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Search: Posts Made By: VBCurtis
Forum: NFS@Home 2021-05-10, 16:52
Replies: 96
Views: 6,200
Posted By VBCurtis
It's nice to have hard evidence that both-sides...

It's nice to have hard evidence that both-sides sieving is not helpful unless our choice of siever is restricted. Thanks for posting data!
Forum: CADO-NFS 2021-05-10, 14:35
Replies: 19
Views: 6,277
Posted By VBCurtis
Doesn't matter whether msieve or cado does the...

Doesn't matter whether msieve or cado does the matrix; I use matrix size as a marker for whether target_relations was set too high or too low.

Final Q can be found in the log, though it's not in...
Forum: CADO-NFS 2021-05-10, 02:32
Replies: 43
Views: 12,469
Posted By VBCurtis
I've posted a draft c165 file in the thread for...

I've posted a draft c165 file in the thread for 165-170 digit work:
https://mersenneforum.org/showthread.php?t=25535

It should be decent, as it is based on the c170 file that has had a few jobs...
Forum: CADO-NFS 2021-05-10, 02:31
Replies: 19
Views: 6,277
Posted By VBCurtis
Bur requested a 165 params file, so I attach a...

Bur requested a 165 params file, so I attach a draft here.

If you use this file, please report:
1. Did filtering work the first time, or did CADO bounce back and forth between filtering and...
Forum: CADO-NFS 2021-05-08, 13:59
Replies: 43
Views: 12,469
Posted By VBCurtis
Sure, I can post a draft. There hasn't been a...

Sure, I can post a draft. There hasn't been a ton of testing at that size, but Charybdis did a few jobs. I'll track down the data this weekend and get one posted to this thread.
Forum: Riesel Prime Search 2021-05-08, 02:30
Replies: 548
Views: 53,959
Posted By VBCurtis
Nope, campus remains officially closed until at...

Nope, campus remains officially closed until at least 30 June. Won't be able to check the 3 desktops that run in my office until July.
Forum: Riesel Prime Search 2021-05-08, 02:21
Replies: 661
Views: 77,194
Posted By VBCurtis
There's about 1750 candidates in the file. At...

There's about 1750 candidates in the file. At 8000 sec/candidate, I clear just over 10 per day per core.
It ran on one core for a couple weeks, with a second core started up just before 1May. So,...
Forum: Aliquot Sequences 2021-05-07, 20:56
Replies: 1,097
Views: 98,398
Posted By VBCurtis
I agree that "open end" does not need...

I agree that "open end" does not need subcategories.

Thank you for putting pink in; I'll now proceed to turn all the orange sequences in base 13 pink.

13^78 can be updated in this weekend's...
Forum: Software 2021-05-06, 22:05
Replies: 13
Views: 382
Posted By VBCurtis
This. Please, you're long past a clueless...

This. Please, you're long past a clueless beginner now, and you're surely bright enough to answer many of your own questions.
The forum generally likes having threads of reasonable questions with...
Forum: NFS@Home 2021-05-06, 02:15
Replies: 1
Views: 101
Posted By VBCurtis
This depends quite heavily on what size large...

This depends quite heavily on what size large primes are in use. 200M relations is just getting started for a 33LP job, and will still have pleasant duplication rates in the 20% range.

Also, the...
Forum: CADO-NFS 2021-05-03, 14:45
Replies: 21
Views: 4,986
Posted By VBCurtis
CADO's algorithm features less interprocess...

CADO's algorithm features less interprocess communication during the (longest) first stage of matrix solving than msieve, which allows jobs to be split among machines fruitfully. This allows larger...
Forum: NFS@Home 2021-05-03, 05:21
Replies: 73
Views: 4,605
Posted By VBCurtis
If you run msieve filtering more than once (say,...

If you run msieve filtering more than once (say, with different target densities, or after more rels have come in), then removing duplicates once with remdups instead of every time msieve runs is a...
Forum: NFS@Home 2021-05-02, 14:34
Replies: 73
Views: 4,605
Posted By VBCurtis
How does msieve ever see the raw relations count,...

How does msieve ever see the raw relations count, if you run remdups first? I mean, the whole point of remdups is to feed msieve only the uniques.

You're correct about that log *if* remdups is not...
Forum: NFS@Home 2021-05-02, 02:30
Replies: 73
Views: 4,605
Posted By VBCurtis
The data point not in the log file that remdups...

The data point not in the log file that remdups provides, and I think is useful to others / future, is uniques vs raw relations. I post that data on almost every factor report.

For instance, an...
Forum: Aliquot Sequences 2021-05-01, 23:23
Replies: 1,097
Views: 98,398
Posted By VBCurtis
13^74 and 13^76 are updated. I got one of them...

13^74 and 13^76 are updated. I got one of them over 160 digits; you may unreserve that one, as I do not expect to extend it further.

13^78 caught the downdriver, so it's not yet to 120 digits...
Forum: NFS@Home 2021-05-01, 07:35
Replies: 28
Views: 4,224
Posted By VBCurtis
I think the lower bound for e-small is any job...

I think the lower bound for e-small is any job that is no slower on 15e than on 14e. Jobs that are clearly faster on 14e should still go there (until the 14e queue disappears entirely, but I think...
Forum: NFS@Home 2021-04-30, 19:12
Replies: 28
Views: 4,224
Posted By VBCurtis
I don't understand why we need to feed 14 at all....

I don't understand why we need to feed 14 at all. I thought the idea was to intentionally let it run dry, only feeding it jobs that are clearly inefficient on 15e; when it's dry, more workunits get...
Forum: Factoring 2021-04-30, 04:24
Replies: 14
Views: 827
Posted By VBCurtis
If my only interest was using those two pieces of...

If my only interest was using those two pieces of hardware to factors numbers as fast as possible, I'd run GNFS and ECM in parallel, with a queue of 2-3 numbers that survived ECM and are ready for...
Forum: Factoring 2021-04-29, 15:51
Replies: 14
Views: 827
Posted By VBCurtis
This depends on what else you'd like to use the...

This depends on what else you'd like to use the GPU for, and what you metric is for efficiency.

If you want to use the GPU to speed your factoring progress, then do it. If you want to minimize the...
Forum: CADO-NFS 2021-04-29, 15:47
Replies: 522
Sticky: CADO NFS
Views: 79,909
Posted By VBCurtis
See post 502 and the replies for the lingen bug.

See post 502 and the replies for the lingen bug.
Forum: Hardware 2021-04-28, 04:25
Replies: 77
Views: 9,007
Posted By VBCurtis
Straight from the Dilbert book of management,...

Straight from the Dilbert book of management, this. Doubly so when it's used a a reply to someone who *does* have knowledge of these things indicating that it has (a) been thought of before and (b)...
Forum: CADO-NFS 2021-04-28, 00:05
Replies: 522
Sticky: CADO NFS
Views: 79,909
Posted By VBCurtis
I don't know how I would test to answer that...

I don't know how I would test to answer that question.

Also, it may be that I updated from Ubuntu 18.04 to 20.04 some time between building the May '20 version and the newer ones, so gcc version...
Forum: Miscellaneous Math 2021-04-27, 22:57
Replies: 13
Views: 341
Posted By VBCurtis
663MB for 2^64 list. 2^79 is 32000x bigger than...

663MB for 2^64 list. 2^79 is 32000x bigger than 2^64, so such a list would be.... big.

I think you'd be better off generating such a list live and testing them as they're generated. I'd rather...
Forum: CADO-NFS 2021-04-27, 22:54
Replies: 522
Sticky: CADO NFS
Views: 79,909
Posted By VBCurtis
Hrm... it's happening on my single-socket...

Hrm... it's happening on my single-socket 12-core, even when I invoke CADO 2- or 4- threaded. I considered maybe I was setting matrix too sparse, returned my params to factory for filtering + LA but...
Forum: CADO-NFS 2021-04-27, 22:14
Replies: 522
Sticky: CADO NFS
Views: 79,909
Posted By VBCurtis
Or, what happens when you put one of my params...

Or, what happens when you put one of my params files into the parameters/factor folder (renamed to replace the default one)? I've always just replaced the stock files with the new ones; if you like,...
Showing results 1 to 25 of 1000

 
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