Joint Laboratory INRIA CERFACS

Julien Langou, who is Assistant Professor in the Department of Mathematical and Statistical Sciences at the University of Colorado Denver, spent a month in July thanks to an INRIA visiting professor grant.

Julien's expertise lies in numerical linear algebra, Krylov subspace methods and dense linear algebra on emerging platforms; he is co-PI of large NSF award on this latter topics. During his one month visit, Julien collaborated with HiePACS members on ongoing research related to the iterative solution of linear systems with multiple right-hand sides and communication avoiding algorithms under study for PLASMA. The new results of the former subject will be reported in joint paper co-authored by researchers from HiePACS, CERFACS and EADS-IW with applications to the radar cross section calculation in electromagnetism.

In the framework of the FP7 ITN project Myplanet, Rob Bisseling visited the INRIA-CERFACS Joint Laboratory for 3 months (May-July 2010).

Rob is a full professor in Scientific Computing in the Mathematics department of Utrecht University and a world-wise recognized researcher in the field parallel scientific computing, sparse matrix computation, combinatorial science computing.

During his visit, Rob had fruitful exchanges with both INRIA and CERFACS researchers on the use of advanced graph partitioning tools in the design of parallel hierarchical hybrid linear solvers and in the partitioning of huge unstructured meshes for parallel scalable combustion simulations.