20200410, 00:22  #89 
"Serge"
Mar 2008
Phi(4,2^7658614+1)/2
2^{2}·2,281 Posts 
Ah, the good ol' "cusp of covergence"... yup, +1015% more rels will do wonders.

20200411, 13:20  #90  
Jun 2012
2^{2}·23·31 Posts 
Quote:


20200411, 16:01  #91 
Jun 2012
Boulder, CO
181 Posts 
Definitely looking a lot better with some more rels...
Code:
Msieve v. 1.54 (SVN 1030M) Sat Apr 11 12:44:17 2020 random seeds: d470b8be a07a064d factoring 279441091906891533960233538329194101330014441725960390999007342357855400168211212501842451733654470555853507347821373596296049325886741856611262733847909839472007849262548215431506904992811614738217547 (201 digits) no P1/P+1/ECM available, skipping commencing number field sieve (201digit input) R0: 624948490362327534771821177945073520298 R1: 82975462901273636763037 A0: 7583346797836368579665634952612227928264820069472 A1: 32843208785445240649824828662012034845284 A2: 924819043613201432950422377289849 A3: 1593924972284055429767781 A4: 870570924566536 A5: 11725440 skew 1.00, size 1.030e19, alpha 8.637, combined = 7.246e18 rroots = 3 commencing linear algebra read 52787928 cycles cycles contain 182789158 unique relations read 182789158 relations using 20 quadratic characters above 4294917295 building initial matrix memory use: 26387.5 MB read 52787928 cycles matrix is 52787751 x 52787928 (28449.9 MB) with weight 8641886200 (163.71/col) sparse part has weight 6824525372 (129.28/col) filtering completed in 2 passes matrix is 52786748 x 52786925 (28449.8 MB) with weight 8641839946 (163.71/col) sparse part has weight 6824513416 (129.28/col) matrix starts at (0, 0) matrix is 52786748 x 52786925 (28449.8 MB) with weight 8641839946 (163.71/col) sparse part has weight 6824513416 (129.28/col) saving the first 240 matrix rows for later matrix includes 256 packed rows matrix is 52786508 x 52786925 (25976.1 MB) with weight 6312856809 (119.59/col) sparse part has weight 5964899244 (113.00/col) using block size 8192 and superblock size 946176 for processor cache size 39424 kB commencing Lanczos iteration (64 threads) memory use: 34833.6 MB linear algebra at 0.0%, ETA 517h 9m786925 dimensions (0.0%, ETA 517h 9m) checkpointing every 110000 dimensions6925 dimensions (0.0%, ETA 524h25m) linear algebra completed 36501 of 52786925 dimensions (0.1%, ETA 511h 1m) 
20200413, 16:15  #92 
Jun 2012
Boulder, CO
181 Posts 
Managed to get it down even more using some more rels and target_density=150...
Code:
Msieve v. 1.54 (SVN 1030M) Sun Apr 12 08:20:16 2020 random seeds: 576e392d b3dd3297 factoring 279441091906891533960233538329194101330014441725960390999007342357855400168211212501842451733654470555853507347821373596296049325886741856611262733847909839472007849262548215431506904992811614738217547 (201 digits) no P1/P+1/ECM available, skipping commencing number field sieve (201digit input) R0: 624948490362327534771821177945073520298 R1: 82975462901273636763037 A0: 7583346797836368579665634952612227928264820069472 A1: 32843208785445240649824828662012034845284 A2: 924819043613201432950422377289849 A3: 1593924972284055429767781 A4: 870570924566536 A5: 11725440 skew 1.00, size 1.030e19, alpha 8.637, combined = 7.246e18 rroots = 3 commencing linear algebra read 44478048 cycles cycles contain 154580983 unique relations read 154580983 relations using 20 quadratic characters above 4294917295 building initial matrix memory use: 22661.5 MB read 44478048 cycles matrix is 44477870 x 44478048 (25232.3 MB) with weight 7643757171 (171.85/col) sparse part has weight 6080766001 (136.71/col) filtering completed in 2 passes matrix is 44477230 x 44477402 (25232.3 MB) with weight 7643724602 (171.86/col) sparse part has weight 6080756102 (136.72/col) matrix starts at (0, 0) matrix is 44477230 x 44477402 (25232.3 MB) with weight 7643724602 (171.86/col) sparse part has weight 6080756102 (136.72/col) saving the first 240 matrix rows for later matrix includes 256 packed rows matrix is 44476990 x 44477402 (22989.4 MB) with weight 5625909934 (126.49/col) sparse part has weight 5314905825 (119.50/col) using block size 8192 and superblock size 608256 for processor cache size 25344 kB commencing Lanczos iteration (72 threads) memory use: 30287.4 MB linear algebra at 0.0%, ETA 306h26m477402 dimensions (0.0%, ETA 306h26m) checkpointing every 150000 dimensions7402 dimensions (0.0%, ETA 302h30m) linear algebra completed 4331593 of 44477402 dimensions (9.7%, ETA 226h 9m) 
20200413, 16:34  #93 
"Curtis"
Feb 2005
Riverside, CA
1000011010110_{2} Posts 
I wouldn't expect 44.5M matrix to take less than half the time of 52.8M!
But, I notice the smaller matrix is smaller than 32GB, while the larger one isn't. I wonder if there is some sort of memoryaddressing change (hardware, or in msieve) that makes matrices bigger than 32GB notably slower. 10 days for a C201 matrix is pretty cool, all the same without MPI! Last fiddled with by VBCurtis on 20200413 at 16:34 Reason: 9 days > 10, noticed 9.7% progress already 
20200418, 00:16  #94  
Jun 2012
2^{2}×23×31 Posts 
Quote:


20200423, 16:02  #95  
Jun 2012
Boulder, CO
181 Posts 
Quote:
Code:
Thu Apr 23 05:37:57 2020 commencing square root phase Thu Apr 23 05:37:57 2020 reading relations for dependency 1 Thu Apr 23 05:38:02 2020 read 22237486 cycles Thu Apr 23 05:39:03 2020 cycles contain 77281922 unique relations Thu Apr 23 05:47:16 2020 read 77281922 relations Thu Apr 23 05:54:59 2020 multiplying 77281922 relations Thu Apr 23 07:44:21 2020 multiply complete, coefficients have about 5053.50 million bits Thu Apr 23 07:44:57 2020 initial square root is modulo 464663 Thu Apr 23 09:43:50 2020 sqrtTime: 14753 Thu Apr 23 09:43:50 2020 p74 factor: 19818998170946101668788934393756203344526033991999579369982582944112958423 Thu Apr 23 09:43:50 2020 p128 factor: 14099657787775648409470845740041938497443954568341176252770693685247040440686642037975014903358304810965340982721425062745417389 Thu Apr 23 09:43:50 2020 elapsed time 04:05:54 

20200423, 19:49  #96 
6809 > 6502
"""""""""""""""""""
Aug 2003
101×103 Posts
2×4,297 Posts 

20200424, 21:09  #97 
Jun 2012
Boulder, CO
265_{8} Posts 
i2140
On i2140 (2 * 3 * c213), I've done a full 50K curves with B1=26e7, and have just started some at B1=29e8; it looks like it might be a tough nut to crack.

20200425, 02:51  #98 
"Serge"
Mar 2008
Phi(4,2^7658614+1)/2
2^{2}×2,281 Posts 

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