[Snic-users] Tetralith and Sigma unavailable November 28th

[Mats Kronberg]

Dear Tetralith and Sigma users,

Tetralith and Sigma will be unavailable on November 28th from 08:00
CET.

The downtime will be at least four hours but more probably 8-16 hours.

Queued jobs that cannot be completed before 08:00 will not be
started. All logged-in users will be logged out at 08:00. Queued jobs
will remain in the queue and be started normally when the clusters are
back online. During the downtime you will not be able to access your
data on /home and /proj.

During this service window we will:

- upgrade the job scheduler (Slurm)
- upgrade the Omni-Path network fabric manager software
- reconfigure Centre Storage for increased stability
- perform routine software upgrades on login and compute nodes


Best Regards,

--
Mats Kronberg
National Supercomputer Centre (NSC)