RWTH High Performance Computing (HPC)

Due to unresolved security issues, the access to the CLAIX dialog systems is restricted at the moment. Updates are being prepared. Once deployed, the dialog nodes can be opened again.
Already submitted batch jobs are not affected and scheduled.

We would like to inform users of the ongoing security updates we are deploying across the Claix Cluster.
These updates aim to patch a dangerous root exploit that could affect the entire system.
In addition to the existing login nodes, all compute nodes haven been drained to apply the necessary security patches.
Login nodes are patched and should be usable for users. The compute nodes on the other hand are being drained.
As individual compute nodes go idle and available for updates, we will deploy the security patches.
Since the progress is gradual as nodes go free and idle from the draining procedure, the time require to patch the entire system might take over a week.
If you are an HPC user with active jobs, we recommend you cancel any non essential jobs manually using scancel.
This will free the susceptible nodes sooner for security updates.

up to now, 22 out of 48 GPU systems are still not updated as also 144 out of 661 HPC systems.
We are continually working on updating the systems as soon as they are empty.

Im angegebenen Zeitraum führt das IT Center Wartungsarbeiten an den MySQL-Datenbanken der Multi-Faktor-Authentifizierung (MFA) durch. Im Verlauf der Wartung werden die Datenbanken für insgesamt etwa 15 Minuten nicht zur Verfügung stehen.

Während dieses Zeitraums sind keine neuen Anmeldungen an Services mit RWTH Single Sign-On möglich. Bereits bestehende Sitzungen bleiben jedoch bestehen und sind von der Wartung nicht betroffen.

To resolve observed slow performance, all CLAIX-2025 nodes are under temporary maintenance during performance tuning and benchmarks. We will open the cluster again for the pilot users afterwards.

Due to maintenance work and debugging, copy23-2 is unavailable at the moment. Please use copy23-1 in the meantime.

The CLAIX-2025 cluster must be shut-down due to maintenance work at the CDU.

The "DGUV certification" measurements are also conducted; the maintenance needs to be extended for that purpose.

The CDU's faulty pump was replaced. The DGUV measurements are still pending due to technical issues.

Thde DGUV testing is now in progress.

The DGUV tests are completed, the cluster will be powered-on shortly.

CLAIX-2025 is under temporary maintenance to fix remaining issues in the fabric. Prospectively, the test operation can be resumed thereafter.

The fabrice issuese could be resolved last week. However, we can still encounter issues that need to be resolved at short hand and can lead to a temporary unavailability.
All running jobs will be affected.

Due to new issues, the nodes need to be powercycled. All running jobs will fail and need to be re-submitted.

All nodes were powercycled. The manufacturer is working on debugging the issues.

The fabric once again got caught in an unclean state. The fabric must be rebooted again to solve the issues. All running jobs will be affected.

The fabric switches will receive an updated firmware intended to resolve fabric issues observed previously.

The Fabric is still free of the previously observed issues.

Due to an uresolved security issue, we have disabled CIFS capabilities temporarily on all systems.