[Snic-users] Tetralith and Sigma unavailable starting 2021-11-23 08:00 CET

[Mats Kronberg]

Tetralith and Sigma are now available.


Mats Kronberg <kronberg at nsc.liu.se> writes:

> Dear Tetralith and Sigma users,
>
> Tetralith and Sigma will be unavailable on November 23rd from 08:00
> CET. Estimated duration: a few hours.
>
>
> Details:
> --------
>
> 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 downtime we will reconfigure the network connection to the
> Centre Storage disk storage system (/proj, /home, /software).
>
> If you notice a significant change in job performance after this change,
> please contact support at nsc.liu.se.
>
> This change done to test a configuration that we are considering using
> for the partial replacement of the storage system that will take place
> sometime during 2022.
>
> If everything works well, you should notice any difference. We have
> tested the new configuration as far as is possible, but if it does not
> work well with real users and real jobs, we will need to schedule
> another downtime and either tweak the new configuration or revert to the
> original one.
>
>
> Best Regards,


-- 
Mats Kronberg
National Supercomputer Centre (NSC)