Re: Rasberry pi - high density

[Michael Thomas <mike () mtcc com>]

As it turns out, I've been playing around benchmarking things lately 
using the tried and true
UnixBench suite and here are a few numbers that might put this in some 
perspective:

1) My new Rapsberry pi (4 cores, arm): 406
2) My home i5-like thing (asus 4 cores, 16gb's from last year): 3857
3) AWS c4.xlarge (4 cores, ~8gb's): 3666

So you'd need to, uh, wedge about 10 pi's to get one half way modern x86.

Mike

On 5/11/15 1:37 PM, Clay Fiske wrote:
> > On May 8, 2015, at 10:24 PM, charles () thefnf org wrote:
> >
> > Pi dimensions:
> >
> > 3.37 l (5 front to back)
> > 2.21 w (6 wide)
> > 0.83 h
> > 25 per U (rounding down for Ethernet cable space etc) = 825 pi
> >
> > Cable management and heat would probably kill this before it ever reached completion, but lol…
>
> This feels like it should be a Friday thread. :)
>
> If you’re really going for density:
>
> - At 0.83 inches high you could go 2x per U (depends on your mounting system and how much space it burns)
> - I’d expect you could get at least 7 wide if not 8 with the right micro-USB power connector
> - In most datacenter racks I’ve seen you could get at least 8 deep even with cable breathing room
>
> So somewhere between 7x8x2 = 112 and 8x8x2 = 128 per U. And if you get truly creative about how you stack them you 
> could probably beat that without too much effort.
>
> This doesn’t solve for cooling, but I think even at these numbers you could probably make it work with nice, tight 
> cabling.
>
>
> -c