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Search: Posts Made By: chris2be8
Forum: YAFU 2022-08-10, 15:59
Replies: 397
Views: 53,048
Posted By chris2be8
To recover data from a damaged .gz file try...

To recover data from a damaged .gz file try gzrecover. My script to recover from rubbish in relations from NFS@Home uses:

gzrecover -p $GZ | remdups 1250 -v >$DAT


$GZ is file to process....
Forum: And now for something completely different 2022-08-10, 15:34
Replies: 172
Views: 37,922
Posted By chris2be8
See...

See https://mersenneforum.org/showthread.php?p=611140#post611140 posts 446 and 447. You may need to re-submit any certificates submitted in the last two days.
Forum: FactorDB 2022-08-10, 15:33
Replies: 446
Views: 86,575
Posted By chris2be8
Markus has replied to an email I sent, there was...

Markus has replied to an email I sent, there was a bug in certificate processing. It's now fixed, but certificates submitted since Monday 8 August will need to be re-submitted.

So I've re-started...
Forum: FactorDB 2022-08-09, 15:51
Replies: 446
Views: 86,575
Posted By chris2be8
factordb seems to have stopped accepting new...

factordb seems to have stopped accepting new primo certificates. If I submit a certificate the response says "Saved certificate for processing.." but when I look at the number it still shows as PRP...
Forum: Msieve 2022-08-09, 15:38
Replies: 1
Views: 59
Posted By chris2be8
Run msieve -h (or ./msieve -h in the directory it...

Run msieve -h (or ./msieve -h in the directory it is in). The first line of output should look something like this:

Msieve v. 1.54 (SVN 1022)


Or just look at output from running msieve. It...
Forum: Msieve 2022-08-07, 15:33
Replies: 124
Views: 30,580
Posted By chris2be8
That's not a problem. From the makefile: ...

That's not a problem. From the makefile:

SVN_VERSION := $(shell svnversion .)
ifeq ($(SVN_VERSION),)
SVN_VERSION := unknown
endif


If you did a svn checkout to fetch msieve that would set...
Forum: FactorDB 2022-08-06, 15:44
Replies: 571
Views: 108,038
Posted By chris2be8
There is a corrupt entry in factordb between...

There is a corrupt entry in factordb between 23770 digits and 24300 digits. But we will have to wait for Markus to fix it.
Forum: NFS@Home 2022-08-06, 15:35
Replies: 463
Views: 58,990
Posted By chris2be8
@sweety439, what hardware have you got? Then we...

@sweety439, what hardware have you got? Then we should be able to tell you how long it will take you to factor them.
Forum: Msieve 2022-08-05, 15:40
Replies: 124
Views: 30,580
Posted By chris2be8
You might get some more information by running...

You might get some more information by running /usr/local/cuda-11.6/extras/demo_suite/deviceQuery (change cuda-11.6 in the path if necessary). You should get something like:
...
Forum: FactorDB 2022-08-03, 15:52
Replies: 71
Views: 18,916
Posted By chris2be8
I did send Markus an email suggesting he reported...

I did send Markus an email suggesting he reported that doofus to the police. But he decided not to.
Forum: FactorDB 2022-08-03, 15:49
Replies: 71
Views: 18,916
Posted By chris2be8
I have seen some cases where I was looking at a...

I have seen some cases where I was looking at a number, A, clicked "More information", saw it was a factor of another number, B, but when I looked at B that didn't show as having any factors.

In...
Forum: NFS@Home 2022-08-03, 15:38
Replies: 101
Views: 6,426
Posted By chris2be8
@bur, please check your gnfs/filter/filter.c to...

@bur, please check your gnfs/filter/filter.c to see what DEFAULT_TARGET_DENSITY you have.
Forum: Linux 2022-08-01, 16:18
Replies: 10
Views: 498
Posted By chris2be8
Do you mean *before* or *after* you log on to the...

Do you mean *before* or *after* you log on to the computer?
What ID should the script run as?
What terminal emulator are you using?

To run as yourself after logging on call it from .bashrc (or...
Forum: NFS@Home 2022-08-01, 15:46
Replies: 101
Views: 6,426
Posted By chris2be8
The default is 70. From gnfs/filter/filter.c: ...

The default is 70. From gnfs/filter/filter.c:

#define DEFAULT_TARGET_DENSITY 70.0


I don't think target_density makes much difference unless you have a *large* matrix to solve.
Forum: FactorDB 2022-07-28, 16:13
Replies: 446
Views: 86,575
Posted By chris2be8
Is anyone on mersenneforum generating Primo certs...

Is anyone on mersenneforum generating Primo certs for numbers around 964 digits? I'm running a script to prove small PRPs, working from 300 digits upwards, and I've noticed a lot of numbers where...
Forum: XYYXF Project 2022-07-22, 15:52
Replies: 31
Views: 3,125
Posted By chris2be8
If it's the web page I think it is I'd saved a...

If it's the web page I think it is I'd saved a copy on my PC. I've just copied it to http://kendon.info/chris/SNFS_Polynomial_Selection.html (I hope this isn't a breach of copyright).

Of course...
Forum: Information & Answers 2022-07-16, 15:27
Replies: 16
Views: 478
Posted By chris2be8
Try running memtest86 (both single and...

Try running memtest86 (both single and multi-threaded) with memory configs that cause errors and configs that don't. That should tell you if the memory is faulty.

Also can you run temperature...
Forum: NFS@Home 2022-07-13, 15:47
Replies: 5
Views: 315
Posted By chris2be8
Having a script to do that: First poly: ...

Having a script to do that:

First poly:
msieve rating: skew 61.17, size 2.730e-13, alpha -2.577, combined = 4.752e-14 rroots = 2

Second poly:
msieve rating: skew 60.77, size 9.310e-14, alpha...
Forum: Hardware 2022-07-12, 15:43
Replies: 158
Views: 22,304
Posted By chris2be8
I'm planning to cut back on how much factoring...

I'm planning to cut back on how much factoring etc I do, once I've finished factoring a few numbers I've already ECMed.

This is mainly to cut Putin's scope to hurt Europe, not just to save money....
Forum: Aliquot Sequences 2022-07-06, 15:36
Replies: 601
Views: 97,358
Posted By chris2be8
I'm afraid I've never used aliqueit (with or...

I'm afraid I've never used aliqueit (with or without yafu) so I can't help. Sorry.

bsquared wrote yafu so he might be able to help.
Forum: NFS@Home 2022-06-23, 15:34
Replies: 101
Views: 6,426
Posted By chris2be8
f51_169m1 is done: p102 factor:...

f51_169m1 is done:

p102 factor: 114213756658451379288919972052183125087891155576079838656931993933276416169564079752526147055200489959
p166 factor:...
Forum: Factoring 2022-06-22, 16:21
Replies: 504
Views: 79,141
Posted By chris2be8
Update, I've generated a .poly for 13^288+1 and...

Update, I've generated a .poly for 13^288+1 and msieve rates it's e-score as 4.429e-12 which is only slightly worse that the record for GNFS 152 (5.193e-12). So SNFS might be quicker since it saves...
Forum: Factoring 2022-06-22, 15:37
Replies: 504
Views: 79,141
Posted By chris2be8
13^282+1 is probably easier by GNFS, SNFS 210 is...

13^282+1 is probably easier by GNFS, SNFS 210 is about as hard as GNFS 155, but 13^282+1's cofactor is 147 digits.

13^288+1 is about equal difficulty by SNFS and GNFS. SNFS 214 is about as hard as...
Forum: Aliquot Sequences 2022-06-15, 15:52
Replies: 1,810
Views: 209,957
Posted By chris2be8
My first cut would be: Put all primes into a...

My first cut would be:

Put all primes into a flat file, called primes.txt below.
sort <primes.txt | uniq --repeated >primes.duplicates

That should get a list of all primes that appear more...
Forum: NFS@Home 2022-06-15, 15:43
Replies: 101
Views: 6,426
Posted By chris2be8
f51_169m1 has built a matrix, with...

f51_169m1 has built a matrix, with target_density=130. LA should finish in about 189 hours.

I seem to have underestimated the yield, so it's very oversieved (536,217,998 relations). -nc1 took...
Showing results 1 to 25 of 1000

 
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