system news

The ThinLinc access to kebnekaise-tl.hpc2n.umu.se is now working again.

The login node behind it has been upgraded to Ubuntu Noble (24.04)

We have moved the kebnekaise.hpc2n.umu.se login host to a new machine.

This machine has a different SSH host key: SHA256:PpomhGO7eeljmDUdcp9sJGm/8Ek1sTEOTP+BwSRQrRQ

You may have to change or remove the old entry for the Kebnekaise login node from the known_hosts file. On Linux (and usually also macOS) you find this file under the directory .ssh/ in your home directory. On Windows it will be under %UserProfile%\.ssh

The entry for the Kebnekaise login node could begin with any of these in your known_hosts file

Dear users,

we are doing some maintenance on Kebnekaise starting 2025-12-10 07:00.

Everything will be down, no jobs running and login nodes disabled.

This will take the whole day and we expect to have things up and running again late on the evening the same day.

Watch this news info for updates.

*** UPDATE 2025-12-10 13:20 ***

The kebnekaise.hpc2n.umu.se login node has been moved to a new machine, see separate news entry about that.

Power outage

Due to rewiring of the main power connection to the MIT building (the building that, among others, is housing HPC2N), there would be a power outage all day on 2025-07-03, but it should not have affected the Kebnekaise cluster. 

The outage is planned for: 2025-07-03, 7:00 - 16:00. 

UPDATE: 

Some things did not go as expected, which means that Kebnekaise, the web, various infrastructure, etc. lost power and is currently down. 

UPDATE: 2025-07-03, 12:35

Parts of the infrastructure, as well as the web, is coming up. 

We will have a maintenance window 2025-01-07 - 2025-01-10 for upgrading our project and user home file system.

This means that Kebnekaise will be drained from running jobs during the week before and no jobs will be allowed to run during the maintenance window. The login nodes will also be unavailable for the same reason.

*UPDATE 2025-01-10 16:20*

The file system upgrade is now done.

Login nodes and batch system is up and running.

On 13 January 2025, Gaussian will disappear from Kebnekaise for non-UmU users.

For UmU users:
 - Send a support request via https://supr.naiss.se/support/login/?centre_resource=c1 and let us know that you need to use Gaussian.

For non-Umu users:
 - If you need to continue running Gaussian after that, you need to apply for time on a NAISS-system. You can find information on the NAISS systems here: https://supr.naiss.se/resource/

We will have a maintenance window 2025-01-07 - 2025-01-10 for upgrading our project and user home file system.

This means that Kebnekaise will be drained from running jobs during the week before and no jobs will be allowed to run during the maintenance window. The login nodes will also be unavailable for the same reason.

*UPDATE 2025-01-10 16:20*

The file system upgrade is now done.

Login nodes and batch system is up and running.

SUNET will perform network management on the connection to Umeå University on 2024-12-06 somewhere between 07:00 and 22:00

Connection to HPC2N from outside Umeå University will be unreliable during that time window.

The HPC2N Center Local rounds for compute and storage are now open for proposals.

The start date of allocations are 2025-01-01.

End date for HPC2N Center Local 2024 rounds are 2024-12-15.