mersenneforum.org  

Go Back   mersenneforum.org > Fun Stuff > Lounge

Reply
 
Thread Tools
Old 2006-11-03, 06:26   #1
jinydu
 
jinydu's Avatar
 
Dec 2003
Hopefully Near M48

110110111102 Posts
Default GIMPS Credit for Exponents Between 79.3 Million and 596 Million

Given that the LL tests for M100,000,007 are scheduled to finish next month, I am curious as to how GIMPS credit will be assigned for exponents from 79.3 million to 596 million.

It would nice if Mr. Woltman could reply here for everyone to see.

Thanks

Last fiddled with by jinydu on 2006-11-03 at 06:27
jinydu is offline   Reply With Quote
Old 2006-11-03, 14:15   #2
Uncwilly
6809 > 6502
 
Uncwilly's Avatar
 
"""""""""""""""""""
Aug 2003
101×103 Posts

27×61 Posts
Default

Like other exponents being worked on by LMH'ers there is likely to be no credit.
Uncwilly is offline   Reply With Quote
Old 2006-11-03, 23:35   #3
jinydu
 
jinydu's Avatar
 
Dec 2003
Hopefully Near M48

175810 Posts
Default

That would be unfortunate... Could Mr. Woltman confirm this please?
jinydu is offline   Reply With Quote
Old 2006-11-03, 23:50   #4
gribozavr
 
gribozavr's Avatar
 
Mar 2005
Internet; Ukraine, Kiev

11·37 Posts
Default

In 100MDPP I keep my private version of stats. But, as I'm the only active contributor, those stats are rather boring.
gribozavr is offline   Reply With Quote
Old 2006-11-04, 02:12   #5
cheesehead
 
cheesehead's Avatar
 
"Richard B. Woods"
Aug 2002
Wisconsin USA

769210 Posts
Default

IMO credit can and will be given eventually if the records of contributions have sufficient information, such as identities of contributors, along with the amounts of work accomplished in a form that can be converted to CPU-years.
cheesehead is offline   Reply With Quote
Old 2006-11-04, 18:30   #6
jinydu
 
jinydu's Avatar
 
Dec 2003
Hopefully Near M48

2·3·293 Posts
Default

Quote:
Originally Posted by cheesehead View Post
IMO credit can and will be given eventually if the records of contributions have sufficient information, such as identities of contributors, along with the amounts of work accomplished in a form that can be converted to CPU-years.
Care to speculate on a formula for how credit will be given?
jinydu is offline   Reply With Quote
Old 2006-11-04, 18:36   #7
gribozavr
 
gribozavr's Avatar
 
Mar 2005
Internet; Ukraine, Kiev

40710 Posts
Default

jinydu, some time ago I was thinking about the problem. My solution was
http://mersenneforum.org/showpost.ph...&postcount=284
gribozavr is offline   Reply With Quote
Old 2006-11-06, 13:01   #8
cheesehead
 
cheesehead's Avatar
 
"Richard B. Woods"
Aug 2002
Wisconsin USA

11110000011002 Posts
Default

Quote:
Originally Posted by jinydu
Care to speculate on a formula for how credit will be given?
For L-L, just use the current formula with the higher exponents:

(Exponent-2) * (iteration time for the FFT length), where "iteration time" is in units of P90-CPU-years,

or

(Exponent-2) * (iteration time for the FFT length) / (number of seconds in a year),
where "iteration time" is in seconds on a P90,

For trial factoring:
Quote:
Originally Posted by gribozavr View Post
jinydu, some time ago I was thinking about the problem. My solution was
http://mersenneforum.org/showpost.ph...&postcount=284
Of course there has to be a multiplier/divider to convert the TF "points" (exponent 332,192,831 = 1 point) in that thread to CPU-years.

Last fiddled with by cheesehead on 2006-11-06 at 13:03
cheesehead is offline   Reply With Quote
Old 2006-11-06, 19:00   #9
gribozavr
 
gribozavr's Avatar
 
Mar 2005
Internet; Ukraine, Kiev

11×37 Posts
Default

But are CPU years comparable? For example, TF > 64bits with mfactor on 32-bit 3.0 Ghz Pentium4 would be much slower than on Athlon64 1.8Ghz. But LL would be faster on P4 AFAIK.

Last fiddled with by gribozavr on 2006-11-06 at 19:01
gribozavr is offline   Reply With Quote
Old 2006-11-06, 19:34   #10
cheesehead
 
cheesehead's Avatar
 
"Richard B. Woods"
Aug 2002
Wisconsin USA

22×3×641 Posts
Default

We already have that problem now; it doesn't start just at 79.3M.
cheesehead is offline   Reply With Quote
Old 2006-11-07, 01:30   #11
jinydu
 
jinydu's Avatar
 
Dec 2003
Hopefully Near M48

2·3·293 Posts
Default

Quote:
Originally Posted by cheesehead View Post
For L-L, just use the current formula with the higher exponents:

(Exponent-2) * (iteration time for the FFT length), where "iteration time" is in units of P90-CPU-years,

or

(Exponent-2) * (iteration time for the FFT length) / (number of seconds in a year),
where "iteration time" is in seconds on a P90,
So in other words, I would need to have a P90 in order to find the iteration times, not to mention the fact that I don't know what the FFT length is for exponents larger than 79.3 million...
jinydu is offline   Reply With Quote
Reply

Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
GIMPS now in 10 million digit territory E_tron Lounge 55 2007-11-27 15:31
Day Million jasong Puzzles 15 2007-08-25 03:01
76 million to 76.5 million to 2^63 DJones Lone Mersenne Hunters 5 2007-03-31 19:06
Exponents < 2 Million wackyeh Lone Mersenne Hunters 7 2003-07-16 18:42
2.2 million? Prime95 PSearch 4 2003-02-22 08:42

All times are UTC. The time now is 07:16.

Fri Apr 10 07:16:03 UTC 2020 up 16 days, 4:49, 1 user, load averages: 2.45, 2.63, 2.58

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.