Because there are quite a number of inactive accounts on Peregrine, we have decided not to automatically migrate the accounts to Hábrók, so your account on Peregrine will not automatically work on Hábrók.

If you want to use the new cluster, you need to request access to it by using the Self-Service Portal IRIS.

Please go to Research and Innovation Support → Computing and Research Support Facilities → High Performance Computing Cluster → Request Hábrók Account.

We will not automatically move your data from Peregrine to Hábrók. The filesystems on Peregrine, /home and /data will be made available read-only on Hábrók for three months after Peregrine shuts down. You will have this time to move your data to permanent storage on Habrok.

The data on Peregrine /scratch will not be migrated, since it is temporary space only.

The best tool for copying data from one location to the other is rsync. Here is an example showing how to synchronize a directory with files from the Peregrine /data, available under /mnt/pg-data on the login nodes to the new /projects on Hábrók:

rsync -av /mnt/pg-data/p123456/important_data/ /projects/p123456/important_data/

Note the slashes at the end of the source and the destination. The following flags have been used:

• -a: archive to copy everything recursively including file ownership and permissions
• -v: verbose to show the progress

You can also enable compression using -z, but this will only speed up the transfer of highly compressible data. Since sufficient bandwidth should be available for the transfers compression will probably only add overhead.

The best thing about using rsync is that you can restart the transfer in case of failures, and rsync will just continue where it stopped.

The group folders will also be available at /mnt/pg_data/pg-group, and we are currently creating new groups on Habrok. These groups will have a similar naming pattern as on Peregrine, e.g. pg-group becomes hb-group. We will then add the users to these new groups, and the new group will be the owner of the folder /mnt/pg_data/pg-group. From this point, the data can be copied over to Habrok using rsync, as explained above. The location for the group folder on Habrok will be /projects/hb-group.