlim: 225000000
alim: 225000000
lpbr: 32
lpba: 32
mfbr: 96
mfba: 64
rlambda: 3.6
alambda: 2.6
[/code]
Trial sieving 2K blocks.
[code]
Q Yield
--- -----
50M 3083
90M 3649
130M 3730
170M 3497
210M 4019
250M 3774
290M 3954
330M 3735
[/code]
Recommend sieving special Q on rational side, 50M - 300M.


All times are UTC. The time now is 01:28.

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2021, Jelsoft Enterprises Ltd.