Data centres / Germany
HLRS Stuttgart (Hunter and HammerHAI)
OperatingGermany4 of 13 fields known
Stuttgart-Vaihingen, Germany.
- Operator
- High-Performance Computing Center Stuttgart (HLRS)
- Owner
- University of Stuttgart
- Stage
- Operating (source, 16 January 2025)
- Cooling
- Hunter uses fully fanless direct liquid cooling.
Hunter is in service; the HammerHAI AI Factory system was contracted in March 2026 for operation in the second half of 2026, which we have not confirmed. No MW figure found.
What we checked
- HLRS says Hunter was inaugurated on 16 January 2025 with 48.1 petaflops peak and 188 nodes of AMD MI300A. (source)
- A March 2026 trade report says EuroHPC signed a contract with HPE for HammerHAI at HLRS, expected to run in the second half of 2026. (source)
What we do not know yet
4 of 13 fields in a complete record are filled. Still missing:
- Capacity (MW)
- Power source
- Grid connection
- PUE
- Water use
- Chips
- Connectivity
- Certifications
- Planning reference
Checked on 2 October 2026. Reported and planned figures are shown as such. Not yet reviewed line by line by a second person. If something is wrong or you know more, tell us.