Posts by HPC Team

VSC User Survey

The Flemish Supercomputing Centre (VSC) is again carrying out a short user survey. Please take some time to participate in it and give your feedback about our services.

Read more ...


Workflow Managers for HPC on November 25, 2024

On November 25 2024, the ICTS of KU Leuven organize a lunchbox session about workflow managers for HPC. The session will be hybrid (physical and online participation).

Read more ...


05/11/2024: HPC Introduction Training

We are pleased to announce our next on-site HPC introduction training session, in cooperation with the Vlaams Supercomputer Centrum (VSC).

Read more ...


04/11/2024: Linux Introduction Training

We are pleased to announce our next on-site Linux introduction training session, in cooperation with the Vlaams Supercomputer Centrum (VSC).

Read more ...


VSC Users Day 22 October 2024

The Flemish Supercomputer Center is delighted to invite you to the upcoming VSC Users Day 2024, taking place at the Research Foundation Flanders (FWO), Hoek 38, Brussels.

Read more ...


New Anansi cluster for notebooks and test/debug jobs

We are happy to announce the immediate availability of a new cluster designed for interactive use (i.e. notebooks) and short jobs for testing and debugging purposes. The name of this new cluster is Anansi.

Read more ...


Visual Studio Code now available

We are happy to announce that Visual Studio Code (VS Code) is now available through our notebook platform. This version of VS Code runs directly on the hardware of the HPC cluster and can be used from your browser.

Read more ...


Hydra OS upgrade

On Wednesday, June 26, at 06:00, we will upgrade the login nodes to Rocky Linux 8.10. During this upgrade, Hydra will be unavailable for approximately 30 minutes, but running jobs will not be impacted. At 08:00, we will also upgrade the Hydra gateway. During this time, internet access in Hydra will be unavailable; however, the login nodes will remain accessible and running jobs will not be impacted unless they require internet access.

Read more ...


Removal of broadwell nodes from Hydra

The broadwell partition will be removed from Hydra on Sunday 16 of June at midnight. Only jobs that can finish before that date will be able to run on the broadwell partition.

Read more ...


Notebook platform environments on 2023a

We are happy to announce the immediate release of updated Jupyter environments on our notebook platform with the 2023a software toolchains.

Read more ...


Hydra Overview 2023

Year 2023 of the SDC team was marked by the award of the new Flemish Tier-1 supercomputer, which will be managed by us and hosted by VUB in the Green Energy Park. Our commitment with the rest of our services stays unchanged and now it is time to look at the state of the Hydra cluster, VUB’s Tier-2 HPC infrastructure. 2023 was an eventful year for Hydra and we have collected some statistics on the usage of the cluster by our users.

../../../_images/xdmod_CPU_Usage_Hydra_2023.png

Read more ...


Hydra system upgrade with brand new nodes

We are very pleased to announce the ready availability of 20 new nodes in Hydra with last-generation CPUs and a larger memory and cache per core than usual. Alongside the addition of these new nodes, we are also upgrading the operating system of rest of the cluster, which will require a planned reboot of the login nodes on Friday 26/4 at 06:00 (CEST) rendering the cluster inaccessible for a maximum of 15 minutes. Queued and running jobs will not be disrupted.

../../../_images/hpc-nodes-zen4.jpg

Read more ...


Planned internet interruptions on 6 April 2024

As announced on WeAreVUB Staff, on Saturday April 6th, the VUB network team will perform network updates on the VUB campus, which will impact any internet connection between VUB and the outside world.

Read more ...


Softening environment of Julia modules

We improved how we handle installations of Julia and Julia packages in Hydra. From now on, software modules in the cluster providing a base installation of Julia or any Julia package will not lock the working environment in any way upon load. This translates to the following features:

Read more ...


Your OneDrive in VUB can now be used from Globus

We are happy to announce that it is now possible to connect your OneDrive storage (including SharePoint) in your VUB account to the Globus network. This provides a convenient method to move your data between OneDrive and the storage on all VSC clusters, as well as to any other computer you are currently using in Globus.

Read more ...


Hydra scratch flash storage upgrade part 2 on 10 January 2024

On 10 January 2024 between 9:00-15:00, we will finalize the flash storage extension of Hydra’s scratch filesystem. During the upgrade, we will stop the scheduler to avoid putting load on the storage, and the performance of the scratch will be decreased. Running jobs will continue to run, and jobs in queue will remain queued.

Read more ...


Organization of Python, Perl and R packages in bundles

The organization of Python, Perl and R packages in Hydra is changing with the introduction of the 2023a toolchains. The base software module for each of these languages now provides a basic installation with the core features of the language plus any tools needed to build and install your own software on top of it. Extra packages are delivered in bundle modules or with their own specific modules.

Read more ...


Hydra scratch flash storage upgrade on 19 December 2023

The scheduler is again running, jobs are starting again. Unfortunately, we’ve not been able to complete the flash storage upgrade as some necessary hardware components are missing. We’ll announce another upgrade moment once all hardware is available.

Read more ...


Hydra upgrade 27-28 November finished

Hydra has gained a major system upgrade, a brand new scratch storage, extra compute nodes, and a new GPU cluster for interactive workflows.

../../../_images/hpc-cables-02.jpg

Read more ...


VSC User Survey

The Flemish Supercomputing Centre (VSC) is carrying out a short user survey. Please take some time to participate in it and give your feedback about our services: https://uhasselt.qualtrics.com/jfe/form/SV_e8rTPE6iYFAZ0Bo

Read more ...


Big upgrade for Hydra on 27-28 November 2023

We are happy to announce a big upgrade to our beloved tier-2 HPC cluster in VUB. On Monday, November 27th 2023 at 03:00 (CET), Hydra will be shut down for 48 hours to apply a major system upgrade, renew the scratch storage and add some extra compute nodes.

../../../_images/hpc-cables-01.jpg

Read more ...


Belgian LUMI user day

Join us in Brussels on November 6th, 2023, starting at 10:00 (CEST), for the Belgian LUMI user day.

Read more ...


Job scheduler outage in Hydra

On Tuesday, October 10th at around 17:30 (CEST), there was an outage of the Slurm scheduler in Hydra. Please check the output of your jobs carefully if it was in queue or running between October 10th at 17:00 CEST and October 11th at 09:00 CEST.

Read more ...


31/10/2023: HPC Intro Training Session

We are pleased to announce our next on-site HPC training session, in cooperation with the Vlaams Supercomputer Centrum (VSC).

Read more ...


30/10/2023: Linux Training Session

We are pleased to announce our next on-site Linux training session, in cooperation with the Vlaams Supercomputer Centrum (VSC).

Read more ...


24/10/2023: VSC Users Day 2023

We are pleased to announce the VSC Users Day 2023. The theme of the day: how to optimize your workflows for maximum HPC performance. This day is all about you: inspiring talks, lightning talks, and the unique opportunity to meet your fellow VSC HPC users.

Read more ...


License server upgrade

On Wednesday 23 August 2023 at 09:00 the license server for licensed software in Hydra will be down for upgrades. The operation is expected to take ~30 minutes. Affected software: MATLAB, Gurobi, Mathematica, Q-Chem, QuantumATK.

Read more ...


Reboot of Hydra login nodes

The login nodes of VUB’s Tier-2 cluster Hydra will be rebooted today (July 26th, 2023) at 22:00 CEST.

Read more ...


Network outage at VUB main campus

16:30 The network outage in VUB main campus is resolved. Access to both the Hydra HPC cluster and the Pixiu object storage has been reestablished.

Read more ...


Scheduled maintenance of HPC notebook platform

The notebook platform at notebooks.hpc.vub.be will be offline for maintenance on July 4th at 10:00 (CEST). This operation will last 30 minutes and all connections to existing lab sessions will be interrupted.

Read more ...


Tier-1 Data launch event

On 9 May 12:00-13:30, the VSC is officially opening the Tier-1 Data component infrastructure. Register to participate in the online event: https://www.vscentrum.be/post/tier-1-data-launch-event

Read more ...


New web portal for notebooks on the HPC

All PhD students and staff of VUB can now access our High-Performance Computing (HPC) infrastructure from a web browser. This new interface allows managing and running computational notebooks directly on our Tier-2 cluster (Hydra).

../../../_images/notebook-01.jpg

Read more ...


Legacy software change

On 27 March 2023, we’ve made a change in Hydra impacting only very old software modules.

Read more ...


Extra Ampere GPUs in Hydra

We are happy to announce the immediate availability of 2 more GPU nodes in Hydra adding 4 new Nvidia A100 GPUs to the cluster. These new nodes are joining the ampere_gpu partition and share the same CPU, memory and GPU configuration with the other nodes in this partition.

Read more ...


Documentation website refresh

We completed an update of the machinery running this documentation website that brings a refreshed look-and-feel and some quality-of-life improvements.

Read more ...


New notebook platform pilot

We are very pleased to announce the beginning of the second pilot phase of the Notebook platform of VUB-HPC.

Read more ...


New command prompt in Hydra

We have updated the default command prompt in Hydra with a more informative and better looking one.

../../../_images/new_hydra_prompt.png

Read more ...


LUMI user course

On February 14-17 2023, the LUMI HPE Centre of Excellence (HPE CoE), AMD and the LUMI User Support Team organize a general LUMI course.

Read more ...


Hydra login nodes reboot

On Wednesday 23 November 2022 around 18:00 we’ll reboot the Hydra login nodes.

Read more ...


LUMI user training

On November 23 and 24 2022, HPE Center of Excellence and the LUMI User Support Team organize a hybrid training (Brussels & online) titled “Detailed introduction to the LUMI-C environment and architecture”. Information about the event, agenda, venue, travel and accommodation can be found here: https://www.lumi-supercomputer.eu/events/detailed-introduction-to-the-lumi-c-environment-and-architecture/.

Read more ...


Data snapshots of the scratch in Hydra

We are pleased to announce the immediate availability of data snapshots for the shared scratch storage of Hydra. Data snapshots save the state of your files and folders in the past, allowing to recover lost data from your account.

Read more ...


Bug fixes for GCC and OpenBLAS

On Monday October 24th 2022 we’ve reinstalled two key components in the foss/2021b and foss/2022a toolchains to fix two important bugs.

Read more ...


2022-fall on-site Linux Training Session

We are pleased to announce our next on-site Linux training session, in cooperation with the Vlaams Supercomputer Centrum (VSC).

Read more ...


2022-fall on-site HPC Training Session

We are pleased to announce our next on-site HPC training session, in cooperation with the Vlaams Supercomputer Centrum (VSC).

Read more ...


VSC Lunch Session on OpenFOAM

On October 4th 2022, VSC is organizing a lunch session on the topic of “CFD meets HPC” (OpenFOAM).

Read more ...


New Globus endpoint for Hydra

We have a new Globus endpoint to access the storage of Hydra: VSC VUB Hydra. The old endpoint has been removed.

Read more ...


Hydra storage down

13:00 The issues with the storage have been solved. Login to Hydra and all other VSC clusters is back to normal. Please check all jobs that were running when the storage issues started for errors, and resubmit if necessary.

Read more ...


More Ampere GPUs in Hydra

We are happy to announce the immediate availability of 2 more GPU nodes in Hydra adding 4 new Nvidia A100 GPUs to the cluster. These new nodes are joining the ampere_gpu partition and share the same CPU, memory and GPU configuration with the other nodes in this partition.

Read more ...


Job monitoring and checkpoints

We have updated the documentation with new information on job monitoring, restarting jobs from checkpoints and managing data between VSC_DATA and VSC_SCRATCH in your jobs.

Read more ...


External network connection cut

23:00 The issues with the network have been solved and the connection of Hydra to external systems is back to normal.

Read more ...


Scheduled maintenance for Hydra in July

15:00 All maintenance tasks have been completed ahead of time and the cluster is back online. The job queue is resumed and all users can now log in and submit new jobs.

../../../_images/hpc-cables-01.jpg

Read more ...


Quota data synchronisation is now working again

Since the move of Hydra to the Pleinlaan campus, the synchronisation of quota usage to the VSC accountpage was not working. We have now been able to fix it.

Read more ...


Slow network connection to external systems

10:00 The issues with the network have been solved and the connection of Hydra to external systems is back to full speed.

Read more ...


VSC Users Day 2022

The annual VSC Users Day is back! After two years of online gatherings, VSC Users Day 2022 will be live in Ghent on June 21st, 2022.

Read more ...


Hydra-VSC network failure

14:30 The firewall has been repaired, and the connections between Hydra and the other VSC clusters are again working.

Read more ...


Irregular low performance of Hydra’s new storage

16:00 We have pinned this issue down to a specific configuration of the login nodes. Today, April 21st, at 21:00 (CEST) we will apply an urgent fix to the login nodes that will increase the filesystem perfomance of VSC_HOME and VSC_DATA back to normal levels. The login nodes will be rebooted during the process and they will be unavailable for 10 min.

Read more ...


Hydra move to VUB Etterbeek campus completed

We are happy to announce that the move of Hydra to the new data center of VUB in Etterbeek campus is complete. The cluster is now back open to VSC users.

../../../_images/hpc-cables-02.jpg

Read more ...


Kickoff of operation to move Hydra into campus

The start of the operation to move the Hydra cluster to VUB Etterbeek campus is upon us. Hydra will be closed to access from Monday, April 11th at 00:00 (CEST). The move is planned to last 1 week. We will continue to be reachable at hpc@vub.be and we will communicate the progress of the move on this post.

../../../_images/hpc-cables-01.jpg

Read more ...


User survey 2022

We have published the results of our yearly user survey, conducted in February 2022. Feedback from users’ experiences in Hydra adds valuable insight into their needs, what works well, and what needs further improvement.

../../../_images/survey-results-17.png

Read more ...


Hydra power cut

We’ve managed to get Hydra back to normal without data loss. The scheduler is running again and the login nodes are open. We’ve requeued all jobs that were running at the time of the power cut.

Read more ...


Hydra moves to VUB Etterbeek campus

Hydra will very soon move from ULB Solbosch campus to the recently upgraded VUB data center on the Etterbeek campus. This change will bring improved power supply, cooling and security measures to our HPC cluster. The move is scheduled in the week of April 11-15.

Read more ...


Multiple software packages updated in Hydra

The HPC team has been hard at work in the past month updating and testing many of the major software packages in Hydra. We invite all users to check these updates which include minor revisions of exiting versions with bug fixes and major new releases:

Read more ...


VUB-HPC user survey 2022

Please take some time (~10 minutes) to fill out the short user survey at https://hpc.vub.be/survey2022

Read more ...


VSC/CÉCI Workshop on Managing Workflows in HPC

On 15 and 16 February, VSC and CÉCI are organizing a free online 2-day workshop on the topic of managing workflows on HPC clusters.

Read more ...


GAMESS-US v2021-R2 available in Hydra

The most recent release of GAMESS-US with version 2021-R2-patch1 is now installed in Hydra.

Read more ...


Survey about trainings

VUB is participating in two big EU projects under the EuroHPC umbrella, the LUMI supercomputer project and the EuroCC project. LUMI will give you access to a new supercomputer infrastructure with large amounts of compute/storage/cloud resources (you will hear more about this soon), while EuroCC aims to foster the use of HPC in its broadest sense.

Read more ...


Tier-1 Info Session cutoff 1 2022

On 14 January 2022 at 12:30-13:30 VSC will organize an online Info Session on writing a Tier-1 project.

Read more ...


New GPU nodes in Hydra

We’re happy to announce that 6 new GPU nodes have been added to Hydra. They are equipped with the latest generation of NVIDIA GPUs: the Ampere A100.

Read more ...


AlphaFold 2.1.1 available in Hydra

We are pleased to announce the availability of AlphaFold v2.1.1 in Hydra. This recent release of AlphaFold has been installed for our top of the line Nvidia A100 GPUs with 40 GB of memory.

Read more ...


System update in Hydra

Warning We are carrying out a routine update of the operating system in Hydra. The nodes will be progressively updated without impacting running jobs, but queue times during the roll out might be longer.

Read more ...


2021-fall on-premise Linux Training Session

We are pleased to announce our next on-premise Linux training session, in cooperation with the Vlaams Supercomputer Centrum (VSC).

Read more ...


2021-fall on-premise HPC Training Session

We are pleased to announce our next on-premise HPC training session, in cooperation with the Vlaams Supercomputer Centrum (VSC).

Read more ...


Slurm Q&A Sessions

We are pleased to announce the Q&A sessions for Slurm from the VUB-HPC team:

Read more ...


Migration of Hydra to Slurm

The HPC team is proud to announce one of the biggest improvements for Hydra in recent years and certainly one of the most impactful for its users. Hydra is replacing its job scheduler for the Slurm Workload Manager.

Read more ...


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.

Read more ...


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.

Read more ...


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.

Read more ...


Migration of Globus accounts

We are very soon going to migrate all VSC accounts from the old vub.ac.be domain to vub.be. This change impacts users that have already used Globus services. Data access in Globus will not be affected, but if you want to keep your existing bookmarks and personal endpoints in Globus, you need to take action as soon as possible.

Read more ...


Urgent system update in Hydra

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

Read more ...


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:

Read more ...


Reboot of scheduler

Reboot done, all is back to normal.

Read more ...


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.

Read more ...


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.

Read more ...


Rolling system updates

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

Read more ...


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.

../../../_images/survey-results-1.png

Read more ...


OneDrive Client in Hydra

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

Read more ...


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!

Read more ...


2021-winter Online HPC Training Session

We are pleased to announce our next online HPC training session, in collaboration with the Vlaams Supercomputer Centrum (VSC).

Read more ...


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).

Read more ...


2021-winter Online Linux Training Session

We are pleased to announce our next online Linux training session, in collaboration with the Vlaams Supercomputer Centrum (VSC).

Read more ...


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.

Read more ...


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)

Read more ...


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).

Read more ...


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).

Read more ...


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.

Read more ...


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.

Read more ...


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.

Read more ...


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.

Read more ...


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.

Read more ...


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.

Read more ...


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:

Read more ...


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:

Read more ...


Hydra network maintenance scheduled on 20/04

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

Read more ...


Free Massive Online Open Courses (MOOCs)

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

Read more ...


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.

Read more ...


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.

Read more ...


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.

Read more ...


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.

Read more ...


Hydra unexpected network disconnection

The queue is back to normal operation.

Read more ...


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.

Read more ...


Fixed node crashes caused by MPI jobs

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

Read more ...