Pierre Ramet

Pierre RAMET - Responsable du département SATANAS (Supports et Algorithms pour les Applications Numériques Hautes Performances)
128
Documents
Affiliations actuelles
  • Université de Bordeaux (UB)
  • Centre Inria de l'Université de Bordeaux
  • Laboratoire Bordelais de Recherche en Informatique (LaBRI)
  • Institut Universitaire de Technologie - Bordeaux (IUT Bordeaux)
  • Outils et Optimisations pour le Calcul Haute Performance et l'Apprentissage (TOPAL)
Identifiants chercheurs
Contact

Présentation

Ma problématique de recherche concerne les problèmes du calcul haute performance, en particulier l'algèbre linéaire creuse. Je développe la bibliothèque PaStiX (https://solverstack.gitlabpages.inria.fr/pastix) qui implémente un solveur direct creux haute performance.

Domaines de recherche

Informatique [cs] Analyse numérique [math.NA]

Compétences

Sparse Linear Algebra Parallel Algorithms Scientific Computing

Publications

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Publications

Toward an Algebraic Multigrid Method for the Indefinite Helmholtz Equation

Robert Falgout , Matthieu Lecouvez , Pierre Ramet , Clément Richefort

SIAM Journal on Scientific Computing, 2025, pp.S285-S310. ⟨10.1137/24M1672560⟩

Article dans une revue cea-05240268v1

The JOREK non-linear extended MHD code and applications to large-scale instabilities and their control in magnetically confined fusion plasmas

Matthias Hoelzl , Guido Huijsmans , Stanislas Pamela , Marina Bécoulet , Eric Nardon et al.

Nuclear Fusion, 2021, 61 (6), pp.065001. ⟨10.1088/1741-4326/abf99f⟩

Article dans une revue hal-03352509v1
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Efficient Parallel Solution of the 3D Stationary Boltzmann Transport Equation for Diffusive Problems

Salli Moustafa , François Févotte , Mathieu Faverge , Laurent Plagne , Pierre Ramet

Journal of Computational Physics, 2019, ⟨10.1016/j.jcp.2019.03.019⟩

Article dans une revue hal-02080624v1
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Sparse supernodal solver using block low-rank compression: Design, performance and analysis

Grégoire Pichon , Eric Darve , Mathieu Faverge , Pierre Ramet , Jean Roman

International Journal of Computational Science and Engineering, 2018, 27, pp.255 - 270. ⟨10.1016/J.JOCS.2018.06.007⟩

Article dans une revue hal-01824275v1
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Reordering Strategy for Blocking Optimization in Sparse Linear Solvers

Grégoire Pichon , Mathieu Faverge , Pierre Ramet , Jean Roman

SIAM Journal on Matrix Analysis and Applications, 2017, SIAM Journal on Matrix Analysis and Applications, 38 (1), pp.226 - 248. ⟨10.1137/16M1062454⟩

Article dans une revue hal-01485507v2
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Shared Memory Parallelism for 3D Cartesian Discrete Ordinates Solver

Salli Moustafa , Ivan Dutka Malen , Laurent Plagne , Angélique Ponçot , Pierre Ramet

Annals of Nuclear Energy, 2014, Special Issue SNA+MC 2013, pp.1-10. ⟨10.1016/j.anucene.2014.08.034⟩

Article dans une revue hal-00986975v1
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Efficient Parallel Resolution of The Simplified Transport Equations in Mixed-Dual Formulation

Maxime Barrault , Bruno Lathuilière , Pierre Ramet , Jean Roman

Journal of Computational Physics, 2011, 230 (5), pp.2004-2020. ⟨10.1016/j.jcp.2010.11.047⟩

Article dans une revue hal-00547406v1

Non-linear MHD simulations of edge localized modes (ELMs)

G. Huysmans , Stanislas Pamela , Emiel van Der Plas , Pierre Ramet

Plasma Physics, 2009, 51 (12), pp.124012

Article dans une revue hal-01251754v1
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Numerical simulation of unsteady MHD flows and applications

Remi Abgrall , Pierre Ramet , Robin Huart

Magnetohydrodynamics c/c of Magnitnaia Gidrodinamika, 2009, 45 (2), pp.225-232

Article dans une revue hal-00547413v1

On finding approximate supernodes for an efficient ILU(k) factorization

Pascal Hénon , Pierre Ramet , Jean Roman

Parallel Computing, 2008, 34, pp.345--362

Article dans une revue inria-00346018v1

PaStiX: A High-Performance Parallel Direct Solver for Sparse Symmetric Definite Systems

Pascal Hénon , Pierre Ramet , Jean Roman

Parallel Computing, 2002, 28 (2), pp.301--321

Article dans une revue inria-00346017v1

Scilab to Scilab//, the OURAGAN Project

Eddy Caron , Serge Chaumette , Sylvain Contassot-Vivier , Frédéric Desprez , Eric Fleury et al.

Parallel Computing, 2001, 27 (11), pp.1497-1519. ⟨10.1016/S0167-8191(01)00101-6⟩

Article dans une revue istex inria-00000277v1

Parallel Sparse Linear Algebra and Application to Structural Mechanics

David Goudin , Pascal Hénon , Francois Pellegrini , Pierre Ramet , Jean Roman et al.

Numerical Algorithms, 2000, 24, pp.371--391

Article dans une revue inria-00346016v1

Algebraic hierarchical partitioning to improve H-matrix compression

Dimitri Walther , Mathieu Faverge , Matthieu Lecouvez , Pierre Ramet

PP 2026 - SIAM Conference on Parallel Processing for Scientific Computing, SIAM, Mar 2026, Berlin, Germany

Communication dans un congrès hal-05411444v1
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Scalable and portable LU factorization with partial pivoting on top of runtime systems

Alycia Lisito , Mathieu Faverge , Matthieu Kuhn , Florent Pruvost , Pierre Ramet

IPDPS25 - 39th IEEE International Parallel and Distributed Processing Symposium, Jun 2025, Milan, Italy

Communication dans un congrès hal-04984070v1
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Batching the tasks of the LU factorization with partial pivoting on top of runtime systems

Alycia Lisito , Mathieu Faverge , Matthieu Kuhn , Florent Pruvost , Pierre Ramet

COMPAS 2025 - Conférence francophone d'informatique en Parallélisme, Architecture et Système, Jun 2025, Bordeaux, France

Communication dans un congrès hal-05148627v1
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Slides 18th CMCIM 2024, Toward an algebraic multigrid method for the indefinite Helmholtz equation

Rob Falgout , Matthieu Lecouvez , Pierre Ramet , Clément Richefort

18th Copper Mountain Conference On Iterative Methods, Apr 2024, Frisco (Co), United States

Communication dans un congrès cea-04620993v1
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Enhancing sparse direct solver scalability through runtime system automatic data partition

Alycia Lisito , Mathieu Faverge , Grégoire Pichon , Pierre Ramet

WAMTA 2024 - Workshop on Asynchronous Many-Task Systems and Applications 2024, Feb 2024, Knoxville, United States. pp.105-110, ⟨10.1007/978-3-031-61763-8_10⟩

Communication dans un congrès hal-04527103v1

Comparative Study of Mixed-Precision and Low-Rank Compression Techniques in Sparse Direct Solvers

Brieuc Nicolas , Mathieu Faverge , Pierre Ramet , Alycia Lisito , Mohamed Kherraz

2024 SIAM Conference on Applied Linear Algebra, Society for Industrial and Applied Mathematics, May 2024, Paris, France

Communication dans un congrès hal-04585047v1
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Student Paper Competition, Copper Mountain Conference 2023 - Toward a multilevel method for the Helmholtz equation

Clément Richefort , Matthieu Lecouvez , Robert Falgout , Pierre Ramet

21st SIAM Copper Mountain Conference on Multigrid Method, Apr 2023, Copper Mountain, CO, United States

Communication dans un congrès hal-04046622v1
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New parallel features in the sparse solver PaStiX

Alycia Lisito , Mathieu Faverge , Pierre Ramet

Sparse Days 2023, Jun 2023, Toulouse, France

Communication dans un congrès hal-04589448v1

Slides, SIAM CSE 2023 - Toward a multilevel method for the Helmholtz Equation

Robert Falgout , Matthieu Lecouvez , Pierre Ramet , Clément Richefort

CSE 2023 - SIAM Conference on Computational Science and Engineering, Feb 2023, Amsterdam, Netherlands

Communication dans un congrès hal-04046630v1
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Deciding Non-Compressible Blocks in Sparse Direct Solvers using Incomplete Factorization

Esragul Korkmaz , Mathieu Faverge , Grégoire Pichon , Pierre Ramet

HiPC 2021 - 28th IEEE International Conference on High Performance Computing, Data, and Analytics, Dec 2021, Bangalore, India. pp.1-10, ⟨10.1109/HiPC53243.2021.00024⟩

Communication dans un congrès hal-03361299v1
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Improving mapping for sparse direct solvers: A trade-off between data locality and load balancing

Changjiang Gou , Ali Al Zoobi , Anne Benoit , Mathieu Faverge , Loris Marchal et al.

EuroPar 2020 - 26th International European Conference on Parallel and Distributed Computing, Aug 2020, Warsaw / Virtual, Poland. pp.1-16

Communication dans un congrès hal-02973315v1

Recent Developments Around the Block Low-Rank PaStiX Solver

Grégoire Pichon , Mathieu Faverge , Pierre Ramet

PP 2020 - SIAM Conference on Parallel Processing for Scientific Computing, Feb 2020, Seattle, United States

Communication dans un congrès hal-03140189v1

Rank Revealing QR Methods for Sparse Block Low Rank Solvers

Esragul Korkmaz , Mathieu Faverge , Grégoire Pichon , Pierre Ramet

Sparse Days 2019, Jul 2019, Toulouse, France

Communication dans un congrès hal-02326070v1

Block Low-rank Algebraic Clustering for Sparse Direct Solvers

Grégoire Pichon , Eric Darve , Mathieu Faverge , Pierre Ramet , Jean Roman

SIAM Conference on Computational Science and Engineering (CSE19), Feb 2019, Spokane, United States

Communication dans un congrès hal-01956962v1

Rank Revealing QR Methods for Sparse Block Low Rank Solvers

Esragul Korkmaz , Mathieu Faverge , Grégoire Pichon , Pierre Ramet

COMPAS 2019 - Conférence d'informatique en Parallélisme, Architecture et Système, Jun 2019, Anglet, France

Communication dans un congrès hal-02326084v1
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Block Low Rank Algebraic Clustering for Sparse Direct Solvers

Pierre Ramet

Journées Ondes Sud-Ouest (JOSO), Mar 2019, Le Barp, France

Communication dans un congrès hal-02139186v1

Exploiting Parameterized Task-graph in Sparse Direct Solvers

Mathieu Faverge , Grégoire Pichon , Pierre Ramet

SIAM Conference on Computational Science and Engineering (CSE19), Feb 2019, Spokane, United States

Communication dans un congrès hal-01956963v1
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Utilisation de la compression Block Low-Rank pour accélérer un solveur direct creux supernodal

Grégoire Pichon , Eric Darve , Mathieu Faverge , Pierre Ramet , Jean Roman

COMPAS 2018 - Conférence d'informatique en Parallélisme, Architecture et Système, Jul 2018, Toulouse, France

Communication dans un congrès hal-01956959v1
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Supernodes ordering to enhance Block Low-Rank compression in sparse direct solvers

Grégoire Pichon , Eric Darve , Mathieu Faverge , Pierre Ramet , Jean Roman

PMAA 2018 - 10th International Workshop on Parallel Matrix Algorithms and Applications, Jun 2018, Zurich, Switzerland

Communication dans un congrès hal-01956960v1

Sparse Supernodal Solver Using Hierarchical Compression over Runtime System

Grégoire Pichon , Eric Darve , Mathieu Faverge , Pierre Ramet , Jean Roman

SIAM Conference on Computation Science and Engineering (CSE'17), Feb 2017, Atlanta, United States

Communication dans un congrès hal-01421379v1
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Sparse Supernodal Solver Using Block Low-Rank Compression

Grégoire Pichon , Eric Darve , Mathieu Faverge , Pierre Ramet , Jean Roman

18th IEEE International Workshop on Parallel and Distributed Scientific and Engineering Computing (PDSEC 2017), Jun 2017, Orlando, United States

Communication dans un congrès hal-01502215v1
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Sparse Supernodal Solver exploiting Low-Rankness Property

Grégoire Pichon , Eric Darve , Mathieu Faverge , Pierre Ramet , Jean Roman

Sparse Days 2017, Sep 2017, Toulouse, France

Communication dans un congrès hal-01585622v1

Impact of Blocking Strategies for Sparse Direct Solvers on Top of Generic Runtimes

Grégoire Pichon , Mathieu Faverge , Pierre Ramet , Jean Roman

SIAM Conference on Computation Science and Engineering (CSE'17), Feb 2017, Atlanta, United States

Communication dans un congrès hal-01421384v1

Exploiting Modern Manycore Architecture in Sparse Direct Solver with Runtime Systems

Grégoire Pichon , Mathieu Faverge , Pierre Ramet

SIAM Conference on Computation Science and Engineering (CSE'17), Feb 2017, Atlanta, United States

Communication dans un congrès hal-01421383v1

Sparse Supernodal Solver Using Hierarchical Compression

Grégoire Pichon , Eric Darve , Mathieu Faverge , Pierre Ramet , Jean Roman

Workshop on Fast Direct Solvers, Nov 2016, Purdue, United States

Communication dans un congrès hal-01421368v1

Impact of Blocking Strategies for Sparse Direct Solvers on Top of Generic Runtimes

Grégoire Pichon , Mathieu Faverge , Pierre Ramet , Jean Roman

SIAM Conference on Parallel Processing for Scientific Computing (SIAM PP 2016), Apr 2016, Paris, France

Communication dans un congrès hal-01251808v1

Exploiting H-Matrices in Sparse Direct Solvers

Grégoire Pichon , Eric Darve , Mathieu Faverge , Pierre Ramet , Jean Roman

SIAM Conference on Parallel Processing for Scientific Computing (SIAM PP 2016), Apr 2016, Paris, France

Communication dans un congrès hal-01251812v1

On the use of low rank approximations for sparse direct solvers

Grégoire Pichon , Eric Darve , Mathieu Faverge , Pierre Ramet , Jean Roman

SIAM Annual Meeting (AN'16), Jul 2016, Boston, United States

Communication dans un congrès hal-01421376v1

Exploiting Kepler architecture in sparse direct solver with runtime systems

Mathieu Faverge , Grégoire Pichon , Pierre Ramet

9th International Workshop on Parallel Matrix Algorithms and Applications (PMAA'2016), Jul 2016, Bordeaux, France

Communication dans un congrès hal-01421372v1

Towards a recursive graph bipartitioning algorithm for well balanced domain decomposition

Astrid Casadei , Pierre Ramet , Jean Roman

SIAM Conference on Computational Science and Engineering (SIAM CSE 2015), Mar 2015, Salt Lake City, United States

Communication dans un congrès hal-01100985v1
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3D Cartesian Transport Sweep for Massively Parallel Architectures with PARSEC

Salli Moustafa , Mathieu Faverge , Laurent Plagne , Pierre Ramet

IEEE International Parallel & Distributed Processing Symposium (IPDPS 2015), May 2015, Hyderabad, India. pp.581-590, ⟨10.1109/IPDPS.2015.75⟩

Communication dans un congrès hal-01078362v1

Blocking strategy optimizations for sparse direct linear solver on heterogeneous architectures

Mathieu Faverge , Grégoire Pichon , Pierre Ramet , Jean Roman

Sparse Days, Jun 2015, Saint Girons, France

Communication dans un congrès hal-01187881v1

Towards a recursive graph bipartitioning algorithm for well balanced domain decomposition

Astrid Casadei , Pierre Ramet , Jean Roman

Mini-Symposium on "Combinatorial Issues in Sparse Matrix Computation" at ICIAM'15 conference, Aug 2015, Beijing, China

Communication dans un congrès hal-01100990v1

On the use of H-Matrix Arithmetic in PaStiX: a Preliminary Study

Mathieu Faverge , Grégoire Pichon , Pierre Ramet , Jean Roman

Workshop on Fast Direct Solvers, Jun 2015, Toulouse, France

Communication dans un congrès hal-01187882v1

On the design of parallel linear solvers for large scale problems

Xavier Lacoste , Mathieu Faverge , Pierre Ramet

Mini-Symposium on Recent advances in matrix computations for extreme-scale computers at ICIAM'15 conference, Aug 2015, Beijing, China

Communication dans un congrès hal-01100987v1

A task-based sparse direct solver suited for large scale hierarchical/heterogeneous architectures

Xavier Lacoste , Mathieu Faverge , Pierre Ramet

SIAM Conference on Computational Science and Engineering (SIAM CSE 2015), Mar 2015, Salt Lake City, United States

Communication dans un congrès hal-01100979v1
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Nested dissection with balanced halo

Astrid Casadei , Pierre Ramet , Jean Roman

Sixth SIAM Workshop on Combinatorial Scientific Computing, Jul 2014, Lyon, France

Communication dans un congrès hal-00987099v1
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Parallel 3D Sweep Kernel with PARSEC

Salli Moustafa , Mathieu Faverge , Laurent Plagne , Pierre Ramet

HPCC Workshop on HPC-CFD in Energy/Transport Domains, Aug 2014, Paris, France

Communication dans un congrès hal-01078364v1
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Taking advantage of hybrid systems for sparse direct solvers via task-based runtimes

Xavier Lacoste , Mathieu Faverge , Pierre Ramet , Samuel Thibault , George Bosilca

HCW'2014 workshop of IPDPS, May 2014, Phoenix, United States. pp.29-38, ⟨10.1109/IPDPSW.2014.9⟩

Communication dans un congrès hal-00987094v1

Toward parallel scalable linear solvers suited for large scale hierarchical parallel platforms

Emmanuel Agullo , Mathieu Faverge , Luc Giraud , Abdou Guermouche , Pierre Ramet et al.

World Congress on Computational Mechanics, Jul 2014, Barcelona, Spain

Communication dans un congrès hal-00987110v1
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An improved recursive graph bipartitioning algorithm for well balanced domain decomposition

Astrid Casadei , Pierre Ramet , Jean Roman

IEEE International Conference on High Performance Computing (HiPC 2014), Dec 2014, Goa, India. pp.1-10, ⟨10.1109/HiPC.2014.7116878⟩

Communication dans un congrès hal-01100962v1
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Shared Memory Parallelism for 3D Cartesian Discrete Ordinates Solver

Salli Moustafa , Ivan Dutka Malen , Laurent Plagne , Angélique Ponçot , Pierre Ramet

Joint International Conference on Supercomputing in Nuclear Applications and Monte Carlo 2013, Oct 2013, Paris, France

Communication dans un congrès hal-00924989v2
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From hybrid architectures to hybrid solvers

Pierre Ramet

Workshop Celebrating 40 Years of Nested Dissection, Jul 2013, Waterloo, Canada

Communication dans un congrès hal-00924979v1
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Towards Domain Decomposition with Balanced Halo

Astrid Casadei , Luc Giraud , Pierre Ramet , Jean Roman

Workshop Celebrating 40 Years of Nested Dissection, Jul 2013, Waterloo, Canada

Communication dans un congrès hal-00924977v1

Fine Grain Scheduling for Sparse Solver on Manycore Architectures

Mathieu Faverge , Pierre Ramet

SIAM Conference on Parallel Processing for Scientific Computing (SIAM PP 2012), Feb 2012, Savannah, United States

Communication dans un congrès hal-00769026v1

Sparse direct solver on top of large-scale multicore systems with GPU accelerators

Xavier Lacoste , Pierre Ramet

SIAM Conference on Applied Linear Algebra (SIAM LA 2012), Jun 2012, Valence, Spain

Communication dans un congrès hal-00769027v1

Toward a supernodal sparse direct solver over DAG runtimes

George Bosilca , Mathieu Faverge , Xavier Lacoste , Ichitaro Yamazaki , Pierre Ramet

Parallel Matrix Algorithms and Applications, Jun 2012, Londres, United Kingdom

Communication dans un congrès hal-00769030v1

Memory Optimization to Build a Schur Complement

Astrid Casadei , Pierre Ramet

SIAM Conference on Applied Linear Algebra (SIAM LA 2012), Jun 2012, Valence, Spain

Communication dans un congrès hal-00769029v1

Development of an International Matrix-Solver Prediction System on a French-Japanese International Grid Computing Environment

Michel Daydé , Yoshio Suzuki , Noriyuki Kushida , Takayuki Tatekawa , Naoya Teshima et al.

Joint International Conference on Supercomputing in Nuclear Applications and Monte Carlo 2010 (SNA+MC2010 2010), Oct 2010, Tokyo (JP), Japan

Communication dans un congrès hal-04614671v1

A Non Overlapping Parallel Domain Decomposition Method Applied to The Simplified Transport Equations

Maxime Barrault , Bruno Lathuilière , Pierre Ramet , Jean Roman

International Conference on Mathematics, Computational Methods & Reactor Physics, 2009, New-York, United States

Communication dans un congrès inria-00346020v1

Non-Linear MHD simulations of Edge Localised Modes

G. Huysmans , Stanislas Pamela , Emiel van Der Plas , Pierre Ramet

36th EPS Plasma Physics Conference, Jun 2009, Sofia, Bulgaria

Communication dans un congrès inria-00403797v1

A NUMA Aware Scheduler for a Parallel Sparse Direct Solver

Mathieu Faverge , Xavier Lacoste , Pierre Ramet

PMAA'08, 2008, Neuchâtel, Switzerland

Communication dans un congrès inria-00344709v1

Toward an international sparse linear algebra expert system by interconnecting the ITBL computational Grid with the Grid-TLSE platform

Noriyuki Kushida , Yoshio Suzuki , Naoya Teshima , Norihiro Nakajima , Yves Caniou et al.

VECPAR 2008: 8th International Conference High Performance Computing for Computational Science, Jun 2008, Toulouse, France

Communication dans un congrès hal-00689964v1

A domain decomposition method for the resolution of an eigenvalue problem in neutron physics

Maxime Barrault , Bruno Lathuilière , Pierre Ramet , Jean Roman

International Symposium on Iterative Methods in Scientific Computing (IMACS), 2008, Lille, France

Communication dans un congrès inria-00346021v1

A Domain Decomposition Method Applied to Large Eigenvalue Problems in Neutron Physics

Maxime Barrault , Bruno Lathuilière , Pierre Ramet , Jean Roman

PMAA'08, 2008, Neuchatel, Switzerland

Communication dans un congrès inria-00346025v1
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Dynamic Scheduling for sparse direct Solver on NUMA architectures

Mathieu Faverge , Pierre Ramet

PARA'08, May 2008, Trondheim, Norway

Communication dans un congrès inria-00344026v1

A domain decomposition method applied to the simplified transport equations

Maxime Barrault , Bruno Lathuilière , Pierre Ramet , Jean Roman

IEEE 11th International Conference on Computational Science and Engineering, 2008, Sao Paulo, Brazil. pp.91--97

Communication dans un congrès inria-00346022v1

Tunable parallel experiments in a GridRPC framework: application to linear solvers

Yves Caniou , Jean-Sebastien Gay , Pierre Ramet

VECPAR'08, 2008, Toulouse, France. pp.46--52

Communication dans un congrès inria-00346611v1
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A NUMA Aware Scheduler for a Parallel Sparse Direct Solver

Mathieu Faverge , Pierre Ramet

Workshop on Massively Multiprocessor and Multicore Computers, INRIA, Feb 2009, Rocquencourt, France. 5p

Communication dans un congrès inria-00416502v1

Improvement of existing solvers for the simulation of MHD instabilities

Olivier Czarny , Pascal Hénon , Pierre Ramet , G. Huysmans

Numerical flow models for controlled fusion, 2007, Porquerolles, France

Communication dans un congrès inria-00346027v1

Efficient solution technique for low Mach number compressible multiphase problems

Benjamin Braconnier , Boniface Nkonga , Mickael Papin , Pierre Ramet , Mario Ricchiuto et al.

PMAA'06, 2006, Rennes, France

Communication dans un congrès inria-00346608v1

On finding approximate supernodes for an efficient ILU(k) factorization

Pascal Hénon , Pierre Ramet , Jean Roman

PMAA'06, 2006, Rennes, France

Communication dans un congrès inria-00346617v1

Partitioning and Blocking Issues for a Parallel Incomplete Factorization

Pascal Hénon , Pierre Ramet , Jean Roman

PARA'06, 2006, Umea, Sweden. pp.929--937

Communication dans un congrès inria-00346624v1

On using an hybrid MPI-Thread programming for the implementation of a parallel sparse direct solver on a network of SMP nodes

Pascal Hénon , Pierre Ramet , Jean Roman

Sixth International Conference on Parallel Processing and Applied Mathematics, Workshop HPC Linear Algebra, 2005, Poznan, Poland. pp.1050--1057

Communication dans un congrès inria-00346610v1

Blocking Issues for an Efficient Parallel Block ILU Preconditioner

Pascal Hénon , Francois Pellegrini , Pierre Ramet , Jean Roman

International SIAM Conference On Preconditioning Techniques For Large Sparse Matrix Problems In Scientific And Industrial Applications, 2005, Atlanta, United States

Communication dans un congrès inria-00346621v1

Applying parallel direct solver skills to build robust and highly performant preconditioners

Pascal Hénon , Francois Pellegrini , Pierre Ramet , Jean Roman , Yousef Saad

PARA'04, 2004, Copenhagen, Denmark. pp.601--619

Communication dans un congrès inria-00346623v1

A Blockwise Algorithm for Parallel Incomplete Cholesky Factorization

Pascal Hénon , Pierre Ramet , Jean Roman

PMAA'04, 2004, Marseille, France

Communication dans un congrès inria-00346616v1

Using of the High Performance Sparse Solver PaStiX for the Complex Multiscale 3D Simulations performed by the FluidBox Fluid Mechanics Software

Pascal Hénon , Boniface Nkonga , Pierre Ramet , Jean Roman

PMAA'04, 2004, Marseille, France

Communication dans un congrès inria-00346607v1

High Performance Complete and Incomplete Factorizations for Very Large Sparse Systems by using Scotch and PaStiX softwares

Pascal Hénon , Francois Pellegrini , Pierre Ramet , Jean Roman , Yousef Saad

Eleventh SIAM Conference on Parallel Processing for Scientific Computing, 2004, San Francisco, United States

Communication dans un congrès inria-00346622v1

Efficient algorithms for direct resolution of large sparse system on clusters of SMP nodes

Pascal Hénon , Pierre Ramet , Jean Roman

SIAM Conference on Applied Linear Algebra, 2003, Williamsburg, United States

Communication dans un congrès inria-00346609v1

Towards High Performance Hybrid Direct-Iterative Solvers for Large Sparse Systems

Pascal Hénon , Francois Pellegrini , Pierre Ramet , Jean Roman

International SIAM Conference On Preconditioning Techniques For Large Sparse Matrix Problems In Scientific And Industrial Applications, 2003, Napa Valley, United States

Communication dans un congrès inria-00346620v1

Asymptotically optimal algorithm for Laplace task graphs on heterogeneous platforms

Olivier Beaumont , Pierre Ramet , Jean Roman

Fifth International Conference on Parallel Processing and Applied Mathematics, Workshop HeteroPar, 2003, Czestochowa, Poland. pp.880--887

Communication dans un congrès inria-00346587v1

Parallel factorization of very large sparse SPD systems on a network of SMP nodes

Pascal Hénon , Pierre Ramet , Jean Roman

PMAA'02, 2002, Neuchatel, Switzerland

Communication dans un congrès inria-00346605v1

Optimisation de l'occupation mémoire pour un solveur parallèle creux direct hautes performances de type supernodal

Pascal Hénon , Pierre Ramet

RenPar'2002, 2002, Hamamet, Tunisie

Communication dans un congrès inria-00346596v1

Modélisation de pipelines hétérogènes

Olivier Beaumont , Vincent Boudet , Frédéric Desprez , Pierre Ramet , Jean Roman et al.

GRID'2002, 2002, Aussois, France

Communication dans un congrès inria-00346586v1

PaStiX: Un solveur parallèle direct pour des matrices creuses symétriques définies positives basé sur un ordonnancement statique performant et sur une gestion mémoire efficace

Pascal Hénon , Pierre Ramet

RenPar'2001, 2001, Paris, France

Communication dans un congrès inria-00346595v1

PaStiX: A Parallel Direct Solver for Sparse SPD Matrices based on Efficient Static Scheduling and Memory Managment

Pascal Hénon , Pierre Ramet , Jean Roman

Tenth SIAM Conference on Parallel Processing for Scientific Computing, 2001, Portsmouth, United States

Communication dans un congrès inria-00346598v1

Algèbre Linéaire Creuse Hautes Performances : Application à la Mécanique des Structures

David Goudin , Pascal Hénon , Francois Pellegrini , Pierre Ramet , Jean Roman et al.

iHPerf'2000, 2000, Aussois, France

Communication dans un congrès inria-00346604v1

PaStiX: A Parallel Sparse Direct Solver Based on a Static Scheduling for Mixed 1D/2D Block Distributions

Pascal Hénon , Pierre Ramet , Jean Roman

Irregular'2000 workshop of IPDPS, 2000, Cancun, Mexico. pp.519-525

Communication dans un congrès inria-00346594v1

Description of the EMILIO Software Processing Chain and Application to Structural Mechanics

David Goudin , Pascal Hénon , Francois Pellegrini , Pierre Ramet , Jean Roman et al.

PMAA'2K, 2000, Neuchatel, Switzerland

Communication dans un congrès inria-00346601v1

PaStiX: A High-Performance Parallel Direct Solver for Sparse Symmetric Definite Systems

Pascal Hénon , Pierre Ramet , Jean Roman

PMAA'2K, 2000, Neuchatel, Switzerland

Communication dans un congrès inria-00346600v1

A Mapping and Scheduling Algorithm for Parallel Sparse Fan-In Numerical Factorization

Pascal Hénon , Pierre Ramet , Jean Roman

EuroPar'99, 1999, Toulouse, France. pp.1059-1067

Communication dans un congrès inria-00346593v1

Optimisation des Communications et Régulation de Charge pour la Résolution par Méthode Directe de Grands Systèmes Linéaires Creux

Patrick Amestoy , Frédéric Desprez , Pierre Ramet , Jean Roman

ICaRE'97, 1997, Aussois, France. pp.467-488

Communication dans un congrès inria-00346472v1

Calcul de la suite optimale de taille de paquets pour la factorisation de Cholesky

Pierre Ramet

RenPar'9, 1997, Lausanne, Suisse. pp.111-114

Communication dans un congrès inria-00346581v1

Optimal Grain Size Computation for Pipelined Algorithms

Frédéric Desprez , Pierre Ramet , Jean Roman

Euro-Par'96, 1996, Lyon, France. pp.165-172

Communication dans un congrès inria-00346485v1

Calcul de la taille optimale des paquets pour les algorithmes macro-pipelines

Pierre Ramet

RenPar'8, 1996, Bordeaux, France. pp.21-24

Communication dans un congrès inria-00346477v1
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Partitionnement hiérarchique pour la simulation électromagnétique d'objets 3D complexes

Dimitri Walther , Mathieu Faverge , Matthieu Lecouvez , Pierre Ramet

COMPAS 2025 - Conférence francophone d'informatique en Parallélisme, Architecture et Système, Jun 2025, Bordeaux, France.

Poster de conférence cea-05132586v1
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Scalable and Portable LU Factorization with Partial Pivoting on top of Runtime Systems

Alycia Lisito , Mathieu Faverge , David Goudin , Matthieu Kuhn , Pierre Ramet

JCAD 2024 - journée calculs et données, Nov 2024, Bordeaux, France

Poster de conférence hal-04867213v1
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Sparse supernodal solver using block low-rank compression: Design, performance and analysis

Grégoire Pichon , Eric Darve , Mathieu Faverge , Esragul Korkmaz , Pierre Ramet et al.

JOREK development meeting, Nov 2019, Cadarache, France

Document associé à des manifestations scientifiques hal-02326407v1
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Utilisation de la compression low-rank pour réduire la complexité du solveur PaStiX

Grégoire Pichon , Mathieu Faverge , Pierre Ramet , Jean Roman

JCAD 2018 - Journées Calcul et Données, Oct 2018, Lyon, France

Document associé à des manifestations scientifiques hal-01956928v1
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Sparse supernodal solver with low-rank compression for solving the frequency-domain Maxwell equations discretized by a high order HDG method

Grégoire Pichon , Eric Darve , Mathieu Faverge , Stéphane Lanteri , Pierre Ramet et al.

Journées jeunes chercheur-e-s - Résolution de problèmes d’ondes harmoniques de grande taille, Nov 2017, PARIS, France. pp.1-55, 2017

Document associé à des manifestations scientifiques hal-01660653v1

Deflation and augmentation techniques in Krylov linear solvers

Olivier Coulaud , Luc Giraud , Pierre Ramet , Xavier Vasseur

Topping, B.H.V and Ivanyi, P. Developments in Parallel - Distributed - Grid and Cloud Computing for Engineering, Saxe-Coburg Publications, pp.249--275, 2013, 978-1-874672-62-3

Chapitre d'ouvrage hal-00860339v1
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Reaching the Quality of SVD for Low-Rank Compression Through QR Variants

Esragul Korkmaz , Mathieu Faverge , Grégoire Pichon , Pierre Ramet

[Research Report] RR-9476, Inria Bordeaux - Sud Ouest. 2022, pp.43

Rapport (rapport de recherche) hal-03718312v4
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Deciding Non-Compressible Blocks in Sparse Direct Solvers using Incomplete Factorization

Esragul Korkmaz , Mathieu Faverge , Grégoire Pichon , Pierre Ramet

[Research Report] RR-9396, Inria Bordeaux - Sud Ouest. 2021, pp.16

Rapport (rapport de recherche) hal-03152932v2
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Improving mapping for sparse direct solvers: A trade-off between data locality and load balancing

Changjiang Gou , Ali Al Zoobi , Anne Benoit , Mathieu Faverge , Loris Marchal et al.

[Research Report] RR-9328, Inria Rhône-Alpes. 2020, pp.21

Rapport (rapport de recherche) hal-02491495v1
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A hierarchical fast direct solver for distributed memory machines with manycore nodes

Cédric Augonnet , David Goudin , Matthieu Kuhn , Xavier Lacoste , Raymond Namyst et al.

[Research Report] CEA/DAM; Total E&P; Université de Bordeaux. 2019

Rapport (rapport de recherche) cea-02304706v1
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Supernodes ordering to enhance Block Low-Rank compression in sparse direct solvers

Grégoire Pichon , Eric Darve , Mathieu Faverge , Pierre Ramet , Jean Roman

[Research Report] RR-9238, Inria Bordeaux Sud-Ouest. 2018, pp.1-31

Rapport (rapport de recherche) hal-01961675v1
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Sparse Supernodal Solver Using Block Low-Rank Compression

Grégoire Pichon , Eric Darve , Mathieu Faverge , Pierre Ramet , Jean Roman

[Research Report] RR-9022, Inria Bordeaux Sud-Ouest. 2017, pp.24

Rapport (rapport de recherche) hal-01450732v3
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Efficient Parallel Solution of the 3D Stationary Boltzmann Transport Equation for Diffusive Problems

Salli Moustafa , François Févotte , Mathieu Faverge , Laurent Plagne , Pierre Ramet

[Research Report] RR-9116, Inria; EDF Lab. 2017, pp.22

Rapport (rapport de recherche) hal-01630208v2
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Sparse Supernodal Solver Using Block Low-Rank Compression: design, performance and analysis

Grégoire Pichon , Eric Darve , Mathieu Faverge , Pierre Ramet , Jean Roman

[Research Report] RR-9130, Inria Bordeaux Sud-Ouest. 2017, pp.1-32

Rapport (rapport de recherche) hal-01660665v1
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Reordering strategy for blocking optimization in sparse linear solvers

Grégoire Pichon , Mathieu Faverge , Pierre Ramet , Jean Roman

[Research Report] RR-8860, Inria Bordeaux Sud-Ouest; LaBRI - Laboratoire Bordelais de Recherche en Informatique; Bordeaux INP; Université de Bordeaux. 2016, pp.26

Rapport (rapport de recherche) hal-01276746v2
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Simul'Elec and PASTIX interface specifications

Maher Alaya , Mathieu Faverge , Xavier Lacoste , Alexandre Péré-Laperne , Jacques Péré-Laperne et al.

[Rapport Technique] RT-0458, INRIA Bordeaux; AlgoTech; INRIA. 2015

Rapport (rapport technique) hal-01142204v1
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Amélioration du comportement numérique des solveurs en prenant en compte les poids de la matrice lors de la décomposition de domaines

Sébastien Fourestier , François Pellegrini , Pierre Ramet

[Rapport Technique] RT-0445, INRIA. 2014, pp.58

Rapport (rapport technique) hal-00967676v1
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Taking advantage of hybrid systems for sparse direct solvers via task-based runtimes

Xavier Lacoste , Mathieu Faverge , Pierre Ramet , Samuel Thibault , George Bosilca

[Research Report] RR-8446, INRIA. 2014, pp.25

Rapport (rapport de recherche) hal-00925017v2
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Adaptive mesh refinement for numerical simulation of MHD instabilities in tokamaks: JOREK code

Hocine Sellama , Guido Huijsmans , Pierre Ramet

[Research Report] RR-8635, INRIA Bordeaux; INRIA. 2014, pp.18

Rapport (rapport de recherche) hal-01088094v1
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An improved recursive graph bipartitioning algorithm for well balanced domain decomposition

Astrid Casadei , Pierre Ramet , Jean Roman

[Research Report] RR-8582, INRIA. 2014, pp.29

Rapport (rapport de recherche) hal-01056749v1
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Deflation and augmentation techniques in Krylov linear solvers

Olivier Coulaud , Luc Giraud , Pierre Ramet , Xavier Vasseur

[Research Report] RR-8265, INRIA. 2013, 25 p

Rapport (rapport de recherche) hal-00803225v1
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Non regression testing for the JOREK code

Guillaume Latu , Marina Becoulet , Guilhem Dif-Pradalier , Virginie Grandgirard , Matthias Hoelzl et al.

[Research Report] RR-8134, INRIA. 2012, pp.17

Rapport (rapport de recherche) hal-00752270v1
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Sparse direct solvers with accelerators over DAG runtimes

Xavier Lacoste , Pierre Ramet , Mathieu Faverge , Yamazaki Ichitaro , Jack Dongarra

[Research Report] RR-7972, INRIA. 2012, pp.11

Rapport (rapport de recherche) hal-00700066v2
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Memory Optimization to Build a Schur Complement in an Hybrid Solver

Astrid Casadei , Pierre Ramet

[Research Report] RR-7971, INRIA. 2012, pp.11

Rapport (rapport de recherche) hal-00700053v2
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A NUMA Aware Scheduler for a Parallel Sparse Direct Solver

Mathieu Faverge , Xavier Lacoste , Pierre Ramet

[Research Report] RR-7498, INRIA. 2010, pp.22

Rapport (rapport de recherche) inria-00549827v1

SCILAB to SCILAB// - The Ouragan Project

Eddy Caron , Serge Chaumette , Sylvain Contassot-Vivier , Frédéric Desprez , Eric Fleury et al.

[Research Report] RR-2001-24, LIP - ENS Lyon. 2001

Rapport (rapport de recherche) hal-01436419v1
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SCILAB to SCILAB// - The Ouragan Project

Frédéric Desprez , Martin Quinson , Frédéric Suter , Eric Fleury , Emmanuel Jeannot et al.

[Research Report] RR-4203, INRIA. 2001

Rapport (rapport de recherche) inria-00072419v1
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Heterogeneous architectures, Hybrid methods, Hierarchical matrices for Sparse Linear Solvers

Pierre Ramet

Distributed, Parallel, and Cluster Computing [cs.DC]. Université de Bordeaux, 2017

HDR tel-01668740v2