Cerfacs Enter the world of high performance ...



  • T. VANDAMMESimulation-inversion des diagraphies. Ph.D. dissertation, 12 november 2018.
    • Jury : S. Gratton, M-L. Doan, L. Debreu, F. Henry, G. Debenest, J. Monnier, E. Caroli






  • P. SALAS : Physical and numerical aspects of thermoacoustic instabilities in annular combustion chambers. Ph.D. dissertation,  May 2015. vidéo





















  • M. AhmadnasabHomotopic Deviation theory: A qualitative study. Ph.D. dissertation, Université Toulouse 1, October 2007.
    • Jury: J. Fleckinger, M. B. van Gijzen, S. Gaubert, F. Chaitin-Chatelin, I.S. Duff, J. Giacomoni, E. Traviesas-Cassan, J.-C. Yakoubsohn









  • C. Vömel: Contributions to research in high performance scientific computing for sparse matrices. Ph.D. dissertation, INPT, March 2003. TH/PA/03/26
    • Keywords: High performance computing, sparse linear systems, MUMPS, multifrontal Gaussian elimination, distributed memory code, dynamic task scheduling, sparse data structures, programming standard, Sparse BLAS, reference implementation, matrix norm, condition number, incremental estimators
    • Jury: E. Ng, J. Roman, P. Amestoy, M. Arioli, I. S. Duff, and A. Pothen


  • J. Langou: Iterative methods for solving linear systems with multiple right hand sides. Ph.D. dissertation, INSA Toulouse, June 2003. TH/PA/03/24
    • Keywords: linear systems, Krylov methods, GMRES, multiple right-hand sides, Gram-Schmidt orthogonalization, modern scientific software, parallel distributed computers, scientific computing, large scale numerical simulation in electromagnetism
    • Jury: G. Alléon, A. Bjorck, I.S. Duff, L. Giraud, G. Meurant, C.C. Paige, and Y. Saad






  • D. Orban: Méthodes de points intérieurs pour l’optimisation non-linéaire. Ph.D. Thesis, FUNDP/INPT, May 2001. TH/PA/01/09
    • Keywords: Smooth nonlinear optimization, interior-point methods, speed of convergence, degenerate problems, testing environment
    • Jury: Ph. L. Toint, M. Daydé, A. Sartenaer, I. S. Duff, J. Noailles, S. J. Wright, and J. Henrard



  • A. N. Zaoui: Deux Contributions au Calcul Scientifique I-Sur la convergence de la méthode des Itérations Simultanées couplée à l’algorithme d’Arnoldi itératif II-Autour du Calcul Hypercomplexe. Ph.D. dissertation, Université Toulouse I, December 2000. TH/PA/00/78


  • A. Bouras: Contrôle de convergence des solveurs emboités pour le calcul de valeurs propres avec inversion. Ph.D. dissertation, Université Toulouse I, Septembre 2000. TH/PA/00/77
    • Jury: J. Flckinger, M. Ahuès (rapporteur), P. Spitéri (rapporteur), F. Chaitin-Chatelin, and R. Beauwens ans J.-C. Bergès


  • E. Traviesas: Sur le déploiement du champ spectral d’une matrice. Ph.D. dissertation, Université Toulouse I, May 2000. TH/PA/00/30
    • Keywords: Normwise and Homotopic perturbations, backward error and pseudospectrum, Arnoldi and GMRES methods, eigenvalue problem and linear system
    • Jury: J. Fléckinger, P. Charrier (rapporteur), F. Dias D’almeida (rapporteur), F. Chaitin-Chatelin, I. S. Duff, A. Ilahi, and B. N. Parlett



  • A. Ilahi: Validation du calcul sur ordinateur: application de la théorie des singularités algébriques. Ph.D. dissertation, Université Toulouse I, June 1998. TH/PA/98/31
  • S. Gratton: Outils théoriques d’analyse du calcul à précision finie. Ph.D. dissertation, Institut National Polytechnique de Toulouse, June 1998. TH/PA/98/30
  • A. Harrabi: Pseudospectres d’opérateurs intégraux et différentiels. Application à la Physique mathématique. Ph.D. dissertation, Université Toulouse I, May 1998. TH/PA/98/29





  • V. Toumazou: Portraits spectraux de matrices : un outil d’analyse de la stabilité. PhD thesis, Université Henri Poincaré, Nancy I, 1996. TH/PA/96/46
    • Jury: M. Lalanne, F. Chaitin-Chatelin (rapporteur), B. Philippe (rapporteur), J.-C. Dunyach, V. Frayssé, N. Higham, and M. Gueury





  • T. Braconnier: Sur le calcul de valeurs propres en précision finie. Ph. D. dissertation, Université R. Poincaré, Nancy I, May 1994. TH/PA/94/24



  • C. Puglisi: QR factorization of large sparse overdetermined and square matrices using the multifrontal method in a multiprocessor environment. PhD thesis, CERFACS, Toulouse, France, 1993. TH/PA/93/33
    • Jury: M. Arioli, ø A. Bjorck, M.J. Daydé, I.S. Duff, J. Noailles, and B. Philippe


  • S. Godet-Thobie: Valeurs propres de matrices fortement non normales en grande dimension. PhD thesis, CERFACS, Toulouse, France, 1993. TH/PA/93/06



  • V. Frayssé: Sur la fiabilité des calculs sur ordinateur. PhD thesis, CERFACS, Toulouse, France, 1992. TH/PA/92/11
  • D. Ruiz: Solution of large sparse unsymmetric linear systems with a block iterative method in a multiprocessor environment. PhD thesis, CERFACS, Toulouse, France, 1992. TH/PA/92/06



  • Y.-H. De Roeck: Résolution sur ordinateurs multi-processeurs de problèmes d’élasticité par décomposition de domaines. PhD thesis, CERFACS, Toulouse, France, 1991. TH/PA/91/04
  • P. R. Amestoy: Factorisation de grandes matrices creuses non symétriques basée sur une méthode multifrontale dans un environnement multiprocesseur. PhD thesis, CERFACS, Toulouse, France, 1991. TH/PA/91/03


67 climate modelling groups use OASIS3-MCT to assemble more than 80 coupled applications

superadmin |  10 September 2019

OASIS3-MCT is a coupler of codes developed at Cerfacs and used around the world, mainly for climate modelling applications. Our last survey confirms that OASIS3-MCT is used by 67 modelling groups to assemble more than 80 different coupled applications over the 5 continents. These applications include global or regional configurations of ocean and atmosphere models but also sea ice, sea level, wave, ocean biogeochemistry, land, vegetation, river routing, hydrological and atmospheric chemistry models. OASIS3-MCT is used in 5 of the 7 European Earth System Models participating to the 6th Coupled Model Intercomparison Project (CMIP6) that produces the climate simulations forming the basis of the next report of the Intergovernmental Panel on Climate Change (IPCC)”Read more

Sparse Days Meeting 2019 at Cerfacs, Toulouse

Brigitte Yzel |  12 May 2019

The annual Sparse Days meeting will be held at CERFACS in Toulouse on 11th and 12th July 2019. Registration for the Sparse Days is free but we ask people who are coming to register as soon as possible although the deadline is June 14th. Please complete the registration form (deadline : June 14th) indicating whether you want to give a talk and whether you wish to attend the conference dinner. Although an emphasis will be on parallel aspects, any talk that has an association with sparsity is welcome.Read more