Frequently Asked Questions

Can Abacus be used for handling of sensitive personal data (følsomme persondata)?

No. Data has to be desensitized by employing anonymisation prior to upload to Abacus.

There are two categories of anonymisation:

  • Anonymised – stripped of any elements that would allow identification of individuals.
  • Pseudo-anonymised – individual records could be identified by authorised personnel.

Abacus can only be used for the first category, i.e., personal data must always be fully anonymised before it is copied to Abacus. Adequate anonymisation involves removal of any information which identifies or could lead to the identification of individuals, including but not limited to the names, cpr numbers, addresses, etc. Encryption or hashing of identification data is not considered adequate anonymisation.

You are welcome to contact us if you have any questions.

How do I run MPI jobs

The recommended way to run MPI jobs is to create a sbatch job script using a combination of --nodes and --ntasks-per-node to get the number of nodes and MPI ranks per node you want.

In the job script, use srun to start the application (and not mpirun).

For further information, look at our Slurm help page.

How do I specify that I require a slim node with a large local disk?

256 of the slim nodes have a 400 GB SSD disk, while the remaining 192 slim nodes have 200 GB. If your application requires a large disk, you can specify this by adding --constraint=d400 to your sbatch command or sbatch script.