News – Hochleistungsrechnen

News

and Announcements about the HPC

Keep yourself up to date with news and notifications about the Lichtenberg High Performance Computer. With the radio symbol right atop the news, you can subscribe to its RSS feed.

Lichtenberg Cluster temporarily closed

2026/07/10

Further security issues
Large Parts of Lichtenberg Phase 2 up and running

2026/05/29

Continued work on the 2000A power rail

Today, the majority of the compute resources in LB2A2 has been brought up and is available again.
HPC and Housing: Power Outage (non-UPS) in L5|08

2026/05/20

Rearrangements on the 2000A power rail

For modification works on the 2000A power rail, this main power distribution rail needs to be switched off from the mains.
Change of ssh host keys on the Lichtenberg

2026/05/20

Today, all ssh host keys for the Lichtenberg nodes have been updated.
Update of RedHat

2026/05/04

on all nodes from 9.4 to 9.6

Updating the operating system's minor release from 9.4 to 9.6 will incur almost no differences wrt to (binary) programs. However, the software stack will be upgraded, too.
Picture: Canva

Picture: Canva

2FA at Lichtenberg HPC

2025/12/08

for password-based authentication

No changes for key-based ssh access to the Lichtenberg cluster.
Upload of and Login by ssh Public Key

2025/11/03

More convenient (and more secure!) logins to the HPC

For the key-based ssh access to the Lichtenberg cluster, you can now upload a suitable ssh public key into the TUDa IDM system.
New ssh policies

2025/10/23

RSA no longer supported

For the key-based ssh access to the Lichtenberg cluster, the type RSA has been removed from the list of accepted key types.
Network problems affecting cluster operations

2025/07/19

Queues have been halted

+++ Update 2025-07-22 +++ Queues have been reactivated