20210603, 13:26  #496  
"Ben"
Feb 2007
2^{2}×3×293 Posts 
Quote:
Quote:


20210603, 17:53  #497 
Aug 2020
2^{2}·3·5^{2} Posts 

20210616, 06:21  #498 
I moo ablest echo power!
May 2013
3365_{8} Posts 
Running into an issue while trying to do some testsieving (and gnfs/snfs in general) with YAFU.
Specifically, the tune() function runs just fine all the way through both the SIQS and NFS testing. I run something like Code:
./yafu "nfs(rsa(500))" v Code:
polynomial degree: 5 max stage 1 norm: 8.05e+22 max stage 2 norm: 6.57e+19 min Evalue: 4.11e12 poly select deadline: 554355 time limit set to 153.99 CPUhours expecting poly E from 7.00e12 to > 8.05e12 searching leading coefficients from 8192 to 8442 deadline: 8640000 CPUseconds per coefficient coeff 8280 specialq 1  7293164 other 28289  67893 Segmentation fault Last fiddled with by wombatman on 20210616 at 06:21 
20210616, 14:24  #499  
"Ben"
Feb 2007
2^{2}·3·293 Posts 
Quote:


20210616, 15:30  #500 
I moo ablest echo power!
May 2013
13×137 Posts 

20210616, 16:16  #501 
"Ben"
Feb 2007
110110111100_{2} Posts 

20210616, 16:55  #502 
I moo ablest echo power!
May 2013
13·137 Posts 

20210618, 17:33  #503 
I moo ablest echo power!
May 2013
13·137 Posts 
As a quick followup, I checked the WSL2built msieve to make sure it was functioning properly. I used a 100digit number for the sake of brevity, but msieve started both the polynomial search and sieve stages with no issue. I didn't bother with the linear algebra part, since that's not where I'm hitting the segmentation fault.

20210619, 04:19  #504 
"Ben"
Feb 2007
2^{2}×3×293 Posts 
I updated my wsl2 copy of msieve to 1041, rebuilt everything, and I'm still not seeing the crash. I have been making a few changes to yafu 2.0 lately, so if you haven't yet, update to get those. If it still crashes, please run the job in gdb and backtrace when it segfaults to help pinpoint where it's happening.

20210619, 05:07  #505  
I moo ablest echo power!
May 2013
13×137 Posts 
Quote:


20210623, 13:21  #506 
May 2009
Russia, Moscow
2,593 Posts 
How to set minimum number of relations when filtering should started in YAFU? Seems like min_rels estimation somehow broken for small numbers.
Code:
06/23/21 05:06:01 v1.34.5 @ workstation, **************************** 06/23/21 05:06:01 v1.34.5 @ workstation, Starting factorization of 4769680008811953517130252531389050839921028010533834008817232296514476227210306415512533832918083 06/23/21 05:06:01 v1.34.5 @ workstation, using pretesting plan: normal 06/23/21 05:06:01 v1.34.5 @ workstation, no tune info: using qs/gnfs crossover of 95 digits 06/23/21 05:06:01 v1.34.5 @ workstation, input indicated to have been pretested to t25.00 06/23/21 05:06:01 v1.34.5 @ workstation, **************************** 06/23/21 05:06:01 v1.34.5 @ workstation, rho: x^2 + 3, starting 1000 iterations on C97 06/23/21 05:06:01 v1.34.5 @ workstation, rho: x^2 + 2, starting 1000 iterations on C97 06/23/21 05:06:01 v1.34.5 @ workstation, rho: x^2 + 1, starting 1000 iterations on C97 06/23/21 05:06:01 v1.34.5 @ workstation, pm1: starting B1 = 3750K, B2 = gmpecm default on C97 06/23/21 05:06:06 v1.34.5 @ workstation, current ECM pretesting depth: 25.33 06/23/21 05:06:06 v1.34.5 @ workstation, scheduled 390 curves at B1=250000 toward target pretesting depth of 29.85 06/23/21 05:16:16 v1.34.5 @ workstation, Finished 390 curves using Lenstra ECM method on C97 input, B1=250K, B2=gmpecm default 06/23/21 05:16:16 v1.34.5 @ workstation, final ECM pretested depth: 29.86 06/23/21 05:16:16 v1.34.5 @ workstation, scheduler: switching to sieve method 06/23/21 05:16:16 v1.34.5 @ workstation, nfs: commencing nfs on c97: 4769680008811953517130252531389050839921028010533834008817232296514476227210306415512533832918083 06/23/21 05:16:16 v1.34.5 @ workstation, nfs: commencing poly selection with 1 threads 06/23/21 05:16:16 v1.34.5 @ workstation, nfs: setting deadline of 964 seconds 06/23/21 05:32:20 v1.34.5 @ workstation, nfs: completed 12 ranges of size 250 in 963.7039 seconds 06/23/21 05:32:20 v1.34.5 @ workstation, nfs: best poly = # norm 3.118081e13 alpha 5.832394 e 1.825e08 rroots 2 06/23/21 05:32:20 v1.34.5 @ workstation, nfs: commencing lattice sieving with 1 threads 06/23/21 05:41:37 v1.34.5 @ workstation, nfs: commencing lattice sieving with 1 threads 06/23/21 05:51:18 v1.34.5 @ workstation, nfs: commencing lattice sieving with 1 threads 06/23/21 06:00:53 v1.34.5 @ workstation, nfs: commencing lattice sieving with 1 threads 06/23/21 06:09:52 v1.34.5 @ workstation, nfs: commencing lattice sieving with 1 threads 06/23/21 06:19:38 v1.34.5 @ workstation, nfs: commencing lattice sieving with 1 threads 06/23/21 06:28:50 v1.34.5 @ workstation, nfs: commencing lattice sieving with 1 threads 06/23/21 06:38:44 v1.34.5 @ workstation, nfs: commencing lattice sieving with 1 threads 06/23/21 06:49:01 v1.34.5 @ workstation, nfs: commencing lattice sieving with 1 threads 06/23/21 06:58:44 v1.34.5 @ workstation, nfs: commencing lattice sieving with 1 threads 06/23/21 07:09:12 v1.34.5 @ workstation, nfs: commencing lattice sieving with 1 threads 06/23/21 07:20:04 v1.34.5 @ workstation, nfs: commencing msieve filtering 06/23/21 07:21:16 v1.34.5 @ workstation, nfs: raising min_rels by 5.00 percent to 2216153 06/23/21 07:21:16 v1.34.5 @ workstation, nfs: commencing lattice sieving with 1 threads 06/23/21 07:32:04 v1.34.5 @ workstation, nfs: commencing msieve filtering 06/23/21 07:33:26 v1.34.5 @ workstation, nfs: raising min_rels by 5.00 percent to 2420636 06/23/21 07:33:26 v1.34.5 @ workstation, nfs: commencing lattice sieving with 1 threads 06/23/21 07:43:52 v1.34.5 @ workstation, nfs: commencing msieve filtering 06/23/21 07:45:15 v1.34.5 @ workstation, nfs: raising min_rels by 5.00 percent to 2629918 06/23/21 07:45:15 v1.34.5 @ workstation, nfs: commencing lattice sieving with 1 threads 06/23/21 07:55:55 v1.34.5 @ workstation, nfs: commencing msieve filtering 06/23/21 07:57:31 v1.34.5 @ workstation, nfs: raising min_rels by 5.00 percent to 2845238 06/23/21 07:57:31 v1.34.5 @ workstation, nfs: commencing lattice sieving with 1 threads 06/23/21 08:08:03 v1.34.5 @ workstation, nfs: commencing msieve filtering 06/23/21 08:10:10 v1.34.5 @ workstation, nfs: commencing msieve linear algebra 06/23/21 08:20:27 v1.34.5 @ workstation, nfs: commencing msieve sqrt 06/23/21 08:21:21 v1.34.5 @ workstation, prp46 = 7412512799061243486864906593531917503138920627 06/23/21 08:21:21 v1.34.5 @ workstation, prp51 = 643463308342079205421383456862481650555873117703729 06/23/21 08:21:21 v1.34.5 @ workstation, NFS elapsed time = 11104.6899 seconds. 
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