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New Tier-2 cluster: litleo#

Warning

The litleo cluster is currently only available to members of the gpilot user group.

In December 2024, a new cluster was added to the HPC-UGent Tier-2 infrastructure: litleo.

If you have any questions on using litleo, you can contact the HPC-UGent team.

For software installation requests, please use the request form.

litleo: GPU cluster#

litleo is a new GPU cluster.

It adds GPU capacity to existing clusters joltik and accelgor.

It is only intended for single GPU compute use.

This cluster consists of 8 workernodes, each with:

  • 1x 48 core AMD EPYC 9454P (Genoa @ 2.75 GHz) processor;
  • ~315 GiB of RAM memory;
  • 1.4TB local NVMe disk;
  • NDR-200 InfiniBand interconnect;
  • RHEL9 as operating system;
  • 2x NVIDIA H100 NVL (96GB VRAM)

To start using this cluster from a terminal session, first run: 

module swap cluster/.litleo

You can also start (interactive) sessions on litleo using the HPC-UGent web portal.

Difference compared to joltik and accelgor.#

The main difference between litleo and the other GPU clusters is that jobs are limited to using only one GPU per job. The motivation comes from historical analysis of GPU usage on the joltik and accelgor clusters that show a very high utilisation of a single GPU per job; combined with cost of the GPUs in 2024. It allowed us get the most out of the budget.

Litleo pilot phase (24/01/2025-01/03/2025)#

As usual with any pilot phase, you need to be member of the gpilot group, and to start using this cluster run:

module swap cluster/.litleo

Shortly after the Tier-2 maintenance in February 2025, the cluster will enter production, without any significant changes.