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Search: Posts Made By: bur
Forum: Factoring 2021-06-15, 17:47
Replies: 289
Views: 7,181
Posted By bur
It's getting funny. Cado failed at square root as...

It's getting funny. Cado failed at square root as expected. And msieve then decided it's too few relations to build a matrix and requested 1,000,000 more. For good measure I now have cado sieve 2M...
Forum: Factoring 2021-06-15, 14:57
Replies: 289
Views: 7,181
Posted By bur
So it seems I should have taken the time to...

So it seems I should have taken the time to convert everything to msieve...

I had that problem with "no suitable prime" before, I think I used msieve and as you said, it worked. Going from cado...
Forum: Factoring 2021-06-15, 12:50
Replies: 289
Views: 7,181
Posted By bur
I'd still like to see this run with the...

I'd still like to see this run with the alternative parameters. Or with alternative poly.

The relations are 3.8 GB in gzip'ed form. If you're interested in them, I could upload them somewhere.
Forum: Factoring 2021-06-15, 11:07
Replies: 289
Views: 7,181
Posted By bur
It's finally at the linear algebra stage, took...

It's finally at the linear algebra stage, took 31.1e6 relations instead of the initially estimated 17.6e6.

I let cado do the LA, ETA for krylov is 4 hours, so the total will be about 156 hours....
Forum: YAFU 2021-06-15, 08:42
Replies: 9
Views: 361
Posted By bur
On my system yafu won't even quit when switching...

On my system yafu won't even quit when switching to new B1/B2 values, i.e. when it reached the NFS stage. Maybe it'd be possible to catch the Ctrl-C and exit when yafu switches to the next B1 value?...
Forum: Factoring 2021-06-15, 06:08
Replies: 289
Views: 7,181
Posted By bur
Then hopefully the current sieving will be the...

Then hopefully the current sieving will be the last one, -536571 excess.

In that regard, I think at some point both cado and msieve go through several filtering iterations in which the excess...
Forum: Factoring 2021-06-14, 17:41
Replies: 289
Views: 7,181
Posted By bur
If it's unique relations, then it's only missing...

If it's unique relations, then it's only missing 1.2e6 more, which is about 2e6 relations. I'm not sure if that estimate is correct anyway, since this is the 7th or so round of filtering. ETA is in 7...
Forum: Factoring 2021-06-14, 13:50
Replies: 289
Views: 7,181
Posted By bur
Back to filtering again: Does the last line...

Back to filtering again:
Does the last line mean, it needs 17409881 relations after singleton removal?

From 27000000 unfiltered relations came only 11467661 relations. If really 17.4e6 are...
Forum: Factoring 2021-06-13, 05:34
Replies: 289
Views: 7,181
Posted By bur
The sieving goes on... 21,608,085/22,162,816 ...

The sieving goes on... 21,608,085/22,162,816



I was hoping the estimation was good, because I got a similar value of 17,000,000 with the function that yafu uses.


Well, as long as it won't...
Forum: Hardware 2021-06-13, 05:25
Replies: 3
Views: 147
Posted By bur
Ok; good thing the HT comes in handy for once....

Ok; good thing the HT comes in handy for once. Shouldn't the CPU utilization be below 100%/core then though?



AVX could play a role, too, but 80-90 W is far from what the CPU has as its default...
Forum: Hardware 2021-06-12, 06:10
Replies: 3
Views: 147
Posted By bur
Lower power consumption when sieving

CPU: Ryzen 9 3900x
RAM: 16 GB DDR4
Storage: Samsung 970 Evo
Windows 10


I was doing LLR on the 12 cores for a few months and to keep the room temperature low I throttled PPT to 128 W which...
Forum: Factoring 2021-06-12, 05:38
Replies: 289
Views: 7,181
Posted By bur
Quick update to the c165: Initial...

Quick update to the c165:


Initial relations wanted was 17032060, after filtering cado decided it needs 17820319. ETA is about 3-4 hours. I hope this won't repeat too often... :D


There were...
Forum: Proth Prime Search 2021-06-11, 10:59
Replies: 13
Views: 3,371
Posted By bur
All n < 4,100,000 have been tested, no new primes...

All n < 4,100,000 have been tested, no new primes other than the ones already posted.


Currently I'm sieving in the range of 4,100,000 < n < 10,000,000.

Smallest p-P range in progress:...
Forum: XYYXF Project 2021-06-10, 14:31
Replies: 465
Views: 89,711
Posted By bur
Ok, thanks.

Ok, thanks.
Forum: XYYXF Project 2021-06-10, 09:06
Replies: 465
Views: 89,711
Posted By bur
Impressive compilation. Do you have data on which...

Impressive compilation. Do you have data on which of the numbers are just PRPs? It would make a nice list of candidates for primo.
Forum: CADO-NFS 2021-06-10, 08:06
Replies: 44
Views: 8,600
Posted By bur
I missed your reply, I'll run tests on the...

I missed your reply, I'll run tests on the minimum number of relations after that strange C165 SNFS factorization finishes.

I entered the poly parameters into myfactor, but it came up with a...
Forum: Factoring 2021-06-10, 06:01
Replies: 289
Views: 7,181
Posted By bur
Yes, that's also part of the reason why I...

Yes, that's also part of the reason why I continued with it. ETA increased overnight to a total of 60 hours.

Sieving is fast per q though, approximately 180 s / 10,000 q (usually 600 s). Due to...
Forum: Factoring 2021-06-09, 13:55
Replies: 289
Views: 7,181
Posted By bur
For I=13 that results in 18000 rels / 10000 q,...

For I=13 that results in 18000 rels / 10000 q, but also in 63e6 rels wanted and an ETA of 38 h (34 h for initial parameters), so unless the previous relations were grossly underestimated that...
Forum: Factoring 2021-06-09, 07:16
Replies: 289
Views: 7,181
Posted By bur
Cado is running, but finds very few relations...

Cado is running, but finds very few relations already at low q, about 3000-5000 rel / 10,000 q, ETA right now (0.3% done) is 34 hours, though that usually increases. Much faster than GNFS (7-8 days...
Forum: Factoring 2021-06-07, 14:56
Replies: 289
Views: 7,181
Posted By bur
cado chokes on the number being divisible by 5,...

cado chokes on the number being divisible by 5, if I just divide it and use that as n it still fails:
Error:Generate Factor Base: Stderr output (last 10 lines only) follow (stored in
file...
Forum: Factoring 2021-06-07, 13:18
Replies: 289
Views: 7,181
Posted By bur
Thanks, I used to use vbcurtis' optimized...

Thanks, I used to use vbcurtis' optimized parameters, though of course those are optimized for GNFS, so I'll give those a try.
Forum: Factoring 2021-06-07, 13:01
Replies: 289
Views: 7,181
Posted By bur
It seems the c134 was removed by GCD, so no...

It seems the c134 was removed by GCD, so no sneaky poacher (good thing I didn't write a 2 page rant).

Regarding the SNFS difficulty, how does it relate to GNFS difficulty? I'd use yafu for that,...
Forum: Factoring 2021-06-07, 11:13
Replies: 289
Views: 7,181
Posted By bur
Ok, thanks. I was reluctant because EdH reported...

Ok, thanks. I was reluctant because EdH reported he had no success when square root failed to use msieve, but I'll give it a try and report back.

Someone already factored it and reported to...
Forum: Factoring 2021-06-06, 20:01
Replies: 289
Views: 7,181
Posted By bur
Cado failed at square root stage with ...

Cado failed at square root stage with

Error, found no suitable prime up to 1000000


Any idea what might be the problem?
Forum: Factoring 2021-06-06, 18:09
Replies: 289
Views: 7,181
Posted By bur
I honestly don't remember if I factored the...

I honestly don't remember if I factored the number already, thanks for noticing... :D


Anyway, same problem on next composite, I used the CADO converter to convert it to msieve fb and back to...
Showing results 1 to 25 of 239

 
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