Go Back > Prime Search Projects > Prime Sierpinski Project

Thread Tools
Old 2006-04-06, 08:44   #1
hhh's Avatar
Jun 2005

22×3×31 Posts
Default HT and all kind of other optimisation thread

This thread is ment to gather and provide information on how to make the best use of every kind of computer system.

I just enabled Hyperthreading on my P4 3.0GHz, on Linux and did some tests. Here my numbers. (192K FFT, 100T)
LLR3.6 alone _6.413 ms/bit
LLR/sieve____12.831 ms/bit___ 179kp/s
sieve alone_________________179 kp/s
2 x llr_____12.907 ms/bit (x2)
2 x sieve____________________180 kp/s (x2)

That means that the sieve client takes the best advantage of HT, giving the P4 a not that bad sieve performance, IMO. In fact, when you run a sieve client, running something else is free.
The LLR client (Primality testing) does not take any advantage of two instances.

Does this fit with your experiences? What about AMD? And many other possible questions.

Last fiddled with by hhh on 2006-04-06 at 08:53
hhh is offline   Reply With Quote
Old 2006-04-06, 08:52   #2
Citrix's Avatar
Jun 2003

32·52·7 Posts
Citrix is offline   Reply With Quote
Old 2006-04-06, 09:33   #3
hhh's Avatar
Jun 2005

22×3×31 Posts

Originally Posted by Citrix
This URL seem to me just to consider prime95, but neither the LLR-client nor sieving (at least these word don't show up). H.
hhh is offline   Reply With Quote

Thread Tools

Similar Threads
Thread Thread Starter Forum Replies Last Post
Data Centre Energy Consumption Optimisation pinhodecarlos Lounge 15 2019-03-15 14:19
A Different Kind of a Computer a1call Miscellaneous Math 3 2017-06-29 11:15
CRT optimisation? mickfrancis Math 9 2016-03-30 10:20
An opportunity for search engine optimisation fivemack Aliquot Sequences 6 2015-11-17 20:31
Basic optimisation question fivemack Puzzles 6 2008-04-08 13:50

All times are UTC. The time now is 23:24.

Thu Oct 29 23:24:03 UTC 2020 up 49 days, 20:35, 1 user, load averages: 1.95, 1.91, 2.07

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.