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VSC Lunch Session on A.I.

On October 7th, VSC is launching its first Lunch Session on artificial intelligence, i.e. the ability of a machine to display human-like capabilities such as reasoning, learning, planning and creativity.

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Update of the MPI stack in Hydra

The job scheduler in Hydra will be put on pause on Thursday, 16th September from 20:00 to 22:00. We will perform minor updates to the MPI stack in foss and intel toolchains. Running jobs will not be affected and users will be able to continue submitting jobs to the queue during the pause.

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New documentation for SRA-Toolkit

We have added a section for SRA-Toolkit to our documentation. This new documentation extends the list of instructions for specific software, which already covers 14 different applications.

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Urgent system update in Hydra

Login nodes updated successfully. The system update for the rest of the nodes continues as planned.

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TensorFlow 2.5.0 is available in Hydra

The last stable version of TensorFlow is now installed in Hydra. You can load TensorFlow v2.5.0 with the following modules:

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Reboot of scheduler

Reboot done, all is back to normal.

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ORCA 5.0.0 is available in Hydra

The recent major release of ORCA version 5.0.0 is now installed in Hydra. You can load it with the module ORCA/5.0.0-gompi-2021a.

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CSC Autumn courses for LUMI

The national supercomputer centre of Finland (CSC) in collaboration with PRACE is planning a series of courses in Autumn to teach the necessary development skills for the future users of the upcoming LUMI supercomputer. The initial courses are mainly oriented to programmers, as LUMI is first and foremost a machine to explore exascale technologies and hence new software. Nonetheless, there will also be a course program for non-developer users once LUMI becomes online starting early next year.

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Rolling system updates

Warning On Tuesday June 15 at 20:00 the login nodes will be unavailable for 30 minutes.

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User survey 2021

We have published the results of our yearly user survey, conducted in February 2021. Feedback from users’ experiences in Hydra adds valuable insight into their needs, what works well, and what needs further improvement.

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OneDrive Client in Hydra

We have improved the recommended usage of the OneDrive client in Hydra. Check the FAQ in the link below.

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VSC Tier-1 Cloud Launch Event

On May 20th 2021, VSC is launching its Tier-1 Cloud component and it’s a pleasure to invite you to this event!

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New upcoming online trainings (Winter 2021)

The HPC team is pleased to announce that our next online training sessions on Linux and HPC will be held the 25-26 February 2021. These trainings are in collaboration with the Vlaams Supercomputer Centrum (VSC) and focus on young and/or early stage researchers (Doctoral students, Master thesis students).

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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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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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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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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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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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