Max Planck supercomputer Viper ranked among the most powerful and energy-efficient systems in the world

The GPU-powered part of MPCDF’s new supercomputer Viper was successfully benchmarked and ranked high in the most recent issues of the semi-annual Top500 and Green500 lists which were released on June 10, 2025 at the International Supercomputing Conference in Hamburg.

The GPU-powered part of the new supercomputer Viper of the Max Planck Society, delivered by Eviden/Atos, entered the June 2025 edition of the Top500 list of fastest supercomputers, released today alongside the International Supercomputing Conference in Hamburg, with a measured HPL (high-performance linpack) benchmark performance of 31.1 PetaFlop/s, ranking Viper-GPU as number 54 on the list. On the HPL benchmark, which was executed on all of its 600 AMD MI300A accelerated processing units (APUs), Viper-GPU achieved an efficiency of 64 GigaFlop/s per Watt of electricity which puts it on rank 13 of the Green500 ranking of the most energy-efficient supercomputers.

For comparison, MPCDF’s other supercomputer Raven-GPU which still serves as a major supercomputing workhorse with 768 Nvidia A100 GPUs achieved 8.3 PetaFlop/s (rank 47 in Top500) and 23 GigaFlop/s per Watt (rank 12 in Green500) back in 2021, which illustrates significant evolution in hardware technology.

The 300 Viper nodes are interconnected via InfiniBand NDR (400 Gb/s) and use IBM Storage Scale storage (HDD and NVMe) with approx. 12 petabytes capacity. Viper-GPU was opened for early-user operation in February 2025 and has already been running several applications from plasma physics, astrophysics, materials research and biophysics.
More details about Viper can be found on the MPCDF webpage and in the technical documentation for users.