[Vagnekman-users] Re: Information about Ekman service windows during the next two to three weeks

[lama at pdc.kth.se]

Hello,

an update as of 2009-08-20:

The trucks with CPUs will arrive tomorrow Friday, 2009-08-21.

Replacement work can start by Monday morning, 2009-08-24.

New scheduling block set to Monday morning (09:00.)

$
$ spstatus           # or spq
[..]
---- System Actualities ----

Note: All reserved between 2009-08-24/09:00:00 and 2009-08-25/09:00:00 (24h)
$
$

When we consider the 'CPU replacement assembly lines' to work smooth
and safe enough, we will re-enable parts of the system where CPUs
already have been replaced. Please consider the 24hour duration
indicated above an early approximate.

regards,
lars/pdc-staff.
- - - 
  [..]

> there are unfortunatelly further delays in the delivery of CPUs.
>
> The start of the upgrade is postponed until Thursday morning.
> This is reflected in the output of, i.e. spstatus or spq
>
> ekman$
> ekman$ spstatus
> [..]
> ---- System Actualities ----
>
> Note: All reserved between 2009-08-17/09:00:00 and 2009-08-17/12:00:00 (3h)
> Note: All reserved between 2009-08-20/09:00:00 and 2009-08-21/09:00:00 (24h)
> ekman$
>
> No jobs are allowed to execute over the above reservations. The
> above window(s) are not static. Once the upgrade work is flowing,
> we will try to make a sub-set of the system available for jobs.
>
> We are sorry for the inconvenience.
>
> regards,
> lars/pdc-staff.
>
>   [..]
>
>>> Due to delays in delivery of the CPUs the update schedule will be
>>> revised as follows:
>>> All replacements will be carried out between 17/8 and 21/8. We will
>>> make an effort to keep as many nodes as we can available during the
>>> upgrade but there may be as few as about 230 nodes available during
>>> that period (these 230 nodes were upgraded the last week).
>>> Also - Please note that from now until all nodes has been updated
>>> Ekman will contain nodes with two different CPU's. We expect the
>>> performance difference to be very small but you should still be aware
>>> that there may be some. If you want to know the cpu version on the
>>> node you are running on you can always do:
>>> grep "model name" /proc/cpuinfo | sort --unique

  [..]