Arrhenius

Host data centre

NAISS, Linköping University

Description

Arrhenius is the new powerful supercomputer that NAISS is building together with EuroHPC JU. Installation of the system started in December 2025. It is scheduled to open for general use in June 2026.

The procurement process concluded in July 2025 with the selection of HPE to deliver the system. It has the following specifications:

• A HPC partition with 424 AMD Turin 128-core CPUs and 382 GPU nodes, each with four Grace Hopper Superchips from NVIDIA
• One partition for persistent computing and data with a cloud interface
• One partition dedicated to sensitive data
• A fast 29 PB parallel file system for storage

The GPU part has an HPL (High-Performance Linpack) performance of 66.8 PFLOPS – approximately seven times that of the previous most powerful NAISS system, Dardel.

The contract includes training and collaboration efforts to port and optimise scientific applications to Arrhenius. To ensure good service and maintenance, HPE also has on-site engineers at NAISS.

The system is named after Swedish geologist and chemist Carl Axel Arrhenius who discovered the mineral gadolinite.

For a more detailed technical description, go here.