Forum: Aliquot Sequences
2022-08-08, 08:22
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Replies: 155
Views: 53,381
If this situation requires more sieving, I'd...
If this situation requires more sieving, I'd assume we have more distinct prime factors (or ideals actually?) than relations? But then why is it called overdetermined? That to me sounds like having...
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Forum: NFS@Home
2022-08-08, 06:13
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Replies: 105
Views: 9,090
Ok, I was also wondering who could continue on...
Ok, I was also wondering who could continue on that sequence. Doing the post processing is just a small contribution after all and I didn't want to "steal" the sequence from anyone. But then I'll...
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Forum: NFS@Home
2022-08-08, 05:58
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Replies: 93
Views: 5,563
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Forum: NFS@Home
2022-08-07, 07:21
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Replies: 93
Views: 5,563
That seems so low to me. A GNFS 160 takes about...
That seems so low to me. A GNFS 160 takes about 160M raw relations, a GFNS 165 takes about 220 M when I do it with CADO using Curtis' optimized parameters. Is this a result of using very different...
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Forum: NFS@Home
2022-08-04, 10:35
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Replies: 3
Views: 113
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Forum: NFS@Home
2022-08-04, 08:55
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Replies: 105
Views: 9,090
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Forum: NFS@Home
2022-08-04, 07:48
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Replies: 101
Views: 6,302
Default TD is 90.
True, target density does...
Default TD is 90.
True, target density does have an effect, albeit not very much for smaller numbers. In case of this 19M matrix the difference between 90 and 120 was around 4% lower ETA which is...
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Forum: NFS@Home
2022-08-04, 07:42
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Replies: 101
Views: 6,302
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Forum: NFS@Home
2022-08-03, 13:00
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Replies: 3
Views: 113
Colab for linear algebra?
GPU72 has a very easy to use script to trial factor using Colab's free Tesla T4's (16 GB RAM). I was wondering if this couldn't be used for linear algebra. I usually get about 3 hours at least once...
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Forum: Proth Prime Search
2022-08-02, 06:25
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Replies: 16
Views: 2,871
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Forum: mersenne.ca
2022-07-28, 09:53
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Replies: 48
Views: 2,030
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Forum: Factoring
2022-07-28, 06:58
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Replies: 64
Views: 8,443
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Forum: NFS@Home
2022-07-28, 06:55
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Replies: 101
Views: 6,302
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Forum: Msieve
2022-07-27, 05:56
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Replies: 10
Views: 228
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Forum: Factoring
2022-07-26, 19:43
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Replies: 64
Views: 8,443
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Forum: CADO-NFS
2022-07-26, 16:59
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Replies: 2
Views: 341
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Forum: Msieve
2022-07-26, 15:00
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Replies: 10
Views: 228
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Forum: Msieve
2022-07-26, 14:09
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Replies: 10
Views: 228
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Forum: CADO-NFS
2022-07-26, 13:54
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Replies: 2
Views: 341
Linear algebra using all available cores
I recently installed a fresh copy of CADO and it uses all available cores (including logical cores) for the LA step. Since it's a smaller number I simply ran ./cado-nfs.py $a -t 10.
I tried -t 10,...
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Forum: Msieve
2022-07-26, 09:55
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Replies: 10
Views: 228
MPI and msieve
I wanted to give MPI a try for msieve.
First off, is it even worth the effort for a single-socket 12-core system?
If so, I saw that usually people run with a command line similar to mpirun -np...
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Forum: NFS@Home
2022-07-21, 12:21
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Replies: 101
Views: 6,302
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Forum: NFS@Home
2022-07-19, 06:52
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Replies: 463
Views: 58,908
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Forum: NFS@Home
2022-07-19, 06:44
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Replies: 21
Views: 720
It's finally done, LA took 800 hours.
I...
It's finally done, LA took 800 hours.
I noticed the machine is generally not very effective if you use a lot of threads for one task. As an example:
Single threaded LLR took 4.5 ms per...
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Forum: NFS@Home
2022-07-19, 05:59
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Replies: 101
Views: 6,302
5p2_950M is finally done...
NpvnLzEk
...
5p2_950M is finally done...
NpvnLzEk
Mon Jul 18 21:28:49 2022 p72 factor: 827973016668650713388064731991152830057402447576623382393481045697281201
Mon Jul 18 21:28:49 2022 p120 factor:...
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Forum: CADO-NFS
2022-07-07, 06:01
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Replies: 95
Views: 19,601
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