Gregoire Pichon

Publications

Article dans une revue (3)

Trading Performance for Memory in Sparse Direct Solvers using Low-rank Compression Loris Marchal,Thibault Marette,Grégoire Pichon,Frédéric Vivien Future Generation Computer Systems, 2022, 130, pp.307-320. ⟨10.1016/j.future.2021.12.018⟩ Article dans une revue hal-03517124v1
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
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

Communication dans un congrès (27)

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
Engineering fast algorithms for the bottleneck matching problem Ioannis Panagiotas,Grégoire Pichon,Somesh Singh,Bora Uçar ESA 2023 - The 31st Annual European Symposium on Algorithms, Sep 2023, Amsterdam (Hollande), Netherlands Communication dans un congrès hal-04146298v2
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
Exploiting Generic Tiled Algorithms Toward Scalable H-Matrices Factorizations on Top of Runtime Systems Rocío Carratalá-Sáez,Mathieu Faverge,Grégoire Pichon,Enrique Salvador Quintana-Ortí,Guillaume Sylvand SIAM PP20 - SIAM Conference on Parallel Processing for Scientific Computing, Feb 2020, Seattle, United States Communication dans un congrès hal-03149953v1
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 Marchalet 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
Tiled Algorithms for Efficient Task-Parallel H-Matrix Solvers Rocío Carratalá-Sáez,Mathieu Faverge,Grégoire Pichon,Guillaume Sylvand,Enrique S Quintana-Ortí PDSEC 2020 - 21st IEEE International Workshop on Parallel and Distributed Scientific and Engineering Computing, May 2020, News Orleans, United States. pp.1-10 Communication dans un congrès hal-02513433v1
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
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 Sparse Days 2019, Jul 2019, Toulouse, France Communication dans un congrès hal-02326070v1
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
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
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
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 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
Utilisation de la compression Block Low-Rank pour accélérer un solveur direct creux supernodal Grégoire Pichon Conférence d’informatique en Parallélisme, Architecture et Système (ComPAS'17), Jun 2017, Sophia Antipolis, France Communication dans un congrès hal-01585660v1
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
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
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
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
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
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
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
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
Divide and Conquer Symmetric Tridiagonal Eigensolver for Multicore Architectures Grégoire Pichon,Azzam Haidar,Mathieu Faverge,Jakub Kurzak IEEE International Parallel & Distributed Processing Symposium (IPDPS 2015), May 2015, Hyderabad, India Communication dans un congrès hal-01078356v3
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

Document associé à des manifestations scientifiques (3)

Sparse supernodal solver using block low-rank compression: Design, performance and analysis Grégoire Pichon,Eric Darve,Mathieu Faverge,Esragul Korkmaz,Pierre Rametet al. JOREK development meeting, Nov 2019, Cadarache, France Document associé à des manifestations scientifiques hal-02326407v1
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
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 Rametet 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

Pré-publication, Document de travail (1)

BLAS-based Block Memory Accessor with Applications to Mixed Precision Sparse Direct Solvers Patrick Amestoy,Antoine Jego,Jean-Yves L'Excellent,Théo Mary,Grégoire Pichon 2025 Pré-publication, Document de travail hal-05019106v1

Rapport (9)

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
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
Trading Performance for Memory in Sparse Direct Solvers using Low-rank Compression Loris Marchal,Thibault Marette,Grégoire Pichon,Frédéric Vivien [Research Report] RR-9368, INRIA. 2020 Rapport (rapport de recherche) hal-02976233v1
Tiled Algorithms for Efficient Task-Parallel H-Matrix Solvers Rocío Carratalá-Sáez,Mathieu Faverge,Grégoire Pichon,Guillaume Sylvand,Enrique S Quintana-Ortí [Research Report] RR-9327, Inria. 2020 Rapport (rapport de recherche) hal-02489269v1
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 Marchalet al. [Research Report] RR-9328, Inria Rhône-Alpes. 2020, pp.21 Rapport (rapport de recherche) hal-02491495v1
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
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
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
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

Thèse (1)

On the use of low-rank arithmetic to reduce the complexity of parallel sparse linear solvers based on direct factorization techniques Grégoire Pichon Data Structures and Algorithms [cs.DS]. Université de Bordeaux, 2018. English. ⟨NNT : 2018BORD0249⟩ Thèse tel-01953908v2