It's not only the ability to administer a single system, but high-performance systems/clusters. This is also a very different skill set than just knowing how t

It's not only the ability to administer a single system, but high-performance systems/clusters. This is also a very different skill set than just knowing how to setup and run a single system. All of the sudden you have to worry about how systems interact, how to maintain them, and how to get the most performance out of the cluster that you can. All while balancing heat, power, and cost. These get real hairy real fast.