Posted in 2020

Hydra storage maintenance scheduled on 26/11

The maintenance on the storage is done and jobs are again running as normal. We are still busy with (automatically) updating all worker nodes. Until that is done, the queuing time will be slightly longer than normal.

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2020-fall Online HPC Training Session

The HPC team of the VUB-ULB Shared ICT Services Centre (SISC) is pleased to announce its second installment of online training sessions on Linux and HPC of this year, in collaboration with the Vlaams Supercomputer Centrum (VSC)

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New upcoming online trainings (Fall 2020)

The HPC team is pleased to announce our second installment of online training sessions on Linux and HPC of this year, in collaboration with the Vlaams Supercomputer Centrum (VSC), focusing on young and/or early stage researchers (Doctoral students, Master thesis students).

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2020-fall Online Linux Training Session

The HPC team of the VUB-ULB Shared ICT Services Centre (SISC) is pleased to announce its second installment of online training sessions on Linux and HPC of this year, in collaboration with the Vlaams Supercomputer Centrum (VSC).

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Hydra maintenance scheduled on 29/08

Due to maintenance work, it will not be possible to submit new jobs or view the status of submitted jobs on Saturday 29/8 between 20:00 and 23:00. Running jobs will not be impacted.

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Preventive measures for second heatwave

Warning Until next Friday (14th of August) IvyBridge nodes will be offline due to the current heatwave. All other nodes are online, including GPU nodes. Since the scope of this mesure is rather limited, the waiting time of jobs in the queue should not be affected.

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PRACE online training on Parallel Programming

From 9 to 12 June 2020, the Flemish Supercomputing Center (VSC, Belgium) and SURFsara (The Netherlands) are organizing this online course on parallel programming using OpenMP and MPI. See [ONLINE] Parallel Programming with OpenMP and MPI @ VSC Belgium & SURFsara for more information.

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Electricity works on the cooling system

From 2 to 3 June 2020, works on an electric board of the SISC cooling system will be conducted. The operations will require to stop the cooling system for short periods of time. The computing power of the HPC clusters Hydra and Vega will be reduced to a minimal level to avoid heat problems in the data center. Therefore, waiting time for jobs in the queue will be higher then normal.

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Hydra security hardening

Due to the recent wave of cyberattacks on HPC centers throughout Europe, the SISC HPC team will take security hardening measures on Hydra, in consultation with the VSC.

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Hydra storage maintenance scheduled on 18/05

There are a couple of hardware issues with the Hydra storage which we cannot safely fix while the cluster is running. We are going to shut down Hydra on Monday 18 May, starting at 09:00 to perform the needed repairs. We expect that we can resume normal operations by the late afternoon.

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2020-spring Online HPC Training Session

The HPC team of the VUB-ULB Shared ICT Services Centre (SISC) is pleased to announce its first online HPC training session:

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2020-spring Online Linux Training Session

The HPC team of the VUB-ULB Shared ICT Services Centre (SISC) is pleased to announce its first online HPC training session:

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Hydra network maintenance scheduled on 20/04

The network issues are fixed. Everything is back to normal.

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Free Massive Online Open Courses (MOOCs)

We’d like to advertise three free MOOCs organized by the Partnership for Advanced Computing in Europe (PRACE):

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Urgent reboot of Hydra login server

The login1 server has to be rebooted to apply critical updates. This will be done on Saturday at 20:00. You can use login2.hpc.vub.be as an alternative login server during the downtime.

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2020-spring HPC Training Session

Due to the coronavirus outbreak we are forced to cancel the HPC training session of 31 March 2020. We hope to schedule a new date later on this academic year, possibly online. We’ll keep you informed.

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2020-spring Linux Training Session

Due to the coronavirus outbreak we are forced to cancel the Linux training session of 30 March 2020. We hope to schedule a new date later on this academic year, possibly online. We’ll keep you informed.

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VSC COVID-19 Action

Researchers working on COVID-19 can get free compute time on the Tier 1 and all Tier 2s of the VSC.

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Hydra unexpected network disconnection

The queue is back to normal operation.

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New upcoming training sessions (Spring 2020)

The HPC team is pleased to announce a new series of training sessions, in collaboration with the Vlaams Supercomputer Centrum (VSC) and the Consortium des Équipements de Calcul Intensif (CECI), focusing on young and/or early stage researchers (Doctoral students, Master thesis students). Full-day hands-on sessions are organized for both Linux and HPC.

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Fixed node crashes caused by MPI jobs

We fixed an issue where a MPI job could crash an entire node.

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