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

• 2025-04-29 from 07:00 CEST, duration 2-3h: Upgrade and reboot of the Tetralith login nodes. Logged-in users will be logged out at least once, but at least one login node will be available at all times. Batch jobs not affected.
• 2025-04-30 from 07:00 CEST, duration approx. 30 minutes: Upgrade and reboot of the Sigma login node. Logged-in users will be logged out. Not possible to access Sigma from the outside durin g upgrade. Batch jobs not affected.
• 2025-04-30 from 07:00 CEST, duration 2-3h: Reboot of the Berzelius login nodes for urgent system upgrades. Logged-in users will be logged out at least once, but at least one login node will be available at all times. Batch jobs not affected.

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.

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