World’s 5th most efficient supercomputer runs 100% on green energy

Paderborn University’s new supercomputer, Otus, has achieved the rank of fifth most energy-efficient supercomputer globally on the Green 500 list, which benchmarks high-performance computing systems based on energy efficiency rather than raw speed. Otus, developed by Lenovo and pro-com Datensysteme GmbH, features 142,656 processor cores, 108 GPUs, AMD’s latest ‘Turin’ processors, and a five-petabyte IBM Spectrum Scale file system. It operates entirely on renewable energy, uses indirect free cooling for year-round efficiency, and repurposes its exhaust heat to warm buildings, underscoring its sustainability credentials. The supercomputer is expected to be fully operational by the third quarter of 2025. Otus nearly doubles the computing power of its predecessor, Noctua, enabling it to handle a wide range of CPU-intensive tasks such as atomic simulations and quantum computing. Its expandable architecture supports up to 100 field-programmable gate arrays (FPGAs),