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Forum: CADO-NFS 2020-08-06, 14:54
Replies: 3
Views: 85
Posted By RedGolpe
Thank you, it worked.

Thank you, it worked.
Forum: CADO-NFS 2020-08-06, 13:51
Replies: 3
Views: 85
Posted By RedGolpe
CADO-NFS error

Hi all, I am factoring a C143 but the program stopped in error, with no mention of what kind. Here are the last few lines diplayed.

Info:Square Root: Creating file of (a,b) values...
Forum: FactorDB 2020-08-05, 11:47
Replies: 1
Views: 138
Posted By RedGolpe
List of commands for factordb

I tried to find all possible GET commands/parameters for factordb (like "api?query=", "report.php?report=" etc) in one place, but I keep getting different resources, disparate github repositories and...
Forum: Aliquot Sequences 2020-03-27, 19:53
Replies: 3,310
Views: 246,801
Posted By RedGolpe
Take 1905096. I'm new to this subforum,...

Take 1905096.

I'm new to this subforum, here's what I got from the various sources: I reserve a sequence so I'm reasonably sure no one else wastes CPU on it. Upload results to factordb from time...
Forum: EdH 2020-03-27, 15:28
Replies: 88
Views: 9,521
Posted By RedGolpe
Results on Ubuntu 18.04.4 with yafu v1.35-beta,...

Results on Ubuntu 18.04.4 with yafu v1.35-beta, GMP-ECM 7.0.5-dev, GMP 6.2.0, Msieve 1.54 (patched) of factor(2^308+97):

Intel(R) Core(TM) i7-7800X CPU @ 3.50GHz (skylake), 12 logical processors,...
Forum: EdH 2020-03-26, 18:35
Replies: 88
Views: 9,521
Posted By RedGolpe
It looks like it's working, no errors on any...

It looks like it's working, no errors on any input so far with the msieve patch. I assume you have means to directly contact the author about the needed fix. Thank you for the time you spend on this...
Forum: EdH 2020-03-26, 17:39
Replies: 88
Views: 9,521
Posted By RedGolpe
SIQS seems to work for any number. Segfaults seem...

SIQS seems to work for any number. Segfaults seem confined to composites for which NFS is invoked.>> siqs(2^308+97)

starting SIQS on c93:
[...]
***factors found***

P6 = 785033
P41 =...
Forum: EdH 2020-03-26, 17:03
Replies: 88
Views: 9,521
Posted By RedGolpe
factor(2) now works but factor(2^308+97) still...

factor(2) now works but factor(2^308+97) still segfaults.redgolpe@c2018:~/yafu$ ./yafu


03/26/20 18:00:43 v1.35-beta @ c2018, System/Build Info:
Using GMP-ECM 7.0.5-dev, Powered by GMP 6.2.0...
Forum: EdH 2020-03-26, 16:21
Replies: 88
Views: 9,521
Posted By RedGolpe
I tried again but I can't manage "make" to work,...

I tried again but I can't manage "make" to work, apparently with any combination of the flags NFS=1 SKYLAKEX=1 USE_BMI2=1 USE_AVX2=1. At least, all tries with various flags seem to produce the same...
Forum: EdH 2020-03-24, 20:53
Replies: 88
Views: 9,521
Posted By RedGolpe
I just discovered that factor(2^308+97) also...

I just discovered that factor(2^308+97) also fails but has no factors below 10000. However, it fails with>> factor(2^308+97)
fac: factoring...
Forum: EdH 2020-03-24, 20:30
Replies: 88
Views: 9,521
Posted By RedGolpe
I tried factor(p) on primes of various size on my...

I tried factor(p) on primes of various size on my almost-working build. It apparently segfaults for all primes below 10000 and succeeds for all primes above. It also seems to segfault for all...
Forum: EdH 2020-03-24, 20:05
Replies: 88
Views: 9,521
Posted By RedGolpe
Does factor(2) even invoke GMP?

Does factor(2) even invoke GMP?
Forum: EdH 2020-03-24, 15:53
Replies: 88
Views: 9,521
Posted By RedGolpe
Actually it didn't as the seg fault reappeared...

Actually it didn't as the seg fault reappeared with new factorizations: see the following messages. As I said, it even fails with factor(2) which should be a good target for debugging: if I can help...
Forum: EdH 2020-03-23, 22:04
Replies: 88
Views: 9,521
Posted By RedGolpe
Attempting make with various flags except AVX2...

Attempting make with various flags except AVX2 fails for me. For example:
make NFS=1 SKYLAKEX=1 USE_BMI2=1 results in factor/qs/SIQS.o: In function `process_poly':...
Forum: EdH 2020-03-23, 21:14
Replies: 88
Views: 9,521
Posted By RedGolpe
I spoke too soon. While I was able to run "tune"...

I spoke too soon. While I was able to run "tune" after installing the ggnfs binaries, the frag fault has returned on a C89. At least it looks like the problem is reproducible as only specific numbers...
Forum: EdH 2020-03-23, 18:52
Replies: 88
Views: 9,521
Posted By RedGolpe
If this can be of any use, I'm fine with yafu...

If this can be of any use, I'm fine with yafu v1.35-beta, GMP-ECM 7.0.5-dev, GMP 6.2.0, Msieve v. 1.54 (SVN 1030) compiled with gcc 7.5.0 on Ubuntu 18.04.4 LTS. I have not (yet) installed the ggnfs...
Forum: EdH 2020-03-23, 18:36
Replies: 88
Views: 9,521
Posted By RedGolpe
Indeed. Again, thank you for your time. So I...

Indeed. Again, thank you for your time.

So I downloaded the wip version, modified the relevant files (note that Makefile attempts to run "gcc-7.3.0", which I edited in just "gcc"). Also, running...
Forum: EdH 2020-03-23, 15:13
Replies: 88
Views: 9,521
Posted By RedGolpe
That was just the leftover from the previous...

That was just the leftover from the previous tune, which still failed. I gave it a shot anyway, but no luck:redgolpe@c2018:~$ mkdir yafu-tmp
redgolpe@c2018:~$ cd yafu-tmp
redgolpe@c2018:~/yafu-tmp$...
Forum: EdH 2020-03-23, 14:10
Replies: 88
Views: 9,521
Posted By RedGolpe
Thank you both for the quick replies. I have...

Thank you both for the quick replies.

I have recompiled it withmake clean
make x86_64 NFS=1to stay on the safest side.

Here's the report of the -v -v run on the same C80 failing the...
Forum: EdH 2020-03-22, 21:15
Replies: 88
Views: 9,521
Posted By RedGolpe
Hi all, I am trying to install yafu (trunk) on an...

Hi all, I am trying to install yafu (trunk) on an Ubuntu subsystem but when I run./yafu "tune"or any SIQS factorization I too obtain a segmentation fault error. Although cpuinfo reports both flags, I...
Forum: Factoring 2011-11-03, 15:07
Replies: 5
Views: 813
Posted By RedGolpe
I obviously didn't make myself clear, so I'll try...

I obviously didn't make myself clear, so I'll try with an example. Let's take the 37th Fibonacci number, 24157817. We know that at least one of its factors (say, x) is congruent to -1 (mod 37). As...
Forum: Factoring 2011-11-03, 09:06
Replies: 5
Views: 813
Posted By RedGolpe
Factors with special form

Sometimes when factoring a number N we already know the remainder of its factors modulo some n. When using older methods, like a simple sieve or Fermat, this clearly speeds up the process n times....
Forum: Msieve 2009-06-15, 12:57
Replies: 10
Views: 886
Posted By RedGolpe
Wonderful. Can you also provide a free access...

Wonderful. Can you also provide a free access link?
Forum: Msieve 2009-06-15, 12:08
Replies: 10
Views: 886
Posted By RedGolpe
For some reason I can't edit my own posts more...

For some reason I can't edit my own posts more than 60 minutes after posting... funny. I moved the table here (http://factors.redgolpe.com/msieve.txt) so to have a complete overview.
Forum: Msieve 2009-06-15, 10:32
Replies: 10
Views: 886
Posted By RedGolpe
I am running some experiments with different...

I am running some experiments with different sized composites and I will post the results here for everyone's benefit.

Input = Approximate size of composite to crack.
Need = Number of relations...
Showing results 1 to 25 of 38

 
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