mersenneforum.org  

Go Back   mersenneforum.org > Factoring Projects > Msieve

Reply
 
Thread Tools
Old 2010-01-11, 07:53   #1
Andi47
 
Andi47's Avatar
 
Oct 2004
Austria

248210 Posts
Default Feature request @ "too few cycles" after filtering

I just found this From an aliquot-sequence run using aliquit (which used factMsieve.pl):

Code:
[Dec 27 2009, 03:10:43] c123: running gnfs (ggnfs)...

<after sieving, doing a filtering run:>
...
Mon Dec 28 18:47:09 2009  commencing 2-way merge
Mon Dec 28 18:47:15 2009  reduce to 1894462 relation sets and 1860144 unique ideals
Mon Dec 28 18:47:15 2009  ignored 672 oversize relation sets
Mon Dec 28 18:47:15 2009  commencing full merge
Mon Dec 28 18:49:13 2009  memory use: 59.5 MB
Mon Dec 28 18:49:13 2009  found 45455 cycles, need 389341
Mon Dec 28 18:49:13 2009  too few cycles, matrix probably cannot build

[Dec 28 2009, 18:49:14] c123: running 0 auto-increasing ecm curves...

<and after MUCH ECM during christmas holidays, I found this (GMP-ECM started by aliqueit.exe):>

[Mon, Jan. 11, 2010] Run 5415 out of 0:
Using B1=34208163, B2=34208163-144293429296, polynomial Dickson(12), sigma=4281422573
Step 1 took 443469ms
Step 2 took 92906ms
Run 5416 out of 0:
Using B1=34217470, B2=34217470-144293429296, polynomial Dickson(12), sigma=1054942624
^C
So please make msieve give the same "return code" (which is then caught by factMsieve.pl) for both, "filtering wants 1000000 more relations" and the above "error". This would prevent aliqueit.exe from get stuck in the "running ECM forever"-condition (especially useful if aliqueit is run unattended).

Last fiddled with by Andi47 on 2010-01-11 at 07:55 Reason: formatting
Andi47 is offline   Reply With Quote
Old 2010-01-11, 08:04   #2
Batalov
 
Batalov's Avatar
 
"Serge"
Mar 2008
Phi(4,2^7658614+1)/2

100100101011102 Posts
Default

This has been fixed way back in November
Batalov is offline   Reply With Quote
Old 2010-01-11, 08:50   #3
Andi47
 
Andi47's Avatar
 
Oct 2004
Austria

46628 Posts
Default

Quote:
Originally Posted by Batalov View Post
This has been fixed way back in November
In the SVN (Which I didn't know until now, too), but not in the official version. (1.43, which is the latest official version, crashes in this way.)
Andi47 is offline   Reply With Quote
Reply

Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
Misfit "unsupported feature" LaurV MISFIT 11 2019-12-16 05:03
"Spare" work feature request Xyzzy Software 0 2009-08-23 06:25
"Feature" request: Keep new B2 value when memory allotment increased JuanTutors Software 3 2006-12-18 06:31
Prime95 Version 24.13 "Feature" RMAC9.5 Software 2 2006-03-24 21:12
request: always include "from" in trial-factoring results James Heinrich Software 1 2005-04-10 02:44

All times are UTC. The time now is 08:59.

Mon Apr 19 08:59:02 UTC 2021 up 11 days, 3:39, 0 users, load averages: 1.97, 1.57, 1.43

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2021, Jelsoft Enterprises Ltd.

This forum has received and complied with 0 (zero) government requests for information.

Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation.
A copy of the license is included in the FAQ.