Friday, 23 August 2019

HERCULES2 installed at UNamur

The HPC cluster Hercules2 is now installed and available for use. It has a total of 1536 cores spread among 30 new nodes with AMD Epyc processors and 32 nodes with Sandy Bridge Intel Xeons which were kept from its predecesor Hercules.

With the new nodes going from 256 GB up to 2 TB of RAM, it is meant to take the place as the high memory CÉCI cluster. If you have large memory jobs to run, try it!

Tuesday, 23 April 2019

DRAGON2 installed at UMons

A new CÉCI cluster Dragon2 is now installed and operational at UMons. This is the second CÉCI cluster to be deployed as part of the renewal process which started last year.

It has a total of 592 cores of the latest generation SkyLakes Intel Xeon processors and there are two special nodes having each 2 high-end NVidia Tesla V100 GPUs.

Tuesday, 02 April 2019

11th CÉCI Scientific Meeting

The next CÉCI scientific day will take place on April 25th at ULB.
Program details here.

Monday, 04 June 2018

LEMAITRE3 installed at UCL

Lemaitre3 is now operational and replaces Lemaitre2, which will be decommissioned this Summer. It has 80 nodes (SkyLake 2.3 GHz, 24CPUs, 96GB RAM) interconnected with the Intel OmniPath Architecture and more than half a petabyte of scratch space.

Thursday, 03 May 2018

Survey on Big Data and Machine Learning needs

We are conducting a survey about current and future High Performance Data Analysis (HPDA) works & needs, covering BigData, DeepLearning, MachineLearning, AI & co. Research groups already active in those fields are our primary center of interest. However, those moving or intending to move into those fields are welcome to fill the survey too. Our objective is to identify concrete hardware and software requirements for the future CECI Vega2 cluster which will be oriented towards HTC (High Throughput Computing) and HPDA.

You are therefore cordially invited to follow this link and fill the survey.

Monday, 26 March 2018

10th CÉCI Scientific Meeting

The next CÉCI scientific day will take place on May 4th in Namur.
Details and registration here.

Friday, 16 March 2018

PRACE Call for Proposal

PRACE has issued the 17th call for Proposals. Deadline: 2nd May 2018, 10:00 CET; Stake: Single-year and Multi-year proposals starting 2nd October 2018; Resources: Joliot-Curie, Hazel Hen, JUWELS, Marconi, MareNostrum IV, Piz Daint and SuperMUC.

Let us know if you apply and participate!

Monday, 05 February 2018

Presentation by a CÉCI sysadmin at the FOSDEM'18 conference

UCL sysadmin Damien François gave a presentation at the latest FOSDEM'18 conference talking about the Open Source software stack powering UCL clusters.

A recording of the presentation is now available to see here.

Wednesday, 31 January 2018

PRACE Summer of HPC 2018

Applications are open to participate in the PRACE Summer of HPC Programme 2018. PRACE Summer of HPC is a PRACE outreach and training programme that offers summer placements at top HPC centres across Europe to late-stage undergraduates and early-stage postgraduate students. Up to twenty top applicants from across Europe will be selected to participate. The programme will run from 2 July to 31 August 2018.

Let us know if you apply and participate!

Saturday, 23 September 2017

A CECI user pictured in the ULiège news!

The ULiège website published a story (in French) about the work of Denis Baurain and his collaborators on the Tier-1 cluster Zenobe that lead to a publication in Nature Ecology & Evolution.

Tuesday, 01 August 2017

Ariel Lozano is the new CÉCI logisticien

We are happy to announce the hire of a new CECI logisticien: Ariel Lozano. Welcome Ariel!

Sunday, 02 April 2017

20 000 000 core-hours on a PRACE cluster allocated to two CÉCI users

UCL professors Gian-Marco Rignanese and Jean-Christophe Charlier have been granted 20 millions core-hours on Marconi KNL (CINECA, Italy). Congratulation to them!

Tuesday, 21 March 2017

Register for the Ninth CÉCI Scientific Meeting!

The ninth CÉCI scientific meeting day is organised in Louvain-la-Neuve on April 21st. More information and registration: see here.

Friday, 03 March 2017

The CÉCI common filesystem is ready

The CÉCI common filesystem is fully available on the 6 CÉCI clusters. For example, the partition /CECI/home/ is directly accessible from all the login and compute nodes on all the clusters. Make sure to try it out! More information here.

Wednesday, 14 September 2016

HPC event 2016: Registration is open

The October 10th 2016 HPC event organized by CENAERO, is open for registration. The presence of the Vice-President of the Government of Wallonia, Jean-Claude Marcourt, is confirmed. Take a look at the event program(in french). Attendance is free of charge, but registration is required

Tuesday, 02 August 2016

We tested for you: Belnet Filesender

Belnet offers a file transfer service that you can use to send large files over the internet to colleagues or collaborators. To use it, simply go to, choose your university, and enter your university identifier and password (the one that you typically use to access your emails or your university's intranet.) Then you simply have to choose the file, enter the recipient's email address, and your correspondent will recieve a link to your file that she can download. More information here.

Wednesday, 06 July 2016

HPC event. Save the date !

A HPC event is being prepared for October 10th 2016. The event is organized by CENAERO, the operator of Tier-1 supercomputer in Wallonia. The presence of the Vice-President of the Government of Wallonia, Jean-Claude Marcourt, is announced. More details on the content and the schedule will be communicated further. See more information (in French)

Tuesday, 14 June 2016

Visit of the Minister of Budget

The new data center dedicated to scientifc computing built in Louvain-la-Neuve has welcomed a visit of the European Investment Bank on June 14th. The group was led by the Minister of Budget of the Federation Wallonie-Bruxelles André Flahaut. He was accompanied by a representative of the F.R.S.-FNRS and a representative of the Minister of Higher Education. See more information here.

Tuesday, 24 May 2016

CÉCI sysadmins at Belnet event

Belnet is announcing their next Networking Conference to be held on Oct 25th in Brussels on their Twitter account using a picture from last year featuring CÉCI system administrators in the front row. See the tweet here.

Friday, 22 April 2016

Eighth CÉCI Scientific Meeting

The eighth CÉCI scientific meeting day was organised in Liège on April 22nd. Nine talks were scheduled to present HPC-related aspects of scientific research. See the program here.

Sunday, 29 November 2015

Upcoming conference "e-Infrastructures in Belgium"

The CÉCI co-organizes, in collaboration with Belspo, EWI, SPW, Belnet, and VSC, a conference dedicated to e-infrastructure (network, computing, storage) for scientific research on Monday 14th in Brussels. Registration is free but mandatory. More details here.

Thursday, 01 October 2015

PRACE Call for Proposal

PRACE has issued the 12th call for Proposals: ( deadline: 11th November 2015, 12:00 (noon) CET; stake: 1 year allocation starting: 14th March 2016 ; resources:Fermi and MareNostrum

Let us know if you respond and participate!

Friday, 14 August 2015

PRACE Call for Proposal

PRACE has issued a Call for Proposals for HPC Compute Resources from DECI-13 (Tier-1): deadline: 21th Sep 2015, 17:00 CEST ; stake: 1 year allocation starting: 18 Jan, 2016 ; resources: all Tier-1 machines.

Let us know if you respond and participate!

Sunday, 12 July 2015

1000th user account created!

On July 12th, the 1000th account was created. This is an important milestone for the CÉCI project! See more details here.

Thursday, 02 April 2015

Seventh CÉCI Scientific Meeting

The seventh CÉCI scientific meeting day is organised in Mons on April 24th. Eight talks are scheduled to present HPC-related aspects of scientific research. See the program here.

Friday, 20 March 2015

Juan Cabrera is the new CÉCI logisticien

The F.N.R.S. has accepted the hire of Juan Cabrera as Logisticien for the CÉCI. Welcome Juan!

Monday, 09 February 2015

PRACE Call for Proposal

PRACE has issued the 11th call for Proposals: ( deadline: 18th March 2015, 13:30 CET ; stake: 1 year allocation starting: 1st Sept, 2015 ; resources:Fermi and MareNostrum)

Let us know if you respond and participate!

Thursday, 15 January 2015

NIC4 upgraded at ULg

NIC4, the CÉCI cluster hosted at ULg, has been upgraded with 8 additional nodes, all with the same features as the previously existing ones. Slurm has furthermore been updated to version 14.03, now featuring among others job arrays.

Friday, 12 December 2014

Zenobe, the Walloon Tier-1 supercomputer is now available to all the CÉCI users

Zenobe features 342 compute nodes with two 12-cores Intel E5-2697 v2 processors at 2.7 GHz and 64 GB of RAM and 274 compute nodes with two 6-cores Intel X5675 processors at 3GHz and mainly 24 GB of RAM, interconnected with a fast non-blocking QDR Infiniband network. Zenobe is furthermore equiped with a fast 350 TB GPFS parallel filesystem.

See the FAQ for information on how to get access to Zenobe.

Monday, 03 March 2014

22,260,000 core-hours on PRACE Tier-0 clusters allocated to CÉCI users. Be the next one!

Jean-Christophe Charlier and Nicolas Leconte (UCL), and Samir Sid and Vincent Terrapon (ULg) have been allocated time on Tier-0 clusters, respectively in the context of the 8th Regular Call and for a preparatory access. Congratulation to them.

As the 9th Call for Proposal is now open, do not hesitate to apply.

Thursday, 27 February 2014

NIC4 installed at ULg

The sixth CECI cluster, NIC4 has entered production. It is installed at ULg. NIC4 features 120 compute nodes with two 8-cores Intel E5-2650 processors at 2.0 GHz and 64 GB of RAM (4 GB/core), interconnected with a QDR Infiniband network (2:1 blocking factor), and having exclusive access to a fast 144 TB FHGFS parallel filesystem. From today, you can access it with your CÉCI credentials.

Thursday, 21 November 2013

[French] Appel à communication: ComPAS'2014, Neuchatel, Suisse, 22-25 avril 2014

ComPAS est la Conférence d'informatique en Parallélisme, Architecture et Système, francophone, et orientée Jeunes Chercheurs. Depuis 2013, elle regroupe en une identité unique les trois précédentes conférences francophones RenPar (Rencontres francophones du Parallélisme), SympA (Symposium en Architectures nouvelles de machines) et CFSE (Conférence Française en Systèmes d'Exploitation). ComPAS'2014 aura lieu du 22 au 25 avril 2014 à Neuchâtel, en Suisse Romande.

See more information here.

Thursday, 03 October 2013

200.000 core-hours on PRACE Tier-0 clusters allocated to a CÉCI user

Yvan Notay and his team from ULB have been granted 100.000 core-hours on Juqueen, and 50.000 more on Hermit and Curie each, to test the scalability of their code AGMG, resulting from an application to a PRACE Preparatory Access call Type A. Congratulation to them!

Tuesday, 17 September 2013

Training sessions to start mid-October

The CISM and the CÉCI jointly offer, this year again, a complete training for super-computer users from a basic introduction to Linux to complex parallel computations with MPI. Registration is free but mandatory. More info on the training page.

Wednesday, 11 September 2013

VEGA installed at ULB

The HPC cluster 'Vega' is now installed at the Université libre de Bruxelles. Vega is primarily dedicated to many-cores jobs (each node has 64 cores) and to batches of many single-core jobs. It comprises 44 nodes, each with four AMD Opteron 6272, 256 GB of RAM and 250GB of local harddisk (yes, more RAM than disk space). Vega also has a fast 70TB GPFS global scratch space.

Wednesday, 04 September 2013

8th PRACE Regular Call for Proposals open

The 8th PRACE Regular Call for Proposals will be open from September 3rd, 2013 until October 15th, 2013, noon, 12:00 Brussels Time.

More info at

Sunday, 18 August 2013

Slurm update on Hercules, Lemaitre2 and Hmem

During the maintenance operations on Hercules, Lemaitre2 and Hmem earlier this Summer, Slurm was updated to version 2.6.0.

Interesting changes include:

  • Support for job arrays
  • Added support for job profiling (CPU, memory, power consumption, Lustre use and Infiniband use)
  • Much faster throughput for job step execution with --exclusive option
  • Advanced reservations with hostname and core counts now supports asymetric reservations

See more information here.

Sunday, 07 July 2013

HERCULES installed at UNamur

The HPC cluster 'Hercules' is available for use. Hercules is located at the University of Namur and operated by the 'Plateforme Technologique de Calcul Intensif' (PTCI). Hercules is primarily designed for users who need to run shared memory parallel jobs (OpenMP or Pthreads) or multiple resource-intensive sequential jobs. It comprises 32 Intel Sandy Bridge nodes, each with two 8-core processors and 64 or 128 GB of RAM. One partition is available with no time limit.

Sunday, 12 May 2013

PRACE Call for Proposal

PRACE has issued a Call for Proposals for DECI-11 (Tier-1): ( deadline: 10th June 2013, 12:00 CEST ; stake: 1 year allocation starting: 1st Nov, 2013 ; resources: all Tier-1 machines)

Let us know if you respond and participate!

Thursday, 28 March 2013

Fifth CÉCI Scientific Meeting program announced.

The program for the fifth CÉCI scientific meeting day on April the 19th is available here (pdf - 71K)

Do not forget to register by sending an email to !

Press Coverage

Tuesday, 08 May 2018

Dragon1 cluster featured in a Belnet article

The Dragon1 CÉCI cluster is highlighted in an interview from Belnet to Chantal Poiret, professor in Information and Communication Technology at the University of Mons.

Follow this link to read the complete note.

Tuesday, 21 January 2014

Media coverage of the Tier1 inauguration

The CÉCI has often been referred to in the press coverage of the inauguration of the Tier-1 Supercalculateur at Cenaero on Monday, January the 20th.

The following news bulletins excerpts feature members of the CÉCI being interviewed. They all date Jan 20th.

Some articles:

Thursday, 10 October 2013

CanalC news topic about UNamur and Hercules

Canal C's news bulletin from October 9 features UNamur's cluster Hercules.

See the video here.

Friday, 20 September 2013

La Libre article mentioning Hercules

La Libre has published an article entitled 'Les Belges bousculent l'icône Einstein' where the Hercules cluster is mentioned.

See the article here.

Sunday, 01 September 2013

InsideHPC article about Vega

InsideHPC and Scientific Computing World have released an article about Vega, the new CÉCI cluster installed at ULB. The article also mentions other CÉCI clusters.

See the article here or here.

Saturday, 22 June 2013

La Libre article mentioning the CÉCI

La Libre has published an article about supercomputers, featuring UNamur CÉCI members.

See the article here.

Monday, 22 April 2013

La Libre article about UNamur's cluster inauguration.

La Libre has a short article about the latest CÉCI scientific day, held in Namur on April 19th, 2013, where the new CÉCI cluster was inaugurated.

See the article here.

Tuesday, 01 May 2012

Article about CÉCI and CISM in 'La Quinzaine'

La Quinzaine, the internal magazine of UCLouvain, publishes an article about the CISM and the CÉCI in its May issue.

See the article here.

Friday, 10 February 2012

Second Datanews article about CÉCI this year

The latest issue of Datanews offers a one-page article about the CÉCI. Based on an interview with Thomas Keutgen, manager at the supercomputing centre of UCL, the article details the CÉCI initiative, organization and roadmap. The article highlights the fact that, by 2013, the CÉCI clusters should represent a total of 6000 to 7000 compute cores.

See the article here.

Friday, 27 January 2012

Datanews article about CÉCI

Datanews publishes an article about Lemaitre2, the new CÉCI cluster installed at UCL. The article, titled "L'UCL installe 14 Tflops", describes the new cluster and compares its features to the olders clusters from UCL. The article also brievely presents the CÉCI and its organisation.

See the article here.

Monday, 20 December 2010

Roundup for the year 2010

  • 22 November 2010 : Article in "La Libre Belgique" about the (lack of) funding of the F.R.S.-FNRS, citing the CÉCI as an example.

  • 17 November 2010 : Two mentions of the CÉCI agreement signature on the FNRS news.

  • 16 November 2010 : TV report by Canal Zoom about the signature of the CÉCI consoriumt agreement.

  • 12 November 2010 : Article in "Le Vif" about the creation of the CÉCI consortium.

Thursday, 31 December 2009

Roundup for the year 2009

  • 09 May 2009: Article in La Libre about the new supercomputer at ULB-VUB.
  • 11 March 2009: The new NIC supercomputer of the University of Liège is mentioned in the press (Le Soir, La Libre, Datanews, and RTC)