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Sparse Days Meeting 2008 at Cerfacs

Sparse Days Meeting 2008 at CERFACS
June 23rd-24th, 2008

The Parallel Algorithms Team at CERFACS split its annual “Sparse Days at CERFACS” this year as a specific workshop inside the VECPAR conference (http://vecpar.fe.up.pt/2008/).

 

Adobe_PDF_file_icon_24x24 List of Participants


Programme of Monday, June 23th


10.00 – 11.00 Registration and welcome coffee


11.00 – 12.30 : PhD defense of Azzam Haidar (CERFACS) : Adobe_PDF_file_icon_24x24On the parallel scalability of hybrid linear solvers for large three-dimensional problems

A. Haidar - SD2008

PhD Thesis

13.00 – 14.30 Lunch

14.30 – 15.00 : Mario Arioli (RAL) : Matrix square root and interpolation spaces
15.00 – 15.30 : Osni Marques (Lawrence Berkeley National Laboratory) : Parallel Eigensolvers for a Discretized Radiative Transfer Problem
15.30 – 16.00 : Luca Amodei (UPS) : An invariant subspace method for large-scale algebraic Riccati equation

16.00 – 16.30 Pause

16.30 – 17.00 : Dominique Orban (GERAD and Ecole Polytechnique, Montreal) : Projected Krylov Methods for Unsymmetric Augmented Systems
17.00 – 17.30 : Karl Gustafson (University of Colorado at Boulder) : Normal Degree and Krylov Sequences

17.30 PhD Cocktail


Programme of Tuesday, June 24th


9.30 – 10.00 : Vincent Malmedy (FUNDP) : Approximating Hessians in multilevel unconstrained optimization
10.00 – 10.30 : Pascal Hénon (LaBRI and INRIA Bordeaux-Sud-Ouest – Scalapplix project) HIPS : A parallel hybrid direct/iterative solver based on a Schur complement approach
10.30 – 11.00 : Xiaoye Sherry Li (Lawrence Berkeley National Laboratory) : Scalability issues in sparse factorization and triangular solution

11.00 – 11.30 Pause

11.30 – 12.00 : Mario Arioli (RAL) : Backward stability of FGMRES
12.00 – 12.30 : Jonathan Hogg (RAL) : On the use of mixed precision for the fast and robust solution of sparse symmetric linear systems

12.30 – 14.00 Lunch

14.00 – 14.30 : Gérard Meurant (CEA) : Computing the trace of the inverse of sparse matrices using modified moments
photo (Gene Golub in Toulouse)
14.30 – 15.00 : Pierre Maréchal (UPS) : On regularization by mollification
15.00 – 15.15 : Jennifer Scott (RAL) : Gene meets Gronwall

20.00 – 23.00 Sparse Days dinner

NEWS

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CERFACS |  9 June 2021

The participation of the CNRM-CERFACS group in the international coupled global climate model intercomparison exercise CMIP6 was debriefed on 10 and 11 May. Since the mid-1990s, the various phases of the Coupled Model Intercomparison Project (CMIP), supported by the World Climate Research Programme (WCRP), have enabled climate science to make significant progress, feeding into the IPCC reports, supporting regional climate modelling activities and downstream climate services. On the balance sheet, the participation of CNRM-CERFACS in the extremely demanding CMIP6 exercise has resulted in a large-scale, high-quality contribution in terms of climate simulations, thanks in particular to the strong commitment of researchers and engineers, the quality of support services and national and international collaborations. The activities mainly took place over the period 2013-2020. Initially, the production environment ("workflow") was set up and the coupled climate models were assembled by capitalising on the development of components (atmosphere, ocean and continental surfaces) carried out over the long term. The actual production of simulations was spread over 2018-2020. During the debriefing, perspectives (scientific objectives, model development, organisation) were drawn up with a view to a new participation of CNRM and CERFACS in CMIPRead more


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