FAQ

Allocated disk space (quota) is exceeded. What happened?

Each user has a default amount of allowed disk usage on mount point /scratch (actual hard limit are 5 TB).

On each login the so-called message-of-the-day prompts the personal status of the quota on /scratch, e.g.

Disk quotas for user xy123ab (uid 12345):
     Filesystem  kbytes   quota   limit   grace   files   quota   limit   grace
       /scratch 1785264656  5261334937 5368709120       -  351193       0       0       -

This report can also be requested by (here TB based amounts)

lfs quota -h -u `id -un` /scratch

In case of exceedance, a login is possible but no more data can be generated on /scratch, i.e. no more jobs can succesfully started/run. Then the user must first reduced the used disk space by transferring data to other storage. For further usage the /home folder or storage in each workgroup should be used. Final archiving can be done by TSM-archive server, please contact hpc-support-team.

How can I transfer data from and to magnitUDE ?

Once you can login to magnitUDE via ssh, you can mount your $HOME folder and/or /scratch/user folder via sftp. For alternatives and an example on using Filezilla for this, review the best practices section.

When will my job start?

The job scheduler slurm is used on magnitUDE to manage the computational ressources. It will start your job baesd on internal scheduling algorithms.

What is the content of the report of usage?

(Comment: For each account period a report of usage is mandatory !!!)

It should contain the following topics (1/2 to 2 pages):

  • What has been calculated/simulated?

  • What has been changed wrt. the outline in the application?

  • Which applications/software/libraries/… have been used?

  • Have you any suggestions regarding the usability of the system?

  • List of publications (if possible including DuePublico-ID)

In general, it should be more specific and detailed as in the former account application!

=> Please send it as PDF to hpc-proposal@uni-due.de!

How can I renew my user account?

Before the renewal of your user account, a report regarding the previous usage period has to prepared (see section 2.5 in user policy). See above.

Afterwards, you can apply for a new account period on https://www.uni-due.de/css/magnitude_zugang_antrag

How can I change my password for my magnitUDE account?

Since the access to magnitUDE is controlled by your ZIM-account, you must change the password for this account via the Selfcare-Portal: https://benutzerverwaltung.uni-duisburg-essen.de/portal/

Remark: The change will also effect all other online services using the account, see https://www.uni-due.de/zim/services/benutzerverwaltung/unikennung.shtml