mersenneforum.org  

Go Back   mersenneforum.org > Other Stuff > Open Projects > y-cruncher

Reply
 
Thread Tools
Old 2020-11-20, 07:01   #34
ATH
Einyen
 
ATH's Avatar
 
Dec 2003
Denmark

56518 Posts
Default

Quote:
Originally Posted by Dr Sardonicus View Post
Hmm, rings a bell.
That girl has problems, bein' heard ain't one of 'em .
-- Ethel Merman, referring to Janis Joplin
He was probably refering to:
Got 99 problems and a bitch ain't one
- Ice-T 1993
ATH is offline   Reply With Quote
Old 2020-12-03, 15:52   #35
mackerel
 
mackerel's Avatar
 
Feb 2016
UK

22×32×11 Posts
Default

Quote:
Originally Posted by storm5510 View Post
Y-Cruncher seems to prefer vast amounts of swap/storage space on drives over lot of RAM.
Only just saw this, forgot this forum was here. Y-cruncher would love as much ram as is needed, but in reality no consumer attainable system can possibly have enough ram for the bigger runs. We're talking well into the TB that not even high end servers can reach. And that's putting aside the cost of that much ram even if you could put it in a single system. So the practicality of it is, you have to use some form of swap as a less insane cost substitute, and that is where the optimisation needs to go.
mackerel is online now   Reply With Quote
Old 2020-12-03, 15:57   #36
Xyzzy
 
Xyzzy's Avatar
 
"Mike"
Aug 2002

3×43×61 Posts
Default

To prove that you computed x digits of pi, couldn't you store only a checksum of all of the digits and keep the last digit "for fun"?

Xyzzy is offline   Reply With Quote
Old 2020-12-03, 16:32   #37
xilman
Bamboozled!
 
xilman's Avatar
 
"π’‰Ίπ’ŒŒπ’‡·π’†·π’€­"
May 2003
Down not across

2×3×1,733 Posts
Default

Quote:
Originally Posted by Xyzzy View Post
To prove that you computed x digits of pi, couldn't you store only a checksum of all of the digits and keep the last digit "for fun"?

Don't see why not. Computing the last digit is much cheaper than computing them all.
xilman is online now   Reply With Quote
Reply

Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
Google Cloud Compute 31.4 Trillion Digits of Pi Mysticial y-cruncher 30 2019-10-11 14:45
How many digits? kokakola Information & Answers 23 2009-11-03 05:08
15M Digits - Just For Fun storm5510 Math 7 2009-09-08 04:14
All 10 Digits davar55 Puzzles 5 2007-06-18 15:06
140+ digits which is better marthamm GMP-ECM 4 2006-01-25 17:32

All times are UTC. The time now is 17:23.

Fri Dec 4 17:23:57 UTC 2020 up 1 day, 13:35, 0 users, load averages: 1.48, 1.72, 1.57

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.