Luc Giraud

Publication Activity (10 Years)

Years Active: 1993-2024
Publications (10 Years): 22

Top Topics

Conjugate Gradient

Numerically Stable

Top Venues

SIAM J. Matrix Anal. Appl.

SIAM J. Sci. Comput.

Euro-Par Workshops

Publications

Nicolas Venkovic, Paul Mycek, Olivier P. Le Maître, Luc Giraud
Preconditioners based on Voronoi quantizers of random variable coefficients for stochastic elliptic partial differential equations. CoRR (2024)
Aboul-Karim Mohamed El Maarouf, Luc Giraud, Abdou Guermouche, Thomas Guignon
Combining reduction with synchronization barrier on multi-core processors. Concurr. Comput. Pract. Exp. 35 (1) (2023)
Luc Giraud, Yan-Fei Jing, Yan-Fei Xiang
A Block Minimum Residual Norm Subspace Solver with Partial Convergence Management for Sequences of Linear Systems. SIAM J. Matrix Anal. Appl. 43 (2) (2022)
Olivier Coulaud, Luc Giraud, Martina Iannacito
On some orthogonalization schemes in Tensor Train format. CoRR (2022)
Olivier Coulaud, Luc Giraud, Martina Iannacito
A robust GMRES algorithm in Tensor Train format. CoRR (2022)
Emmanuel Agullo, Mirco Altenbernd, Hartwig Anzt, Leonardo Bautista-Gomez, Tommaso Benacchio, Luca Bonaventura, Hans-Joachim Bungartz, Sanjay Chatterjee, Florina M. Ciorba, Nathan DeBardeleben, Daniel Drzisga, Sebastian Eibl, Christian Engelmann, Wilfried N. Gansterer, Luc Giraud, Dominik Göddeke, Marco Heisig, Fabienne Jézéquel, Nils Kohl, Xiaoye Sherry Li, Romain Lion, Miriam Mehl, Paul Mycek, Michael Obersteiner, Enrique S. Quintana-Ortí, Francesco Rizzi, Ulrich Rüde, Martin Schulz, Fred Fung, Robert Speck, Linda Stals, Keita Teranishi, Samuel Thibault, Dominik Thönnes, Andreas Wagner, Barbara I. Wohlmuth
Resiliency in numerical algorithm design for extreme scale simulations. Int. J. High Perform. Comput. Appl. 36 (2) (2022)
Tommaso Benacchio, Luca Bonaventura, Mirco Altenbernd, Chris D. Cantwell, Peter D. Düben, Mike Gillard, Luc Giraud, Dominik Göddeke, Erwan Raffin, Keita Teranishi, Nils Wedi
Resilience and fault tolerance in high-performance computing for numerical weather and climate prediction. Int. J. High Perform. Comput. Appl. 35 (4) (2021)
Olaf Schenk, Peter Arbenz, Luc Giraud, Wim Vanroose
Guest editorial: Virtual special issue on parallel matrix algorithms and applications (PMAA'18). Parallel Comput. 102 (2021)
Emmanuel Agullo, Mirco Altenbernd, Hartwig Anzt, Leonardo Bautista-Gomez, Tommaso Benacchio, Luca Bonaventura, Hans-Joachim Bungartz, Sanjay Chatterjee, Florina M. Ciorba, Nathan DeBardeleben, Daniel Drzisga, Sebastian Eibl, Christian Engelmann, Wilfried N. Gansterer, Luc Giraud, Dominik Göddeke, Marco Heisig, Fabienne Jézéquel, Nils Kohl, Xiaoye Sherry Li, Romain Lion, Miriam Mehl, Paul Mycek, Michael Obersteiner, Enrique S. Quintana-Ortí, Francesco Rizzi, Ulrich Rüde, Martin Schulz, Fred Fung, Robert Speck, Linda Stals, Keita Teranishi, Samuel Thibault, Dominik Thönnes, Andreas Wagner, Barbara I. Wohlmuth
Resiliency in Numerical Algorithm Design for Extreme Scale Simulations. CoRR (2020)
Emmanuel Agullo, Siegfried Cools, Emrullah Fatih Yetkin, Luc Giraud, Nick Schenkels, Wim Vanroose
On Soft Errors in the Conjugate Gradient Method: Sensitivity and Robust Numerical Detection. SIAM J. Sci. Comput. 42 (6) (2020)
Luc Giraud, Ulrich Rüde, Linda Stals
Resiliency in Numerical Algorithm Design for Extreme Scale Simulations (Dagstuhl Seminar 20101). Dagstuhl Reports 10 (3) (2020)
Emmanuel Agullo, Luc Giraud, Louis Poirel
Robust Preconditioners via Generalized Eigenproblems for Hybrid Sparse Linear Solvers. SIAM J. Matrix Anal. Appl. 40 (2) (2019)
Emmanuel Agullo, Luc Giraud, Stéphane Lanteri, Gilles Marait, Anne-Cécile Orgerie, Louis Poirel
Energy Analysis of a Solver Stack for Frequency-Domain Electromagnetics. PDP (2019)
Emmanuel Agullo, Peter Arbenz, Luc Giraud, Olaf Schenk
Special issue on parallel matrix algorithms and applications (PMAA'16). Parallel Comput. 74 (2018)
Siegfried Cools, Emrullah Fatih Yetkin, Emmanuel Agullo, Luc Giraud, Wim Vanroose
Analyzing the Effect of Local Rounding Error Propagation on the Maximal Attainable Accuracy of the Pipelined Conjugate Gradient Method. SIAM J. Matrix Anal. Appl. 39 (1) (2018)
Emmanuel Agullo, Eric Darve, Luc Giraud, Yuval Harness
Low-Rank Factorizations in Data Sparse Hierarchical Algorithms for Preconditioning Symmetric Positive Definite Matrices. SIAM J. Matrix Anal. Appl. 39 (4) (2018)
Emmanuel Agullo, Luc Giraud, Abdou Guermouche, Jean Roman, Mawussi Zounon
Numerical recovery strategies for parallel resilient Krylov linear solvers. Numer. Linear Algebra Appl. 23 (5) (2016)
Siegfried Cools, Wim Vanroose, Emrullah Fatih Yetkin, Emmanuel Agullo, Luc Giraud
On rounding error resilience, maximal attainable accuracy and parallel performance of the pipelined Conjugate Gradients method for large-scale linear systems in PETSc. EASC (2016)
Emmanuel Agullo, Luc Giraud, Stojce Nakov
Task-Based Sparse Hybrid Linear Solver for Distributed Memory Heterogeneous Architectures. Euro-Par Workshops (2016)
Emmanuel Agullo, Luc Giraud, Pablo Salas, Mawussi Zounon
Interpolation-Restart Strategies for Resilient Eigensolvers. SIAM J. Sci. Comput. 38 (5) (2016)
Emmanuel Agullo, Luc Giraud, Abdou Guermouche, Stojce Nakov, Jean Roman
Task-Based Conjugate Gradient: From Multi-GPU Towards Heterogeneous Architectures. Euro-Par Workshops (2016)
Emmanuel Agullo, Siegfried Cools, Luc Giraud, A. Moreau, Pablo Salas, Wim Vanroose, Emrullah Fatih Yetkin, Mawussi Zounon
Hard Faults and Soft-Errors: Possible Numerical Remedies in Linear Algebra Solvers. VECPAR (2016)
Pablo Salas, Luc Giraud, Yousef Saad, Stéphane Moreau
Spectral recycling strategies for the solution of nonlinear eigenproblems in thermoacoustics. Numer. Linear Algebra Appl. 22 (6) (2015)
Emmanuel Agullo, Luc Giraud, Mawussi Zounon
On the Resilience of Parallel Sparse Hybrid Solvers. HiPC (2015)
M. Chanaud, Luc Giraud, David Goudin, Jean-Jacques Pesqué, Jean Roman
A Parallel Full Geometric Multigrid Solver for Time Harmonic Maxwell Problems. SIAM J. Sci. Comput. 36 (2) (2014)
Emmanuel Agullo, Luc Giraud, Yan-Fei Jing
Block GMRES Method with Inexact Breakdowns and Deflated Restarting. SIAM J. Matrix Anal. Appl. 35 (4) (2014)
Emmanuel Agullo, Luc Giraud, Abdou Guermouche, Azzam Haidar, Jean Roman
Parallel algebraic domain decomposition solver for the solution of augmented systems. Adv. Eng. Softw. 60 (2013)
Emmanuel Agullo, George Bosilca, Bérenger Bramas, Cedric Castagnede, Olivier Coulaud, Eric Darve, Jack J. Dongarra, Mathieu Faverge, Nathalie Furmento, Luc Giraud, Xavier Lacoste, Julien Langou, Hatem Ltaief, Matthias Messner, Raymond Namyst, Pierre Ramet, Toru Takahashi, Samuel Thibault, Stanimire Tomov, Ichitaro Yamazaki
Abstract: Matrices Over Runtime Systems at Exascale. SC Companion (2012)
Emmanuel Agullo, George Bosilca, Bérenger Bramas, Cedric Castagnede, Olivier Coulaud, Eric Darve, Jack J. Dongarra, Mathieu Faverge, Nathalie Furmento, Luc Giraud, Xavier Lacoste, Julien Langou, Hatem Ltaief, Matthias Messner, Raymond Namyst, Pierre Ramet, Toru Takahashi, Samuel Thibault, Stanimire Tomov, Ichitaro Yamazaki
Poster: Matrices over Runtime Systems at Exascale. SC Companion (2012)
Martin Berzins, Daniela di Serafino, Martin J. Gander, Luc Giraud
Introduction. Euro-Par (2) (2011)
Luc Giraud, Azzam Haidar, S. Pralet
Using multiple levels of parallelism to enhance the performance of domain decomposition solvers. Parallel Comput. 36 (5-6) (2010)
Luc Giraud, Serge Gratton, Xavier Pinel, Xavier Vasseur
Flexible GMRES with Deflated Restarting. SIAM J. Sci. Comput. 32 (4) (2010)
Luc Giraud, Azzam Haidar
Parallel algebraic hybrid solvers for large 3D convection-diffusion problems. Numer. Algorithms 51 (2) (2009)
Luc Giraud, Azzam Haidar, Layne T. Watson
Parallel scalability study of hybrid preconditioners in three dimensions. Parallel Comput. 34 (6-8) (2008)
Luiz Mariano Carvalho, Wagner Fortes, Luc Giraud
Comparing Some Methods and Preconditioners for Hydropower Plant Flow Simulations. VECPAR (2008)
Valérie Frayssé, Luc Giraud, Serge Gratton
Algorithm 881: A Set of Flexible GMRES Routines for Real and Complex Arithmetics on High-Performance Computers. ACM Trans. Math. Softw. 35 (2) (2008)
Luc Giraud, Serge Gratton, Julien Langou
Convergence in Backward Error of Relaxed GMRES. SIAM J. Sci. Comput. 29 (2) (2007)
Bruno Carpentieri, Luc Giraud, Serge Gratton
Additive and Multiplicative Two-Level Spectral Preconditioning for General Linear Systems. SIAM J. Sci. Comput. 29 (4) (2007)
Denis Mariano-Goulart, P. Maréchal, Serge Gratton, Luc Giraud, M. Fourcade
A priori selection of the regularization parameters in emission tomography by Fourier synthesis. Comput. Medical Imaging Graph. 31 (7) (2007)
Marc Baboulin, Luc Giraud, Serge Gratton, Julien Langou
A distributed packed storage for large dense parallel in-core calculations. Concurr. Comput. Pract. Exp. 19 (4) (2007)
Luc Giraud, Serge Gratton
On the Sensitivity of Some Spectral Preconditioners. SIAM J. Matrix Anal. Appl. 27 (4) (2006)
Luc Giraud, Daniel Ruiz, Ahmed Touhami
A Comparative Study of Iterative Solvers Exploiting Spectral Information for SPD Systems. SIAM J. Sci. Comput. 27 (5) (2006)
Luc Giraud, A. Marrocco, J.-C. Rioual
Iterative versus direct parallel substructuring methods in semiconductor device modelling. Numer. Linear Algebra Appl. 12 (1) (2005)
Valérie Frayssé, Luc Giraud, Serge Gratton, Julien Langou
Algorithm 842: A set of GMRES routines for real and complex arithmetics on high performance computers. ACM Trans. Math. Softw. 31 (2) (2005)
Bruno Carpentieri, Iain S. Duff, Luc Giraud, Guillaume Sylvand
Combining Fast Multipole Techniques and an Approximate Inverse Preconditioner for Large Electromagnetism Calculations. SIAM J. Sci. Comput. 27 (3) (2005)
Luc Giraud, Julien Langou, Miroslav Rozlozník, Jasper van den Eshof
Rounding error analysis of the classical Gram-Schmidt orthogonalization process. Numerische Mathematik 101 (1) (2005)
Marc Baboulin, Luc Giraud, Serge Gratton
A Parallel Distributed Solver for Large Dense Symmetric Systems: Applications to Geodesy and Electromagnetism Problems. Int. J. High Perform. Comput. Appl. 19 (4) (2005)
P. Maréchal, Denis Mariano-Goulart, Luc Giraud, Serge Gratton
Towards Automatic Selection of the Regularization Parameters in Emission Tomgraphy by Fourier Synthesis. ECCV Workshops CVAMIA and MMBIA (2004)
Luc Giraud, Daniel Ruiz, Ahmed Touhami
Krylov and Polynomial Iterative Solvers Combined with Partial Spectral Factorization for SPD Linear Systems. VECPAR (2004)
Luc Giraud, Serge Gratton, Julien Langou
Update Procedure for Reorthogonalizing the Orthogonal Factor from Modified Gram-Schmidt. SIAM J. Matrix Anal. Appl. 25 (4) (2004)
Bruno Carpentieri, Iain S. Duff, Luc Giraud, M. Magolu monga Made
Sparse symmetric preconditioners for dense linear systems in electromagnetism. Numer. Linear Algebra Appl. 11 (8-9) (2004)
Luc Giraud, Julien Langou
A Robust Criterion for the Modified Gram-Schmidt Algorithm with Selective Reorthogonalization. SIAM J. Sci. Comput. 25 (2) (2003)
Iain S. Duff, Luc Giraud, Henk A. van der Vorst, Peter Zinterhof
Topic Introduction. Euro-Par (2003)
Luc Giraud, Fernando Guevara Vasquez, Ray S. Tuminaro
Grid transfer operators for highly variable coefficient problems in two-level non-overlapping domain decomposition methods. Numer. Linear Algebra Appl. 10 (5-6) (2003)
Bruno Carpentieri, Iain S. Duff, Luc Giraud, Guillaume Sylvand
An Embedded Iterative Scheme in Electromagnetism. PPAM (2003)
Bruno Carpentieri, Iain S. Duff, Luc Giraud
A Class of Spectral Two-Level Preconditioners. SIAM J. Sci. Comput. 25 (2) (2003)
Luc Giraud
Combining Shared and Distributed Memory Programming Models on Clusters of Symmetric Multiprocessors: Some Basic Promising Experiments. Int. J. High Perform. Comput. Appl. 16 (4) (2002)
Iain S. Duff, Wolfgang Borchers, Luc Giraud, Henk A. van der Vorst
Numerical Algorithms. Euro-Par (2002)
Luiz Mariano Carvalho, Luc Giraud, Gérard Meurant
Local preconditioners for two-level non-overlapping domain decomposition methods. Numer. Linear Algebra Appl. 8 (4) (2001)
Luiz Mariano Carvalho, Luc Giraud, Patrick Le Tallec
Algebraic Two-Level Preconditioners for the Schur Complement Method. SIAM J. Sci. Comput. 22 (6) (2001)
Luc Giraud, Ronan Guivarch, Joël Stein
Parallel Distributed FFT-Based Solvers for 3-D Poisson Problems in Meso-Scale Atmospheric Simulations. Int. J. High Perform. Comput. Appl. 15 (1) (2001)
Bruno Carpentieri, Iain S. Duff, Luc Giraud
Sparse pattern selection strategies for robust Frobenius-norm minimization preconditioners in electromagnetism. Numer. Linear Algebra Appl. 7 (7-8) (2000)
Bruno Carpentieri, Iain S. Duff, Luc Giraud
Robust Preconditioning of Dense Problems from Electromagnetics. NAA (2000)
Renato Campo, Luc Giraud
Emerging Topics in Advanced Computing in Europe - Introduction. Euro-Par (1999)
F. Chalot, G. Chevalier, Q. V. Dinh, Luc Giraud
Some Investigations of Domain Decomposition Techniques in Parallel CFD. Euro-Par (1999)
Luiz Mariano Carvalho, Luc Giraud
Parallel Subdomain-Based Preconditioner for the Schur Complement. Euro-Par (1999)
Sandra Baldini, Luc Giraud, Javier G. Izaguirre, José M. Jiménez, Luis M. Matey
High Performance Computing in Multibody System Design. Int. J. High Perform. Comput. Appl. 13 (2) (1999)
Luc Giraud, Ronan Guivarch, Joël Stein
A Parallel Distributed Fast 3D Poisson Solver for Méso-NH. Euro-Par (1999)
Patrick Jabouille, Ronan Guivarch, Philippe Kloos, Didier Gazen, Nicolas Gicquel, Luc Giraud, Nicole Asencio, Veronique Ducrocq, Juan Escobar, Jean-Luc Redelsperger, Joël Stein, Jean-Pierre Pinty
Parallelization of the French Meteorological Mesoscale Model MésoNH. Euro-Par (1999)
Valérie Frayssé, Luc Giraud, Hatim Kharraz Aroussi
On the Influence of the Orthogonalization Scheme on the Parallel Performance of GMRES. Euro-Par (1998)
Guillaume Alléon, Michele Benzi, Luc Giraud
Sparse approximate inverse preconditioning for dense linear systems arising in computational electromagnetics. Numer. Algorithms 16 (1) (1997)
Sandra Baldini, Luc Giraud, Laurent Hamel, José M. Jiménez, Luis M. Matey
HIPERCOMBATS: A Parallel Industrial Tool for Two-Wheeler Suspensions Design. HPCN Europe (1997)
Luiz Mariano Carvalho, Luc Giraud
Parallel Domain Decomposition Experiments on the Meiko CS2-HA. HPCN Europe (1996)
Valérie Frayssé, Luc Giraud, Vincent Toumazou
Parallel Computation of Spectral Portraits on the Meiko CS2. HPCN Europe (1996)
Luc Giraud, Nathan Maman, Pascal Menegazzi, Andrea Micelotta, Bernadette Thomas
Parallel Industrial Incompressible CFD Calculations with HPCN3S. HPCN Europe (1996)
Luc Giraud
Block Preconditioned Conjugate Gradient Methods on a Distributed Virtual Shared Memory Multiprocessor. Int. J. High Speed Comput. 7 (2) (1995)
Gérard Degrez, Luc Giraud, Mark Loriot, Andrea Micelotta, Bruno Nitrosso, Alain Stoessel
Parallel industrial CFD calculations with N3S. HPCN Europe (1995)
Luc Giraud, G. M. Manzini
Parallel Distributed Implementations of 2D Explicit Euler Solvers. HPCN (1994)
Luc Giraud, Ray S. Tuminaro
Domain Decomposition Algorithms for the Drift-Diffusion Equations. PPSC (1993)
Luc Giraud
Shared and Distributed Implementations of Block Preconditioned Conjugate Gradient Methods Using Domain Decomposition on the BBN TC2000. PPSC (1993)