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Search: Posts Made By: Thomas11
Forum: Riesel Prime Search 2020-07-19, 14:34
Replies: 27
Views: 17,222
Posted By Thomas11
The tool doesn't check for algebraic factors......

The tool doesn't check for algebraic factors... :no:
Forum: Riesel Prime Search 2016-01-04, 12:43
Replies: 27
Views: 17,222
Posted By Thomas11
Here comes the new version of MNash with the...

Here comes the new version of MNash with the print filtering feature added.

Usage example:
MNash.exe -1 -100 2 2 800

The additional parameter (800) controls the printing, e.g. the result line...
Forum: Riesel Prime Search 2015-12-25, 09:55
Replies: 27
Views: 17,222
Posted By Thomas11
I will add this feature when I'm back from...

I will add this feature when I'm back from Christmas vacations (don't have a real computer with me)...
Forum: Riesel Prime Search 2015-07-06, 08:15
Replies: 27
Views: 17,222
Posted By Thomas11
I did some minor improvements to the "mnash"...

I did some minor improvements to the "mnash" tool:

(1) The earlier version was restricted to k<2^31, the new one can handle k of arbitrary size.

(2) The values "kmin" and "kmax" now have the...
Forum: Riesel Prime Search 2015-07-03, 12:17
Replies: 27
Views: 17,222
Posted By Thomas11
I prepared a new version of mnash which is now...

I prepared a new version of mnash which is now also capable for bases other than b=2.
For convenience the attached ZIP file also contains the latest single k universal base nash.exe.

A positive k...
Forum: Riesel Prime Search 2015-07-03, 11:02
Replies: 27
Views: 17,222
Posted By Thomas11
It seems that you mixed up those values: The...

It seems that you mixed up those values:

The old Nash tool as given here in this thread was specifically created for k*2^n-1 and will yield:
nash 93 --> 93 3116 3123
But this is the Nash...
Forum: Riesel Prime Search 2009-05-11, 13:21
Replies: 27
Views: 17,222
Posted By Thomas11
I wouldn't expect any increase in speed since the...

I wouldn't expect any increase in speed since the (current) code will not benefit from a 64 bit architecture (e.g. 64 bit registers). The program was written to fit just into the limitations (e.g....
Forum: Riesel Prime Search 2007-02-28, 14:39
Replies: 27
Views: 17,222
Posted By Thomas11
P3/Athlon binaries for Windows

I created a new set of Windows binaries by using a different precompiled GMP library from: http://cs.nyu.edu/exact/core/gmp/

The file contains nash.exe and mnash.exe. They are tested on an...
Forum: Riesel Prime Search 2007-02-28, 10:09
Replies: 27
Views: 17,222
Posted By Thomas11
I used the following (german) link: ...

I used the following (german) link:
http://www.bempf.de/c/gmp/gmp.html

But probably in your case the problem is, that the library is precompiled for SSE2 machines, but your Athlon doesn't have...
Forum: Riesel Prime Search 2007-02-27, 19:42
Replies: 27
Views: 17,222
Posted By Thomas11
I forgot to mention: For nash and mnash I used...

I forgot to mention:
For nash and mnash I used a precompiled static GMP library. I haven't tested the binaries on a Windows machine without the GMP lib so far, nor have I tested them on a non-P4...
Forum: Riesel Prime Search 2007-02-27, 19:33
Replies: 27
Views: 17,222
Posted By Thomas11
The final one is a bit different. Since the...

The final one is a bit different.
Since the Nash algorithm is quite slow when computing large ranges (e.g. millions) of k, one needs a faster tool. Therefore I implemented an ordinary sieve for p...
Forum: Riesel Prime Search 2007-02-27, 19:09
Replies: 27
Views: 17,222
Posted By Thomas11
The next one is a multiple-k Nash calculator. ...

The next one is a multiple-k Nash calculator. Note that the current version is restricted to k<2^64 (e.g unsigned long)

Usage is:
mnash <kmin> <kmax> <kstep>
for example:
mnash 1 10 2
...
Forum: Riesel Prime Search 2007-02-27, 19:04
Replies: 27
Views: 17,222
Posted By Thomas11
some tools for weights computing...

I was asked about the tools I'm using to compute the Nash weights for the larger k.
Since there might be some general interest, I'm uploading them into this thread, in hope that you find them...
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