20160818, 13:02  #67  
"Ben"
Feb 2007
7·13·41 Posts 
Quote:
Try checking out that code and rebuilding. Sorry about that... 

20160819, 12:32  #68 
Oct 2015
France
77_{8} Posts 
Anyway, I don't think it would bring about major change, does it?
Last fiddled with by Romuald on 20160819 at 12:34 
20160819, 12:37  #69 
Oct 2015
France
3^{2}×7 Posts 
Code:
matthias@matthiasAspireV3771G:~/Téléchargements/programs/yafucode$ ./yafu v 08/19/16 14:34:49 v1.34.5 @ matthiasAspireV3771G, System/Build Info: Using GMPECM 7.0.3, Powered by GMP 6.1.1 detected Intel(R) Core(TM) i53230M CPU @ 2.60GHz detected L1 = 32768 bytes, L2 = 3145728 bytes, CL = 64 bytes measured cpu frequency ~= 2594.042160 using 1 random witnesses for RabinMiller PRP checks I don't see any other crucial informations to put in the yafu.ini, however I'm not an expert. Currently I have 4 lines of tune_info: Code:
tune_info=Intel(R) Xeon(R) CPU X5460 @ 3.16GHz,LINUX64,2.18911e05,0.202416,0.389149,0.100747,96.2505,3158.64 tune_info=Intel(R) Xeon(R) CPU X5570 @ 2.93GHz,LINUX64,3.49486e05,0.196117,0.457315,0.0986543,97.2601,2926.14 tune_info=Intel(R) Xeon(R) CPU X5687 @ 3.60GHz,WIN64,2.17215e005,0.198989,0.289067,0.104803,100.823,3559.71 tune_info=Intel(R) Xeon(R) CPU X5680 @ 3.33GHz,LINUX64,2.20817e05,0.199481,0.407936,0.0991673,97.9339,3325.09 NB: This is still the install from svn checkout svn://svn.code.sf.net/p/yafu/code/trunk yafucode, I didn't get the newest from your rectification B² yet. Last fiddled with by Romuald on 20160819 at 12:43 
20160820, 03:52  #70 
Romulan Interpreter
"name field"
Jun 2011
Thailand
2822_{16} Posts 
Delete them, or put them in the comment to keep them for posterity and/or for historical purposes, or whatever (I am always a packrat!) and run the tune command again.
edit: for experts/experienced users, you have to type ./yafu tune Last fiddled with by LaurV on 20160820 at 03:58 
20160820, 12:07  #71  
Oct 2015
France
3F_{16} Posts 
Quote:
I never did it before. Anyway, I always have this damned seg fault. It starts to be annoying to me and I think that henceforth I'm going to run YAFU as a single program, 'cause I find this assembly with GGNFS and GMP/GMPECM is definitively shaky/dicey (well, that's my opinion). Last fiddled with by Romuald on 20160820 at 12:09 

20160826, 13:06  #72 
Oct 2015
France
111111_{2} Posts 
I think my computer is playing tricks to me. I just tried again today unziping all my files of source codes and binaries, and guess what, when I called yafu to factor a very large number (I tried successively with numbers more and more big until a 604bits one to be sure) and I didn't get this damned segmentation fault, the ECM data comes in uninterrupted streams on the terminal tab.
And for the first numbers, around 100 digits and more, I was first surprised to dee that YAFU was factoring them rather quickly compared to usual singlehanded YAFU factorization. I deduced it was the speed improvements due to the other programs alongside. For instance, I factorized this 455bits number in 0.3238 secs which is, from what i can remember, quite fast on my own computer. 63740574903749027942156975423697452139327549709654710975420967235906729124603749521079432541684616065415056410654168416510651684611065163 Thank you all of you for working this out. Last fiddled with by Romuald on 20160826 at 13:36 
20160826, 20:49  #73 
"Ed Hall"
Dec 2009
Adirondack Mtns
1010001101100_{2} Posts 
Sorry I haven't been around lately to answer questions about my page. But, glad to see you are making headway with your system.
A few answers, that are probably of no real value now: I have recently updated my page for 64bit installations. The formerly working GitHub version of ggnfs has apparently been modified to fail now. I no longer reference or use antiX. antiX is a linux distribution based on Debian and can be researched on the web. Although it ran fine for me, there were embedded propaganda files in the distribution. I elected to strip my page down to Ubuntu, which supports all my needs so far in math computing. 
20160827, 08:59  #74 
Oct 2015
France
3^{2}×7 Posts 
Yes, Ubuntu is also a great tool in math for me as a student. I discovered sagemath about 1 ½ year ago, that's a tool I often use, with python (and other libraries), and now factoring tools, although I can't really understand them in the deep mathematical background. I suppose I'll have to wait a little bit more before studying that.
Concerning this number above, I finally have to put it into perspective, it was not an RSA number. I mean, it was totally random and its factors are not 2 great prime numbers. I have currently a 512bits RSA number in the process of factorization, after solving the path problem. It's long. Is there any existing plot of the time of factorization through YAFU vs the bits number of an integer? 
20160827, 09:08  #75 
Basketry That Evening!
"Bunslow the Bold"
Jun 2011
40<A<43 89<O<88
3×29×83 Posts 
It's roughly subexponential. Here's a plot of NFS and QS timings (assuming ECM doesn't find small factors of course): http://www.mersenneforum.org/showthr...225#post423225

20160827, 09:46  #76 
Oct 2015
France
63_{10} Posts 
Ok, thanks, it might help me estimating the necessary time, the only linear factor being the power of calculus of the computer.

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