First Access to CoolMUC-4 on 10th December 2024

Linux Cluster Attended Cluster Node Housing

Dear users of the Linux Cluster at LRZ!

We are happy to announce that first access to the new CoolMUC-4(CM4) cluster system will be granted as of Tuesday, 10th December 2024.

Please be aware of changes within the LRZ Linux Cluster and HPC landscape. Both software environment, i.e. a module system update and a new default spack stack, as well as new hardware specifics may, however, impact your working setup and may require adaptation of your code.

Please familiarize yourself with the documentation.

Access to CoolMUC-4

Logging in with ssh to cool.hpc.lrz.de provides you accees to one of two login nodes. Two-Factor Authentication is enabled. Slurm job submission is possible here also for all housing customers to their respective private queues.

Technical Details

• some ~12.000 cores based on Intel® Xeon®Platinum 8480+ (Sapphire Rapids)
• NVIDIA/Mellanox HDR Infiniband (200 GBit/s) as the compute cluster interconnect
• SLES15 SP6 as operation system
• 112 CPU cores and 512GB RAM per compute node

The system will be introduced as outlined here:

• 09.12.2024: Partial update of the module system
• 10.12.2024: New access to CM4 login nodes via cool.hpc.lrz.de
• 10.12.2024: cm4_tiny | cm4_std | cm4_inter queues are opened
• 10.12.2024: cm4_inter_large_mem - is now deprecated and will no longer be available
• 16.12.2024: serial_std | serial_long queues are opened (80 IceLake CPUs and 1TB RAM per node)

Kind regards,

LRZ HPC Systems and Services Team