[Triolith-users] Triolith unavailable April 3rd

[Mats Kronberg]

Just a reminder: Triolith will be unavailable next Monday, and this will
affect some of you this week (due to long jobs not being able to start).
See below for details.


-- 
Mats Kronberg, NSC Support <support at nsc.liu.se>



On Mon, Mar 20, 2017 at 3:38 PM, Mats Kronberg <kronberg at nsc.liu.se> wrote:

> Dear Triolith users,
>
> Triolith will be unavailable to all users from April 3rd at 09:00 CEST
> and for at least 8 hours.
>
> No access to the cluster will be possible during the downtime. All
> users will be logged out. Jobs that cannot finish before the downtime
> will not be started until after the downtime is over.
>
> During this downtime we will be performing file system maintenance and
> also reduce the size of Triolith (see below for details).
>
> It is difficult to predict how long the work will take. Due to a bug
> in the storage software, we need to run a full file system check and
> possibly a limited repair. We estimate at least 8 hours.
>
> We will inform you when Triolith is available again, and if the
> maintenance takes longer than 8 hours, keep you updated on its
> progress.
>
>
> Details on the Triolith size reduction
> --------------------------------------
>
> As many of you already know, due to reduced funding from SNIC all
> Medium and Large allocations on Triolith will be reduced by 40% of
> their current size from April 1st, 2017.
>
> We are not just reducing project's allocations, we are also reducing
> the number of compute nodes accordingly. The nodes no longer needed
> will be removed from Triolith and re-used in another system.
>
> At this time, we believe that Triolith will continue to run at this
> reduced size until a replacement system is available, or at least
> until July 1st, 2018.
>
> The part of Triolith used by normal SNIC projects will be reduced from
> 1536 nodes to 960.
>
> The number of fat nodes will likely be reduced from 56 to 46.
>
> The number of GPU nodes will likely be reduced by one (to 4).
>
> The number of huge(2), DCS(12), WLCG(52), devel(8) and phi(3) nodes
> will remain unchanged.
>
>
> --
> NSC Support <support at nsc.liu.se>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.nsc.liu.se/mailman/public/triolith-users/attachments/20170328/4caea4b2/attachment.html>