20220713, 23:06  #1750  
May 2007
Kansas; USA
26114_{8} Posts 
Quote:
Do your times above include ECM time? Or are they just NFS time or whatever equivalent is used in CADO? How much memory for a C135? About how much memory for a C155? I've had a Ryzen 3950X (16 cores/32 threads) for ~18 months and just recently fired it up on factoring although I believe I've done nothing bigger than a C123. In the near future, I'd like to give it a crack at a C137. I'd like to do some comparison. I'm running Windows 10 so I don't expect to be as fast plus the 5950X is certainly going to be faster than a 3950X. I'm curious to do some extrapolation. 

20220713, 23:26  #1751 
"Curtis"
Feb 2005
Riverside, CA
13×421 Posts 
I'm away on vacation for a couple more days, so I don't have precise timing data handy. The time I cited is CADONFS claimed wall clock time for a factorization, so ignores ECM. Naturally, one can choose how much ECM to do; I choose about 20% of NFS time for my ECM effort as a rough guideline. I'll have a look at 'top' in linux while a job is running to discover memory use within CADO I think part of post processing uses as much as 15GB even in the C135C140 range, but it's likely there's a lowermemory option CADO chooses if tons of memory isn't available.
I'm taking the opportunity of a new CPU to redo my CADO params files; I'm finding 1015% improvement over my old files at most sizes, basically one digit faster. I'll get the smaller ones posted in a week or two after some more testing. If there are others still using factmsieve.py for parameter selection rather than YAFU, I may try to improve parameter selection for 100130 digit jobs using what I've learned from CADO param selection; mostly that's much much larger largeprime choices than the old rules of thumb (I'm at 29 bit LP by C135, for instance, even while still on 13e). I don't know how to tell YAFU what to choose, but perhaps if I played with factmsieve the improved settings might be imported into YAFU? I mean, I think 25% faster jobs are possible on the GGNFS sievers. Last fiddled with by VBCurtis on 20220713 at 23:27 
20220714, 00:42  #1752 
Apr 2020
3^{2}·5·19 Posts 
I think it's just the square root that can hit such high memory at this range, as if you don't set tasks.sqrt.threads it will run as many dependencies as threads. As you know, filtering and linear algebra cause memory issues for much larger numbers and I don't think there's any way around this apart from using msieve instead.

20220715, 03:16  #1753 
May 2007
Kansas; USA
2^{2}×3^{4}×5×7 Posts 
I forgot to report this a few days ago...I'm finished initializing all sameparity exponents on all bases with beginning size of <= 180 digits. It led to many terminations and there are still many more interesting sequences that have come out of it. :)

20220715, 09:53  #1754  
"Garambois JeanLuc"
Oct 2011
France
977 Posts 
Quote:
The processor is loaded to 100%, but the job does not run. And I noticed that there is no such problem if I stop all other running calculations in parallel on the same computer. Does anyone know if there is a setting or option to change somewhere to avoid this problem ? Indeed, I usually process several sequences in parallel and also run several other programs on the aliquot sequences in parallel on my computer. This problem for the "Linear Algebra: lingen" part prevents me from doing this and it is extremely annoying for me. 

20220715, 10:03  #1755  
"99(4^34019)99 palind"
Nov 2016
(P^81993)SZ base 36
7^{2}·73 Posts 
Quote:
Also, you can add a new category “factorials” (just like “primorials”), including bases 2, 6, 24, 120, and 720 (you can also consider base 5040) Also, you can add a new category “Lehmer five”, including bases 276, 552, 564, 660, 966 

20220715, 10:23  #1756 
"Garambois JeanLuc"
Oct 2011
France
977 Posts 
I have a question about the Sage software.
This is the software I am using to do my data analysis on this project. Let's have a list of point coordinates, like this one for example (I imagined this list completely at random to make you understand what I am looking for): Code:
[(1,1),(1,3),(1,6),(2,4),(2,5),(2,10),(2,33),(3,2),(3,9),(3,12),(3,45),(4,2),(4,10),(4,16),(5,2),(5,25),(5,60)] Is there an instruction on the Sage software that can find me automatically that several of these points are on a known curve that has a known equation. You may have found the curve by looking at the data, because the coordinates [(1,1),(2,4),(3,9),(4,16),(5,25)] all define points that are on the parabola with equation y = x^2. I'm not just looking for an instruction that would give me the polynomial type equations, but of any kind, something very general that would give me the points belonging to lines, curves of polynomial equations, exponential and whatever else is possible and known. I have no idea how to program this myself. Warning : I am not looking for an instruction to see if all points in the given set belong to a curve of known equation, but if a "small" subset of the given points belong exactly to a curve of known equation. And if you don't know if this instruction exists for the Sage software, can you tell me if you know of another software that can do this job ? 
20220715, 10:53  #1757  
"Garambois JeanLuc"
Oct 2011
France
977 Posts 
I am in the process of doing the big update.
I'm also fixing the yoyo bookings that show up on the page but are no longer booked. By the way, the matched parity sequences of the base 60 will be released by yoyo. And the last sequences of this base, for exponents 86, 88 and 94 end with a small prime number. I think it's a coincidence and that for exponents 90, 92, 96, 98 and 100, this will not be the case. I can't wait to see the ending primes of base 60 ! This base has never been officially initialized. But it seems that some work has been done on it. Does anyone want to finish the initialization of this base 120 ? Quote:
OK, I'll do it. That said, at the moment I don't notice any special behavior from the bases that are factorials. As for the 120 and 5040 bases, I would only add them if someone initializes them. Quote:
This category may not be final, so we will not add it. 

20220715, 13:13  #1758  
"Ed Hall"
Dec 2009
Adirondack Mtns
2·3^{2}·271 Posts 
Quote:
I wonder if there's a priority (nice?) setting involved. @ charybdis: Do you have any insight? 

20220715, 17:50  #1759 
"Curtis"
Feb 2005
Riverside, CA
1010101100001_{2} Posts 
I have the same problem even one other thread running makes lingen take hours rather than minutes.
Even more strangely, this happens even if fewer total threads are running on a CPU than the number of cores it has. A 4threaded CADO with 4 copies of ECM on a 10core chip produces the same problem. 
20220716, 11:03  #1760 
"Garambois JeanLuc"
Oct 2011
France
977_{10} Posts 
Page updated.
Many thanks to all for your help. Thank you very much for notifying me of any oversights or malfunctions. Added bases : 179 (prime), 1210 (2cycle) and 31704 (28cycle). Updated bases : all the bases of the project ! Corrections : correction of erroneous allocations for bases 239 and 241 (see post #1735). Reservations : delete yoyo reservations for all bases for which yoyo has reached its limits according to this page. Sort categories : added the new factorial sort category to the page (many thanks to Karsten Bonath for his help !). The removal of yoyo reservations has freed up sequences of matched parity. The summer work has started well. I will do another full update in the middle of August before the big data harvest and certainly some smaller updates between now and then. I would still like to emphasize the question I asked in post #1756. It's a very important question and if anyone has a lead to give me, please don't hesitate to contact me. 
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