Cerfacs Enter the world of high performance ...

Cerfacs funded for the EoCoE-II European center of excellence

  11 October 2018

The European center of excellence EoCoE-II brings together 20 partners from 7 European countries around exascale computing for energy-oriented numerical models. As a follow-up to the proof-of-principle phase of EoCoE (energy-oriented center of excellence), EoCoE-II will build on its unique, established role at the crossroads of HPC and renewable energy to accelerate the adoption of production, storage and distribution of clean electricity. Involved in 2 work packages, Cerfacs will conduct research around scalable multigrid solvers for the gyrokinetic fusion code GyselaX on the one hand, and surrogate models for uncertainty quantification and data assimilation with 2D hydrodynamics solvers on the other hand.

Cerfacs funded by the EU for more than 1 MEuros thanks to the IS-ENES3 and ESiWACE2 projects

  4 October 2018

IS-ENES3 is the third phase of the distributed e-infrastructure of ENES (European Network for Earth System modelling), enabling the European climate modelling community to address the challenges of international intercomparison project CMIP6. IS-ENES3 will develop, document and deploy new and advanced models and tools, standards and services to deal with unprecedented data volumes and model complexity. The Centre of Excellence ESiWACE2 brings together 20 partners from 9 European countries and plans to further push Earth System Model technology towards execution on upcoming pre-exascale and exascale systems. These two projects will finance Cerfacs activities around code coupling, in particular the further development of the OASIS coupler, upstream technical developments for climate services (climate4impact portal) and for the Earth System Grid Federation (ESGF) ensuring the dissemination and analysis of model output and observational data.

New online training session on LBM

  10 September 2018

Our next online training session on LBM will take place in October. More information and registration on:    

New supercomputer opened at Cerfacs

  16 May 2018

Since the beginning of May 2018, a new supercomputer named Kraken has been setup to reinforce Cerfacs' simulation capabilities. With a peak performance of 315 Tflop / s this new computer provided by Lenovo is now available to all of Cerfacs' researchers in addition to the Nemo computer. The Kraken cluster includes 119 compute nodes, each of them with two Intel Xeon Gold 6140 processors (18 cores skylake processor at 2.3 Ghz) and 96 GB DDR4 memory. This “compute partition” is completed by 3 post-processing nodes with 384 GB memory with a Nvidia Tesla M60 and one node with 768 GB memory used for large mesh generation. The interconnection network is a non-blocking Intel Omnipath Network.  

Support activity on C3Sm interface system for combustion codes of CERFACS rated first by SAFRAN HELICOPTER ENGINES (SHE)

  18 April 2018

Support activity on C3Sm, a software developed by CERFACS to use combustion LES codes has been rated first by an independent evaluation within SHE. This underlines the common work of SHE and CERFACS. C3SM was rated 70/70, far above the average value obtained by other tools used at SHE and especially well above commercial CFD codes.

The Combustion Institute Selection Committee has selected Dr Bénédicte Cuenot to receive the honorific title of Fellow of the Combustion Institute in 2018.

  5 February 2018

Fellows of The Combustion Institute are members of the international combustion community recognized by their peers as distinguished for outstanding contributions to combustion, whether it be in research or in applications. Fellows are active participants in The Combustion Institute, as evidenced by the publishing of papers in CI affiliated journals, attendance at the International Symposia on Combustion, and/or attendance at CI Section meetings. See

Visit of Mrs Nadia Pellefigue

  29 January 2018

Cerfacs was very honored to welcome Mrs Nadia Pellefigue, Vice-President of the Occitanie region in charge of Economic Development, Research, Innovation and Higher Education.

One of the 18 laureates of “make our planet great again” program will join Cerfacs

  22 December 2017

Benjamin Sanderson (from the National Center of Atmospheric Research, Boulder, USA) has been selected as one of the 18 laureates of the priority research program « Make our planet great again » (  ),  launched under the auspices of Frédérique Vidal, Minister of Higher Education, Research and Innovation, and of Louis Schweitzer, General Commissioner for Investment.  He will soon join the CECI (Cerfacs/CNRS UMR5318) laboratory to work on his successful « Risks and Uncertainties under Climate Change » (RISSCi) project for the next five years.

Ph.D. Students’ Day : Thursday March 15th, 2018

  21 December 2017

Ph.D. Students' Day (JDD 2018) Thursday March 15th, 2018 9 am - 6 pm Cerfacs, Conference room JCA   The 2018 edition of the PhD Students' Day will take place on March 15, 2018, in the JCA conference room at Cerfacs. The participation of 1st and 2nd year PhD students is mandatory except in exceptional cases. The day will include oral presentations of the 1st and 2nd year students, as well as a poster session with a prize for the best poster given at the end of the day by our jury. Agenda : Registration deadline: January 5, 2018 Abstracts (title, abstract up to 10 lines and image): February 2, 2018 Posters: March 2, 2018 Slides: March 7, 2018 Participation in the event is free of charge. However, for logistical reasons, registration is mandatory for PhD students by filling in the form below. External persons wishing to attend this day can register directly by email to brigitte.yzel@cerfacs.fr   PROGRAM and ABSTRACTS Organising Committee:  Svenya CHRIPKO Victor ROUSSEAU Brigitte YZEL    

Invited communication to the BIDS'17 conference

  12 December 2017

During an invited communication to the « Big Data from Space 2017 » conference, CERFACS presented the stakes and the perspectives of its strategic axis "Data Driven Modeling" from the point of view of the valorization of satellite data. For more details, see the article: Abstract: CERFACS has a long-established record of excellence in environmental and industrial Computational Fluid Dynamics for complex flow simulation on high-resolution grid enhanced by continuous developments in numerical models and in High Performance Computing. Data Assimilation of satellite data for ocean, atmospheric chemistry or hydraulics modeling is also one of its strong expertise domains. Uncertainty Quantification has become a developing field based on ensemble approaches and model-reduction objectives. Based on these expertise domains, a new challenge for CERFACS is to develop a Data Driven Modeling axis combining Data Science, Uncertainty Quantification and Data Assimilation. Reference: O. Thual et al, The stakes and prospects of “Data Driven Modelling” at CERFACS, 2017 Conference on Big Data from Space (BIDS’17), November 30th 2017, Toulouse,

One Cerfacs’ proposal accepted in PRACE 15th call

  4 December 2017

This study focuses on Hall-effect thrusters, which were first invented in the 1960s. Although such systems have been extensively studied, the detailed physics of the magnetized plasmas in these thrusters is very complex and several plasma processes that have direct influence on the thruster performance and lifetime are still poorly understood. Therefore, the current design and development of Hall-effect Thrusters is still semi-empirical with long and expensive life qualification tests required. In the context of the ANR industrial chair POSEIDON (collaboration between LPP, CERFACS and SNECMA), a new numerical methodology is being developed to reduce the number of experimental tests in the develop cycle of future electric thrusters. The main goals of this PRACE project "UNPIC3D" are to better understand plasmas in realistic electric thruster designs, to develop a 3D numerical code for treating such problems, and to use this tool to improve the efficiency of existing products and in this way to provide the foundation for future thruster designs. 18 Mh have been attributed to UNPIC3D project on Curie in the frame of 15th PRACE call.