How to make yourself a supercomputer at home

I just made myself a 18 core cluster with a price close to a high profile workstation and cheaper than cloud price (e.g., 8 core, Cluster Compute Quadruple Extra Large Instance from Amazon cost $1450/yr). With the same amount of budget, you can own more than 8 cores forever. Here is how: follow the steps on this weblog and build a cluster like this.