“The new CooLMUC 3 system outperforms its predecessors in a number of respects, including its key feature of cooling in thermally insulated racks all compute and login nodes, power supply units, and Omni-Path switches directly with hot water, a combination the likes of which has never been seen before,” said Axel Auweter, Head of HPC Development at MEGWARE. “Even at a cooling water temperature of 40 degrees Celsius and a room temperature of 25 degrees Celsius, a maximum of just 3% waste heat is produced in the ambient air.”