Cooling stop at 17.00 hours the 23rd of May -- CANCELLED
UPPMAX got a warning about a stop in the cooling system of our computer room.
We can only run our systems without cooling for about 15 minutes, so we may need to stop Slurm queues on all systems.
We have added such a stop, but may during the remaining week decide that it is not needed, depending on negotiations with those responsible for the cooling stop.
Update on Monday, the day before the cooling stop
We now have planned the production stop in more detail, and are sorry to say that we need to close down all our compute resources at 1700 hours, even if they still run jobs.
The problem is that the temperature in the computer room will rise more quickly than we are able to close down our equipment, if we do not prepare by taking down most equipment in advance.
Update on Tuesday morning
We just received noticed from Akademiska hus that their cooling tests would not be as extensive as first planned. This means the announced cooling stop is now cancelled.
We will have staff to keep an extra eye on the cooling this evening, just to be sure, but the margin is big enough to keep all our systems running as usual.
We are sorry about the last minute change of information, and the inconvenience that the stopped Slurm queues may have caused you.
Maintenance window Wednesday 2017-09-06" -- FINISHED
milou2 rebooted August 28
milou2 rebooted Monday 2017-08-28 at 19:51.
Replacing (nearly) all disks on Irma's compute nodes
We're restarting irma-q for technical reasons. The slurm queue system may be unavailable for submitting/verifying job status for a few minutes.
milou2 rebooted August 19
milou2 rebooted on Saturday 2017-08-19.
Bianca's storage system Castor had a hiccup yesterday Thursday -- FIXED
Maintenance window Wednesday 2017-08-02 -- FINISHED
Unexpected reboot of Pica at Monday morning.
Restart of two Milou login servers today Thursday
Lower service level during UPPMAX holidays
Part of storage system Pica is still very slow
Pica was partly restarted just now, please look for problems in your job output
UPPMAX had to restart part of storage system Pica, because it worked too slowly with nearly no read/write traffic.
The restart was done a little after 1300 hours.
For Rackham users, this meant that you might have had problems with reading and writing to your home directory.
For Milou users, this meant that you also might have had problems with reading and writing to your home directory. But for Milou users, also reading from /sw (where the modules live) and reading and writing to some project directories were affected.
Please look one extra time for problems in your job output, for jobs running at this time.
We are sorry for the inconvenience.
On Milou and Rackham, very difficult to login or otherwise use /home directories -- FIXED
UPPMAX has problem with an extremely slow access to /sw (where e.g. modules live) and home directories on Milou, and to home directories on Rackham.
Because of that, it is very difficult to login to Milou and Rackham.
We will investigate the source of this problem, and will report any success as updates here.
Update at 1310 hours
We restarted part of Pica, and that solved the problem
Hopefully your jobs will continue without problems, but please be careful and look once extra time for errors in your job output.
SUPR and C3SE website down
SUPR and C3SE websites are down at the moment. This prevents you from using SUPR at the moment. Please try again later
No maintenance planned for today's maintenance window
First (non-holiday) Wednesday of each month is UPPMAX's normal, planned maintenance window.
But today we will do no maintenance.
Next maintenance window is 2nd of August.
Restart of login server milou-f Tuesday morning -- FINISHED
File system mounts of Pica volumes was not working correctly.
This was fixed by a restart of the server. Now it works much better.
We are sorry about any inconvenience for you due to this.
Lost contact with Milou nodes m[1-48] for an hour this morning -- FIXED
From approximately 0800 hours to 0910 hours this morning, an ethernet switch in Milou lost power, making 48 nodes unavailable.
Two jobs got NODE_FAIL when trying to start, and interactive work on these nodes was denied. Otherwise, we seem to have had no problems with the temporary network loss.
Singularity is available
Urgent kernel upgrade -- FINISHED
Today we are performing an urgent kernel upgrade on Milou, Fysast1, Rackham, Irma, and Bianca. Login nodes will be restarted during the day. No running jorbs or queues are stopped. We will update on the progress here in System News during the day.
UPDATE 16:00 - Update completed.
Intelmpi performance issues
Bianca graphical login now working
Uses Thinlinc Web Access. Not X-forwardning.
Bianca's storage system Castor has problems -- FIXED
Maintenance window Wednesday 2017-06-07 -- FINISHED