High Performance Computing infrastructure

HPC-UGent system status

Status

Tier-2 UGent
Login nodes: Available
Compute nodes: Available (swalot will be migrated to RHEL8 on 16 May 2022 - more information here)
Shared filesystems: Available
Tier-1 Hortense (VSC)
Login nodes: Available (only for accepted Tier-1 compute projects - see https://www.vscentrum.be/compute)
Compute nodes: Available
Scratch filesystem: Available
Tier-1 Cloud (VSC): Available (only for accepted Tier-1 cloud projects - see https://www.vscentrum.be/cloud)
VSC account page: Available

Known issues

Slurm resource manager database overloaded - impacts job submission on all clusters

  • [Fri 22 April 2022 - 18:05] Problem resolved. We will keep monitoring the system and analyze the underlying cause.
  • [Fri 22 April 2022 - 16:40] The Slurm resource manager database is being overloaded, which results in error messages like "Connection timed out" when trying to submit jobs.
    We are looking into this issue and are trying to resolve it ASAP.

Planned maintenance

Reboot of Tier-2 login nodes

The HPC-UGent Tier-2 login nodes were rebooted on Mon 2 May 2022 at 19:00 as a part of scheduled maintenance to resolve some problems.


Migration of Tier-2 clusters to RHEL8 (March-May 2022)

During the first half of 2022, we will migrate the HPC-UGent login nodes and the oldest Tier-2 clusters that are using CentOS 7 as operating system
to RHEL8 (Red Hat Enterprise Linux 8).

More information, including a detailed planning + overview of the impact of this migration, is available here.

Reminders

  • [Wed 9 June 2021] New job command wrappers
    We switched to new job command wrappers for all HPC-UGent Tier-2 clusters.
    This switch should be transparant: you don't need to change your workflow or job scripts.
  • [Wed 27 May 2020] All SSH public keys uploaded before 20 May 2020 have been revoked.
    More information regarding this security operation at https://docs.vscentrum.be/en/latest/security_measures_20200520.html

Contact

For issues regarding Tier-2 UGent systems, contact hpc@ugent.be

For issues regarding Tier-1 Compute (VSC), contact compute@vscentrum.be

For issues regarding Tier-1 Cloud (VSC), contact cloud@vscentrum.be

Cluster load of Tier-2 UGent systems

Consult http://hpc.ugent.be/clusterstate/

(only available within the UGent network)