Dr. Didier El Baz (HDR 1998)

Head and founder of the Distributed Computing and Asynchronism team (CDA)
room: E28
7, avenue du Colonel Roche
31077, Toulouse Cedex 4
tel: 33 5 61 33 63 03
fax: 33 5 61 33 64 11
E-mail address:

CNRS research scientist (LAAS-CNRS) since 1985.
Visiting scientist MIT (INRIA grant): march 1984-february 1985 (LIDS);
   MIT report P-1417 (SIAM J. on Control and Optimization 1987).
   Special Summer Program in Data Communication Networks (MIT, 1984).
NVIDIA Academic Partnership, October 2010.
NVIDIA Corporation support, July 2014.
Member of the Steering Committee of PDP since 2003.
Member IEEE, Euromicro, ROADEF.
H.D.R. INP Toulouse, 1998.
Dr. Eng. degree in Control Theory, 1984.
Eng. degree in Electrical Engineering 1981.

Recent projects:

  1. Coordinator of Project ANR CIS CIP, (EMD, IRIT-ENSEEIHT, LAAS-CNRS, MIS, LIFC).
  2. Partner of Project ANR: Smart-Blocks (Femto-ST, LAAS-CNRS, LIMMS).
  3. Partner of Project ANR PSIROB: Smart-Surface (Femto-ST, InESS, LAAS-CNRS, LIFC, LIMMS).
  4. NVIDIA Academic Partner, Octobre 2010.

Recent editorial activities:


    Multi-threads, Réseaux et Systèmes Répartis, Calculateurs Parallèles, Vol. 10 n. 3, 1998.
    Méthodes itératives de décomposition de domaines et communications en calcul parallèle, Réseaux et Systèmes Répartis, Calculateurs Parallèles, Vol. 10 n. 4, 1998.


    Organization of research:

      Cofounder of the Working Group Knapsack and Optimization, KS0, of ROADEF.


    University of Science and Technology, Beijing (China), Huansheng Ning.
    I.A.C.S., University of Wuppertal (Ger), Andreas Frommer.
    NICTA, University of Sidney (Aus), Guillaume Jourjon.
    L.I.D.S., M.I.T. (U.S.A.), Dimitri P. Bertsekas.
    P.A.R.C., Loughborough University of Technology (G.B.).
    University of Picardie (France), Mhand Hifi, Toufik Saadi.
    Femto-st (Montbeliard) : Julien Bourgeois.


    Publications : 

       list of publications,

    h index 17, i10 index 23, papers quoted 493 times since 2010 (source: Google Scholar), g index 26.

    Research Activities (selected papers)

      Computer Science    
        Parallel computing, distributed computing
          Peer to peer computing:
            (PDP 2013, IEEE CSE 2012, Grand Colloque STIC2012, IPDPSW 2011, IPDPSW 2011, HotP2P 2010, PDP2010,
            GENI Engineering Conference Duke U. 2010, STIC 2010, RenPar 2009, Ter@tec 09, PDP 2005).
          GPU computing:
           (COMPUTERS & Operations Research 2012, IPDPS 2013, IPDPS 2012, PDP2012, HPCC2011, PDP2011, IPDPSW 2011,
            ROADEF 2010a , ROADEF 2010b).
          Load balancing:
           (PDP 2006, JPDC 2005, Rapport LAAS 04554, PARCO 2001).
          Distributed Computing
           (MECHATRONICS 2012 , iThings 2013, dMEMS 2011).
          Performance Prediction :
              (HPCC 2012, HOTP2P 2011)
          Asynchronous parallel or distributed iterative algorithms, asynchronous iterations with order intervals:
            (HDR 98, slides, PhD thesis).
             Design, mathematical models, convergence study:
               (Comput Appl. Math. 2005MOC 1998, JPDC 1996, PARCO 1993,
               SIAM J. Numeric. Anal. 1990, SIAM J. Control and Optimization 1987).
             Stopping criteria, distributed convergence detection, termination:
               (JCAM 2008, GEI 2005, INT. MATH. Journ. 2002, JSS 2002, JPDC 1996, PAA 1996,
                Int. Conf. On Parall. And Distrib. Comput. Syst. 1996).
             Round off errors study:
              ( I.M.A. Journ Numeric. Anal. 2005, ETNA 2002).
             Implementation:  IBM SP, Cray T3E, SMP, clusters:
               (JPDC 2007, PDP 2007, PDP 2003, PDPTA 2000, Calc. Parall. 1998, PARCO 1997, Calc. Parall. 1996).
      Applied Mathematics and Optimal Control
         Integer programming
           Knapsack problems:
              Sequential methods, heuristics, exact methods, constraint rotation.
                Multidimensional knapsack problem (EJIE 2010, EJIE 2009, EJOR 2009 , MOSIM08, ROADEF 2008)..
                Knapsack sharing problem (CIE2011, CIE39).
                Multiple knapsack problem (IJMOR2012, ROADEF 2010c).
                Problems with equality constraints: (ROADEF 2005).
              Parallel methods (iThings 2013, PDP 2006, JPDC 2005, PARCO 2001).          
         Nonlinear optimization
           Network flow problems
              Relaxation methods: (SIAM J. Control and Optimization 1987).
              Gradient type methods: (JPDC 1996, COAP 1996).
              Newton multi splitting methods:
              Optimal routing: (Parall. Comput. 1992, IFIP SMO 1991).
         Control theory: (JSS 2002).
         Boundary value problems
              Nonlinear diffusion problems: (Numer. Alg. 2003, MOC 1998, 8-th Int. Col. Diff. Equ. 1997).
              Convection-diffusion problems: (SC09, JPDC 2007, PDP 2003).
              Obstacle problem: (IEEE CSE 2012, IPDPSW 2011, HotP2P 2011, HotP2P 2010, Calculateurs Par. 2001).
              Hamilton-Jacobi-Bellman problem: (MOC 1998).
         Markov systems: (NSMC 1999, CDC 1994).
         State acquisition and pattern recognition: (Mechatronics 2012 , dMEMS 2010).

    Some Ph.D. students:

    M. E. Lalami: combinatorial optimisation, 2012, GPU computing (thesis)
    T. T. Nguyen: P2P HPC computing, 2011, (thesis)
    V. Boyer: integer programming, 2007, (thesis).
    M. Jarraya:  parallel computing, 2000, (thesis, slides).
    D. Gazen: parallel computing, 1998, (thesis).




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