mersenneforum.org New for ‘22 - queue management for 15e_small
 Register FAQ Search Today's Posts Mark Forums Read

2022-04-26, 15:49   #56
chris2be8

Sep 2009

234810 Posts

Quote:
 Originally Posted by VBCurtis There is no such thing as "yield too high". Average yield of 3 to 4 is a good thing; I've run jobs with yields of 6+ with pleasant results many a time, and on small jobs I've seen yields of 10+.
I meant to say 32/31 yield would be larger than necessary so would take longer to download the relations and probably longer to solve the matrix.

NB. I'll do the LA for f86_145m1 (forgot to say that in my first post).

 2022-05-02, 13:37 #57 swellman     Jun 2012 67338 Posts QUEUED AS 3p2_589 3+2,589 is another HCN stub (a c175) best factored with GNFS on 15e_small. Code: n: 2719623508566180831307901339146067102113210299710050180505078249846918063396106393072908267217995844878606779804794922529258221958183286617930937030570381157074889161275778269 skew: 16835714.71 type: gnfs lss: 0 c0: -2262668312373008342893367648676966365774823 c1: 575336648240602521282438366659505207 c2: 39056742936640164140054535721 c3: -7086546851403956206427 c4: -204461038878198 c5: 5526360 Y0: -3454728500945796707622227947459990 Y1: 39070170863432167 # norm 5.272816e-17 alpha -7.802133 e 1.727e-13 rroots 5 rlim: 134000000 alim: 134000000 lpbr: 31 lpba: 31 mfbr: 62 mfba: 91 rlambda: 2.7 alambda: 3.4 Results of test sieving on the algebraic side with Q in blocks of 1000: Code: MQ Norm_yield Speed (sec/rel) 35 3369 0.200 50 3242 0.196 75 3248 0.198 100 3175 0.254 120 2957 0.253 Suggesting a sieving range for Q of 34-115M to generate 260M raw relations. Last fiddled with by swellman on 2022-05-02 at 13:47
 2022-05-04, 15:29 #58 swellman     Jun 2012 3,547 Posts QUEUED AS C173_141_103 C173_141_103 is a stub from the XYYXF project remaining after Ryan ran a swath of ECM. It is a straightforward GNFS job on 15e_small. Code: n: 76328388608632913341793715745528136236816156594256710655833082798808851556040969834108798451583669582530320697414731831779384655444617600063196422839827936692544539526752007 skew: 31065807.12 type: gnfs lss: 0 c0: -437901903580587290414710436900340483030179 c1: 206418350633852541960509430288534578 c2: -10587226339412972182519087473 c3: -2243006462628567555182 c4: 5893323958076 c5: 122100 Y0: -3624049208230328097989953941068736 Y1: 587909180570179 # norm 6.790486e-17 alpha -6.775137 e 1.969e-13 rroots 5 rlim: 134000000 alim: 134000000 lpbr: 31 lpba: 31 mfbr: 62 mfba: 91 rlambda: 2.7 alambda: 3.4 Results from test sieving on the -a side with Q in blocks of 1000: Code: MQ Norm_yield Speed (sec/rel) 40 3536 0.241 60 3691 0.242 80 3623 0.263 100 3437 0.289 120 3245 0.340 Suggesting a sieving range for Q of 40-115M to generate 265M raw relations. Last fiddled with by swellman on 2022-05-04 at 15:38
 2022-05-06, 15:55 #59 chris2be8     Sep 2009 22×587 Posts QUEUED AS f19_221m1 (19^221-1)/4148232674036588020075653952816245435324486 from the Brent tables: Code: # Built Wed Jan 26 17:23:24 2022 # Estimated SNFS difficulty 260., GNFS equivalent 186, GNFS difficulty 240, degree 6 # phi 221 19 1 969801167556019651092502958779603147093934995969835440573904361112938660554400870278401580486980251827484420747442517116338735320265944198943397613993095617014566596837924201076737901781199889362815247399591190218991433102238162742935662363 n: 969801167556019651092502958779603147093934995969835440573904361112938660554400870278401580486980251827484420747442517116338735320265944198943397613993095617014566596837924201076737901781199889362815247399591190218991433102238162742935662363 # 19^221-1^221, difficulty: 260.87, skewness: 1.00, alpha: 3.10 # cost: 1.88388e+19, est. time: 8970.87 GHz days (not accurate yet!) skew: 1.000 c6: 1 c5: 1 c4: -5 c3: -4 c2: 6 c1: 3 c0: -1 Y1: -5480386857784802185939 Y0: 30034640110980377619945846078500632729311722 type: snfs # msieve rating: skew 1.00, size 8.523e-13, alpha 3.126, combined = 9.981e-14 rroots = 6 rlim: 134000000 alim: 134000000 lpbr: 32 lpba: 32 mfbr: 64 mfba: 64 rlambda: 2.6 alambda: 2.6 Sieve from 30M to 186M on the rational side (that should get 440M relations). Test sieving 10k ranges: Code: Q yield 34M 34027 84M 29270 134M 26378 184M 24177 Although if you think a 32/32 job should be on 15e instead of 15e_small I won't mind if you move it there. This is probably near the upper limit for 15e_small. I'll do the LA. Last fiddled with by swellman on 2022-05-06 at 22:05
2022-05-06, 21:49   #60
swellman

Jun 2012

3,547 Posts

Quote:
 Originally Posted by chris2be8 Although if you think a 32/32 job should be on 15e instead of 15e_small I won't mind if you move it there. This is probably near the upper limit for 15e_small. I'll do the LA.
No worries on posting 32/32 jobs here, as long as the lims are equal and 134M or less. I’ll enqueue it shortly.

SNFS 262-4 seems to be the breakpoint between 15e_small and 15e, though there are exceptions of course. Test sieving always shows the way.

 2022-05-07, 15:56 #61 chris2be8     Sep 2009 1001001011002 Posts Thanks. Although can you update it to say I'll do the LA? Done. Last fiddled with by swellman on 2022-05-07 at 16:27
 2022-05-08, 02:35 #62 swellman     Jun 2012 3,547 Posts QUEUED AS C175_3408_1704 AS 3408:i1704 is a GNFS 175 from a series last worked by RyanP, who gave it plenty of ECM before stopping his efforts (19,000 curves @B1=260M). Code: n: 3623732059492379587884735286611109868544530900485930974251504817261825410802590494397296456660450944895652811658594030578105148923042786530897012672344827181894766190644560751 skew: 24941951.29 type: gnfs lss: 0 c0: 2215180349031975204369293991877209163192080 c1: 3251970678819052765463562118037419878 c2: -17097857292473206479860208909 c3: -19185136822489033488640 c4: 41880818304284 c5: 6752592 Y0: -3515095378628813702148221050506329 Y1: 21502271887802807 # norm 4.949974e-17 alpha -8.531076 e 1.658e-13 rroots 5 rlim: 134000000 alim: 134000000 lpbr: 31 lpba: 31 mfbr: 62 mfba: 91 rlambda: 2.7 alambda: 3.4 Results of test sieving on the -a side with Q in blocks of 1000: Code: MQ Norm_yield Speed (sec/rel) 40 3369 0.239 70 3422 0.275 100 3136 0.329 140 2867 0.330 Suggesting a sieving range for Q of 40-120M to generate 260M raw relations. Last fiddled with by swellman on 2022-05-08 at 12:01
 2022-05-12, 16:20 #63 chris2be8     Sep 2009 22×587 Posts QUEUED AS f89_143m1 (89^143-1)/278957920645440651421693664015347166365998606376504 from the Brent tables: Code: # Built Sun Feb 6 21:28:05 2022 # Estimated SNFS difficulty 253., GNFS equivalent 181, GNFS difficulty 229, degree 5 n: 2076023441594681207195867163425410792803633047661894007001814768255906122284797711959226994745253348499006307928060333468971948905505543750802725546316044715635911567396479564752354952251443459593303443902743847420870032100084267 # 89^143-1^143, difficulty: 253.42, skewness: 1.00, alpha: 2.22 # cost: 1.07714e+19, est. time: 5129.26 GHz days (not accurate yet!) skew: 1.000 c5: 1 c4: 1 c3: -4 c2: -3 c1: 3 c0: 1 Y1: -21982145917308330487013369 Y0: 483214739129835302401470169464750647309561584730162 type: snfs # msieve rating: skew 1.00, size 3.242e-17, alpha 2.379, combined = 9.428e-14 rroots = 5 rlim: 134000000 alim: 134000000 lpbr: 31 lpba: 31 mfbr: 92 mfba: 62 rlambda: 3.6 alambda: 2.6 Sieve on 15e_small from 44M to 134M on the rational side (target 230M relations). Test sieving 10k ranges: Code: Q yield 34M 29073 84M 25514 134M 22846 184M 21269 I also test sieved the degree 6 .poly, but that has a lower yield. Last fiddled with by swellman on 2022-05-12 at 16:43
 2022-05-19, 19:46 #64 swellman     Jun 2012 1101110110112 Posts QUEUED AS 8p7_292 8+7,292 is a HCN ready for SNFS. It can be sieved on 15e_small though if I don't get enough rels to build a reasonable matrix then I'll just generate more locally. I'll take the LA. Code: n: 474377312845714036494730860786888346696933298099726025041402270341913296488453454285047942962414364721134414019634036757735423878317481941527080253498816527130617822483052630590856358782308389828169 skew: 0.2614 type: snfs size: 265 c6: 3136 c0: 1 Y1: -256923577521058878088611477224235621321607 Y0: 44601490397061246283071436545296723011960832 rlim: 134000000 alim: 134000000 lpbr: 32 lpba: 32 mfbr: 94 mfba: 64 rlambda: 3.5 alambda: 2.8 Results of test sieving on the rational side with Q in blocks of 1000: Code: MQ Norm_yield Speed (sec/rel) 40 3193 0.165 70 3018 0.172 100 2468 0.233 140 2327 0.270 180 1952 0.284 210 1945 0.302 Suggesting a sieving range of 35-205M to generate 425M raw relations. Last fiddled with by swellman on 2022-05-19 at 19:51
 2022-05-23, 20:19 #65 unconnected     May 2009 Russia, Moscow 1010110111002 Posts QUEUED AS C169_785232_11566 C169 from 785232:i11566 for 15e_small queue: Code: n: 3315474627896068580077909566355233994613143180376439077828259041686921733560182130294270493905279027934860788711431582257906140621531886630714127208557860566611974906081 # norm 2.008024e-16 alpha -7.444142 e 3.842e-13 rroots 5 skew: 22157603.14 c0: -15658297279742080247148768480002965337760 c1: 70714646304708449768963116165747272 c2: 5817629668958351042956558194 c3: -988910332602724829579 c4: -10499448900902 c5: 210672 Y0: -435900915356885447599442792439497 Y1: 291333941423218403 rlim: 67000000 alim: 67000000 lpbr: 30 lpba: 30 mfbr: 60 mfba: 60 rlambda: 2.6 alambda: 2.6 type: gnfs lss: 0 Suggesting sieving range is 16M-80M, I'll take the LA. Last fiddled with by swellman on 2022-05-23 at 23:12
 2022-05-24, 15:56 #66 chris2be8     Sep 2009 22×587 Posts I've ECMed (51^169-1)/(51^13-1) to nearly t60, so it's ready for SNFS. But test sieving suggests it's too big for 15e_small, I could only get a nearly high enough yield with lpb[ar]: 32 and 3 large primes. Which would probably get a very tough matrix. If I decide to send it to 15e for larger [ar]lim and sieving range how would that affect the matrix size? And are there any recommended lim's (IIRC the siever slows with lims just over 134M)?

 Similar Threads Thread Thread Starter Forum Replies Last Post VBCurtis NFS@Home 141 2022-06-27 01:41 VBCurtis NFS@Home 118 2022-06-23 20:47 VBCurtis NFS@Home 254 2022-01-02 01:59 Rodrigo Software 7 2018-05-25 13:26 debrouxl NFS@Home 10 2018-05-06 21:05

All times are UTC. The time now is 20:58.

Mon Jun 27 20:58:24 UTC 2022 up 74 days, 18:59, 2 users, load averages: 1.14, 1.31, 1.36