BwUniCluster2.0/Maintenance/2024-05

The following changes were introduced during the maintenance interval between on 21.05.2024 (Tuesday) 08:30 and 24.05.2024 (Friday) 15:00.

We are not planning to change the host key of the system. You should not receive any warnings by your SSH client(s), but if there should be a warning or if you want to check that you are connecting to the correct system, you can verify the key hashes using the following list:

Algorithm	Hash (SHA256)	Hash (MD5)
RSA	p6Ion2YKZr5cnzf6L6DS1xGnIwnC1BhLbOEmDdp7FA0	59:2a:67:44:4a:d7:89:6c:c0:0d:74:ba:3c:c4:63:6d
ECDSA	k8l1JnfLf1y1Qi55IQmo11+/NZx06Rbze7akT5R7tE8	85:d4:d9:97:e0:f0:43:30:6e:66:8e:d0:b6:9b:85:d1
ED25519	yEe5nJ5hZZ1YbgieWr+phqRZKYbrV7zRe8OR3X03cn0	42:d2:0d:ab:87:48:fc:1d:5d:b3:7c:bf:22:c3:5f:b7

1 Hardware

• All firmware versions on all components will be upgraded.

2 Operating system

• The operating system will be upgraded from RHEL 8.6 EUS to RHEL 8.8 EUS. We recommend to re-compile all applications after the upgrade.

• The Mellanox OFED InfiniBand Stack will be updated.

3 Compilers, Libaries and Runtime Environments

Certain older compilers will be deprecated (hidden, aka module load compiler/gnu/9.3 will only be available as module load compiler/gnu/.9.3)

6 Batch system

• The Slurm version will be upgraded to version 23.11.x

7 Storage

• Lustre client, BeeGFS client and Spectrum Scale client will be updated.

8 Graphics stack

• The NVIDIA driver will be upgraded.

10 JupyterHub

• Jupyterhub will be upgraded