SuperMUC

The Leibniz Supercomputing Centre (LRZ) in Munich, Germany, contains no ordinary supercomputer. Sure, it has thousands of servers, or nodes, stacked in rows in a windowless vault with technicians working diligently on huge data crunching conundrums for research organisations; running simulations to try and better predict future natural disasters like tsunamis and earthquakes. But it is eerily quiet. Almost too quiet. The familiar whir of hot air being whooshed away by power-hungry computers is almost entirely absent. Where are all the fans? Almost all gone, as it turns out. The LRZ SuperMUC NG, which uses massive arrays of Lenovo’s ThinkSystem SD650 servers, requires nearly no fans at all – just those for cooling the power supply units and in the in-row-chillers on every eighth row. As a r...