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

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

I just found this From an aliquot-sequence run using aliquit (which used

[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
So please make msieve give the same "return code" (which is then caught by 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
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Old 2010-01-11, 08:04   #2
Batalov's Avatar
Mar 2008

100100101011102 Posts

This has been fixed way back in November
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Old 2010-01-11, 08:50   #3
Andi47's Avatar
Oct 2004

46628 Posts

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.)
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