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Maintenance on the file system 2022-06-(27-30)

  • Posted on: 17 June 2022
  • By: bbrydsoe

On Monday 2022-06-27 we will start an upgrade of the file system servers.

Our hope is that this will reduce the amount of problems we have had the past couple of weeks.

The reason for the rather long maintenance window is that we will do some cleanup of potential and known problems before the upgrade and that is expected to take a relatively long time.

Further information on progress etc will be updated on this page.
 

2022-06-10 07:00 Storage system issues causes Kebnekaise login and fileaccess problems (UPDATE 2022-06-14: Still problems)

  • Posted on: 10 June 2022
  • By: brorerik

Storage system issues causes Kebnekaise login and fileaccess problems

We are working on resolving the problem

 

UPDATE 2022-06-14: We are still having problems. We are currently waiting for the vendor to come back to us with a solution.

 

Course: Using Python in an HPC environment, 9 September 2022

  • Posted on: 24 May 2022
  • By: bbrydsoe

UPPMAX and HPC2N are organising a joint ONLINE workshop on how to run Python codes and install additional Python packages on the computer resources provided by these two HPC centres. Participants are encouraged to bring their particular software request for discussion as well.

The goal for the course is that you will be able to:

Course: Introduction to Kebnekaise, 2022-09-15

  • Posted on: 24 May 2022
  • By: bbrydsoe

Course: Introduction to Kebnekaise, 2022-09-15

In this course, we begin with a short introduction to the Linux operating system (OS) that is used on HPC2N's compute cluster, and is the most common OS in HPC clusters. This part is only meant for complete beginners to the Linux operating system, and can be omitted if you are proficient already. See the schedule.

Talk: Julia programming: HPC topics, 2022-05-30

  • Posted on: 9 May 2022
  • By: bbrydsoe

Julia programming: HPC topics

Abstract: In this talk, Kristoffer Carlsson, developer at Julia Computing in Sweden, will talk about the Julia language with particular emphasis on performance in an HPC setting. Topics mentioned will be Julia's compilation pipeline, SIMD, parallelism (shared and distributed memory), among others.

Time and date: 30 May 2022, 14:00-15:00 CEST

This event is free and will be online. The talk will be recorded.

Course: Intermediate Topics in MPI, 14-17 June 2022

  • Posted on: 9 May 2022
  • By: bbrydsoe

This workshop targets programmers in both academia and industry who already have experience with basic MPI and are ready to take the next step to more advanced usage. Topics which will be covered include communicators, groups, derived data types, one-sided communication, non-blocking collectives and hybrid MPI+threading approaches. Lectures will be interleaved with hands-on exercises. All exercises will be written in C, but the instructors will be able to answer questions about MPI in Fortran and Python.

Cooling problem in computer hall, cluster down 2022-04-04 14:00

  • Posted on: 4 April 2022
  • By: ake

The cooling has failed in the computer hall causing an emergency power break.

We're investigating the reason and will try to get the cluster back as soon as possible.

 

* UPDATE 2022-04-04 16:30 *

The cluster is being brought up, this will take a while longer.

But  more cooling-related work needs to be done tomorrow, so we have put a reservation on the cluster starting 2022-04-05 13:00.

This means that only short jobs will be allowed to start until after the next cooling work is finished and the system is safe to bring up fully.

Maintenance on the cooling system for the cluster compute datacenter 2022-03-24 05.00 (Closed 2022-03-25 12:20)

  • Posted on: 17 March 2022
  • By: brorerik

 

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Update 2022-03-25 12:20 Maintenance ended and Kebenkaise is up and running again and the accessnodes are also open

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Updated 2022-03-25 07:10 We have done most of the work and the current plan is that Kebnekaise will be up after 12.00 today

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On Thursday 2022-03-24 from 05.00 there will be maintenance on the cooling system for the cluster compute datacenter.

At the same time we will also do maintenance on the parallel file system.

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Updated: 2022-06-17, 17:00