mersenneforum.org  

Go Back   mersenneforum.org > Great Internet Mersenne Prime Search > Data > Teams

Reply
 
Thread Tools
Old 2008-12-23, 03:31   #78
starrynte
 
starrynte's Avatar
 
Oct 2008
California

3548 Posts
Default

(in the spacecraft example, upgrading is defined as:
new spacecraft is manufactured on earth (analogy of newer computers)
the spacecraft is teleported to as far as where the old spacecraft went (the interim files from the old computer is copied to the new computer)
the new spacecraft continues on the journey (the new computer continues processing the exponent)
)
related to Mini-Geek's last post:
(all completion times based on benchmarks, which may be slightly inaccurate but will do for the purpose)

on a pentium 3 996 MHz, M43112609 will take about 307 days to finish. M20996011 will take about 70 days

on a pentium 4, M43112609 will take about 42 days to finish. M20996011 will take about 10 days to finish.

if you begin on the pentium 3 with M43112609, and later do M20996011 on the pentium 4, it will take a total of 317 days
if you begin with M20996011, however, and then do M43112609 on the pentium 4, it will take a total of 112 days

so, if you are an average person running prime95, you should test exponents suited to your computer. however, if you really do want to test very large exponents, you should start right now, for you can always upgrade your computer, but continue where your old computer left off.
starrynte is offline   Reply With Quote
Old 2008-12-23, 05:43   #79
jinydu
 
jinydu's Avatar
 
Dec 2003
Hopefully Near M48

2·3·293 Posts
Default

I've been posting about this in the "Will Any Current 100M Digit LL Tests Finish?" thread (http://www.mersenneforum.org/showthr...662#post154662). Of course, if you have an unlimited amount of money, it makes sense to start as soon as possible and upgrade whenever new hardware comes out. A more interesting question is what you should do if you have only a finite budget for purchasing new hardware. In that case, you should time your upgrades carefully for maximum effect...

Last fiddled with by jinydu on 2008-12-23 at 05:44
jinydu is offline   Reply With Quote
Old 2008-12-23, 11:03   #80
S485122
 
S485122's Avatar
 
"Jacob"
Sep 2006
Brussels, Belgium

33228 Posts
Default

Quote:
Originally Posted by starrynte View Post
related to Mini-Geek's last post:
(all completion times based on benchmarks, which may be slightly inaccurate but will do for the purpose)

on a pentium 3 996 MHz, M43112609 will take about 307 days to finish. M20996011 will take about 70 days

on a pentium 4, M43112609 will take about 42 days to finish. M20996011 will take about 10 days to finish.

if you begin on the pentium 3 with M43112609, and later do M20996011 on the pentium 4, it will take a total of 317 days
if you begin with M20996011, however, and then do M43112609 on the pentium 4, it will take a total of 112 days
This comparison is not correct : the time untill the PIII is upgraded is not the same (in one case you upgrade after 307 days, in the other after 70 days.) If you upgrade after 190 days you need about 216 days in the 43M followed by 21M case and 215 days in the 21M followed by 43M case ; the differences might be explained by the approximation of the benchmarks. (Benchmarks measure a best itteration time, not an average itteration time, over a few runs the standard deviation might can be as high as 5 %.)
Quote:
Originally Posted by starrynte View Post
so, if you are an average person running prime95, you should test exponents suited to your computer.
I agree with this though.

Jacob
S485122 is offline   Reply With Quote
Old 2009-05-19, 02:41   #81
wreck
 
wreck's Avatar
 
"Bo Chen"
Oct 2005
Wuhan,China

101010102 Posts
Default

Quote:
Originally Posted by StarQwest View Post
For those who are wondering why progress has stopped on M332192831, I have postponed further testing on this number until I get a faster computer. I am running a 2005 PC, which only contains a single Pentium D processor on this test. I will likely get a new computer later this year. To understand my reasoning for this, consider the following:

...

Please understand that I have NOT in any way given up on this test, and plan to resume it in the near future. It is just not practical at the current time, so I will resume testing 10-15 million digit numbers.
It seems like that this exponent has been assigned to another person.

Code:
Exponent Status Data  
332192831 No factors below 2^77 
 Assigned LL testing to "KYOJI_KAMEI" on 2009-05-18 
 History no factor to 2^74 by "George Woltman" on 2008-06-16
wreck is online now   Reply With Quote
Old 2009-05-25, 07:16   #82
GARYP166
 
GARYP166's Avatar
 
Feb 2009

5×7 Posts
Default

The website

www.starqwest.org

also seems not to be available.

Gary
GARYP166 is offline   Reply With Quote
Old 2009-05-25, 17:08   #83
Uncwilly
6809 > 6502
 
Uncwilly's Avatar
 
"""""""""""""""""""
Aug 2003
101×103 Posts

2·32·557 Posts
Default

Confirmed: http://downforeveryoneorjustme.com/www.starqwest.org
Uncwilly is online now   Reply With Quote
Reply

Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
M100,000,039 hourly progress report jinydu LMH > 100M 106 2011-10-09 10:43
Is More Information Better? davar55 Puzzles 3 2009-07-02 20:25
Hourly PrimeNet Reports archived again! delta_t Data 20 2007-10-27 13:20
Do you use the hourly reports? delta_t Data 5 2004-06-09 04:43
Anyone have hourly copies of summary.txt? PrimeCruncher Data 0 2004-05-15 23:32

All times are UTC. The time now is 14:38.


Wed Oct 27 14:38:13 UTC 2021 up 96 days, 9:07, 0 users, load averages: 0.87, 1.12, 1.15

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.