mersenneforum.org  

Go Back   mersenneforum.org > Search Forums

Showing results 1 to 21 of 21
Search took 0.01 seconds.
Search: Posts Made By: paulunderwood
Forum: 3*2^n-1 Search 2008-06-26, 15:56
Replies: 51
DWT
Views: 21,939
Posted By paulunderwood
Here is another program written by Thomas for...

Here is another program written by Thomas for optimization of project throughput, for wide ranges of "n" crossing FFT jumps. :smile:
Forum: 3*2^n-1 Search 2008-06-26, 14:17
Replies: 51
DWT
Views: 21,939
Posted By paulunderwood
By request and by curtesy of Thomas here is the...

By request and by curtesy of Thomas here is the program to create tables such as above.
Forum: 3*2^n-1 Search 2008-06-16, 17:32
Replies: 51
DWT
Views: 21,939
Posted By paulunderwood
IBDWT break points for 5M < n < 20M+

Thanks to Thomas for this info:

here are the FFT lengths and break points for k=3, n=5-20M:

For P4 and other SSE2 cpus:

fftlen nmax
-----------------------
327680 ...
Forum: 3*2^n-1 Search 2005-10-09, 00:28
Replies: 51
DWT
Views: 21,939
Posted By paulunderwood
Some more timings on Linux with no X: Athlon...

Some more timings on Linux with no X:

Athlon 1050MHz
13.014 ms/iteration llr362
13.028 ms/iteration llr35
...new LLR slightly faster (0.1%)

Athlon XP1600+
9.432 ms/iteration llr362
9.401...
Forum: 3*2^n-1 Search 2005-10-08, 23:52
Replies: 51
DWT
Views: 21,939
Posted By paulunderwood
I have timed "llr35" and "llr362" on an Athlon...

I have timed "llr35" and "llr362" on an Athlon (Debian+X) and calculated that the old LLR is 0.4% quicker:

7.912 ms/iteration llr362
7.880 ms/iteration llr35

:confused:
Forum: 3*2^n-1 Search 2005-10-07, 15:15
Replies: 51
DWT
Views: 21,939
Posted By paulunderwood
Thomas informs me that the FFT boundaries have...

Thomas informs me that the FFT boundaries have changed recently with the latest LLRs for Athlons:

Here are the latest Athlon FFT lengths for k=3:

fftlen nmax
-----------------------...
Forum: 3*2^n-1 Search 2005-03-22, 17:22
Replies: 51
DWT
Views: 21,939
Posted By paulunderwood
Thomas Ritschel pointed out to me that the FFT...

Thomas Ritschel pointed out to me that the FFT size change occurs at different "n" for Athlons than P4s. When we get to the difference in a couple of months it makes sense to have "Athlon only 321...
Forum: 3*2^n-1 Search 2004-09-05, 08:56
Replies: 51
DWT
Views: 21,939
Posted By paulunderwood
timings

Thomas Ritschel sent me some LLR timings for 321search on his AMD Opteron computer . These show where the FFT sizes change. This is where we notice a slow down in iteration timings and the LLR tests...
Forum: 3*2^n-1 Search 2004-08-02, 18:10
Replies: 51
DWT
Views: 21,939
Posted By paulunderwood
Latest binaries can be found by following the...

Latest binaries can be found by following the links here (http://groups.yahoo.com/group/primenumbers/message/15184)

Happy hunting :devil:
Forum: 3*2^n-1 Search 2004-08-02, 13:09
Replies: 51
DWT
Views: 21,939
Posted By paulunderwood
Wait a little more and we will see "llr3" (or...

Wait a little more and we will see "llr3" (or whatever it will be called) which is 30% faster than llr2 because it is based on George's latest IBDWT library. :shock:
Forum: 3*2^n-1 Search 2004-08-01, 22:24
Replies: 51
DWT
Views: 21,939
Posted By paulunderwood
Jean Penne is about make available the very...

Jean Penne is about make available the very latest LLR ( based on George Woltman's latest IBDWT library?) see here (http://groups.yahoo.com/group/primenumbers/message/15182) Also keep a look over...
Forum: 3*2^n-1 Search 2004-04-12, 11:37
Replies: 51
DWT
Views: 21,939
Posted By paulunderwood
Thanks for the link William. I am still...

Thanks for the link William.

I am still having problems with "stop/continue" and starting LLR if a "save file" exists. A save file is created when you shutdown Windoze. I get around the problem by...
Forum: 3*2^n-1 Search 2004-03-27, 12:49
Replies: 51
DWT
Views: 21,939
Posted By paulunderwood
I wonder if Jean meant less than 256 which is 2^8...

I wonder if Jean meant less than 256 which is 2^8 ... :unsure:
Forum: 3*2^n-1 Search 2004-03-27, 12:24
Replies: 51
DWT
Views: 21,939
Posted By paulunderwood
Jean wrote Yahoo! primenumbers: So it...

Jean wrote Yahoo! primenumbers:



So it is very small k <=31 on a SSE2 P4 that get's the maximum boost of about 400%
Forum: 3*2^n-1 Search 2004-03-25, 20:57
Replies: 51
DWT
Views: 21,939
Posted By paulunderwood
Book it and grab it here...

Book it and grab it here (http://www.mersenneforum.org/showthread.php?t=1545)
Forum: 3*2^n-1 Search 2004-03-25, 18:02
Replies: 51
DWT
Views: 21,939
Posted By paulunderwood
The source is not available as far as I know. We...

The source is not available as far as I know. We will have to wait for Jean to return from his hols to fix the problems we have found. I suggest you test numbers at n=860k+ -- I did not have any...
Forum: 3*2^n-1 Search 2004-03-25, 15:23
Replies: 51
DWT
Views: 21,939
Posted By paulunderwood
The "+016" should be 3*2^831198-1 -- another...

The "+016" should be 3*2^831198-1 -- another problem for Jean to resolve :surprised I will see if it happens here...
Forum: 3*2^n-1 Search 2004-03-25, 02:41
Replies: 51
DWT
Views: 21,939
Posted By paulunderwood
I was testing some numbers at n=860k and there...

I was testing some numbers at n=860k and there seemed to be no problem but with the n=792k batch I am now testing there is the problem you mentioned. Perhaps we should test numbers that are larger...
Forum: 3*2^n-1 Search 2004-03-24, 11:49
Replies: 51
DWT
Views: 21,939
Posted By paulunderwood
I have asked xyzzy to host it at primerib -- this...

I have asked xyzzy to host it at primerib -- this will happen soon!

The gimps directory should also contain it soon!
Forum: 3*2^n-1 Search 2004-03-21, 20:20
Replies: 51
DWT
Views: 21,939
Posted By paulunderwood
Me too :smile: :smile: :smile: To JP: ...

Me too :smile: :smile: :smile:

To JP: :bow:
Forum: 3*2^n-1 Search 2003-05-31, 03:38
Replies: 51
DWT
Views: 21,939
Posted By paulunderwood
DWT

I found this:

http://groups.yahoo.com/group/primenumbers/message/7510

How long before an implementation :question:
Showing results 1 to 21 of 21

 
All times are UTC. The time now is 13:51.


Thu Dec 9 13:51:52 UTC 2021 up 139 days, 8:20, 0 users, load averages: 1.09, 1.46, 1.45

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2021, Jelsoft Enterprises Ltd.

This forum has received and complied with 0 (zero) government requests for information.

Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation.
A copy of the license is included in the FAQ.