System status

Please note: this is a manually updated message.

We will try to update this message when we have major user-visible problems on any of our systems. We also provide information via email to all users of affected systems (via the somesystemname-users@lists.nsc.liu.se mailing lists).

If something is not working, please don’t hesitate to contact us even if this message says that everything is working! Sometimes we forget to update this page when we’re busy investigating a major problem…

Times and dates are in local time (CET/CEST) unless stated otherwise.

Click here for Arrhenius status information

Ongoing

• 2026-11-11 14:00-15:00: Staggered restart of Berzelius Ampere’s login nodes.
• Tetralith is being retired. All compute nodes are now shut down, it is no longer possible to run jobs. No access to the login nodes will be possible after 2026-10-14 23:59 CEST. Data remaining after 2026-10-14 will be deleted. See https://www.nsc.liu.se/support/storage/snic-centrestorage/tetralith-retirement/ for more information.

Future planned maintenance

Recently resolved problems and planned maintenance

• 2026-09-02 from 07:00 CEST: Planned reboot/upgrade of Tetralith login nodes.
• 2026-09-03 from 07:00 CEST: Planned reboot/upgrade of the Sigma login node.
• 2026-11-04 15:00-16:00: Planned downtime to apply a Linux kernel security update.
• 2026-11-04 16:00-17:00: Planned rolling reboot of login- and system nodes to apply a Linux kernel security update.
• 2026-11-10 14:00-16:00: Staggered restart of Berzelius Hopper’s login nodes.

Queue system status

An overview of the overall system load is available on the status page.

Graphical representations of the current queue on some of our systems:

• Tetralith
• Sigma
• Freja