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.

Ongoing

• none

Future planned maintenance

• none

Recently resolved problems and planned maintenance

• 2025-04-04 from 09:00 CEST for at least 48 hours: Berzelius unavailable due to planned filesystem check. Update 2025-04-07 09:00 still down for filesystem check. Update 2025-04-09 17:00 login enabled, but not possible to run jobs due to filesystem issues. Update 2025-04-14 10:30 There will likely be a full filesystem restart with stopped IO during the restart. At this time it is unclear when this will be performed. See this email for details.
• 2025-03-31 from 08:30 CEST to 12:00 CEST: Tetralith and Sigma unavailable due to planned hardware repairs in NSC Centre Storage.
• 2025-03-13T22:20 CET to 2025-03-14T11:25 CET: Tetralith and Sigma unavailable due to a problem in the NSC Centre Storage storage system. Almost all running jobs failed.
• 2025-01-20T09:00 CET to 2025-01-27T16:30: Extended due to issues with establishing reliable connections to the storage. Berzelius unavailable due to expansion of the storage fabric. See this email for details.
• 2025-01-15 from 08:00 CET: Tetralith, Sigma and Freja will be unavailable due to significant maintenance (pipes, welding, etc.) on the datacenter cooling system. We estimate that the systems will remain down until lunch the next day (January 16th).

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
• Bi