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 Showing results 1 to 25 of 1000 Search took 0.34 seconds. Search: Posts Made By: bsquared
 Forum: Math 2022-06-21, 20:57 Replies: 25 Views: 965 Posted By bsquared I am not recommending yafu for this problem,... I am not recommending yafu for this problem, quite the opposite in fact, but it does have the operator "eq" for comparison: >> eq(137998080^3+940896^4,1359072^4) ans = 1 >>...
 Forum: MattcAnderson 2022-06-15, 12:36 Replies: 2 Views: 132 Posted By bsquared Pretty funny, but I wonder what version of yafu... Pretty funny, but I wonder what version of yafu you are using? Because since at least the year 2013 yafu tells me: .\yafu-x64.exe "siqs(100)" input must be odd ***factors found***
 Forum: YAFU 2022-05-16, 19:23 Replies: 346 Views: 45,802 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: 346 Views: 45,802 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: 346 Views: 45,802 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: 346 Views: 45,802 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: 346 Views: 45,802 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: 849 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: 346 Views: 45,802 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: 849 Posted By bsquared Seems reasonable. Seems reasonable.
 Forum: YAFU 2022-03-23, 20:06 Replies: 16 Views: 849 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: 849 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: 849 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() -siqsT
 Forum: YAFU 2022-03-22, 13:31 Replies: 16 Views: 849 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: 346 Views: 45,802 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: 346 Views: 45,802 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: 346 Views: 45,802 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: 641 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: 757 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: 15,909 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: 15,909 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: 15,909 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: 15,909 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: 15,909 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 Sticky: Msieve benchmarking Views: 28,271 Posted By bsquared :shock:. :shock:.
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