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Search: Posts Made By: joral
Forum: GMP-ECM 2015-02-12, 20:10
Replies: 14
Views: 4,425
Posted By joral
Not exactly sure what the "right number of...

Not exactly sure what the "right number of curves" is, but gmp-ecm on my EVGA GTX970 defaults to 832.


GMP-ECM 7.0-dev [configured with GMP 5.1.3, --enable-asm-redc, --enable-gpu,...
Forum: Factoring 2013-12-03, 14:33
Replies: 37
Views: 6,464
Posted By joral
Why? I mean, I think I could, from the...

Why?

I mean, I think I could, from the discussion so far, and might just to prove to myself I understand the math behind it... But I wouldn't actually report that as a find of that size. Call...
Forum: Factoring 2013-12-02, 19:41
Replies: 37
Views: 6,464
Posted By joral
Would the feelings be slightly different if Bob's...

Would the feelings be slightly different if Bob's speculation came after Ryan posted about it being found with gmp-ecm and posting the log?
Forum: GMP-ECM 2013-08-18, 17:47
Replies: 506
Views: 114,476
Posted By joral
I've found where it is happening on my build (Git...

I've found where it is happening on my build (Git clone of SVN2525), and it makes me wonder how Paul isn't running into the same thing.

SVN2519 added the following at the end of ecm_factor.

...
Forum: Factoring 2013-06-28, 19:09
Replies: 1,829
Views: 167,391
Posted By joral
Rebuilt to clear out a lot of stuff. Paul,...

Rebuilt to clear out a lot of stuff.

Paul, when you get a chance past all of your personal stuff, let me know and we'll get passwords set up again. Server is back up and running though.
Forum: Factoring 2013-06-27, 02:05
Replies: 1,829
Views: 167,391
Posted By joral
Need to yank the server for a bit to clear out a...

Need to yank the server for a bit to clear out a lot of deadwood. Will get it back up ASAP, and will let everyone know when done.
Forum: Factoring 2013-06-20, 00:42
Replies: 1,829
Views: 167,391
Posted By joral
Speaking of which, has anyone seen Paul about...

Speaking of which, has anyone seen Paul about lately?
Forum: Factoring 2013-06-18, 23:16
Replies: 1,829
Views: 167,391
Posted By joral
Should be back up now. Paul normally does the...

Should be back up now. Paul normally does the ecmserver restarts, and I don't have to get involved.
Forum: Factoring 2010-07-28, 13:56
Replies: 1,829
Views: 167,391
Posted By joral
I don't know if anyone noticed, but the server...

I don't know if anyone noticed, but the server was down for a short while (late last night until now) due to my having to reboot to increase system RAM.

I have restarted it.
Forum: Msieve 2010-06-22, 15:43
Replies: 104
Views: 16,886
Posted By joral
In general, I have never seen differences in...

In general, I have never seen differences in performance caused by accessing multiple DIMMs.

Is your code compiled as a 32-bit application? If so, there could be some performance hit with...
Forum: Factoring 2010-05-24, 13:43
Replies: 1,829
Views: 167,391
Posted By joral
Personally, that would be fine with me. I just...

Personally, that would be fine with me. I just looked at the ecmnet download, and I have a silly question. How do you set that up? Or does the server respond to a GET command over it's normal...
Forum: Factoring 2010-05-18, 14:57
Replies: 1,829
Views: 167,391
Posted By joral
What is needed to run the server? I have a...

What is needed to run the server? I have a server out there which isn't doing much, so I could always host it (depending on how much work is involved.)
Forum: Factoring 2010-04-23, 22:54
Replies: 8
Views: 1,776
Posted By joral
No. The sigma value is used to generate a random...

No. The sigma value is used to generate a random curve. There isn't such a thing as an "optimal" sigma. (Except one which gives you a nontrivial factor I guess, but there's no way of knowing if...
Forum: Factoring 2009-08-19, 14:04
Replies: 17
Views: 2,171
Posted By joral
Used to be 1.5GB/core. Now down to 0.5 GB/core.

Used to be 1.5GB/core. Now down to 0.5 GB/core.
Forum: Factoring 2009-08-19, 13:58
Replies: 9
Views: 983
Posted By joral
I need to finish testing it, but I may have a...

I need to finish testing it, but I may have a change to make to the ggnfs code. It would only affect certain pathological cases significantly, but I'm curious how it would affect others. If I find...
Forum: Msieve 2009-08-05, 00:39
Replies: 8
Views: 2,371
Posted By joral
If not, I would recommend getting a CD with...

If not, I would recommend getting a CD with memtest and letting it run for a while. I was having the same problems, and found it was a faulty DIMM. Of course, that has taken my system from 3GB to...
Forum: CADO-NFS 2009-06-06, 22:25
Replies: 522
Sticky: CADO NFS
Views: 80,886
Posted By joral
Finally made it to the sqrt phase, but I'm...

Finally made it to the sqrt phase, but I'm getting this one now when running allsqrt.

Odd valuation! At rational prime 731261

I'm almost tempted to completely trash this run and restart it with...
Forum: CADO-NFS 2009-06-06, 20:52
Replies: 522
Sticky: CADO NFS
Views: 80,886
Posted By joral
So I am now constrained to 1 GB RAM until I can...

So I am now constrained to 1 GB RAM until I can find a reasonable price for DDR DIMMs. But it now works. At least one of the 1GB DIMMS I had were unreliable.
Forum: CADO-NFS 2009-06-05, 18:24
Replies: 522
Sticky: CADO NFS
Views: 80,886
Posted By joral
Hrmm. I wonder if my MB is one which allows me...

Hrmm. I wonder if my MB is one which allows me to control RAM timing. Try stepping it down a touch.

It wasn't just a single bit, but they also weren't evenly spaced.

All of them were...
Forum: CADO-NFS 2009-06-05, 17:40
Replies: 522
Sticky: CADO NFS
Views: 80,886
Posted By joral
Makes me wonder how long this has been going on. ...

Makes me wonder how long this has been going on.

Jason, maybe you can comment on this. Is there a good chance that a single bit error of this type will lead to 'submatrix not invertible' errors...
Forum: CADO-NFS 2009-06-05, 12:37
Replies: 522
Sticky: CADO NFS
Views: 80,886
Posted By joral
Ok... Either I take my computer back to 1GB or I...

Ok... Either I take my computer back to 1GB or I go buy a new memory stick. Ran memtest overnight, and it picked up about 808 bit errors right around the 1.5GB mark in 6 passes through.

Good...
Forum: CADO-NFS 2009-06-05, 00:30
Replies: 522
Sticky: CADO NFS
Views: 80,886
Posted By joral
Haven't been able to get it to build on my dual...

Haven't been able to get it to build on my dual P3-700 yet. Don't want to compare to an athlon64x2 running at about 2Ghz.

I may pull out my ubuntu cd later and run memtest against it to see what...
Forum: CADO-NFS 2009-06-04, 15:40
Replies: 522
Sticky: CADO NFS
Views: 80,886
Posted By joral
Ok. apparently it is random. I've had it fail at...

Ok. apparently it is random. I've had it fail at iteration 100, 1000, 1900, and 19500 (out of 29300).
Forum: CADO-NFS 2009-06-03, 10:56
Replies: 522
Sticky: CADO NFS
Views: 80,886
Posted By joral
I'm going to run some more tests to be sure, but...

I'm going to run some more tests to be sure, but as I recall it is deterministic in this:

If I leave the seed parameter unchanged, it always fails at the same iteration.

It's about a 280 Mb...
Forum: CADO-NFS 2009-06-02, 23:46
Replies: 522
Sticky: CADO NFS
Views: 80,886
Posted By joral
Ok. A little farther. Now I have had the...

Ok. A little farther.

Now I have had the following:

Computing trsp(x)*M^100
..........Warning: Doing many iterations with bad code
Warning: Doing many iterations with bad code
Warning:...
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