Systems

Browse all posts in the Systems category.

1 to 6 of 35

15MAY 2026
Allgemein
Temporary software problems on all clusters
Due to yet another security problem in the Linux kernel discovered tonight (currently only known as “ssh-keysign-pwn” with no assigned CVE number yet), we have had to deploy a mitigation across all our clusters. As a result, the ‘ptrace’ system call is currently restricted, and that breaks a few things – mostly debugging tools like […]
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02MAY 2026
Systems
OS-Upgrade of Alex from AlmaLinux8 to AlmaLinux9
Throughout the month of May, Alex will be gradually upgraded from AlmaLinux 8 to AlmaLinux 9. In addition to the operating system itself, most development and application software is updated to current versions. Testing the AlmaLinux9 environment To already test the new software environment now, proceed as follows: Planned schedule (as of April 29th) Provided […]
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29APR 2026
Systems
Partial outage of Fritz and Helma on Monday, May 4th
Half of Fritz and all H200 nodes of Helma will be unavailable on Monday, May 4th, from 06 to 19 o’clock due to work on the power grid. UPDATE 2026-05-04 @ 17:30: we did not get any update from FAU-Betriebstechnik; batch processing probably cannot be resumed today UPDATE 2026-05-05 @ 09:00: batch processing has been […]
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21APR 2026
Allgemein
[Resolved] Downtime of Fritz on April 23 and 24
There will be a scheduled downtime of Fritz from April 23, 7 am till April 24, 3 pm due to maintenance work on the clusters power supply. Jobs that would collide with the downtime will automatically be postponed until after the downtime. Update 2026-04-24@13:30: Fritz is up and running again.
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02APR 2026
Allgemein
[Resolved] Downtime of Helma on Apr 7 due to maintenance of CDUs
On Tuesday, April 7, Helma will be down due to a maintenance of cooling distribution units (CDUs). Currently, we are confident that the system will be back online in evening the same day. Update: The cluster is up and running again.
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18MAR 2026
Allgemein
Downtime of Helma on Mar 23 due to maintenance of CDUs
On Monday, March 23, Helma will be down due to a maintenance of cooling distribution units (CDUs). Currently, we are confident that the system will be back online in evening the same day. UPDATE 23.03., 11:45 – Maintenance finished, Helma up and running again
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