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Forum: Miscellaneous Math 2021-06-10, 04:21
Replies: 128
Views: 6,617
Posted By VBCurtis
Mr Delo, I appreciate your sense of humor! ...

Mr Delo, I appreciate your sense of humor!

I'm sad this kid actually gets his wish instead of doing it himself, but it's really quite something for you to help him out. :)
Forum: Aliquot Sequences 2021-06-09, 23:34
Replies: 1,162
Views: 113,633
Posted By VBCurtis
Please update 13^54 and 13^70. My quest to...

Please update 13^54 and 13^70.
My quest to pink-ify base 13 continues.
Forum: Factoring 2021-06-09, 20:33
Replies: 239
Views: 5,461
Posted By VBCurtis
My understanding is that cownoise iterates around...

My understanding is that cownoise iterates around the theoretically-derived skew until it finds a local max for E-score.
Forum: Factoring 2021-06-09, 15:45
Replies: 239
Views: 5,461
Posted By VBCurtis
I agree that I=14 sounds slower; my experience is...

I agree that I=14 sounds slower; my experience is that I need about 10% fewer relations for a given job when going up a siever, but that 10% lower won't make up 6 hours.

I'm curious to hear how...
Forum: Factoring 2021-06-09, 13:18
Replies: 239
Views: 5,461
Posted By VBCurtis
I'd raise both large prime bounds by 2, and both...

I'd raise both large prime bounds by 2, and both mfb's by 4.
I'd consider I=13 and I=14, using whichever sieved faster (lower ETA after, say, 1% of the job or a couple workunits per client had...
Forum: NFS@Home 2021-06-08, 04:24
Replies: 96
Views: 6,949
Posted By VBCurtis
13_2_882m has built a 19.5M matrix at TD=116. ...

13_2_882m has built a 19.5M matrix at TD=116. It'll take me 12 days or so to solve.
Forum: Lounge 2021-06-07, 03:16
Replies: 25
Views: 782
Posted By VBCurtis
But.. his audience is MF users, who are over 90%...

But.. his audience is MF users, who are over 90% male. The lack of female regulars here make it a reasonable (though not obvious) belief that no person who participated in this survey is female.
...
Forum: Cloud Computing 2021-06-06, 00:35
Replies: 63
Views: 25,616
Posted By VBCurtis
Please show your work. How did you calculate...

Please show your work. How did you calculate this? By "cost-effective", you mean lowest cost per prp test (for a candidate of fixed size), right?
Forum: Miscellaneous Math 2021-06-05, 20:57
Replies: 128
Views: 6,617
Posted By VBCurtis
You quoted my post and my questions, but didn't...

You quoted my post and my questions, but didn't address why your machine overheats; you merely confirmed that it does. Why does it do so? "it's old" isn't a cause of overheating.

So, I'll repeat...
Forum: Factoring 2021-06-03, 13:45
Replies: 36
Views: 1,280
Posted By VBCurtis
For GNFS, Q-max to Q-min ratio around 8 is best-...

For GNFS, Q-max to Q-min ratio around 8 is best- after Charybdis did his testing on a large job, I repeated the tests for C110-C140 and confirmed his findings. I now use Qmin = 150k for the C120...
Forum: Factoring 2021-06-02, 14:41
Replies: 36
Views: 1,280
Posted By VBCurtis
It's advisable to experiment a lot, as you are...

It's advisable to experiment a lot, as you are doing. That's how we all learned!
SNFS jobs have fewer "do it this way" guidelines, more job-specific settings.
I'm surprised there is a factor-of-2...
Forum: Factoring 2021-06-01, 19:09
Replies: 36
Views: 1,280
Posted By VBCurtis
When the norms of the two sides are quite...

When the norms of the two sides are quite different in size, CADO is more efficient when making the side with the larger norm also have a larger lim.
Since your job has anorm and rnorm very similar...
Forum: Factoring 2021-06-01, 17:47
Replies: 36
Views: 1,280
Posted By VBCurtis
I think you'll fly through all the composites...

I think you'll fly through all the composites under 2^600 for your chosen k-value rather quickly now. :)

I'd try making lim0 and lim1 the same (use the larger of the two from my C120 file)....
Forum: Factoring 2021-05-31, 21:43
Replies: 36
Views: 1,280
Posted By VBCurtis
Does CADO compute skew automagically, or does Bur...

Does CADO compute skew automagically, or does Bur need to supply it?

If you need it, I suggest you use myfactors.mooo.com, "calculators" link at the top of the page. Enter your poly, and the...
Forum: Software 2021-05-31, 03:16
Replies: 27
Views: 6,270
Posted By VBCurtis
No, Prime95 does not call that a hardware error. ...

No, Prime95 does not call that a hardware error. Prime95 retries the computation when roundoff is too big, and if reproducible it prints a "error is reproducible, not a hardware error." Usually...
Forum: Factoring 2021-05-31, 03:09
Replies: 36
Views: 1,280
Posted By VBCurtis
I tried this: I tried OP's 1281979*2^n+1, with n...

I tried this: I tried OP's 1281979*2^n+1, with n = 647. Multiplying by 8 to make a poly ending in +8 and Y0 = 2^130 had score 6.444e-12, while factoring out a 4 and making a poly ending in +1 with...
Forum: Factoring 2021-05-30, 14:47
Replies: 36
Views: 1,280
Posted By VBCurtis
For your proth searches, you want to write your...

For your proth searches, you want to write your input number as a * (x^5) + c.
Then c5 = a, c0 = c, y1 = 1, y0 = x (I forget if it's positive or negative).

5th degree polys are best for roughly...
Forum: Software 2021-05-29, 23:08
Replies: 27
Views: 6,270
Posted By VBCurtis
You should reduce the overclock, since you have...

You should reduce the overclock, since you have found a speed / setting combination that produces hardware errors.
Forum: Hardware 2021-05-29, 23:07
Replies: 5
Views: 210
Posted By VBCurtis
You haven't broken it. You may have uncovered...

You haven't broken it. You may have uncovered that it doesn't handle full-power heat generation anymore (say, from dust accumulation), or you may have uncovered a bad memory stick.

If it's a...
Forum: Hardware 2021-05-29, 19:13
Replies: 18
Views: 1,626
Posted By VBCurtis
Why do you think AMD has no problems with miners?...

Why do you think AMD has no problems with miners? If an AMD card comes along that is very useful for we mathematicians, why wouldn't it also be very useful for mining?
Forum: NFS@Home 2021-05-29, 16:40
Replies: 7
Views: 279
Posted By VBCurtis
Welcome! You and your question are in exactly...

Welcome! You and your question are in exactly the right place.

I just tried to go the the NFS@home website to try to discover which job is failing, but the site appears to be down. So, perhaps...
Forum: CADO-NFS 2021-05-29, 16:30
Replies: 44
Views: 8,444
Posted By VBCurtis
5.5M matrix is still a bit on the small side. I...

5.5M matrix is still a bit on the small side. I bet 155M relations would work fine; if you don't mind spending the time to check, I'd appreciate it.

Note that CADO and msieve measure density in...
Forum: Msieve 2021-05-29, 16:23
Replies: 5
Views: 438
Posted By VBCurtis
This happens somewhat often when using CADO to...

This happens somewhat often when using CADO to poly select and sieve, but msieve for post-processing. CADO doesn't care if the leading coeff is negative, but msieve does.

That's just to say this...
Forum: Lounge 2021-05-27, 16:45
Replies: 25
Views: 782
Posted By VBCurtis
When I fell into my career, I found I saved by...

When I fell into my career, I found I saved by accident more than I needed. So, I set a plan to save for a "dream car" as a way to give purpose to the money I wasn't spending. Used exotic cars...
Forum: Lounge 2021-05-26, 21:18
Replies: 25
Views: 782
Posted By VBCurtis
I chose mostly delayed: I'm just a few years...

I chose mostly delayed:
I'm just a few years away from retiring from teaching at age 50. I was really frugal in my 20s figuring I'd save until I had kids and then I forgot to have kids.

Small...
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