- **EdH**
(*https://www.mersenneforum.org/forumdisplay.php?f=152*)

- - **Comparison of GNFS/SNFS With Quartic (Why not to use SNFS with a Quartic)**
(*https://www.mersenneforum.org/showthread.php?t=25434*)

1 Attachment(s)
If quotes, no hyphen. EDIT: Actually, no hyphen at all for that setting.
The biggest mystery for a C175 file is the number of relations to target; but since you have an army of sievers and not much matrix power, I put the relations count a fair bit higher than I think strictly necessary. I think you could get away with 250M relations, but 270 should make a much nicer matrix. |

[QUOTE=VBCurtis;541998]If quotes, no hyphen. EDIT: Actually, no hyphen at all for that setting.
The biggest mystery for a C175 file is the number of relations to target; but since you have an army of sievers and not much matrix power, I put the relations count a fair bit higher than I think strictly necessary. I think you could get away with 250M relations, but 270 should make a much nicer matrix.[/QUOTE] Thanks! I will start one this morning. The "farm" will be short two of its major contributors for now. You use CPU timing data instead of wall clock, don't you? So, the lack of these two machines shouldn't skew the data too much? As to my msieve testing, I did get the option to work using quotes: [code] ../msieve -i comp.n -s comp.dat -l compmsieve.log -nf comp.fb -nc1 "target_density=100" [/code]But, the run failed to build a matrix. I'm trying "=90" to see if that may work. It's taking about two hours per test run. I'm starting each from scratch for consistency, so each run begins with harvesting the CADO-NFS relations and running them through remdups4: [code] Tue Apr 7 00:41:31 2020 commencing full merge Tue Apr 7 01:12:22 2020 memory use: 2013.8 MB Tue Apr 7 01:12:22 2020 found 357523 cycles, need 9113059 Tue Apr 7 01:12:22 2020 too few cycles, matrix probably cannot build [/code]I'm guessing this is quite short and probably would take a lot of raw relations to come up with enough, but am totally outside my knowledge base at this point. Here's the full log (excepting some error -1... lines): [code] Mon Apr 6 23:33:05 2020 Msieve v. 1.54 (SVN 1018) Mon Apr 6 23:33:05 2020 random seeds: b65206a7 370b0e25 Mon Apr 6 23:33:05 2020 factoring 182020007230135528991139915341347872965880609847705423888116875025588252350522154240713634227215698881699545439356408616763969093995140732452346538717063179710306355261 (168 digits) Mon Apr 6 23:33:06 2020 searching for 15-digit factors Mon Apr 6 23:33:06 2020 commencing number field sieve (168-digit input) Mon Apr 6 23:33:06 2020 R0: 3829944921253794893077685127088430174646042802674934480896 Mon Apr 6 23:33:06 2020 R1: -5293955920339377119177015629247762262821197509765625 Mon Apr 6 23:33:06 2020 A0: 1 Mon Apr 6 23:33:06 2020 A1: -1 Mon Apr 6 23:33:06 2020 A2: 1 Mon Apr 6 23:33:06 2020 A3: -1 Mon Apr 6 23:33:06 2020 A4: 1 Mon Apr 6 23:33:06 2020 skew 1.00, size 1.896e-23, alpha 1.694, combined = 5.646e-14 rroots = 0 Mon Apr 6 23:33:06 2020 Mon Apr 6 23:33:06 2020 commencing relation filtering Mon Apr 6 23:33:06 2020 setting target matrix density to 100.0 Mon Apr 6 23:33:06 2020 estimated available RAM is 15926.6 MB Mon Apr 6 23:33:06 2020 commencing duplicate removal, pass 1 Mon Apr 6 23:33:07 2020 error -1 reading relation 70773 . . . Mon Apr 6 23:52:43 2020 error -1 reading relation 184761257 Mon Apr 6 23:52:43 2020 found 7515640 hash collisions in 184734997 relations Mon Apr 6 23:52:51 2020 added 3657741 free relations Mon Apr 6 23:52:51 2020 commencing duplicate removal, pass 2 Mon Apr 6 23:57:12 2020 found 0 duplicates and 188392738 unique relations Mon Apr 6 23:57:12 2020 memory use: 522.4 MB Mon Apr 6 23:57:12 2020 reading ideals above 86573056 Mon Apr 6 23:57:12 2020 commencing singleton removal, initial pass Tue Apr 7 00:10:25 2020 memory use: 5512.0 MB Tue Apr 7 00:10:25 2020 reading all ideals from disk Tue Apr 7 00:10:53 2020 memory use: 4137.7 MB Tue Apr 7 00:11:02 2020 commencing in-memory singleton removal Tue Apr 7 00:11:11 2020 begin with 188392738 relations and 186264462 unique ideals Tue Apr 7 00:12:45 2020 reduce to 95263346 relations and 81126535 ideals in 17 passes Tue Apr 7 00:12:45 2020 max relations containing the same ideal: 34 Tue Apr 7 00:12:51 2020 reading ideals above 720000 Tue Apr 7 00:12:51 2020 commencing singleton removal, initial pass Tue Apr 7 00:22:06 2020 memory use: 2756.0 MB Tue Apr 7 00:22:06 2020 reading all ideals from disk Tue Apr 7 00:22:31 2020 memory use: 3770.9 MB Tue Apr 7 00:22:42 2020 keeping 90681904 ideals with weight <= 200, target excess is 503859 Tue Apr 7 00:22:52 2020 commencing in-memory singleton removal Tue Apr 7 00:23:01 2020 begin with 95263346 relations and 90681904 unique ideals Tue Apr 7 00:23:51 2020 reduce to 95262520 relations and 90681076 ideals in 6 passes Tue Apr 7 00:23:51 2020 max relations containing the same ideal: 200 Tue Apr 7 00:24:34 2020 removing 4376947 relations and 3976948 ideals in 400000 cliques Tue Apr 7 00:24:36 2020 commencing in-memory singleton removal Tue Apr 7 00:24:45 2020 begin with 90885573 relations and 90681076 unique ideals Tue Apr 7 00:26:04 2020 reduce to 90727470 relations and 86544948 ideals in 10 passes Tue Apr 7 00:26:04 2020 max relations containing the same ideal: 199 Tue Apr 7 00:26:46 2020 removing 3205222 relations and 2805222 ideals in 400000 cliques Tue Apr 7 00:26:47 2020 commencing in-memory singleton removal Tue Apr 7 00:26:55 2020 begin with 87522248 relations and 86544948 unique ideals Tue Apr 7 00:28:04 2020 reduce to 87430757 relations and 83647732 ideals in 9 passes Tue Apr 7 00:28:04 2020 max relations containing the same ideal: 197 Tue Apr 7 00:28:44 2020 removing 2831556 relations and 2431556 ideals in 400000 cliques Tue Apr 7 00:28:45 2020 commencing in-memory singleton removal Tue Apr 7 00:28:53 2020 begin with 84599201 relations and 83647732 unique ideals Tue Apr 7 00:29:45 2020 reduce to 84524726 relations and 81141323 ideals in 7 passes Tue Apr 7 00:29:45 2020 max relations containing the same ideal: 193 Tue Apr 7 00:30:23 2020 removing 2616153 relations and 2216153 ideals in 400000 cliques Tue Apr 7 00:30:25 2020 commencing in-memory singleton removal Tue Apr 7 00:30:32 2020 begin with 81908573 relations and 81141323 unique ideals Tue Apr 7 00:31:22 2020 reduce to 81842732 relations and 78858987 ideals in 7 passes Tue Apr 7 00:31:22 2020 max relations containing the same ideal: 190 Tue Apr 7 00:31:59 2020 removing 2476265 relations and 2076265 ideals in 400000 cliques Tue Apr 7 00:32:01 2020 commencing in-memory singleton removal Tue Apr 7 00:32:08 2020 begin with 79366467 relations and 78858987 unique ideals Tue Apr 7 00:32:56 2020 reduce to 79305871 relations and 76721826 ideals in 7 passes Tue Apr 7 00:32:56 2020 max relations containing the same ideal: 189 Tue Apr 7 00:33:32 2020 removing 2372749 relations and 1972749 ideals in 400000 cliques Tue Apr 7 00:33:33 2020 commencing in-memory singleton removal Tue Apr 7 00:33:41 2020 begin with 76933122 relations and 76721826 unique ideals Tue Apr 7 00:34:27 2020 reduce to 76874240 relations and 74689898 ideals in 7 passes Tue Apr 7 00:34:27 2020 max relations containing the same ideal: 182 Tue Apr 7 00:35:02 2020 removing 2291357 relations and 1891357 ideals in 400000 cliques Tue Apr 7 00:35:03 2020 commencing in-memory singleton removal Tue Apr 7 00:35:10 2020 begin with 74582883 relations and 74689898 unique ideals Tue Apr 7 00:35:56 2020 reduce to 74526812 relations and 72742209 ideals in 7 passes Tue Apr 7 00:35:56 2020 max relations containing the same ideal: 179 Tue Apr 7 00:36:29 2020 removing 2226430 relations and 1826430 ideals in 400000 cliques Tue Apr 7 00:36:31 2020 commencing in-memory singleton removal Tue Apr 7 00:36:37 2020 begin with 72300382 relations and 72742209 unique ideals Tue Apr 7 00:37:21 2020 reduce to 72244780 relations and 70859867 ideals in 7 passes Tue Apr 7 00:37:21 2020 max relations containing the same ideal: 178 Tue Apr 7 00:37:53 2020 removing 2176939 relations and 1776939 ideals in 400000 cliques Tue Apr 7 00:37:55 2020 commencing in-memory singleton removal Tue Apr 7 00:38:01 2020 begin with 70067841 relations and 70859867 unique ideals Tue Apr 7 00:38:44 2020 reduce to 70012791 relations and 69027605 ideals in 7 passes Tue Apr 7 00:38:44 2020 max relations containing the same ideal: 171 Tue Apr 7 00:39:15 2020 removing 2138900 relations and 1738900 ideals in 400000 cliques Tue Apr 7 00:39:16 2020 commencing in-memory singleton removal Tue Apr 7 00:39:23 2020 begin with 67873891 relations and 69027605 unique ideals Tue Apr 7 00:40:04 2020 reduce to 67818603 relations and 67233106 ideals in 7 passes Tue Apr 7 00:40:04 2020 max relations containing the same ideal: 166 Tue Apr 7 00:40:45 2020 relations with 0 large ideals: 40956 Tue Apr 7 00:40:45 2020 relations with 1 large ideals: 4638 Tue Apr 7 00:40:45 2020 relations with 2 large ideals: 50650 Tue Apr 7 00:40:45 2020 relations with 3 large ideals: 450368 Tue Apr 7 00:40:45 2020 relations with 4 large ideals: 2400538 Tue Apr 7 00:40:45 2020 relations with 5 large ideals: 10328086 Tue Apr 7 00:40:45 2020 relations with 6 large ideals: 15188890 Tue Apr 7 00:40:45 2020 relations with 7+ large ideals: 39354477 Tue Apr 7 00:40:45 2020 commencing 2-way merge Tue Apr 7 00:41:31 2020 reduce to 44136312 relation sets and 43550815 unique ideals Tue Apr 7 00:41:31 2020 commencing full merge Tue Apr 7 01:12:22 2020 memory use: 2013.8 MB Tue Apr 7 01:12:22 2020 found 357523 cycles, need 9113059 Tue Apr 7 01:12:22 2020 too few cycles, matrix probably cannot build Tue Apr 7 01:12:22 2020 Tue Apr 7 01:12:22 2020 Tue Apr 7 01:12:22 2020 Msieve v. 1.54 (SVN 1018) Tue Apr 7 01:12:22 2020 random seeds: ac21e5bf ac66126b Tue Apr 7 01:12:22 2020 factoring 182020007230135528991139915341347872965880609847705423888116875025588252350522154240713634227215698881699545439356408616763969093995140732452346538717063179710306355261 (168 digits) Tue Apr 7 01:12:23 2020 searching for 15-digit factors Tue Apr 7 01:12:23 2020 commencing number field sieve (168-digit input) Tue Apr 7 01:12:23 2020 R0: 3829944921253794893077685127088430174646042802674934480896 Tue Apr 7 01:12:23 2020 R1: -5293955920339377119177015629247762262821197509765625 Tue Apr 7 01:12:23 2020 A0: 1 Tue Apr 7 01:12:23 2020 A1: -1 Tue Apr 7 01:12:23 2020 A2: 1 Tue Apr 7 01:12:23 2020 A3: -1 Tue Apr 7 01:12:23 2020 A4: 1 Tue Apr 7 01:12:23 2020 skew 1.00, size 1.896e-23, alpha 1.694, combined = 5.646e-14 rroots = 0 Tue Apr 7 01:12:23 2020 Tue Apr 7 01:12:23 2020 commencing linear algebra Tue Apr 7 01:12:23 2020 error: read_cycles can't open cycle file [/code]I intend to keep this full set of relevant files and maybe I'll add some more relations later - maybe even do some more Colab playing. |

I ran with t_d=90 and it built a matrix. Here is the log (skipping several thousand error -1 lines):
[code] Tue Apr 7 07:23:39 2020 Msieve v. 1.54 (SVN 1018) Tue Apr 7 07:23:39 2020 random seeds: 6d359eb0 a5d0a6e2 Tue Apr 7 07:23:39 2020 factoring 182020007230135528991139915341347872965880609847705423888116875025588252350522154240713634227215698881699545439356408616763969093995140732452346538717063179710306355261 (168 digits) Tue Apr 7 07:23:39 2020 searching for 15-digit factors Tue Apr 7 07:23:40 2020 commencing number field sieve (168-digit input) Tue Apr 7 07:23:40 2020 R0: 3829944921253794893077685127088430174646042802674934480896 Tue Apr 7 07:23:40 2020 R1: -5293955920339377119177015629247762262821197509765625 Tue Apr 7 07:23:40 2020 A0: 1 Tue Apr 7 07:23:40 2020 A1: -1 Tue Apr 7 07:23:40 2020 A2: 1 Tue Apr 7 07:23:40 2020 A3: -1 Tue Apr 7 07:23:40 2020 A4: 1 Tue Apr 7 07:23:40 2020 skew 1.00, size 1.896e-23, alpha 1.694, combined = 5.646e-14 rroots = 0 Tue Apr 7 07:23:40 2020 Tue Apr 7 07:23:40 2020 commencing relation filtering Tue Apr 7 07:23:40 2020 setting target matrix density to 90.0 Tue Apr 7 07:23:40 2020 estimated available RAM is 15926.6 MB Tue Apr 7 07:23:40 2020 commencing duplicate removal, pass 1 Tue Apr 7 07:23:40 2020 error -1 reading relation 70773 . . . Tue Apr 7 07:44:27 2020 error -1 reading relation 184761257 Tue Apr 7 07:44:27 2020 found 7515640 hash collisions in 184734997 relations Tue Apr 7 07:44:35 2020 added 3657741 free relations Tue Apr 7 07:44:35 2020 commencing duplicate removal, pass 2 Tue Apr 7 07:49:47 2020 found 0 duplicates and 188392738 unique relations Tue Apr 7 07:49:47 2020 memory use: 522.4 MB Tue Apr 7 07:49:47 2020 reading ideals above 86573056 Tue Apr 7 07:49:47 2020 commencing singleton removal, initial pass Tue Apr 7 08:05:21 2020 memory use: 5512.0 MB Tue Apr 7 08:05:21 2020 reading all ideals from disk Tue Apr 7 08:06:07 2020 memory use: 4137.7 MB Tue Apr 7 08:06:16 2020 commencing in-memory singleton removal Tue Apr 7 08:06:24 2020 begin with 188392738 relations and 186264462 unique ideals Tue Apr 7 08:07:59 2020 reduce to 95263346 relations and 81126535 ideals in 17 passes Tue Apr 7 08:07:59 2020 max relations containing the same ideal: 34 Tue Apr 7 08:08:05 2020 reading ideals above 720000 Tue Apr 7 08:08:05 2020 commencing singleton removal, initial pass Tue Apr 7 08:17:23 2020 memory use: 2756.0 MB Tue Apr 7 08:17:23 2020 reading all ideals from disk Tue Apr 7 08:17:49 2020 memory use: 3770.9 MB Tue Apr 7 08:17:59 2020 keeping 90681904 ideals with weight <= 200, target excess is 503859 Tue Apr 7 08:18:10 2020 commencing in-memory singleton removal Tue Apr 7 08:18:19 2020 begin with 95263346 relations and 90681904 unique ideals Tue Apr 7 08:19:09 2020 reduce to 95262520 relations and 90681076 ideals in 6 passes Tue Apr 7 08:19:09 2020 max relations containing the same ideal: 200 Tue Apr 7 08:19:52 2020 removing 4376947 relations and 3976948 ideals in 400000 cliques Tue Apr 7 08:19:54 2020 commencing in-memory singleton removal Tue Apr 7 08:20:03 2020 begin with 90885573 relations and 90681076 unique ideals Tue Apr 7 08:21:23 2020 reduce to 90727470 relations and 86544948 ideals in 10 passes Tue Apr 7 08:21:23 2020 max relations containing the same ideal: 199 Tue Apr 7 08:22:04 2020 removing 3205222 relations and 2805222 ideals in 400000 cliques Tue Apr 7 08:22:06 2020 commencing in-memory singleton removal Tue Apr 7 08:22:14 2020 begin with 87522248 relations and 86544948 unique ideals Tue Apr 7 08:23:23 2020 reduce to 87430757 relations and 83647732 ideals in 9 passes Tue Apr 7 08:23:23 2020 max relations containing the same ideal: 197 Tue Apr 7 08:24:02 2020 removing 2831556 relations and 2431556 ideals in 400000 cliques Tue Apr 7 08:24:04 2020 commencing in-memory singleton removal Tue Apr 7 08:24:12 2020 begin with 84599201 relations and 83647732 unique ideals Tue Apr 7 08:25:03 2020 reduce to 84524726 relations and 81141323 ideals in 7 passes Tue Apr 7 08:25:03 2020 max relations containing the same ideal: 193 Tue Apr 7 08:25:42 2020 removing 2616153 relations and 2216153 ideals in 400000 cliques Tue Apr 7 08:25:43 2020 commencing in-memory singleton removal Tue Apr 7 08:25:51 2020 begin with 81908573 relations and 81141323 unique ideals Tue Apr 7 08:26:41 2020 reduce to 81842732 relations and 78858987 ideals in 7 passes Tue Apr 7 08:26:41 2020 max relations containing the same ideal: 190 Tue Apr 7 08:27:18 2020 removing 2476265 relations and 2076265 ideals in 400000 cliques Tue Apr 7 08:27:19 2020 commencing in-memory singleton removal Tue Apr 7 08:27:26 2020 begin with 79366467 relations and 78858987 unique ideals Tue Apr 7 08:28:15 2020 reduce to 79305871 relations and 76721826 ideals in 7 passes Tue Apr 7 08:28:15 2020 max relations containing the same ideal: 189 Tue Apr 7 08:28:51 2020 removing 2372749 relations and 1972749 ideals in 400000 cliques Tue Apr 7 08:28:52 2020 commencing in-memory singleton removal Tue Apr 7 08:28:59 2020 begin with 76933122 relations and 76721826 unique ideals Tue Apr 7 08:29:46 2020 reduce to 76874240 relations and 74689898 ideals in 7 passes Tue Apr 7 08:29:46 2020 max relations containing the same ideal: 182 Tue Apr 7 08:30:21 2020 removing 2291357 relations and 1891357 ideals in 400000 cliques Tue Apr 7 08:30:22 2020 commencing in-memory singleton removal Tue Apr 7 08:30:29 2020 begin with 74582883 relations and 74689898 unique ideals Tue Apr 7 08:31:14 2020 reduce to 74526812 relations and 72742209 ideals in 7 passes Tue Apr 7 08:31:14 2020 max relations containing the same ideal: 179 Tue Apr 7 08:31:48 2020 removing 2226430 relations and 1826430 ideals in 400000 cliques Tue Apr 7 08:31:49 2020 commencing in-memory singleton removal Tue Apr 7 08:31:56 2020 begin with 72300382 relations and 72742209 unique ideals Tue Apr 7 08:32:39 2020 reduce to 72244780 relations and 70859867 ideals in 7 passes Tue Apr 7 08:32:39 2020 max relations containing the same ideal: 178 Tue Apr 7 08:33:12 2020 removing 2176939 relations and 1776939 ideals in 400000 cliques Tue Apr 7 08:33:13 2020 commencing in-memory singleton removal Tue Apr 7 08:33:20 2020 begin with 70067841 relations and 70859867 unique ideals Tue Apr 7 08:34:02 2020 reduce to 70012791 relations and 69027605 ideals in 7 passes Tue Apr 7 08:34:02 2020 max relations containing the same ideal: 171 Tue Apr 7 08:34:34 2020 removing 2138900 relations and 1738900 ideals in 400000 cliques Tue Apr 7 08:34:35 2020 commencing in-memory singleton removal Tue Apr 7 08:34:41 2020 begin with 67873891 relations and 69027605 unique ideals Tue Apr 7 08:35:22 2020 reduce to 67818603 relations and 67233106 ideals in 7 passes Tue Apr 7 08:35:22 2020 max relations containing the same ideal: 166 Tue Apr 7 08:36:03 2020 relations with 0 large ideals: 40956 Tue Apr 7 08:36:03 2020 relations with 1 large ideals: 4638 Tue Apr 7 08:36:03 2020 relations with 2 large ideals: 50650 Tue Apr 7 08:36:03 2020 relations with 3 large ideals: 450368 Tue Apr 7 08:36:03 2020 relations with 4 large ideals: 2400538 Tue Apr 7 08:36:03 2020 relations with 5 large ideals: 10328086 Tue Apr 7 08:36:03 2020 relations with 6 large ideals: 15188890 Tue Apr 7 08:36:03 2020 relations with 7+ large ideals: 39354477 Tue Apr 7 08:36:03 2020 commencing 2-way merge Tue Apr 7 08:36:49 2020 reduce to 44136312 relation sets and 43550815 unique ideals Tue Apr 7 08:36:49 2020 commencing full merge Tue Apr 7 08:51:43 2020 memory use: 5047.2 MB Tue Apr 7 08:51:47 2020 found 21133157 cycles, need 21085015 Tue Apr 7 08:51:54 2020 weight of 21085015 cycles is about 1897713332 (90.00/cycle) Tue Apr 7 08:51:54 2020 distribution of cycle lengths: Tue Apr 7 08:51:54 2020 1 relations: 1624365 Tue Apr 7 08:51:54 2020 2 relations: 2016040 Tue Apr 7 08:51:54 2020 3 relations: 2165972 Tue Apr 7 08:51:54 2020 4 relations: 2053169 Tue Apr 7 08:51:54 2020 5 relations: 1873240 Tue Apr 7 08:51:54 2020 6 relations: 1684886 Tue Apr 7 08:51:54 2020 7 relations: 1479454 Tue Apr 7 08:51:54 2020 8 relations: 1301221 Tue Apr 7 08:51:54 2020 9 relations: 1144445 Tue Apr 7 08:51:54 2020 10+ relations: 5742223 Tue Apr 7 08:51:54 2020 heaviest cycle: 28 relations Tue Apr 7 08:52:00 2020 commencing cycle optimization Tue Apr 7 08:52:34 2020 start with 150081401 relations Tue Apr 7 08:57:38 2020 pruned 4616897 relations Tue Apr 7 08:57:40 2020 memory use: 4375.4 MB Tue Apr 7 08:57:40 2020 distribution of cycle lengths: Tue Apr 7 08:57:40 2020 1 relations: 1624365 Tue Apr 7 08:57:40 2020 2 relations: 2057868 Tue Apr 7 08:57:40 2020 3 relations: 2251527 Tue Apr 7 08:57:40 2020 4 relations: 2115999 Tue Apr 7 08:57:40 2020 5 relations: 1936593 Tue Apr 7 08:57:40 2020 6 relations: 1722934 Tue Apr 7 08:57:40 2020 7 relations: 1507973 Tue Apr 7 08:57:40 2020 8 relations: 1314636 Tue Apr 7 08:57:40 2020 9 relations: 1151126 Tue Apr 7 08:57:40 2020 10+ relations: 5401994 Tue Apr 7 08:57:40 2020 heaviest cycle: 28 relations Tue Apr 7 08:58:14 2020 RelProcTime: 5674 Tue Apr 7 08:58:23 2020 elapsed time 01:34:44 Tue Apr 7 08:58:23 2020 Tue Apr 7 08:58:23 2020 Tue Apr 7 08:58:23 2020 Msieve v. 1.54 (SVN 1018) Tue Apr 7 08:58:23 2020 random seeds: 94f9f8b7 d3e43f04 Tue Apr 7 08:58:23 2020 factoring 182020007230135528991139915341347872965880609847705423888116875025588252350522154240713634227215698881699545439356408616763969093995140732452346538717063179710306355261 (168 digits) Tue Apr 7 08:58:24 2020 searching for 15-digit factors Tue Apr 7 08:58:24 2020 commencing number field sieve (168-digit input) Tue Apr 7 08:58:24 2020 R0: 3829944921253794893077685127088430174646042802674934480896 Tue Apr 7 08:58:24 2020 R1: -5293955920339377119177015629247762262821197509765625 Tue Apr 7 08:58:24 2020 A0: 1 Tue Apr 7 08:58:24 2020 A1: -1 Tue Apr 7 08:58:24 2020 A2: 1 Tue Apr 7 08:58:24 2020 A3: -1 Tue Apr 7 08:58:24 2020 A4: 1 Tue Apr 7 08:58:24 2020 skew 1.00, size 1.896e-23, alpha 1.694, combined = 5.646e-14 rroots = 0 Tue Apr 7 08:58:24 2020 Tue Apr 7 08:58:24 2020 commencing linear algebra Tue Apr 7 08:58:26 2020 read 21085015 cycles Tue Apr 7 08:59:05 2020 cycles contain 67389966 unique relations Tue Apr 7 09:04:35 2020 read 67389966 relations Tue Apr 7 09:06:30 2020 using 20 quadratic characters above 4294917295 Tue Apr 7 09:11:15 2020 building initial matrix Tue Apr 7 09:20:58 2020 memory use: 8502.0 MB Tue Apr 7 09:21:22 2020 read 21085015 cycles Tue Apr 7 09:21:26 2020 matrix is 21084838 x 21085015 (7847.5 MB) with weight 2256349165 (107.01/col) Tue Apr 7 09:21:26 2020 sparse part has weight 1825241089 (86.57/col) Tue Apr 7 09:26:10 2020 filtering completed in 2 passes Tue Apr 7 09:26:14 2020 matrix is 21082328 x 21082505 (7847.3 MB) with weight 2256279964 (107.02/col) Tue Apr 7 09:26:14 2020 sparse part has weight 1825223884 (86.58/col) Tue Apr 7 09:28:26 2020 matrix starts at (0, 0) Tue Apr 7 09:28:29 2020 matrix is 21082328 x 21082505 (7847.3 MB) with weight 2256279964 (107.02/col) Tue Apr 7 09:28:29 2020 sparse part has weight 1825223884 (86.58/col) Tue Apr 7 09:28:29 2020 saving the first 48 matrix rows for later Tue Apr 7 09:28:32 2020 matrix includes 64 packed rows Tue Apr 7 09:28:36 2020 matrix is 21082280 x 21082505 (7503.4 MB) with weight 1887190085 (89.51/col) Tue Apr 7 09:28:36 2020 sparse part has weight 1756151513 (83.30/col) Tue Apr 7 09:28:36 2020 using block size 8192 and superblock size 786432 for processor cache size 8192 kB Tue Apr 7 09:30:18 2020 commencing Lanczos iteration (8 threads) Tue Apr 7 09:30:18 2020 memory use: 6406.3 MB Tue Apr 7 09:32:00 2020 linear algebra at 0.0%, ETA 375h10m [/code]target_density=90 appears to be saving over 45 hours of LA at a cost of less than 24 hours of sieving, so like you mentioned, a "free day." I think I'll hang onto the relations and other needed files and play with greater densities later on. |

Continuation of Discussion MovedI went ahead and moved a bunch of the posts to a new thread:
[URL="https://www.mersenneforum.org/showthread.php?t=25479"][B]Some CADO-NFS Work At Around 175-180 Decimal Digits[/B][/URL] All further posts should be made there. If I have caused some trouble, sorry. Let me know if more work should be done to make this look better. |

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