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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

Cerfacs’ kraken configuration upgrade to more than 500 Tflop/s

superadmin |  2 October 2019

64 skylake nodes have been added to Cerfacs' cluster Kraken which offer now more than 7 000 skylake cores and 563 peak Tflop/s.Read more


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

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