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Parallel Algorithms & sCientific sOftware Operational Perfomances (Algo-Coop)


The new ALGO-COOP team merges the former “Parallel Algorithms Team” and the “Scientific Software Operational Performance Team”. Our now combined expertise covers the fundamental topics in scientific computing from both mathematics and computer science. We work in numerical algorithms, linear algebra, exascale computing, software engineering, data driven computing, data assimilation, uncertainty quantification, adaptive mesh generation, parallel load balancing, as well as in the rapidly growing fields of machine learning and artificial intelligence. An important role of the ALGO-COOP team within CERFACS is to bridge from fundamental research questions to computational problems for real-life applications.




Main Industrial Partners : Airbus Group, CEPMMT, CNES, CNRM, EDF, IFPEN, METOFFICE, TOTAL

Academic and Industrial Partners : Argonne National Laboratory (Etats-Unis),  CNRS, INPT, INRIA, ISAE, Rutherford Appleton Laboratory (Angleterre), Université de Namur (Belgique), Université de Coimbra (Portugal)

Joint  Laboratory :  CERFACS-IRIT



Team members


Project Leader : Ulrich Rüde

Administrative assistant : Brigitte Yzel



Patrick Amestoy

– Mario Arioli

Alfredo Buttari

– Serge Gratton

Martin J. Kühn

Daniel Ruiz

Masha Sosonkina

Sébastien Tordeux

– Fahreddin Sükrü Torun

Jean Tshimanga-Ilunga

Yin Yang



NextSim General Assembly and TC meeting

CERFACS |  16 September 2021

The General Assembly and TC Meeting took place on 15-16 September 2021. CERFACS is involved in the NextSim project (). The primary objective is to increase the capabilities of Computational Fluid Dynamics tools on extreme-scale parallel computing platforms for aeronautical design. This project has received funding from the European High-Performance Computing Joint Undertaking (JU) under grant agreement N° 956104. The JU receives support from the European Union’s Horizon 2020 research and innovation programme and Spain, France, Germany. This project has received funding from the Agence Nationale de la Recherche (ANR) under grant agreement N° ANR-20-EHPC-0002-02. For more information, please visit Read more

Sophie Valcke from Cerfacs co-authored a new book on atmosphere-ocean modelling

CERFACS |  18 August 2021

new book "Atmosphere-Ocean Modelling - Couling and Couplers” by Prof. Carlos R Mechoso, Prof. Soon-Il An and Dr Sophie Valcke has just been published by World Scientific. The present book fills a void in the current literature by presenting a basic and yet rigorous treatment of how the models of the atmosphere and the ocean are put together into a coupled system. Details are available at  Abstract: Coupled atmosphere-ocean models are at the core of numerical climate models. There is an extraordinarily broad class of coupled atmosphere-ocean models ranging from sets of equations that can be solved analytically to highly detailed representations of Nature requiring the most advanced computers for execution. The models are applied to subjects including the conceptual understanding of Earth’s climate, predictions that support human activities in a variable climate, and projections aimed to prepare society for climate change. The present book fills a void in the current literature by presenting a basic and yet rigorous treatment of how the models of the atmosphere and the ocean are put together into a coupled system. The text of the book is divided into chapters organized according to complexity of the components that are coupled. Two full chapters are dedicated to current efforts on the development of generalist couplers and coupling methodologies all over the worldRead more