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2020-04-18, 20:45   #45
VBCurtis

"Curtis"
Feb 2005
Riverside, CA

5,011 Posts

Changes to this file versus the last file of the same name:
Added 25% to poly select range (because c177, same range I used for Charybdis' C177).
Reduced both lim's by 10M. You had Q-final of 93M while using I=15, and smaller lim's often yield a smaller matrix. If someone uses A=28 instead, they would choose bigger lim's (as we did for Charybdis). Yield drops a tiny bit when lim's are reduced, effect of sec/rel unclear (there's a fastest choice for lim, we don't know what it is).
Increased both lambdas by 0.015. This will improve yield quite a bit, but will increase the number of relations needed because the added yield comes from splitting larger cofactors. It's unclear whether that tradeoff improves or hurts sieve time- that's why we test!
Set rels_wanted to 265M. Just a few posts ago I said 260 would be enough, but then I increased lambdas.
Attached Files
 Edparams.c175.txt (2.0 KB, 157 views)

2020-04-18, 21:12   #46
charybdis

Apr 2020

5×101 Posts

Quote:
 Originally Posted by EdH Thanks. I've reserved 5+2,415 (12586...71 <177 dd>) for this next run.
Might want to check you've got the right number, those digits don't match what I'm seeing?

Currently at 287M relations on my 32/32LP run, should reach the initial target of 325M tomorrow. If 325M at 32/32 is indeed comparable with 250M at 31/32, then it looks like 32/32 may be very slightly better, but I'll hold off on giving a full opinion on that until I've got a matrix.

Last fiddled with by charybdis on 2020-04-18 at 21:13

2020-04-18, 21:25   #47
EdH

"Ed Hall"
Dec 2009

2×2,017 Posts

Quote:
 Originally Posted by charybdis Might want to check you've got the right number, those digits don't match what I'm seeing? Currently at 287M relations on my 32/32LP run, should reach the initial target of 325M tomorrow. If 325M at 32/32 is indeed comparable with 250M at 31/32, then it looks like 32/32 may be very slightly better, but I'll hold off on giving a full opinion on that until I've got a matrix.
Quite right! Thanks! I've reserved 5+2,415, but the composite is:
Code:
572104397924416007907491497280028964417584573249344846496494935688320410664593694835173261723655611747846299032109095649324060656666752385406703309173809568221352517003465647761
I don't think I'll bother trying to cover the mistake with edits.

2020-04-18, 21:28   #48
EdH

"Ed Hall"
Dec 2009

FC216 Posts

Quote:
 Originally Posted by VBCurtis Changes to this file versus the last file of the same name: Added 25% to poly select range (because c177, same range I used for Charybdis' C177). Reduced both lim's by 10M. You had Q-final of 93M while using I=15, and smaller lim's often yield a smaller matrix. If someone uses A=28 instead, they would choose bigger lim's (as we did for Charybdis). Yield drops a tiny bit when lim's are reduced, effect of sec/rel unclear (there's a fastest choice for lim, we don't know what it is). Increased both lambdas by 0.015. This will improve yield quite a bit, but will increase the number of relations needed because the added yield comes from splitting larger cofactors. It's unclear whether that tradeoff improves or hurts sieve time- that's why we test! Set rels_wanted to 265M. Just a few posts ago I said 260 would be enough, but then I increased lambdas.
Thanks! I will keep you posted. What density should I initially try? Or, should I just let msieve choose its default?

 2020-04-19, 01:28 #49 VBCurtis     "Curtis" Feb 2005 Riverside, CA 5,011 Posts I'd try msieve density 100, failing that 90. I would sieve more on a job this size before I'd run a matrix that didn't build at 90. My personal standard is density 84 above GNFS140, 90 above GNFS150, 100 above 160, .... up to density 120 for big jobs.
2020-04-19, 02:52   #50
EdH

"Ed Hall"
Dec 2009

FC216 Posts

Quote:
 Originally Posted by VBCurtis I'd try msieve density 100, failing that 90. I would sieve more on a job this size before I'd run a matrix that didn't build at 90. My personal standard is density 84 above GNFS140, 90 above GNFS150, 100 above 160, .... up to density 120 for big jobs.
Thanks!

I've forgotten (again) what to do about this. I could go find my notes on it, but for now I'm going to leave it to see what it looks like in the morning.

Server:
Code:
PID7663 2020-04-18 21:55:22,267 Info:Polynomial Selection (size optimized): Marking workunit c175_polyselect1_1406160-1407840 as ok (99.8% => ETA Sat Apr 18 21:55:53 2020)
PID7663 2020-04-18 21:55:58,329 Debug:Polynomial Selection (size optimized): Timeout check took 0.000260 s, found 0 WUs
. . .
PID7663 2020-04-18 22:43:02,590 Debug:Polynomial Selection (size optimized): Timeout check took 0.000260 s, found 0 WUs
PID7663 2020-04-18 22:44:02,680 Debug:Polynomial Selection (size optimized): Timeout check took 0.000253 s, found 0 WUs
Clients:
Code:
2020-04-18 22:51:29,661 - ERROR:root:Download failed, URL error: HTTP Error 404: No work available
2020-04-18 22:51:29,661 - ERROR:root:Waiting 10.0 seconds before retrying (I have been waiting since 3400.0 seconds)

 2020-04-19, 13:42 #51 EdH     "Ed Hall" Dec 2009 Adirondack Mtns 77028 Posts I guess after a couple hours it figured it out: Code: 2020-04-19 00:22:06,693 - ERROR:root:Download failed, URL error: HTTP Error 404: No work available 2020-04-19 00:22:06,693 - ERROR:root:Waiting 10.0 seconds before retrying (I have been waiting since 8830.0 seconds) 2020-04-19 00:22:16,726 - INFO:root:Opened URL http://math79.local:13531/cgi-bin/getwu?clientid=math97.math97 after 8840.0 seconds wait 2020-04-19 00:22:16,726 - INFO:root:Downloading http://math79.local:13531/c175.polyselect2.raw_60 to download/c175.polyselect2.raw_60 (cafile = None) 2020-04-19 00:22:16,735 - INFO:root:Result file math97.math97.work/c175.polyselect2.opt_60 does not exist 2020-04-19 00:22:16,736 - INFO:root:Overriding argument -t 2 by -t 8 in command line (substitution t 8) 2020-04-19 00:22:16,736 - INFO:root:Running 'build/math97/polyselect/polyselect_ropt' -t 8 -inputpolys 'download/c175.polyselect2.raw_60' -ropteffort 35.0 -area 268435456000000.0 -Bf 4294967296.0 -Bg 2147483648.0 > 'math97.math97.work/c175.polyselect2.opt_60' 2020-04-19 00:22:16,737 - INFO:root:[Sun Apr 19 00:22:16 2020] Subprocess has PID 5693 2020-04-19 00:31:33,484 - INFO:root:Attaching file math97.math97.work/c175.polyselect2.opt_60 to upload 2020-04-19 00:31:33,484 - INFO:root:Attaching stderr for command 0 to upload 2020-04-19 00:31:33,485 - INFO:root:Sending result for workunit c175_polyselect2_60 to http://math79.local:13531/cgi-bin/upload.py
 2020-04-19, 17:47 #52 charybdis     Apr 2020 5×101 Posts 325M relations weren't quite enough to get a matrix even at TD 90, but a few million more did it: Code: Sun Apr 19 16:45:41 2020 commencing relation filtering Sun Apr 19 16:45:41 2020 estimated available RAM is 15845.4 MB Sun Apr 19 16:45:41 2020 commencing duplicate removal, pass 1 (errors) Sun Apr 19 17:19:51 2020 found 102448637 hash collisions in 330667512 relations Sun Apr 19 17:20:12 2020 commencing duplicate removal, pass 2 Sun Apr 19 17:26:36 2020 found 139709136 duplicates and 190958376 unique relations Sun Apr 19 17:26:36 2020 memory use: 2387.0 MB Sun Apr 19 17:26:37 2020 reading ideals above 179765248 Sun Apr 19 17:26:37 2020 commencing singleton removal, initial pass Sun Apr 19 17:41:48 2020 memory use: 5512.0 MB Sun Apr 19 17:41:48 2020 reading all ideals from disk Sun Apr 19 17:42:05 2020 memory use: 3105.6 MB Sun Apr 19 17:42:10 2020 commencing in-memory singleton removal Sun Apr 19 17:42:14 2020 begin with 190958376 relations and 190440858 unique ideals Sun Apr 19 17:42:49 2020 reduce to 67714925 relations and 46908602 ideals in 18 passes Sun Apr 19 17:42:49 2020 max relations containing the same ideal: 18 Sun Apr 19 17:42:54 2020 reading ideals above 720000 Sun Apr 19 17:42:54 2020 commencing singleton removal, initial pass Sun Apr 19 17:52:48 2020 memory use: 1506.0 MB Sun Apr 19 17:52:48 2020 reading all ideals from disk Sun Apr 19 17:53:02 2020 memory use: 2712.7 MB Sun Apr 19 17:53:08 2020 keeping 66505989 ideals with weight <= 200, target excess is 362159 Sun Apr 19 17:53:13 2020 commencing in-memory singleton removal Sun Apr 19 17:53:17 2020 begin with 67714927 relations and 66505989 unique ideals Sun Apr 19 17:54:20 2020 reduce to 66898598 relations and 65688193 ideals in 15 passes Sun Apr 19 17:54:20 2020 max relations containing the same ideal: 200 Sun Apr 19 17:54:45 2020 removing 4307227 relations and 3912077 ideals in 395150 cliques Sun Apr 19 17:54:46 2020 commencing in-memory singleton removal Sun Apr 19 17:54:50 2020 begin with 62591371 relations and 65688193 unique ideals Sun Apr 19 17:55:33 2020 reduce to 62380577 relations and 61563592 ideals in 11 passes Sun Apr 19 17:55:33 2020 max relations containing the same ideal: 196 Sun Apr 19 17:55:57 2020 removing 3199408 relations and 2804258 ideals in 395150 cliques Sun Apr 19 17:55:58 2020 commencing in-memory singleton removal Sun Apr 19 17:56:02 2020 begin with 59181169 relations and 61563592 unique ideals Sun Apr 19 17:56:35 2020 reduce to 59051063 relations and 58628363 ideals in 9 passes Sun Apr 19 17:56:35 2020 max relations containing the same ideal: 191 Sun Apr 19 17:57:05 2020 relations with 0 large ideals: 1246 Sun Apr 19 17:57:05 2020 relations with 1 large ideals: 1656 Sun Apr 19 17:57:05 2020 relations with 2 large ideals: 24589 Sun Apr 19 17:57:05 2020 relations with 3 large ideals: 240980 Sun Apr 19 17:57:05 2020 relations with 4 large ideals: 1367864 Sun Apr 19 17:57:05 2020 relations with 5 large ideals: 4791557 Sun Apr 19 17:57:05 2020 relations with 6 large ideals: 10864030 Sun Apr 19 17:57:05 2020 relations with 7+ large ideals: 41759141 Sun Apr 19 17:57:05 2020 commencing 2-way merge Sun Apr 19 17:57:36 2020 reduce to 34679367 relation sets and 34256667 unique ideals Sun Apr 19 17:57:36 2020 commencing full merge Sun Apr 19 18:05:41 2020 memory use: 4120.6 MB Sun Apr 19 18:05:43 2020 found 17244214 cycles, need 17220867 Sun Apr 19 18:05:47 2020 weight of 17220867 cycles is about 1550339153 (90.03/cycle) Sun Apr 19 18:05:47 2020 distribution of cycle lengths: Sun Apr 19 18:05:47 2020 1 relations: 2022334 Sun Apr 19 18:05:47 2020 2 relations: 1926744 Sun Apr 19 18:05:47 2020 3 relations: 1913590 Sun Apr 19 18:05:47 2020 4 relations: 1730002 Sun Apr 19 18:05:47 2020 5 relations: 1548025 Sun Apr 19 18:05:47 2020 6 relations: 1328489 Sun Apr 19 18:05:47 2020 7 relations: 1121823 Sun Apr 19 18:05:47 2020 8 relations: 968705 Sun Apr 19 18:05:47 2020 9 relations: 819466 Sun Apr 19 18:05:47 2020 10+ relations: 3841689 Sun Apr 19 18:05:47 2020 heaviest cycle: 28 relations Sun Apr 19 18:05:50 2020 commencing cycle optimization Sun Apr 19 18:06:11 2020 start with 110652123 relations Sun Apr 19 18:08:19 2020 pruned 2790485 relations Sun Apr 19 18:08:20 2020 memory use: 3551.9 MB Sun Apr 19 18:08:20 2020 distribution of cycle lengths: Sun Apr 19 18:08:20 2020 1 relations: 2022334 Sun Apr 19 18:08:20 2020 2 relations: 1972975 Sun Apr 19 18:08:20 2020 3 relations: 1982743 Sun Apr 19 18:08:20 2020 4 relations: 1771497 Sun Apr 19 18:08:20 2020 5 relations: 1583946 Sun Apr 19 18:08:20 2020 6 relations: 1341882 Sun Apr 19 18:08:20 2020 7 relations: 1131207 Sun Apr 19 18:08:20 2020 8 relations: 965861 Sun Apr 19 18:08:20 2020 9 relations: 810926 Sun Apr 19 18:08:20 2020 10+ relations: 3637496 Sun Apr 19 18:08:20 2020 heaviest cycle: 28 relations Sun Apr 19 18:08:46 2020 RelProcTime: 4985 Sun Apr 19 18:08:51 2020 Sun Apr 19 18:08:51 2020 commencing linear algebra Sun Apr 19 18:08:52 2020 read 17220867 cycles Sun Apr 19 18:09:17 2020 cycles contain 58542363 unique relations Sun Apr 19 18:16:26 2020 read 58542363 relations Sun Apr 19 18:17:36 2020 using 20 quadratic characters above 4294917295 Sun Apr 19 18:21:21 2020 building initial matrix Sun Apr 19 18:29:34 2020 memory use: 8134.6 MB Sun Apr 19 18:29:47 2020 read 17220867 cycles Sun Apr 19 18:29:49 2020 matrix is 17220690 x 17220867 (6464.0 MB) with weight 2013780097 (116.94/col) Sun Apr 19 18:29:49 2020 sparse part has weight 1487861006 (86.40/col) Sun Apr 19 18:32:21 2020 filtering completed in 2 passes Sun Apr 19 18:32:24 2020 matrix is 17217913 x 17218089 (6463.8 MB) with weight 2013661326 (116.95/col) Sun Apr 19 18:32:24 2020 sparse part has weight 1487837862 (86.41/col) Sun Apr 19 18:33:43 2020 matrix starts at (0, 0) Sun Apr 19 18:33:46 2020 matrix is 17217913 x 17218089 (6463.8 MB) with weight 2013661326 (116.95/col) Sun Apr 19 18:33:46 2020 sparse part has weight 1487837862 (86.41/col) Sun Apr 19 18:33:46 2020 saving the first 48 matrix rows for later Sun Apr 19 18:33:48 2020 matrix includes 64 packed rows Sun Apr 19 18:33:49 2020 matrix is 17217865 x 17218089 (6281.6 MB) with weight 1663992024 (96.64/col) Sun Apr 19 18:33:49 2020 sparse part has weight 1474515316 (85.64/col) Sun Apr 19 18:33:49 2020 using block size 8192 and superblock size 884736 for processor cache size 9216 kB Sun Apr 19 18:34:30 2020 commencing Lanczos iteration (6 threads) Sun Apr 19 18:34:30 2020 memory use: 6059.7 MB Sun Apr 19 18:35:10 2020 linear algebra at 0.0%, ETA 123h21m This will need a fair amount more sieving to get a good matrix I imagine; 17M is a fair bit larger than any of the matrices I got on my 31/32LP job.
 2020-04-20, 01:30 #53 charybdis     Apr 2020 5×101 Posts Better, but still not ideal: Code: Mon Apr 20 00:18:31 2020 commencing relation filtering Mon Apr 20 00:18:31 2020 setting target matrix density to 100.0 Mon Apr 20 00:18:31 2020 estimated available RAM is 15845.4 MB Mon Apr 20 00:18:31 2020 commencing duplicate removal, pass 1 (errors) Mon Apr 20 00:54:28 2020 found 108030440 hash collisions in 347132929 relations Mon Apr 20 00:54:50 2020 commencing duplicate removal, pass 2 Mon Apr 20 01:01:34 2020 found 147518191 duplicates and 199614738 unique relations Mon Apr 20 01:01:34 2020 memory use: 2387.0 MB Mon Apr 20 01:01:35 2020 reading ideals above 179896320 Mon Apr 20 01:01:35 2020 commencing singleton removal, initial pass Mon Apr 20 01:17:30 2020 memory use: 5512.0 MB Mon Apr 20 01:17:31 2020 reading all ideals from disk Mon Apr 20 01:17:50 2020 memory use: 3246.7 MB Mon Apr 20 01:17:54 2020 commencing in-memory singleton removal Mon Apr 20 01:17:58 2020 begin with 199614738 relations and 194861693 unique ideals Mon Apr 20 01:18:37 2020 reduce to 76740221 relations and 52750298 ideals in 17 passes Mon Apr 20 01:18:37 2020 max relations containing the same ideal: 18 Mon Apr 20 01:18:42 2020 reading ideals above 720000 Mon Apr 20 01:18:42 2020 commencing singleton removal, initial pass Mon Apr 20 01:29:35 2020 memory use: 1506.0 MB Mon Apr 20 01:29:36 2020 reading all ideals from disk Mon Apr 20 01:29:54 2020 memory use: 3078.2 MB Mon Apr 20 01:30:00 2020 keeping 72339295 ideals with weight <= 200, target excess is 412697 Mon Apr 20 01:30:06 2020 commencing in-memory singleton removal Mon Apr 20 01:30:11 2020 begin with 76740226 relations and 72339295 unique ideals Mon Apr 20 01:31:17 2020 reduce to 76235207 relations and 71833769 ideals in 14 passes Mon Apr 20 01:31:17 2020 max relations containing the same ideal: 200 Mon Apr 20 01:31:45 2020 removing 3982395 relations and 3582395 ideals in 400000 cliques Mon Apr 20 01:31:46 2020 commencing in-memory singleton removal Mon Apr 20 01:31:51 2020 begin with 72252812 relations and 71833769 unique ideals Mon Apr 20 01:32:27 2020 reduce to 72108808 relations and 68106326 ideals in 8 passes Mon Apr 20 01:32:27 2020 max relations containing the same ideal: 198 Mon Apr 20 01:32:53 2020 removing 2968133 relations and 2568133 ideals in 400000 cliques Mon Apr 20 01:32:54 2020 commencing in-memory singleton removal Mon Apr 20 01:32:59 2020 begin with 69140675 relations and 68106326 unique ideals Mon Apr 20 01:33:33 2020 reduce to 69052705 relations and 65449713 ideals in 8 passes Mon Apr 20 01:33:33 2020 max relations containing the same ideal: 196 Mon Apr 20 01:33:58 2020 removing 2645270 relations and 2245270 ideals in 400000 cliques Mon Apr 20 01:33:59 2020 commencing in-memory singleton removal Mon Apr 20 01:34:03 2020 begin with 66407435 relations and 65449713 unique ideals Mon Apr 20 01:34:36 2020 reduce to 66332671 relations and 63129258 ideals in 8 passes Mon Apr 20 01:34:36 2020 max relations containing the same ideal: 190 Mon Apr 20 01:35:00 2020 removing 2465553 relations and 2065553 ideals in 400000 cliques Mon Apr 20 01:35:01 2020 commencing in-memory singleton removal Mon Apr 20 01:35:05 2020 begin with 63867118 relations and 63129258 unique ideals Mon Apr 20 01:35:36 2020 reduce to 63798876 relations and 60995098 ideals in 8 passes Mon Apr 20 01:35:36 2020 max relations containing the same ideal: 187 Mon Apr 20 01:36:00 2020 removing 2343003 relations and 1943003 ideals in 400000 cliques Mon Apr 20 01:36:01 2020 commencing in-memory singleton removal Mon Apr 20 01:36:05 2020 begin with 61455873 relations and 60995098 unique ideals Mon Apr 20 01:36:31 2020 reduce to 61391450 relations and 58987295 ideals in 7 passes Mon Apr 20 01:36:31 2020 max relations containing the same ideal: 182 Mon Apr 20 01:36:54 2020 removing 2255365 relations and 1855365 ideals in 400000 cliques Mon Apr 20 01:36:54 2020 commencing in-memory singleton removal Mon Apr 20 01:36:58 2020 begin with 59136085 relations and 58987295 unique ideals Mon Apr 20 01:37:24 2020 reduce to 59074085 relations and 57069592 ideals in 7 passes Mon Apr 20 01:37:24 2020 max relations containing the same ideal: 178 Mon Apr 20 01:37:45 2020 removing 2189740 relations and 1789740 ideals in 400000 cliques Mon Apr 20 01:37:46 2020 commencing in-memory singleton removal Mon Apr 20 01:37:50 2020 begin with 56884345 relations and 57069592 unique ideals Mon Apr 20 01:38:14 2020 reduce to 56823284 relations and 55218433 ideals in 7 passes Mon Apr 20 01:38:14 2020 max relations containing the same ideal: 172 Mon Apr 20 01:38:35 2020 removing 2141324 relations and 1741324 ideals in 400000 cliques Mon Apr 20 01:38:36 2020 commencing in-memory singleton removal Mon Apr 20 01:38:39 2020 begin with 54681960 relations and 55218433 unique ideals Mon Apr 20 01:39:09 2020 reduce to 54621273 relations and 53416061 ideals in 9 passes Mon Apr 20 01:39:09 2020 max relations containing the same ideal: 168 Mon Apr 20 01:39:29 2020 removing 2101359 relations and 1701359 ideals in 400000 cliques Mon Apr 20 01:39:30 2020 commencing in-memory singleton removal Mon Apr 20 01:39:33 2020 begin with 52519914 relations and 53416061 unique ideals Mon Apr 20 01:39:56 2020 reduce to 52458873 relations and 51653274 ideals in 7 passes Mon Apr 20 01:39:56 2020 max relations containing the same ideal: 166 Mon Apr 20 01:40:15 2020 removing 1744320 relations and 1417450 ideals in 326870 cliques Mon Apr 20 01:40:16 2020 commencing in-memory singleton removal Mon Apr 20 01:40:19 2020 begin with 50714553 relations and 51653274 unique ideals Mon Apr 20 01:40:40 2020 reduce to 50670954 relations and 50191970 ideals in 7 passes Mon Apr 20 01:40:40 2020 max relations containing the same ideal: 164 Mon Apr 20 01:41:06 2020 relations with 0 large ideals: 1404 Mon Apr 20 01:41:06 2020 relations with 1 large ideals: 2464 Mon Apr 20 01:41:06 2020 relations with 2 large ideals: 35035 Mon Apr 20 01:41:06 2020 relations with 3 large ideals: 313598 Mon Apr 20 01:41:06 2020 relations with 4 large ideals: 1606387 Mon Apr 20 01:41:06 2020 relations with 5 large ideals: 5084360 Mon Apr 20 01:41:06 2020 relations with 6 large ideals: 10406242 Mon Apr 20 01:41:06 2020 relations with 7+ large ideals: 33221464 Mon Apr 20 01:41:06 2020 commencing 2-way merge Mon Apr 20 01:41:32 2020 reduce to 30988355 relation sets and 30509371 unique ideals Mon Apr 20 01:41:32 2020 commencing full merge Mon Apr 20 01:48:59 2020 memory use: 3777.1 MB Mon Apr 20 01:49:02 2020 found 14975257 cycles, need 14925571 Mon Apr 20 01:49:05 2020 weight of 14925571 cycles is about 1492665462 (100.01/cycle) Mon Apr 20 01:49:05 2020 distribution of cycle lengths: Mon Apr 20 01:49:05 2020 1 relations: 1267534 Mon Apr 20 01:49:05 2020 2 relations: 1375762 Mon Apr 20 01:49:05 2020 3 relations: 1443044 Mon Apr 20 01:49:05 2020 4 relations: 1366428 Mon Apr 20 01:49:05 2020 5 relations: 1300232 Mon Apr 20 01:49:05 2020 6 relations: 1181723 Mon Apr 20 01:49:05 2020 7 relations: 1079223 Mon Apr 20 01:49:05 2020 8 relations: 957610 Mon Apr 20 01:49:05 2020 9 relations: 853021 Mon Apr 20 01:49:05 2020 10+ relations: 4100994 Mon Apr 20 01:49:05 2020 heaviest cycle: 27 relations Mon Apr 20 01:49:08 2020 commencing cycle optimization Mon Apr 20 01:49:26 2020 start with 105680214 relations Mon Apr 20 01:51:40 2020 pruned 3293755 relations Mon Apr 20 01:51:41 2020 memory use: 3182.7 MB Mon Apr 20 01:51:41 2020 distribution of cycle lengths: Mon Apr 20 01:51:41 2020 1 relations: 1267534 Mon Apr 20 01:51:41 2020 2 relations: 1409368 Mon Apr 20 01:51:41 2020 3 relations: 1498136 Mon Apr 20 01:51:41 2020 4 relations: 1408492 Mon Apr 20 01:51:41 2020 5 relations: 1342845 Mon Apr 20 01:51:41 2020 6 relations: 1211287 Mon Apr 20 01:51:41 2020 7 relations: 1104355 Mon Apr 20 01:51:41 2020 8 relations: 973387 Mon Apr 20 01:51:41 2020 9 relations: 861883 Mon Apr 20 01:51:41 2020 10+ relations: 3848284 Mon Apr 20 01:51:41 2020 heaviest cycle: 27 relations Mon Apr 20 01:52:04 2020 RelProcTime: 5613 Mon Apr 20 01:52:09 2020 Mon Apr 20 01:52:09 2020 commencing linear algebra Mon Apr 20 01:52:10 2020 read 14925571 cycles Mon Apr 20 01:52:34 2020 cycles contain 50343966 unique relations Mon Apr 20 01:59:36 2020 read 50343966 relations Mon Apr 20 02:00:40 2020 using 20 quadratic characters above 4294917295 Mon Apr 20 02:03:53 2020 building initial matrix Mon Apr 20 02:11:39 2020 memory use: 7107.1 MB Mon Apr 20 02:11:48 2020 read 14925571 cycles Mon Apr 20 02:11:50 2020 matrix is 14925394 x 14925571 (6098.2 MB) with weight 1895598568 (127.00/col) Mon Apr 20 02:11:50 2020 sparse part has weight 1419511207 (95.11/col) Mon Apr 20 02:14:13 2020 filtering completed in 2 passes Mon Apr 20 02:14:15 2020 matrix is 14924343 x 14924519 (6098.2 MB) with weight 1895554864 (127.01/col) Mon Apr 20 02:14:15 2020 sparse part has weight 1419502766 (95.11/col) Mon Apr 20 02:15:30 2020 matrix starts at (0, 0) Mon Apr 20 02:15:32 2020 matrix is 14924343 x 14924519 (6098.2 MB) with weight 1895554864 (127.01/col) Mon Apr 20 02:15:32 2020 sparse part has weight 1419502766 (95.11/col) Mon Apr 20 02:15:32 2020 saving the first 48 matrix rows for later Mon Apr 20 02:15:33 2020 matrix includes 64 packed rows Mon Apr 20 02:15:35 2020 matrix is 14924295 x 14924519 (5935.9 MB) with weight 1585538856 (106.24/col) Mon Apr 20 02:15:35 2020 sparse part has weight 1406827930 (94.26/col) Mon Apr 20 02:15:35 2020 using block size 8192 and superblock size 884736 for processor cache size 9216 kB Mon Apr 20 02:16:13 2020 commencing Lanczos iteration (6 threads) Mon Apr 20 02:16:13 2020 memory use: 5668.7 MB Mon Apr 20 02:16:47 2020 linear algebra at 0.0%, ETA 89h59m My impression is that 31/32 and 32/32 are pretty similar in terms of the sieving time needed to build a matrix, but 32/32 results in larger matrices and so 31/32 should be preferred. Edit: Curtis - I'll start my next job after I've sieved the current c177 a bit more overnight. The natural target would be one of the Homogeneous Cunningham c178s (Ed took the last c177), which I'd like to do with I=15 so that we can get some sort of comparison between A=28 and I=15 on the same hardware. Are there any changes I should make to the parameter file you just gave Ed - maybe slightly higher lims? Last fiddled with by charybdis on 2020-04-20 at 01:46
2020-04-20, 02:56   #55
EdH

"Ed Hall"
Dec 2009

77028 Posts

Quote:
 Originally Posted by charybdis . . . Edit: Curtis - I'll start my next job after I've sieved the current c177 a bit more overnight. The natural target would be one of the Homogeneous Cunningham c178s (Ed took the last c177), which I'd like to do with I=15 so that we can get some sort of comparison between A=28 and I=15 on the same hardware. Are there any changes I should make to the parameter file you just gave Ed - maybe slightly higher lims?
If you would like the 177 for experimentation and better comparison, it would be OK with me to let you have it. I can grab a 178 next. I can easily unreserve it on the HCN page. You can go ahead and start it and let me know later so I can stop my farming and unreserve it.

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