[Krypton-users] DONE: Krypton and Gimle downtime Thursday Feb 14, 10-12 CET

[Kent Engström]

kent at nsc.liu.se (Kent Engström) writes:
> Dear Krypton and Gimle Users,
>
> we need some downtime on Krypton and Gimle next week, for OS upgrades on
> Gimle and to prepare the Accumulus switch for the coming addition of
> more storage. This also involves some recabling for the Gimle nodes.
>
> After consulting with our users representatives, we have chosen
> Thursday February 14, 10-12 CET for the downtime window.
>
>   FOR KRYPTON, be prepared for Accumulus file system accesses to hang
>       for some time during this window while we work on the switch.
>
>   FOR GIMLE, be prepared for the login server and the nodes being
>       unavailable during the whole downtime.  Jobs will not run during
>       this downtime.  If you submit jobs now with a requested walltime
>       exceeding the time remaining until Feb 14 at 10:00, they will not
>       start before the downtime.
>
> Vagn will also be affected. Mats Kronberg will email all Vagn users
> about this.

This service stop is now over. Some of the Gimle Nehalem nodes had
problems booting. We will work on them later today and hope to get them
back in service soon.

-- 
Kent Engström, National Supercomputer Centre
kent at nsc.liu.se, +46 13 28 4444