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Forum: Factoring 2022-01-21, 16:40
Replies: 23
Views: 645
Posted By VBCurtis
Only the first step (polynomial selection) is...

Only the first step (polynomial selection) is cuda-enabled.
If you use a version of msieve compiled for CUDA, it will automatically use the GPU for that step.
Forum: NFS@Home 2022-01-21, 00:57
Replies: 8
Views: 412
Posted By VBCurtis
Remember, big quartics really benefit from...

Remember, big quartics really benefit from unequal large-prime bounds. I bet this would have been faster as 31/33 (or maybe 32/33).
Forum: mersenne.ca 2022-01-20, 17:51
Replies: 805
Sticky: mersenne.ca
Views: 104,073
Posted By VBCurtis
Wow, that's a lot of missed factors! Thanks...

Wow, that's a lot of missed factors!

Thanks for the corrections, and sorry to suggest Zhang was mistaken.
Forum: mersenne.ca 2022-01-20, 15:43
Replies: 805
Sticky: mersenne.ca
Views: 104,073
Posted By VBCurtis
I suspect you misunderstand how P-1 bounds work....

I suspect you misunderstand how P-1 bounds work. Just because you find one doesn't mean the previous P-1 run missed it the way that TF report says "missed factor". Can you give us an example of an...
Forum: Factoring 2022-01-19, 17:03
Replies: 23
Views: 645
Posted By VBCurtis
If you can run linux, use cado-nfs. Everything...

If you can run linux, use cado-nfs. Everything is automated, you simply invoke "cado-nfs.py {input number}" and wait / watch. The job will run faster if you first fetch the updated parameters files...
Forum: Miscellaneous Math 2022-01-17, 18:27
Replies: 10
Views: 486
Posted By VBCurtis
It does? Where? When I teach it to children, I...

It does? Where? When I teach it to children, I don't do any division.
Please explain.

Also, next time you post code use tags
Forum: Cunningham Tables 2022-01-16, 18:29
Replies: 37
Views: 3,032
Posted By VBCurtis
Ya, sure- I'll have time sometime this week.

Ya, sure- I'll have time sometime this week.
Forum: NFS@Home 2022-01-16, 06:58
Replies: 14
Views: 332
Posted By VBCurtis
I don't recall any advice about max-31LP on...

I don't recall any advice about max-31LP on e-small- what would be the purpose in that? It's not in the first post of the old queue management thread, either. We aimed to restrict lim's for memory...
Forum: Aliquot Sequences 2022-01-15, 21:38
Replies: 1,410
Views: 158,395
Posted By VBCurtis
I certainly don't expect you to remember when I...

I certainly don't expect you to remember when I forgot!
OK, I'll handle 800^59 and 800^60 next month.
Forum: Aliquot Sequences 2022-01-15, 18:04
Replies: 1,410
Views: 158,395
Posted By VBCurtis
I did 800. I reserved it a few months ago, got...

I did 800. I reserved it a few months ago, got almost-done, and the desktop I was using for the work crashed. I forgot all about it!
You're welcome to finish the last couple of entries, or if you...
Forum: NFS@Home 2022-01-15, 03:28
Replies: 14
Views: 332
Posted By VBCurtis
With yield under 1.5 and that wide a Q-range,...

With yield under 1.5 and that wide a Q-range, you're likely to get an unpleasant duplicate ratio. A job this size really calls for 32-bit large primes, and I imagine 3LP on one side too. I bet yield...
Forum: Lounge 2022-01-13, 15:35
Replies: 1,190
Views: 125,234
Posted By VBCurtis
Professor: "Give an example of a vector space." ...

Professor: "Give an example of a vector space."

Student: "V"
Forum: CADO-NFS 2022-01-12, 23:11
Replies: 88
Views: 15,701
Posted By VBCurtis
Correct, msieve has no filtering equivalent to...

Correct, msieve has no filtering equivalent to required_excess. We use target_density as a proxy.

Yes, you can estimate based on how early the filtering failed; but it's easier to just try...
Forum: sweety439 2022-01-12, 07:06
Replies: 282
Views: 29,502
Posted By VBCurtis
Time for your periodic warning: Posting too...

Time for your periodic warning:
Posting too many attachments wastes forum resources. Your project does not need multiple update posts a day, ever. If you're finding so many things that you have...
Forum: Information & Answers 2022-01-11, 22:24
Replies: 9
Views: 426
Posted By VBCurtis
Factoring the number is sufficient to break the...

Factoring the number is sufficient to break the key. Your first idea was the time it takes your machine to crack the key; how to use the factors is a matter of understanding the RSA encryption...
Forum: Data 2022-01-11, 18:28
Replies: 1,147
Views: 140,921
Posted By VBCurtis
I'm honored! 10.46 looks hairy; the rest are...

I'm honored!

10.46 looks hairy; the rest are reachable with big P-1 alone (or slightly-less-big P-1 and a bit or two of TF- part of the fun is optimizing the combo, right?).

After I help Masser...
Forum: Hardware 2022-01-11, 15:35
Replies: 25
Views: 819
Posted By VBCurtis
OP mentions in post #9 that PFGW and pari-gp are...

OP mentions in post #9 that PFGW and pari-gp are the software packages to measure by, neither of which are GPU-enhanced.
Forum: Data 2022-01-11, 05:24
Replies: 58
Views: 1,224
Posted By VBCurtis
I like this idea best! I'm not sure 20 factors...

I like this idea best! I'm not sure 20 factors needs 10 TF levels- P-1 with 9% add'l probability does the same, and once that's done there would still be a 1/100 or 1/120 shot for each TF level. For...
Forum: Data 2022-01-11, 03:08
Replies: 58
Views: 1,224
Posted By VBCurtis
This forum is full of impossible projects- most...

This forum is full of impossible projects- most of CRUS, for instance. I maintain that a concrete goal with a variety of ways to move toward that goal is a worthy project, even if the actual finish...
Forum: Data 2022-01-11, 01:07
Replies: 58
Views: 1,224
Posted By VBCurtis
My view: Don't bother re-doing P-1 unless you're...

My view: Don't bother re-doing P-1 unless you're adding a zero to the already-done B1 bound.

But since a couple of folks seem to want to do another project after under-20k is done: How about,...
Forum: CADO-NFS 2022-01-10, 17:37
Replies: 88
Views: 15,701
Posted By VBCurtis
Random properties of the poly. No way to predict...

Random properties of the poly. No way to predict ahead of time what uniques ratio will be. However, as you note Q-range does influence uniques ratio. I am happy if I'm above 70% on a job.

I...
Forum: Miscellaneous Math 2022-01-10, 02:55
Replies: 17
Views: 945
Posted By VBCurtis
Since we pointed out that nobody cares enough to...

Since we pointed out that nobody cares enough to give replies about your quibbles, you should expect any replies to be off topic. I, for one, appreciate the poetry.
Forum: Hardware 2022-01-06, 20:21
Replies: 33
Views: 732
Posted By VBCurtis
I ran peltier cooling between my CPU and heatsink...

I ran peltier cooling between my CPU and heatsink back in the Celeron-300 days (stable at 504mhz for Prime95 for months!). When a peltier has no heat to pump, the cold side gets quite cold. The CPU...
Forum: CADO-NFS 2022-01-05, 19:16
Replies: 88
Views: 15,701
Posted By VBCurtis
Definitely *not* enough evidence! In fact, my...

Definitely *not* enough evidence! In fact, my target was 8 until your analysis of that C167. Now I say "7 to 8", and maybe I should say "7" pending further testing like the happily-detailed one you...
Forum: CADO-NFS 2022-01-05, 17:01
Replies: 88
Views: 15,701
Posted By VBCurtis
165 digits uses I=14, while 170 is using A=28....

165 digits uses I=14, while 170 is using A=28. With a larger siever, we expect to need a shorter Q-range.
I set Q-min as low as possible such that we expect the Q-max to Q-min ratio to be between 7...
Showing results 1 to 25 of 1000

 
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