Due to a recently discovered vulnerability in ThinLinc, all user sessions have been terminated and ThinLinc login disabled for now.

On Wednesday 2026-03-18 we will start an online upgrade of the storage system that contains users home directories and all project storage directories under /proj/nobackup.

/proj/cfl_nobackup will NOT be affected.

The upgrade will temporarily cause reduced performance and delays when accessing the file system.

To minimize problems with batch jobs the queues will from time to time be stopped from starting new jobs, but submitting new jobs will still work.

We will try to keep the impact to a minimum.

Course: NAISS Introduction training days, 1st to 3rd June 2026

Course: An introduction to parallel programming using Message Passing with MPI, 20-21 May and 27-28 May 2026

Dates: 20-21 May and 27-28 May 2026

Times: The course will start at 09:00 and finish at 12:30 each day.

Location: ONLINE

This online course is given under NAISS and is at the beginners level and assumes no prior experience in parallel computing. The concepts behind message passing and distributed memory computing will be introduced and the syntax of the key MPI calls will be explained.

Course: Introduction to Python and Using Python in an HPC environment

This online 4-day workshop aims to give a brief, but comprehensive introduction to using Python in a Swedish academic High-Performance Computing (HPC) environment. It covers a wide range of levels in using Python and you can decide which days to follow.

If you are a complete beginner, perhaps the first day(s) is sufficient for you, but you may follow the other days as well for inspiration. If you already are a Python programmer you could still benefit from attending the login session the first day.

We are upgrading Kebnekaise compute and login nodes to Ubuntu Noble.

This will result in some older softwares to not be available anymore. We've tried to build everything that is currently used but when that isn't possible there should be newer versions available instead.

If something is missing despite our efforts, please send a support case through the SUPR support case interface (or mail support@hpc2n.umu.se) and let us know.

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

HPC2N coffee chats

These informal coffee-chats, "HPC2N fika", are meant for HPC2N’s current and potential users.  

It is a chance for you to discuss any HPC-related problems associated with your research and to get advice from HPC2N’s application experts and other staff.  We usually start with a few updates about what is new at HPC2N and sometimes a talk by a researcher who uses Kebnekaise. After that the floor is open. 

These "HPC2N fikas” will in the fall of 2025 be on

OpenOnDemand at HPC2N

The OpenOnDemand portal is now in production at HPC2N and can be used to login and work on Kebnekaise.

It should offer a more direct way to work interactively with (among other): Jupyter, RStudio, MATLAB, VS Code, ...

It is still a work in progress, so expect there to be regular changes as well as minor bugs and things that are being ironed out.

You can connect by pointing your browser to: https://portal.hpc2n.umu.se