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Forum: YAFU 2022-05-16, 19:23
Replies: 337
Views: 41,833
Posted By bsquared
There is a fix for this in the latest source. ...

There is a fix for this in the latest source. Looks like I will need to make another windows executable.
Forum: YAFU 2022-05-05, 14:53
Replies: 337
Views: 41,833
Posted By bsquared
I'm liking this quite a bit, hopefully it can be...

I'm liking this quite a bit, hopefully it can be useful!


{
"input-expression":"factor(2^523-1)",
...
Forum: YAFU 2022-05-04, 18:31
Replies: 337
Views: 41,833
Posted By bsquared
Thanks for the fix! I'm reading the syntax page...

Thanks for the fix! I'm reading the syntax page but I will likely rely heavily on users to tell me when things are broken. The composite example was actually a bug... it's now fixed.


cat...
Forum: YAFU 2022-05-04, 17:11
Replies: 337
Views: 41,833
Posted By bsquared
A lot of this info is fairly easily available at...

A lot of this info is fairly easily available at the end of a factorization:


cat factor.json
{
"input-expression":"factor(2^351-1)",
...
Forum: YAFU 2022-03-25, 17:19
Replies: 337
Views: 41,833
Posted By bsquared
Actually, I'm wrong, you have to have one -v for...

Actually, I'm wrong, you have to have one -v for it to *say* that it parsed the .ini file. It will parse it correctly regardless of what it says, it's just a reporting problem.
Forum: YAFU 2022-03-25, 17:08
Replies: 16
Views: 721
Posted By bsquared
It would probably be non-trivial, and I don't...

It would probably be non-trivial, and I don't have any plans to fully automate it anytime soon. It could be close but it's unlikely to be faster than NFS at C105.

SIQS is also pretty memory...
Forum: YAFU 2022-03-25, 16:57
Replies: 337
Views: 41,833
Posted By bsquared
I found the problem. For some dumb reason I...

I found the problem. For some dumb reason I surrounded the getcwd() command with a check for verbosity>0. So you have to have at least one -v for it to parse the .ini. :doh!:

Hopefully that...
Forum: YAFU 2022-03-23, 20:59
Replies: 16
Views: 721
Posted By bsquared
Seems reasonable.

Seems reasonable.
Forum: YAFU 2022-03-23, 20:06
Replies: 16
Views: 721
Posted By bsquared
First off, good work! A reduction in time is...

First off, good work! A reduction in time is great for your mix of cpus.

To hopefully shed some light on relation counts: what we really need are N cycles (120304 of them, in your case). These...
Forum: YAFU 2022-03-23, 12:55
Replies: 16
Views: 721
Posted By bsquared
If you are talking normal SIQS and not 3LP, then...

If you are talking normal SIQS and not 3LP, then there is no table or calculation. Raw relations are added directly to a tree structure that maintains an exact count of cycles on the fly. So we...
Forum: YAFU 2022-03-22, 14:16
Replies: 16
Views: 721
Posted By bsquared
I think yes, to all. Each instance is started...

I think yes, to all. Each instance is started with random polynomials so siqs(<composite>) -siqsT <time> is sufficient. cat all relation files together. restart one process on the combined file...
Forum: YAFU 2022-03-22, 13:31
Replies: 16
Views: 721
Posted By bsquared
It is not a built-in capability, but it is...

It is not a built-in capability, but it is possible to do. (I have done it, e.g., on this (https://www.mersenneforum.org/showpost.php?p=161872&postcount=681)C130.) "Just" start N instances of yafu...
Forum: YAFU 2022-03-16, 20:16
Replies: 337
Views: 41,833
Posted By bsquared
Great news, thanks! I vaguely recall having...

Great news, thanks!

I vaguely recall having issues like this with -O3 in the past, which is why it defaults to -O2, but I would not have thought of that as a culprit. Glad you found it.
Forum: YAFU 2022-03-16, 15:05
Replies: 337
Views: 41,833
Posted By bsquared
With gcc-11.1.0 on a Xeon 6254 for the sieving...

With gcc-11.1.0 on a Xeon 6254 for the sieving portion of siqs with 16 threads I get:
54 seconds with SSE2 (this is default)
49 seconds with SSE4.1
40 seconds with AVX/BMI2
29 seconds with...
Forum: YAFU 2022-03-15, 02:24
Replies: 337
Views: 41,833
Posted By bsquared
I committed a fix for the ULL issue, a silly...

I committed a fix for the ULL issue, a silly copy/paste thing that I'm surprised gcc/icc doesn't flag. As for it being slower, are you building with the right options for your cpu? If you have...
Forum: Lounge 2022-03-10, 15:35
Replies: 9
Views: 613
Posted By bsquared
I also play volleyball. I've played on A-level...

I also play volleyball. I've played on A-level men's and coed teams for the last 20 years or more... although it's getting more and more difficult to keep up to these young kids :paul:

Golf is...
Forum: YAFU 2022-03-02, 14:23
Replies: 2
Views: 673
Posted By bsquared
It's not a bug... ECM is a probabilistic...

It's not a bug... ECM is a probabilistic algorithm, meaning there is only a chance that a random curve will find a factor. The more you run it the better chance you have. So you just didn't get...
Forum: Factoring 2022-02-17, 16:25
Replies: 67
Views: 15,413
Posted By bsquared
You only need the sievers. No one has used any...

You only need the sievers. No one has used any of the rest of it in a decade or more, to my knowledge.

To build those I think this works:
Forum: Factoring 2022-02-17, 15:24
Replies: 67
Views: 15,413
Posted By bsquared
I just now re-uploaded linux ggnfs executables...

I just now re-uploaded linux ggnfs executables here (https://sites.google.com/site/bbuhrow/home/factorization-code-links). It's a zip file dated 2011, which is probably when I last built the things...
Forum: Factoring 2022-02-15, 04:11
Replies: 67
Views: 15,413
Posted By bsquared
Added some 4-thread data (on a 6-core, 12-thread...

Added some 4-thread data (on a 6-core, 12-thread machine). With 4 threads the crossover is slightly over 100 digits again.
Forum: Factoring 2022-02-13, 22:28
Replies: 67
Views: 15,413
Posted By bsquared
Yeah that makes sense too. Maybe I can also run...

Yeah that makes sense too. Maybe I can also run a few points with multiple threads.

The C100 was about 30% faster with the new params, very nice! That brings the crossover somewhere between 95...
Forum: Factoring 2022-02-13, 19:11
Replies: 67
Views: 15,413
Posted By bsquared
Saw ~10% improvement on the c95. I didn't really...

Saw ~10% improvement on the c95. I didn't really watch the first one with default params, but this one had to extend the sieve range 5 or 6 times before filtering/LA.
Forum: Msieve 2022-02-12, 15:52
Replies: 50
Views: 27,851
Posted By bsquared
:shock:.

:shock:.
Forum: Factoring 2022-02-12, 15:40
Replies: 67
Views: 15,413
Posted By bsquared
I'm using the default for now. I'll go back and...

I'm using the default for now. I'll go back and re-time with the improved params as well.
Forum: Factoring 2022-02-12, 02:58
Replies: 67
Views: 15,413
Posted By bsquared
QS packages tested: * yafu (2.08) NFS...

QS packages tested:
* yafu (2.08)

NFS packages tested:
* yafu-nfs-2.08 (msieve/ggnfs64)
* cado-nfs-3.0.0

Run on: Intel(R) Core(TM) i7-7800X CPU @ 3.50GHz (wsl2); all tests single threaded. ...
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