Pierre Ramet

Pierre RAMET - Responsable du département SATANAS (Supports et Algorithms pour les Applications Numériques Hautes Performances)
124
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

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-03352509 v1
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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-02080624 v1
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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-01824275 v1
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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-01485507 v2
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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-00986975 v1
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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-00547406 v1
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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-00547413 v1

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-01251754 v1

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-00346018 v1

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-00346017 v1

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-00000277 v1

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-00346016 v1
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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-04984070 v1
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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-04620993 v1
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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-04527103 v1

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-04585047 v1
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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-04589448 v1
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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-04046622 v1

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-04046630 v1
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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-03361299 v1
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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-02973315 v1

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-03140189 v1

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-01956962 v1

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-02326070 v1
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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-02139186 v1

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-02326084 v1

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-01956963 v1
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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-01956959 v1
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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-01956960 v1
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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-01502215 v1

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-01421379 v1
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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-01585622 v1

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-01421384 v1

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-01421383 v1

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-01251812 v1

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-01251808 v1

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-01421368 v1

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-01421376 v1

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-01421372 v1
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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-01078362 v1

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-01100985 v1

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-01187881 v1

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-01100990 v1

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-01187882 v1

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-01100987 v1

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-01100979 v1
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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-00987099 v1
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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-01078364 v1
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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-00987094 v1

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-00987110 v1
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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-01100962 v1
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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-00924989 v2
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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-00924979 v1
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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-00924977 v1

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-00769027 v1

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-00769026 v1

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-00769030 v1

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-00769029 v1

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-04614671 v1

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-00346020 v1

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-00403797 v1

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-00346022 v1

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-00344709 v1

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-00689964 v1
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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-00344026 v1

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-00346021 v1

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-00346025 v1

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-00346611 v1
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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-00416502 v1

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-00346027 v1

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-00346608 v1

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-00346617 v1

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-00346624 v1

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-00346610 v1

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-00346621 v1

A Blockwise Algorithm for Parallel Incomplete Cholesky Factorization

Pascal Hénon , Pierre Ramet , Jean Roman
PMAA'04, 2004, Marseille, France
Communication dans un congrès inria-00346616 v1

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-00346623 v1

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-00346607 v1

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-00346622 v1

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-00346609 v1

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-00346620 v1

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-00346587 v1

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-00346605 v1

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-00346596 v1

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-00346586 v1

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-00346595 v1

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-00346598 v1

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-00346604 v1

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-00346594 v1

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-00346601 v1

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-00346600 v1

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-00346593 v1

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-00346472 v1

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-00346581 v1

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-00346485 v1

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-00346477 v1
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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-02326407 v1
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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-01956928 v1
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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-01660653 v1

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-00860339 v1
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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-03718312 v4
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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-03152932 v2
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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-02491495 v1
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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-02304706 v1
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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-01961675 v1
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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-01450732 v3
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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-01630208 v2
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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-01660665 v1
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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-01276746 v2
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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-01142204 v1
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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-00967676 v1
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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-00925017 v2
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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-01088094 v1
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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-01056749 v1
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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-00803225 v1
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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-00752270 v1
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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-00700066 v2
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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-00700053 v2
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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-00549827 v1

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-01436419 v1
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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-00072419 v1
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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-01668740 v2