http://arstechnica.com/information-t...-pi-and-legos/
Step-by-step guide to make your own:
http://www.southampton.ac.uk/~sjc/ra...outhampton.htm
Sure, it isn't a practical HPC cluster; it's intended for educational purposes... but I think it's pretty inspirational stuff.
Inspired by the low-cost computing power of the Raspberry Pi, a team at the University of Southampton has used the ARM-based Linux computer-on-a-board as a building block for a low-cost supercomputer—racked and stacked using Lego blocks. And they’ve published a step-by-step guide for anyone interested in creating their own Raspberry Pi high-performance computing “bramble."
the team used 64 Raspberry Pi computers, each equipped with a 16-gigabyte SD card to construct a functioning computing cluster for under £2,500 (a bit over $4,000)—not including the Ethernet swtiches used to connect the nodes.
The software for “Iridis-Pi”—named after Southampton’s Iridis supercomputer—uses a free implementation of the Message Passing Interface and code written in Python to distribute parallel computing tasks. The first test run on the cluster: calculating the value of Pi.
http://www.southampton.ac.uk/~sjc/ra...outhampton.htm
Sure, it isn't a practical HPC cluster; it's intended for educational purposes... but I think it's pretty inspirational stuff.
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