The Greja cluster is operated for SMHI research and development. It follows in the footsteps of the earlier clusters Gimle, Dunder, Krypton and Bi.

The system was delivered at the start of 2024 by and made available to users in February 2024.

User documentation

System Details

Hardware Custom design based on SuperMicro servers
Processors 32-core AMD EPYC 9354
Number of compute nodes 78
Compute nodes (thin) 2 sockets (64 cores) and 384 GiB memory
Compute nodes (fat) 2 sockets (64 cores) and 768 GiB memory
Login node 1 socket (32 cores) and 768 GiB memory
High speed interconnect 2 Omnipath 100 per node
Node scratch storage 65 TiB (865 GB per node)
Global file system SMHI's NFS and Lustre file systems /home and /nobackup
Operating system Rocky Linux 9
Batch queue system Slurm

Research performed with Freja

Freja is used by the research division of SMHI, primarily for applications in climate, meteorology and oceanography. In the climate area, SMHI collaborates with European partners in the development, analysis and use of both global and regional climate models, and with impact studies in the fields of oceanography, hydrology and air quality.

Who can use Freja?

Access to Freja is granted by SMHI.

User Area

User support

Guides, documentation and FAQ.

Getting access

Applying for projects and login accounts.

System status

Everything OK!

No reported problems


NSC Express