[Nebula-users] Nebula nodes unavailable 29 September

[Kent Engström]

Dear Nebula Users,

we are currently replacing the UPS systems in the computer room where
Nebula is located, and at the end of that we need to verify the
performance. Tests have been scheduled on 29 September.

To be able to achieve the correct power usage level for parts of the
test, we need to be able to turn of the Nebula nodes. Therefore, we have
reserved the Nebula nodes from 08:00 on 29 September. The nodes will be
returned to service later that day when the tests have been concluded.

Note:

1) The login node and the storage will be available during this time.

2) Jobs submitted in the week before the downtime need to have a
   suitable TimeLimit ("-t" option) specified in order to start. If the
   TimeLimit specified places the end time of a job beyond
   2020-09-29T08:00 it will not be started until after the downtime.

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