Welcome to the Computing Centre High Performance Computing web site. You'll find documentation, information and services dedicated to the utilisation of HPC at ULB/VUB but also in the context of the Vlaams Supercomputer Centrum (see the VSC web site) and the Consortium des Equipements pour le Calcul Intensif (see the CECI web site).
ULB/VUB, VSC and CECI users have access to HPC resources hosted at the Computing Centre. The clusters available at the Computing Centre are:

Hydra is a balanced cluster, i.e. suitable for single-core, small multi-cores (SMP) and multi-nodes (MPI) jobs. ULB and VUB users can freely access the cluster provided that they have activated their account on Hydra. The cluster allows running very long jobs (several weeks).
Vega is a CECI cluster offering many cores, suitable for SMP and MPI jobs. SMP and MPI jobs can use up to 1024 cores in a single run. Compute nodes density offer 64 cores and 256GB RAM. The storage system is performant enough to host IO intensive jobs as well.


Hydra: planned maintenance - 03/07 to 06/07
Tue, 06 Jun 2017 18:22:21 +0200
We are planning a maintenance window on Hydra from 03/07 to 06/07 with a scheduled downtime.
A reservation will be placed on the cluster from 19/06. Jobs that can complete before the 03/07 will (continue to) run and those submitted with a walltime bumping into the maintenance window will be kept pending until the maintenance is completed.
Cooling system operational
Tue, 09 May 2017 16:53:14 +0200
The cooling system is now back to normal.
The Vega and Hydra clusters are fully operational too.
Air-co failure: Hydra and Vega stopped
Tue, 09 May 2017 10:48:42 +0200
Dear all,

This morning at ~ 9:30 the datacentre cooling system failed. Given the temperature increase in the datacentre we had to switch off the Hydra and Vega compute nodes.
Once the cooling system has been repared, we'll switch on the compute nodes.
Jobs that were running will be lost but those in the queue have been kept. All data are safe on the Hydra storage. We'll send another notification once the clusters are back online.

The HPC team.
Hydra: job manager overloaded
Fri, 17 Mar 2017 11:30:01 +0200
The job manager is not responding properly to commands for the time being due to excessive jobs submitted.
We are deleting the problematic jobs from the queue. Once the operation is completed, qsub or qstat command should respond within normal time.