Raspberry Pi Cluster
Everyone needs a cluster. I built mine out of Raspberry Pi 4s.
Documentation for how I built my own cluster and now you can too.
4 x Raspberry Pi 4s, 4 x 32 GB SD cards, 4 x 5V 3A power supplies, 1 x 5 port ethernet switch, 1 x 1 TB external hard drive, 1 x 4 port USB hub, 1 x 4 port USB
Why build a cluster?
The urge to build my own cluster came right after I started working at Oak Ridge National Lab and saw a bunch of supercomputers and came to realize their significance in the world of parallel computing. I wanted to build my own cluster because I wanted to learn how to do it.