[QUOTE=Dubslow;283511]I think 36 of these is closer to two i7's. On a straight clock comparison (I know, that's what nucleon's hesitant about) you'd need around 5 of these to match Intel's quads. I don't think it'll match clock per clock, but even if each ARM clock is 1/3rd of an Intel clock, that's still 15 of these to an i7 (not E series).[/QUOTE]

On a straight clock comparison you'd need around 5 of these to match [B]one core of[/B] Intel's quads. So that's roughly 20 of these. But with a reasonable per-clock expectation of 1/3rd IPC that of i7 (on FLOPs, at least), it'll be more like 60 of them = 1 i7.

Whoops. 60=15*4, so at least we agree otherwise. Thanks.

another link , this time, done by nvidia
[URL]http://www.tomshardware.com/news/nvidia-cuda-arm-9-tegra-3-carma,14335.html[/URL]

[QUOTE=science_man_88;283503]($900/i7 before monitor?) /($25/this) = 1(i7)/36(this) could 36 of this keep up with one i7, my guess is someone's interested.[/QUOTE]

It's not that simple either. As you have way more machines - networking becomes non-trivial.

To use entry level switches (8 ports). You'd need 6x switches for 36 nodes. In a 5 + 1 arrangement. The price I'm looking at here - 24port 10/100/1000 for $165* - you could get by with 2 of those - $330. That's almost $10 per node.

That's still without power supplies and and multi-socket power boards.

It would till be an interesting exercise to do a full TCO. It's borderline whether you'll save on upfront costs - but it sounds like ongoing cost savings is a possibility.

-- Craig
*That's AU pricing.

[QUOTE=nucleon;283632]It's not that simple either. As you have way more machines - networking becomes non-trivial.

To use entry level switches (8 ports). You'd need 6x switches for 36 nodes. In a 5 + 1 arrangement. The price I'm looking at here - 24port 10/100/1000 for $165* - you could get by with 2 of those - $330. That's almost $10 per node.

That's still without power supplies and and multi-socket power boards.

It would till be an interesting exercise to do a full TCO. It's borderline whether you'll save on upfront costs - but it sounds like ongoing cost savings is a possibility.

-- Craig
*That's AU pricing.[/QUOTE]
Shame they don't have wifi. That would solve this problem.

[QUOTE=henryzz;283651]Shame they don't have wifi. That would solve this problem.[/QUOTE]

That would create other problems. 30+ radio sources in a small area, that has to have it's own set of problems.

-- Craig

I want BBC Basic on RISC OS.