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Pierre Ramet
Pierre RAMET - Head of the SATANAS Department (Supports and Algorithms for High Performance Numerical Applications)
122
Documents
Current affiliations
- 259761
- 104751
- 3102
- 440172
- 1124391
Researcher identifiers
- pierre-ramet
- IdRef : 189029668
- 0000-0002-6179-9819
Presentation
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](https://solverstack.gitlabpages.inria.fr/pastix "PaStiX")) qui implémente un solveur direct creux haute performance.
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My interests span high-performance computing, focusing on sparse linear algebra. I am the developer of PaStiX ([https://solverstack.gitlabpages.inria.fr/pastix](https://solverstack.gitlabpages.inria.fr/pastix "PaStiX")), a high-performance sparse direct solver.
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Research domains
Computer Science [cs]
Numerical Analysis [math.NA]
Skills
Sparse Linear Algebra
Parallel Algorithms
Scientific Computing
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Enhancing sparse direct solver scalability through runtime system automatic data partitionWAMTA 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⟩
Conference papers
hal-04527103v1
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Slides 18th CMCIM 2024, Toward an algebraic multigrid method for the indefinite Helmholtz equation18th Copper Mountain Conference On Iterative Methods, Apr 2024, Frisco (Co), United States
Conference papers
cea-04620993v1
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Comparative Study of Mixed-Precision and Low-Rank Compression Techniques in Sparse Direct Solvers2024 SIAM Conference on Applied Linear Algebra, Society for Industrial and Applied Mathematics, May 2024, Paris, France
Conference papers
hal-04585047v1
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New parallel features in the sparse solver PaStiXSparse Days 2023, Jun 2023, Toulouse, France
Conference papers
hal-04589448v1
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Student Paper Competition, Copper Mountain Conference 2023 - Toward a multilevel method for the Helmholtz equation21st SIAM Copper Mountain Conference on Multigrid Method, Apr 2023, Copper Mountain, CO, United States
Conference papers
hal-04046622v1
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Slides, SIAM CSE 2023 - Toward a multilevel method for the Helmholtz EquationCSE 2023 - SIAM Conference on Computational Science and Engineering, Feb 2023, Amsterdam, Netherlands
Conference papers
hal-04046630v1
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Deciding Non-Compressible Blocks in Sparse Direct Solvers using Incomplete FactorizationHiPC 2021 - 28th IEEE International Conference on High Performance Computing, Data, and Analytics, Dec 2021, Bangalore, India. pp.1-10, ⟨10.1109/HiPC53243.2021.00024⟩
Conference papers
hal-03361299v1
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Improving mapping for sparse direct solvers: A trade-off between data locality and load balancingEuroPar 2020 - 26th International European Conference on Parallel and Distributed Computing, Aug 2020, Warsaw / Virtual, Poland. pp.1-16
Conference papers
hal-02973315v1
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Recent Developments Around the Block Low-Rank PaStiX SolverPP 2020 - SIAM Conference on Parallel Processing for Scientific Computing, Feb 2020, Seattle, United States
Conference papers
hal-03140189v1
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Exploiting Parameterized Task-graph in Sparse Direct SolversSIAM Conference on Computational Science and Engineering (CSE19), Feb 2019, Spokane, United States
Conference papers
hal-01956963v1
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Rank Revealing QR Methods for Sparse Block Low Rank SolversCOMPAS 2019 - Conférence d'informatique en Parallélisme, Architecture et Système, Jun 2019, Anglet, France
Conference papers
hal-02326084v1
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Block Low Rank Algebraic Clustering for Sparse Direct SolversJournées Ondes Sud-Ouest (JOSO), Mar 2019, Le Barp, France
Conference papers
hal-02139186v1
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Block Low-rank Algebraic Clustering for Sparse Direct SolversSIAM Conference on Computational Science and Engineering (CSE19), Feb 2019, Spokane, United States
Conference papers
hal-01956962v1
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Rank Revealing QR Methods for Sparse Block Low Rank SolversSparse Days 2019, Jul 2019, Toulouse, France
Conference papers
hal-02326070v1
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Utilisation de la compression Block Low-Rank pour accélérer un solveur direct creux supernodalCOMPAS 2018 - Conférence d'informatique en Parallélisme, Architecture et Système, Jul 2018, Toulouse, France
Conference papers
hal-01956959v1
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Supernodes ordering to enhance Block Low-Rank compression in sparse direct solversPMAA 2018 - 10th International Workshop on Parallel Matrix Algorithms and Applications, Jun 2018, Zurich, Switzerland
Conference papers
hal-01956960v1
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Exploiting Modern Manycore Architecture in Sparse Direct Solver with Runtime SystemsSIAM Conference on Computation Science and Engineering (CSE'17), Feb 2017, Atlanta, United States
Conference papers
hal-01421383v1
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Impact of Blocking Strategies for Sparse Direct Solvers on Top of Generic RuntimesSIAM Conference on Computation Science and Engineering (CSE'17), Feb 2017, Atlanta, United States
Conference papers
hal-01421384v1
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Sparse Supernodal Solver exploiting Low-Rankness PropertySparse Days 2017, Sep 2017, Toulouse, France
Conference papers
hal-01585622v1
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Sparse Supernodal Solver Using Block Low-Rank Compression18th IEEE International Workshop on Parallel and Distributed Scientific and Engineering Computing (PDSEC 2017), Jun 2017, Orlando, United States
Conference papers
hal-01502215v1
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Sparse Supernodal Solver Using Hierarchical Compression over Runtime SystemSIAM Conference on Computation Science and Engineering (CSE'17), Feb 2017, Atlanta, United States
Conference papers
hal-01421379v1
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On the use of low rank approximations for sparse direct solversSIAM Annual Meeting (AN'16), Jul 2016, Boston, United States
Conference papers
hal-01421376v1
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Exploiting H-Matrices in Sparse Direct SolversSIAM Conference on Parallel Processing for Scientific Computing (SIAM PP 2016), Apr 2016, Paris, France
Conference papers
hal-01251812v1
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Exploiting Kepler architecture in sparse direct solver with runtime systems9th International Workshop on Parallel Matrix Algorithms and Applications (PMAA'2016), Jul 2016, Bordeaux, France
Conference papers
hal-01421372v1
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Sparse Supernodal Solver Using Hierarchical CompressionWorkshop on Fast Direct Solvers, Nov 2016, Purdue, United States
Conference papers
hal-01421368v1
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Impact of Blocking Strategies for Sparse Direct Solvers on Top of Generic RuntimesSIAM Conference on Parallel Processing for Scientific Computing (SIAM PP 2016), Apr 2016, Paris, France
Conference papers
hal-01251808v1
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On the design of parallel linear solvers for large scale problemsMini-Symposium on Recent advances in matrix computations for extreme-scale computers at ICIAM'15 conference, Aug 2015, Beijing, China
Conference papers
hal-01100987v1
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On the use of H-Matrix Arithmetic in PaStiX: a Preliminary StudyWorkshop on Fast Direct Solvers, Jun 2015, Toulouse, France
Conference papers
hal-01187882v1
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Towards a recursive graph bipartitioning algorithm for well balanced domain decompositionMini-Symposium on "Combinatorial Issues in Sparse Matrix Computation" at ICIAM'15 conference, Aug 2015, Beijing, China
Conference papers
hal-01100990v1
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Blocking strategy optimizations for sparse direct linear solver on heterogeneous architecturesSparse Days, Jun 2015, Saint Girons, France
Conference papers
hal-01187881v1
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3D Cartesian Transport Sweep for Massively Parallel Architectures with PARSECIEEE International Parallel & Distributed Processing Symposium (IPDPS 2015), May 2015, Hyderabad, India. pp.581-590, ⟨10.1109/IPDPS.2015.75⟩
Conference papers
hal-01078362v1
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Towards a recursive graph bipartitioning algorithm for well balanced domain decompositionSIAM Conference on Computational Science and Engineering (SIAM CSE 2015), Mar 2015, Salt Lake City, United States
Conference papers
hal-01100985v1
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A task-based sparse direct solver suited for large scale hierarchical/heterogeneous architecturesSIAM Conference on Computational Science and Engineering (SIAM CSE 2015), Mar 2015, Salt Lake City, United States
Conference papers
hal-01100979v1
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Toward parallel scalable linear solvers suited for large scale hierarchical parallel platformsWorld Congress on Computational Mechanics, Jul 2014, Barcelona, Spain
Conference papers
hal-00987110v1
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Taking advantage of hybrid systems for sparse direct solvers via task-based runtimesHCW'2014 workshop of IPDPS, May 2014, Phoenix, United States. pp.29-38, ⟨10.1109/IPDPSW.2014.9⟩
Conference papers
hal-00987094v1
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Parallel 3D Sweep Kernel with PARSECHPCC Workshop on HPC-CFD in Energy/Transport Domains, Aug 2014, Paris, France
Conference papers
hal-01078364v1
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An improved recursive graph bipartitioning algorithm for well balanced domain decompositionIEEE International Conference on High Performance Computing (HiPC 2014), Dec 2014, Goa, India. pp.1-10, ⟨10.1109/HiPC.2014.7116878⟩
Conference papers
hal-01100962v1
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Nested dissection with balanced haloSixth SIAM Workshop on Combinatorial Scientific Computing, Jul 2014, Lyon, France
Conference papers
hal-00987099v1
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From hybrid architectures to hybrid solversWorkshop Celebrating 40 Years of Nested Dissection, Jul 2013, Waterloo, Canada
Conference papers
hal-00924979v1
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Shared Memory Parallelism for 3D Cartesian Discrete Ordinates SolverJoint International Conference on Supercomputing in Nuclear Applications and Monte Carlo 2013, Oct 2013, Paris, France
Conference papers
hal-00924989v2
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Towards Domain Decomposition with Balanced HaloWorkshop Celebrating 40 Years of Nested Dissection, Jul 2013, Waterloo, Canada
Conference papers
hal-00924977v1
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Toward a supernodal sparse direct solver over DAG runtimesParallel Matrix Algorithms and Applications, Jun 2012, Londres, United Kingdom
Conference papers
hal-00769030v1
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Sparse direct solver on top of large-scale multicore systems with GPU acceleratorsSIAM Conference on Applied Linear Algebra (SIAM LA 2012), Jun 2012, Valence, Spain
Conference papers
hal-00769027v1
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Fine Grain Scheduling for Sparse Solver on Manycore ArchitecturesSIAM Conference on Parallel Processing for Scientific Computing (SIAM PP 2012), Feb 2012, Savannah, United States
Conference papers
hal-00769026v1
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Memory Optimization to Build a Schur ComplementSIAM Conference on Applied Linear Algebra (SIAM LA 2012), Jun 2012, Valence, Spain
Conference papers
hal-00769029v1
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Development of an International Matrix-Solver Prediction System on a French-Japanese International Grid Computing EnvironmentJoint International Conference on Supercomputing in Nuclear Applications and Monte Carlo 2010 (SNA+MC2010 2010), Oct 2010, Tokyo (JP), Japan
Conference papers
hal-04614671v1
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A NUMA Aware Scheduler for a Parallel Sparse Direct SolverWorkshop on Massively Multiprocessor and Multicore Computers, INRIA, Feb 2009, Rocquencourt, France. 5p
Conference papers
inria-00416502v1
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Non-Linear MHD simulations of Edge Localised Modes36th EPS Plasma Physics Conference, Jun 2009, Sofia, Bulgaria
Conference papers
inria-00403797v1
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A Non Overlapping Parallel Domain Decomposition Method Applied to The Simplified Transport EquationsInternational Conference on Mathematics, Computational Methods & Reactor Physics, 2009, New-York, United States
Conference papers
inria-00346020v1
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Tunable parallel experiments in a GridRPC framework: application to linear solversVECPAR'08, 2008, Toulouse, France. pp.46--52
Conference papers
inria-00346611v1
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A domain decomposition method applied to the simplified transport equationsIEEE 11th International Conference on Computational Science and Engineering, 2008, Sao Paulo, Brazil. pp.91--97
Conference papers
inria-00346022v1
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A domain decomposition method for the resolution of an eigenvalue problem in neutron physicsInternational Symposium on Iterative Methods in Scientific Computing (IMACS), 2008, Lille, France
Conference papers
inria-00346021v1
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A Domain Decomposition Method Applied to Large Eigenvalue Problems in Neutron PhysicsPMAA'08, 2008, Neuchatel, Switzerland
Conference papers
inria-00346025v1
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Dynamic Scheduling for sparse direct Solver on NUMA architecturesPARA'08, May 2008, Trondheim, Norway
Conference papers
inria-00344026v1
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Toward an international sparse linear algebra expert system by interconnecting the ITBL computational Grid with the Grid-TLSE platformVECPAR 2008: 8th International Conference High Performance Computing for Computational Science, Jun 2008, Toulouse, France
Conference papers
hal-00689964v1
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A NUMA Aware Scheduler for a Parallel Sparse Direct SolverPMAA'08, 2008, Neuchâtel, Switzerland
Conference papers
inria-00344709v1
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Improvement of existing solvers for the simulation of MHD instabilitiesNumerical flow models for controlled fusion, 2007, Porquerolles, France
Conference papers
inria-00346027v1
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Partitioning and Blocking Issues for a Parallel Incomplete FactorizationPARA'06, 2006, Umea, Sweden. pp.929--937
Conference papers
inria-00346624v1
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On finding approximate supernodes for an efficient ILU(k) factorizationPMAA'06, 2006, Rennes, France
Conference papers
inria-00346617v1
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Efficient solution technique for low Mach number compressible multiphase problemsPMAA'06, 2006, Rennes, France
Conference papers
inria-00346608v1
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On using an hybrid MPI-Thread programming for the implementation of a parallel sparse direct solver on a network of SMP nodesSixth International Conference on Parallel Processing and Applied Mathematics, Workshop HPC Linear Algebra, 2005, Poznan, Poland. pp.1050--1057
Conference papers
inria-00346610v1
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Blocking Issues for an Efficient Parallel Block ILU PreconditionerInternational SIAM Conference On Preconditioning Techniques For Large Sparse Matrix Problems In Scientific And Industrial Applications, 2005, Atlanta, United States
Conference papers
inria-00346621v1
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High Performance Complete and Incomplete Factorizations for Very Large Sparse Systems by using Scotch and PaStiX softwaresEleventh SIAM Conference on Parallel Processing for Scientific Computing, 2004, San Francisco, United States
Conference papers
inria-00346622v1
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Using of the High Performance Sparse Solver PaStiX for the Complex Multiscale 3D Simulations performed by the FluidBox Fluid Mechanics SoftwarePMAA'04, 2004, Marseille, France
Conference papers
inria-00346607v1
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A Blockwise Algorithm for Parallel Incomplete Cholesky FactorizationPMAA'04, 2004, Marseille, France
Conference papers
inria-00346616v1
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Applying parallel direct solver skills to build robust and highly performant preconditionersPARA'04, 2004, Copenhagen, Denmark. pp.601--619
Conference papers
inria-00346623v1
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Towards High Performance Hybrid Direct-Iterative Solvers for Large Sparse SystemsInternational SIAM Conference On Preconditioning Techniques For Large Sparse Matrix Problems In Scientific And Industrial Applications, 2003, Napa Valley, United States
Conference papers
inria-00346620v1
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Asymptotically optimal algorithm for Laplace task graphs on heterogeneous platformsFifth International Conference on Parallel Processing and Applied Mathematics, Workshop HeteroPar, 2003, Czestochowa, Poland. pp.880--887
Conference papers
inria-00346587v1
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Efficient algorithms for direct resolution of large sparse system on clusters of SMP nodesSIAM Conference on Applied Linear Algebra, 2003, Williamsburg, United States
Conference papers
inria-00346609v1
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Modélisation de pipelines hétérogènesGRID'2002, 2002, Aussois, France
Conference papers
inria-00346586v1
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Optimisation de l'occupation mémoire pour un solveur parallèle creux direct hautes performances de type supernodalRenPar'2002, 2002, Hamamet, Tunisie
Conference papers
inria-00346596v1
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Parallel factorization of very large sparse SPD systems on a network of SMP nodesPMAA'02, 2002, Neuchatel, Switzerland
Conference papers
inria-00346605v1
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PaStiX: A Parallel Direct Solver for Sparse SPD Matrices based on Efficient Static Scheduling and Memory ManagmentTenth SIAM Conference on Parallel Processing for Scientific Computing, 2001, Portsmouth, United States
Conference papers
inria-00346598v1
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PaStiX: Un solveur parallèle direct pour des matrices creuses symétriques définies positives basé sur un ordonnancement statique performant et sur une gestion mémoire efficaceRenPar'2001, 2001, Paris, France
Conference papers
inria-00346595v1
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PaStiX: A High-Performance Parallel Direct Solver for Sparse Symmetric Definite SystemsPMAA'2K, 2000, Neuchatel, Switzerland
Conference papers
inria-00346600v1
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Description of the EMILIO Software Processing Chain and Application to Structural MechanicsPMAA'2K, 2000, Neuchatel, Switzerland
Conference papers
inria-00346601v1
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PaStiX: A Parallel Sparse Direct Solver Based on a Static Scheduling for Mixed 1D/2D Block DistributionsIrregular'2000 workshop of IPDPS, 2000, Cancun, Mexico. pp.519-525
Conference papers
inria-00346594v1
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Algèbre Linéaire Creuse Hautes Performances : Application à la Mécanique des StructuresiHPerf'2000, 2000, Aussois, France
Conference papers
inria-00346604v1
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A Mapping and Scheduling Algorithm for Parallel Sparse Fan-In Numerical FactorizationEuroPar'99, 1999, Toulouse, France. pp.1059-1067
Conference papers
inria-00346593v1
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Calcul de la suite optimale de taille de paquets pour la factorisation de CholeskyRenPar'9, 1997, Lausanne, Suisse. pp.111-114
Conference papers
inria-00346581v1
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Optimisation des Communications et Régulation de Charge pour la Résolution par Méthode Directe de Grands Systèmes Linéaires CreuxICaRE'97, 1997, Aussois, France. pp.467-488
Conference papers
inria-00346472v1
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Calcul de la taille optimale des paquets pour les algorithmes macro-pipelinesRenPar'8, 1996, Bordeaux, France. pp.21-24
Conference papers
inria-00346477v1
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Optimal Grain Size Computation for Pipelined AlgorithmsEuro-Par'96, 1996, Lyon, France. pp.165-172
Conference papers
inria-00346485v1
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Sparse supernodal solver using block low-rank compression: Design, performance and analysisJOREK development meeting, Nov 2019, Cadarache, France
Documents associated with scientific events
hal-02326407v1
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Utilisation de la compression low-rank pour réduire la complexité du solveur PaStiXJCAD 2018 - Journées Calcul et Données, Oct 2018, Lyon, France
Documents associated with scientific events
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 methodJournées jeunes chercheur-e-s - Résolution de problèmes d’ondes harmoniques de grande taille, Nov 2017, PARIS, France. pp.1-55, 2017
Documents associated with scientific events
hal-01660653v1
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Deflation and augmentation techniques in Krylov linear solversTopping, 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
Book sections
hal-00860339v1
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Toward an algebraic multigrid method for the indefinite Helmholtz equation2024
Preprints, Working Papers, ...
cea-04620991v2
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Heterogeneous architectures, Hybrid methods, Hierarchical matrices for Sparse Linear SolversDistributed, Parallel, and Cluster Computing [cs.DC]. Université de Bordeaux, 2017
Habilitation à diriger des recherches
tel-01668740v2
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