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


Young PhD day

Brigitte Yzel |  19 February 2020

Cerfacs organizes its 5th edition of the Cerfacs Doctoral Students Day on Monday, May 11, 2020. This day will be an opportunity for each doctoral student to present his or her research subject in front of an audience of Cerfacs researchers but also representatives of our industrial and academic partners, as well as selected external guests. Great novelty this year, 10 students have the privilege to participate in a specific training course such as "My thesis in 180 seconds", in order to present their research topic in French and in simple terms. The day will end with the selection of the : best poster, and the best MT180 presentation.Read more

A researcher of CERFACS guest during the France Culture radio show « La méthode scientifique » this week

superadmin |  20 January 2020

Mélanie Rochoux,  a researcher at Cerfacs working on wildfire spread modeling at the interface between CFD simulations and data science, is invited to the France Culture radio show « La méthode scientifique » next Wednesday to talk about megafires. Who are they? How are they formed? What are their impacts? How science can provide insights? The radio show is on Wednesday, January 22nd at 4:00 pm on the France Culture's channel.Read more