mersenneforum.org  

Go Back   mersenneforum.org > Fun Stuff > Lounge

Reply
 
Thread Tools
Old 2013-03-10, 16:17   #1
MattcAnderson
 
MattcAnderson's Avatar
 
"Matthew Anderson"
Dec 2010
Oregon, USA

117910 Posts
Default Prime95 for Ipad request

Hi Mersenne Forum,

I enjoy running Prime95 on several computers. I'm glad that my machines are not just room heaters when I am not using them. It sure would be great if there was a version of Prime95 for the Ipad. My tablet just sits, plugged in, most of the time. I haven't been able to find any distributed computing projects that will run on an Ipad.

Regards,
Matt
MattcAnderson is offline   Reply With Quote
Old 2013-03-10, 17:01   #2
xilman
Bamboozled!
 
xilman's Avatar
 
"๐’‰บ๐’ŒŒ๐’‡ท๐’†ท๐’€ญ"
May 2003
Down not across

26·181 Posts
Default

Quote:
Originally Posted by MattcAnderson View Post
Hi Mersenne Forum,

I enjoy running Prime95 on several computers. I'm glad that my machines are not just room heaters when I am not using them. It sure would be great if there was a version of Prime95 for the Ipad. My tablet just sits, plugged in, most of the time. I haven't been able to find any distributed computing projects that will run on an Ipad.

Regards,
Matt
Now there's a challenge.


I may well see whether ECMNET can be ported to the iPad. If it can, my fee will be 1 months computation.
xilman is offline   Reply With Quote
Old 2013-03-10, 22:11   #3
jasong
 
jasong's Avatar
 
"Jason Goatcher"
Mar 2005

3×7×167 Posts
Default

I have a friend who made prime testing program for an ipod. He said the best one to use was one of the older ones that's only half covered with the screen. Something about the chip being different in the newer ones.

He's been doing badly recently, so I'm not sure if it'd be possible to get the code.

I think a better use of time would be Prime95 code that uses single precision math, specifically for GPUs.

Not that I'm demanding it or anything, since this stuff is volunteer based. I'm just frustrated that nobody's even thought about making single precision code for GPUs.
jasong is offline   Reply With Quote
Old 2013-03-10, 23:33   #4
Dubslow
Basketry That Evening!
 
Dubslow's Avatar
 
"Bunslow the Bold"
Jun 2011
40<A<43 -89<O<-88

3×29×83 Posts
Default

Does the iPad have an x86 processor? If not, there's no hope of anyone porting many thousands of lines of assembly to ARM (which is what the iPad runs).

Also even if you gave it all the power it needed, it would probably still overheat running Prime95 all the time.
Dubslow is offline   Reply With Quote
Old 2013-03-10, 23:43   #5
swl551
 
swl551's Avatar
 
Aug 2012
New Hampshire

23×101 Posts
Default

Quote:
Originally Posted by Dubslow View Post
Does the iPad have an x86 processor? If not, there's no hope of anyone porting many thousands of lines of assembly to ARM (which is what the iPad runs).

Also even if you gave it all the power it needed, it would probably still overheat running Prime95 all the time.
Custom designed ARM processor. Intel Atom processors unlikely to crack that market anytime soon.
swl551 is offline   Reply With Quote
Old 2013-03-11, 04:48   #6
LaurV
Romulan Interpreter
 
LaurV's Avatar
 
"name field"
Jun 2011
Thailand

2×47×109 Posts
Default

There is already an Android toy on the forum (search) which I downloaded and tried on my daughter's Galaxy S II (that is because I still have an antediluvian phone), but the performance is lousy. I implemented myself an XScale version of LL test using karatsuba multiplication, but again, the performance is totally lousy (we use hundreds of this thingies, which we also manufacture for the customer, then we buy back part of them, as it is not our design, and we use them in one line of our products, so one weekend I had nothing to do and I made a multi-byte integer/array multiplication for XScale, based on karatsuba algorithm, I am not yet daring to put my nose into FFT or floating point doubles). For some terminal which is 24/7 connected to a powered-on machine it would make sense, but who the hell buys ipads to keep them plugged 24/7 into the wall?
LaurV is offline   Reply With Quote
Old 2013-03-11, 09:02   #7
sonjohan
 
sonjohan's Avatar
 
May 2003
Belgium

23×5×7 Posts
Default

A new form of art: iPad's making LL-tests on the wall.
Changes from just a silly painting.
sonjohan is offline   Reply With Quote
Old 2013-03-11, 10:03   #8
fivemack
(loop (#_fork))
 
fivemack's Avatar
 
Feb 2006
Cambridge, England

193616 Posts
Default

Quote:
Originally Posted by xilman View Post
Now there's a challenge.


I may well see whether ECMNET can be ported to the iPad. If it can, my fee will be 1 months computation.
I was amazed how easily libgmp and gmp-ecm cross-built to ARMv7; I've been doing ECM on my odroid-x for a month or so now. It's not a great ECM platform, it's about ten times slower than Westmere (half the clock, lack of 64x64->128).
fivemack is offline   Reply With Quote
Old 2013-03-11, 10:06   #9
fivemack
(loop (#_fork))
 
fivemack's Avatar
 
Feb 2006
Cambridge, England

193616 Posts
Default

Quote:
Originally Posted by LaurV View Post
I was amused that the touch-screen for check-in at the last hotel I went to was clearly an iPad1 in a box bolted to the wall; I'm slightly surprised there's still much of a market for custom wall-mount touchscreens given the scale at which Foxconn turns out ipads.
fivemack is offline   Reply With Quote
Old 2013-03-11, 11:01   #10
LaurV
Romulan Interpreter
 
LaurV's Avatar
 
"name field"
Jun 2011
Thailand

101000000001102 Posts
Default

You can't use ipads and this kind of crap - I mean seriously when I say "crap" - for industrial lines (like, +50 degrees Celsius, continuous vibrations, etc). Technically, our toys are functional identical with iPads, but more robust and more expensive. The same processor is used on a full line of Gigabyte's G-Smart phones (like i-320, etc). Beside of the fact that capacitive touch screens are completely futile when the guy put his wet and oily finger on it, but think to automatic bobbin winders for industrial looms, for example. They are winding a hundred of reels in the same time, with such a speed, that if one (a single one!) thread is broken, and this goes undetected, in just few seconds all the industrial hall is full of small cotton lint flocks, it looks like heavily snowing. No joke! This toy for example, the touch screen you see there on the left has our toy inside. Some of them goes into military things too, but I can't provide links... (edit, forgot to say that I do all the software for those things )

Last fiddled with by LaurV on 2013-03-11 at 11:03
LaurV is offline   Reply With Quote
Reply

Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
Prime95 version 29.1 benchmarking -- request for comments Prime95 PrimeNet 8 2020-01-11 22:27
โŒ˜-A on iPad? Flatlander Forum Feedback 16 2013-02-22 14:12
iPad R. Gerbicz Hardware 6 2010-01-28 21:24
Feature request: Prime95 priority higher than 10 JuanTutors Software 19 2006-10-29 04:09
Request Help - Prime95 Failure draxen Software 4 2005-04-05 16:41

All times are UTC. The time now is 09:49.


Wed Dec 7 09:49:29 UTC 2022 up 111 days, 7:18, 0 users, load averages: 0.94, 0.97, 0.89

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2022, 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.

โ‰  ยฑ โˆ“ รท ร— ยท โˆ’ โˆš โ€ฐ โŠ— โŠ• โŠ– โŠ˜ โŠ™ โ‰ค โ‰ฅ โ‰ฆ โ‰ง โ‰จ โ‰ฉ โ‰บ โ‰ป โ‰ผ โ‰ฝ โŠ โŠ โŠ‘ โŠ’ ยฒ ยณ ยฐ
โˆ  โˆŸ ยฐ โ‰… ~ โ€– โŸ‚ โซ›
โ‰ก โ‰œ โ‰ˆ โˆ โˆž โ‰ช โ‰ซ โŒŠโŒ‹ โŒˆโŒ‰ โˆ˜ โˆ โˆ โˆ‘ โˆง โˆจ โˆฉ โˆช โจ€ โŠ• โŠ— ๐–• ๐–– ๐–— โŠฒ โŠณ
โˆ… โˆ– โˆ โ†ฆ โ†ฃ โˆฉ โˆช โŠ† โŠ‚ โŠ„ โŠŠ โŠ‡ โŠƒ โŠ… โŠ‹ โŠ– โˆˆ โˆ‰ โˆ‹ โˆŒ โ„• โ„ค โ„š โ„ โ„‚ โ„ต โ„ถ โ„ท โ„ธ ๐“Ÿ
ยฌ โˆจ โˆง โŠ• โ†’ โ† โ‡’ โ‡ โ‡” โˆ€ โˆƒ โˆ„ โˆด โˆต โŠค โŠฅ โŠข โŠจ โซค โŠฃ โ€ฆ โ‹ฏ โ‹ฎ โ‹ฐ โ‹ฑ
โˆซ โˆฌ โˆญ โˆฎ โˆฏ โˆฐ โˆ‡ โˆ† ฮด โˆ‚ โ„ฑ โ„’ โ„“
๐›ข๐›ผ ๐›ฃ๐›ฝ ๐›ค๐›พ ๐›ฅ๐›ฟ ๐›ฆ๐œ€๐œ– ๐›ง๐œ ๐›จ๐œ‚ ๐›ฉ๐œƒ๐œ— ๐›ช๐œ„ ๐›ซ๐œ… ๐›ฌ๐œ† ๐›ญ๐œ‡ ๐›ฎ๐œˆ ๐›ฏ๐œ‰ ๐›ฐ๐œŠ ๐›ฑ๐œ‹ ๐›ฒ๐œŒ ๐›ด๐œŽ๐œ ๐›ต๐œ ๐›ถ๐œ ๐›ท๐œ™๐œ‘ ๐›ธ๐œ’ ๐›น๐œ“ ๐›บ๐œ”