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Raspberry Pi Supercomputer

Posted: Thu Nov 01, 2012 2:41 pm
by Sabre
http://www.youtube.com/watch?v=Jq5nrHz9I94[/video]
Computational Engineers at the University of Southampton have built a supercomputer from 64 Raspberry Pi computers and Lego.

The team, led by Professor Simon Cox, consisted of Richard Boardman, Andy Everett, Steven Johnston, Gereon Kaiping, Neil O'Brien, Mark Scott and Oz Parchment, along with Professor Cox's son James Cox (aged 6) who provided specialist support on Lego and system testing.

Professor Cox comments: "As soon as we were able to source sufficient Raspberry Pi computers we wanted to see if it was possible to link them together into a supercomputer. We installed and built all of the necessary software on the Pi starting from a standard Debian Wheezy system image and we have published a guide so you can build your own supercomputer."
Full story
The racking was built using Lego with a design developed by Simon and James, who has also been testing the Raspberry Pi by programming it using free computer programming software Python and Scratch over the summer. The machine, named “Iridis-Pi” after the University’s Iridis supercomputer, runs off a single 13 Amp mains socket and uses MPI (Message Passing Interface) to communicate between nodes using Ethernet. The whole system cost under £2,500 (excluding switches) and has a total of 64 processors and 1Tb of memory (16Gb SD cards for each Raspberry Pi). Professor Cox uses the free plug-in ‘Python Tools for Visual Studio’ to develop code for the Raspberry Pi.
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Re: Raspberry Pi Supercomputer

Posted: Tue Nov 06, 2012 8:02 pm
by ElZorro
"super"

I don't think that words means what you think it means.

Re: Raspberry Pi Supercomputer

Posted: Wed Nov 07, 2012 10:53 am
by complacent
ElZorro wrote:"super"

I don't think that words means what you think it means.
:rolllaugh:

i did mean to ask what some of the performance metrics were. even if it was just a teaching lesson showing the design and theory about distributed computing, it's still fun.

Re: Raspberry Pi Supercomputer

Posted: Wed Nov 07, 2012 1:02 pm
by Sabre
The CPU is like a PII, so not that powerful, but the GPU can do 24GFLOPs.

24GFLOPs x 64 = 1536GFLOPs
High power model: 700mA (5V) x 64 = 44.8 Amps (224W)
Lower power model: 300mA (5V) x 64 = 19.2 Amps (96W)
Reference

The Nvidia D870 does 1036.8GFLOPS @ 520W
Reference

I'm guessing it really won't hit those numbers, but I don't think that it would be a slouch either.