mersenneforum.org  

Go Back   mersenneforum.org > Other Stuff > Archived Projects > Prime Cullen Prime

 
 
Thread Tools
Old 2007-03-30, 17:53   #34
ET_
Banned
 
ET_'s Avatar
 
"Luigi"
Aug 2002
Team Italia

475110 Posts
Default

Quote:
Originally Posted by geoff View Post
It may be possible to compile with cygwin-gcc 4.1, but I don't have a cross-compiler, it needs to be done from Windows.
I have an AMD X2 with Windows, Cygwin and GCC 3.4, and I'm already involved into this project working on P-1 and planning to do sieving work. If it helps I may try and compile with my environment, just let me know.

HHH received my request to join the mailing-list but I got no clue on executables.

Luigi
ET_ is offline  
Old 2007-03-31, 01:35   #35
Citrix
 
Citrix's Avatar
 
Jun 2003

101111001012 Posts
Default

It is the .zip file in the file section of the yahoo groups. I need to modify it a little bit before final release. Just been lazy, need some incentive....

Last fiddled with by Citrix on 2007-03-31 at 01:36
Citrix is offline  
Old 2007-04-01, 03:35   #36
geoff
 
geoff's Avatar
 
Mar 2003
New Zealand

115710 Posts
Default

Quote:
Originally Posted by Citrix View Post
I get 62kps with your program on a 2.63 Ghz Intel celeron. What is wrong with the computer?
Is your machine a Northwood or Prescott based Celeron?

For gcwsieve version 1.0.2 on the 4825 term sieve file, at p=150e9:

Compiled with GCC 4.1.2 and run on my 2.88GHz Northwood (128Kb L2) Celeron under Linux I get 89kp/s, but compiled with GCC 3.4.5 on a 2.80GHz Celeron D (256Kb L2) under Windows XP I get 63kp/s.

If I compile with GCC 3.4.6 on Linux I still get 85kp/s on the Northwood Celeron, so I think most of the difference is due to the SSE2 assembler not being well tuned for Prescott, rather than differences between GCC 3.4 and 4.1.

(My P3/800 now gets 72kp/s, 4 times faster per clock than the Celeron D).
geoff is offline  
Old 2007-04-05, 01:18   #37
Citrix
 
Citrix's Avatar
 
Jun 2003

3·503 Posts
Default

40% faster modified multisieve released.
Please update.
File still restricted to the yahoo groups forum.
Version 1.1.
Please provide stats, feedback and any bugs you notice.
Thx


Citrix is offline  
Old 2007-04-08, 14:05   #38
em99010pepe
 
em99010pepe's Avatar
 
Sep 2004

2×5×283 Posts
Default

I get 310 kp/s with gswsieve 1.0.4 on an AMD 64 3000+.

Carlos
em99010pepe is offline  
Old 2007-04-09, 20:44   #39
em99010pepe
 
em99010pepe's Avatar
 
Sep 2004

54168 Posts
Default

I get 186 kp/s with gswsieve 1.0.4 on an AMD 2200+
em99010pepe is offline  
Old 2007-04-14, 21:33   #40
hhh
 
hhh's Avatar
 
Jun 2005

5658 Posts
Default

Can we bring into line the output formats of the sievers? (If there are no other (technical?)objections). Would be cool. Yours H.
hhh is offline  
Old 2007-04-16, 01:27   #41
geoff
 
geoff's Avatar
 
Mar 2003
New Zealand

13·89 Posts
Default

Quote:
Originally Posted by hhh View Post
Can we bring into line the output formats of the sievers? (If there are no other (technical?)objections). Would be cool. Yours H.
the `--multisieve' switch will make gcwsieve write the factors and ABC files in the same format as MultiSieve.
geoff is offline  
Old 2007-04-19, 22:06   #42
Citrix
 
Citrix's Avatar
 
Jun 2003

150910 Posts
Default

I think everyone should to switch to gcwsieve now. I do not plan to update multisieve anymore (unless there is a use for it), it seems fruitless right now to improve on it.


Last fiddled with by Citrix on 2007-04-19 at 22:07
Citrix is offline  
Old 2007-04-21, 08:34   #43
em99010pepe
 
em99010pepe's Avatar
 
Sep 2004

2×5×283 Posts
Default

We will reach 2T on sieving by the end of the month. I thought we would take longer to get it.

Carlos
em99010pepe is offline  
Old 2007-04-21, 09:17   #44
hhh
 
hhh's Avatar
 
Jun 2005

373 Posts
Default

Me too. What is your factor/time ratio now? Do you still get a factor per day? How fast would your computers be in LLR?
In other words: how many times sieving is still more efficient than LLR?

I' make the update this afternoon, I think. Anyways, the speed increase will be less than 5%, I think. H.
hhh is offline  
 

Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
SIEVE GAP pepi37 Other Mathematical Topics 2 2016-03-19 06:55
Advantage of lattice sieve over line sieve binu Factoring 3 2013-04-13 16:32
Combined Sieve Guide Discussion Joe O Prime Sierpinski Project 35 2006-09-01 13:44
Sieve discussion Meaning of first/second pass, combined Citrix Prime Sierpinski Project 14 2005-12-31 19:39
New Sieve Thread Discussion Citrix Prime Sierpinski Project 15 2005-08-29 13:56

All times are UTC. The time now is 10:30.

Thu Apr 9 10:30:13 UTC 2020 up 15 days, 8:03, 1 user, load averages: 1.80, 1.44, 1.33

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2020, 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.