Visiting the German Climate Computing Centre (DKRZ) in Hamburg

Yesterday, I had an opportunity to visit the German Climate Computing Centre (Deutsches Klimarechenzentrum – DKRZ) here in Hamburg to learn more about their research and tour their data center.

They recently installed a new supercomputer named HLRE-4 Levante, and it was very impressive. What surprised me most was how quiet a data center can be inside when it’s water-cooled.

Some specs of this system include:

• 2,832 compute nodes
• Peak performance: 14 PetaFLOPS
• Main memory (total): 815 Terabyte
• 60 GPU nodes each equipped with 2 AMD 7713 CPUs (main memory 512 Gigabyte) and 4 Nvidia A100 GPUs
• Peak performance: : 2.8 PetaFLOPS
• Main memory: approx. 30 Terabyte
• Graphics memory: approx. 5 Terabyte
• Networking: NVIDIA Mellanox InfiniBand HDR 100G/200G
• Disk storage: 130 Petabyte (Lustre) by DDN
• Long-term storage is performed via an array of 8 Oracle/StorageTek SL8500 tape libraries (over 300 Petabytes total capacity)

I took some pictures that you can find here – enjoy!