Heads : Ehouarn SIMON
and Olivier COTS
The APO team (Parallel Algorithms and optimization) works mainly along the following 5 axes:
- new methods for solving large linear systems and their applications to simulation
- optimal control and its applications to the design of optimal trajectories
- global optimization
- mathematical and computational aspects of artificial intelligence and processing of large data sets
- optimization for large problems and data assimilation
The team is also strongly involved in the LabEx CIMI (Laboratory of Excellence). A joint team exists between IRIT and IMT. This is the CASI team focused on scientific computation and numerical simulation.
Since 2014, the APO team and the ALGO team at Cerfacs have also set up a joint laboratory. The objective of this common laboratory is to analyse and implement methods to solve problems of interest to Cerfacs, IRIT and their partners. The joint laboratory currently consists of some 20 people, including eight permanent staff from both institutions.
The team is also involved in the 3IA ANITI Institute (Toulouse Artificial and Natural Institute). This project is centred on the introduction of physical constraints into machine learning algorithms and exploring the associated high-performance computing issues.
Background: The team was created and coordinated by Joseph Noailles. It was then administered by Patrick Amestoy and Serge Gratton.
skills
team Members
- Alfredo BUTTARISenior Researcher – CNRS
- Olivier COTSAssociate Professor – Toulouse INP
- Michel DAYDÉProfessor Emérite (HDR) – Toulouse INP
- Joseph GERGAUDProfessor Emérite (HDR) – Toulouse INP
- Serge GRATTONProfessor – Toulouse INP
- Ronan GUIVARCHAssociate Professor – Toulouse INP
- Julien HERRMANNResearch Scientist – CNRS
- Sandrine MOUYSSETAssociate Professor – UT3
- Daniel RUIZAssociate Professor – Toulouse INP
- Ehouarn SIMONAssociate Professor (HDR) – Toulouse INP
- Pierre SPITÉRIProfessor Emérite (HDR) – Toulouse INP
- Sixin ZHANGAssociate Professor – Toulouse INP
- Mahmoud AL NAJARContractual Researcher – Toulouse INP
- Philippe ALLETPhD Student – UT3 (joint direction SAMOVA)
- Theo BEUZEVILLETeacher-researcher Temporary Research Assistant – Toulouse INP
- Jeremy BRIANTPhD Student – Toulouse INP
- Alexandre DUPAQUISPhD Student – Toulouse INP
- Remy DUTTOPhD Student – Toulouse INP
- Nicolas ERNOUTPhD Student – Toulouse INP
- Astrid GUILIANIIntern niveau licence – Toulouse INP
- Sadok JERADContractual Researcher – Toulouse INP
- Sophie MAURANPhD Student – Toulouse INP
- Valentin MERCIERPhD Student – Toulouse INP
- Mortimer MEUNIERIntern niveau M1 – Toulouse INP
- Jules MORATAResearch Engineer – INSERM
- Haï Vy NGUYENPhD Student – Toulouse INP
- Mathis PEYRONPhD Student – UFT
- Justin REVERDIPhD Student – Toulouse INP
- Patrick AMESTOYAssociate teacher-researcher – Autre
- Iain DUFFAssociate teacher-researcher – Toulouse INP
- Pierre JOLIVETGuest Researcher – CNRS
- Jean-Yves L’EXCELLENTGuest Researcher – Autre
- Philippe TOINTAssociate teacher-researcher – Université de Namur – Belgique
team publications
Patrick Amestoy, Olivier Boiteau, Alfredo Buttari, Matthieu Gerest, Fabienne Jézéquel, Jean-Yves L’excellent, Théo Mary
Communication Avoiding Block Low-Rank Parallel Multifrontal Triangular Solve with Many Right-Hand Sides
SIAM Journal on Matrix Analysis and Applications, 2024, 45 (1), pp.148-166. ⟨10.1137/23M1568600⟩
Patrick Amestoy, Alfredo Buttari, Nicholas Higham, Jean-Yves L’excellent, Théo Mary, Bastien Vieublé
Five-Precision GMRES-based iterative refinement
SIAM Journal on Matrix Analysis and Applications, 2024, 45 (1), pp.529–552. ⟨10.1137/23M1549079⟩
M.A. Rahhali, Thierry Garcia, Pierre Spitéri
Parallel cloud solution of large algebraic multivalued systems
Applied Numerical Mathematics, In press, ⟨10.1016/j.apnum.2024.03.012⟩
Antoine Bernigaud, Serge Gratton, Ehouarn Simon
A non-linear conjugate gradient in dual space for Lp-norm regularized non-linear least squares with application in data assimilation
Numerical Algorithms, 2024, 95, pp.471-497. ⟨10.1007/s11075-023-01578-x⟩
Thanh Huy Nguyen, Sophie Ricci, Andrea Piacentini, Ehouarn Simon, Raquel Rodriguez-Suquet, Santiago Peña Luque
Gaussian Anamorphosis for Ensemble Kalman Filter Analysis of SAR-Derived Wet Surface Ratio Observations
IEEE Transactions on Geoscience and Remote Sensing, 2024, 62, pp.1-21. ⟨10.1109/TGRS.2023.3338296⟩
Yamina Benhadda, Hayet Kharbouch, Azzedine Hamid, Pierre Spiteri
Numerical Simulation for Cooling of Integrated Toroidal Octagonal Inductor Using Nanofluid in a Microchannel Heat Sink
Metallurgical and Materials Engineering, 2023, 30 (1), pp.17-44. ⟨10.56801/MME1029⟩
M.A. Rahhali, Thierry Garcia, Pierre Spitéri
Performances analysis of parallel asynchronous and synchronous algorithms on cloud architecture for PDE
Advances in Engineering Software, 2023, 186, pp.103550. ⟨10.1016/j.advengsoft.2023.103550⟩
Philip Knight, Luce Le Gorrec, Sandrine Mouysset, Daniel Ruiz
Introducing the Class of SemiDoubly Stochastic Matrices: A Novel Scaling Approach for Rectangular Matrices
SIAM Journal on Matrix Analysis and Applications, 2023, 44 (4), pp.1731-1748. ⟨10.1137/22M1519791⟩
Serge Gratton, Alena Kopaničáková, Philippe L. Toint
Multilevel Objective-Function-Free Optimization with an Application to Neural Networks Training
SIAM Journal on Optimization, 2023, 33 (4), pp.2772-2800. ⟨10.1137/23M1553455⟩
Alice Danguy Des Déserts, Nicolas Durand, Bertrand Servin, Ellen Goudemand-Dugué, Jean-Marc Alliot, Daniel Ruiz, Gilles Charmet, Jean-Michel Elsen, Sophie Bouchet
Comparison of genomic-enabled cross selection criteria for the improvement of inbred line breeding populations
G3, 2023, ⟨10.1093/g3journal/jkad195⟩
Youssef Diouane, Serge Gratton, Xavier Vasseur
A parallel evolution strategy for an Earth imaging problem in geophysics
In : Optimization and Engineering, Springer, Vol. 17, N. 1, pp. 3-26, 2016.
Quoc Viet Dang, Sandrine Mouysset, Géraldine Morin
Détection de Similarités de Surfaces Paramétriques
In : Revue Electronique Francophone d’Informatique Graphique, AFIG, Vol. 6, N. 2, pp. 50-58, 2012.
Charles Audet, Pierre Hansen, Frédéric Messine
La saga des trois petits octogones
In : Pour la Science, Vol. 380, pp. 62-67, June 2009.
Frédéric Messine, Bertrand Nogarède
Pour une Conception Rationnelle et Optimale des Actionneurs Electromécaniques
In : Revue de l’Electricité et de l’Electronique (REE), Société de l’Electricité, de l’Electronique et des Technologies de l’Information et de la Communication (SEE), Paris, Vol. 5, pp. 131-137, 2008.
Charles Audet, Pierre Hansen, Frédéric Messine
Quatre Petits Octogones
In : MATAPLI, South-East European Research Center (SEERC), Zagreb – Croatie, Vol. 80, pp. 39-59, 2006.
Patrick Amestoy, Iain Duff, Jean-Yves L’Excellent
Parallelisation de la factorisation LU de matrices creuses non-symetriques pour des architectures a memoire distribuee
In : Calculateurs Paralleles, Reseaux et Systemes Repartis, Vol. 10, N. 5, pp. 509-520, 1998.
Philippe Ercolessi, Christine Senac, Hervé Bredin, Sandrine Mouysset
Vers un résumé automatique de séries télévisées basé sur une recherche multimodale d’histoires
Dans : Revue des Sciences et Technologies de l’Information, Hermès Science, Vol. 15 N. 2, pp. 41-66, 2012.
Fabien Meslet-Millet, Sandrine Mouysset, Emmanuel Chaput
DCH: A Deep Learning Approach To Universal Header Compression For The Internet of Things
International ACM Conference on Modeling Analysis and Simulation of Wireless and Mobile Systems (MSWiM 2023), ACM, Oct 2023, Montréal, Québec, Canada. pp.269-276, ⟨10.1145/3616388.3617522⟩
Jean-Baptiste Caillau, Olivier Cots, Joseph Gergaud, Pierre Martinon
Solving optimal control problems with Julia
Julia and Optimization Days 2023, CNAM; CNRS – Groupe CALCUL, Oct 2023, Paris, France
Zakaria Houta, Frédéric Messine, Thomas Huguet
Gradient based Topology Optimization to 3D Magnetic Circuits
13th International Symposium on Electric and Magnetic Fields (EMF 2023), Aug 2023, Marseille, France
Jean-Baptiste Caillau, Olivier Cots, Joseph Gergaud, Pierre Martinon
Solving optimal control problems with Julia (talk)
JuliaCon 2023, MIT: Massachusetts Institute of Technology, Cambridge, MA, USA, Jul 2023, Cambridge, Boston, United States
Thanh Huy Nguyen, Sophie Ricci, Andrea Piacentini, Ehouarn Simon, Raquel Rodriquez Suquet, Santiago Peña Luque
Dealing with Non-Gaussianity of SAR-Derived Wet Surface Ratio for Flood Extent Representation Improvement
IEEE International Geoscience and Remote Sensing Symposium (IGARSS 2023), IEEE, Jul 2023, Pasadena (CA), United States. pp.1595-1598, ⟨10.1109/IGARSS52108.2023.10282744⟩
M A Rahhali, T Garcia, P Spiteri
Behavior of asynchronous subdomain method implemented on cloud computing for the numerical solution of PDE
Numerical Analysis and Scientific Computation with Applications (NASCA23), Athènes juillet 2023, National and Kapodistrian University of Athens (NKUA), National Technical University of Athens (NTUA), Mohammed VI Polytechnic University in Morocco (UM6P) and Littoral Côte d’Opale (ULCO) University in France., Jul 2023, Athènes (Université Panteion), Greece
Sophie Mauran, Sandrine Mouysset, Ehouarn Simon, Laurent Bertino
A Kernel Extension of the Ensemble Transform Kalman Filter
23rd International Conference on Computational Science (ICCS 2023), Jul 2023, Prague, Czech Republic. pp.438-452, ⟨10.1007/978-3-031-36027-5_35⟩
Emmanuel Agullo, Alfredo Buttari, Olivier Coulaud, Lionel Eyraud-Dubois, Mathieu Faverge, Alain Franc, Abdou Guermouche, Antoine Jego, Romain Peressoni, Florent Pruvost
On the Arithmetic Intensity of Distributed-Memory Dense Matrix Multiplication Involving a Symmetric Input Matrix (SYMM)
IPDPS 2023 – 37th International Parallel and Distributed Processing Symposium, IEEE, May 2023, St. Petersburg, FL, United States. pp.357-367
Mohammed Amine Rahhali, Thierry Garcia, Pierre Spitéri
Behavior of asynchronous subdomain method implemented on cloud computing for the numerical solution of PDE
Advances in Asynchronous Domain Decomposition Methods (2023), May 2023, Paris, France
Patrick Amestoy, Olivier Boiteau, Alfredo Buttari, Matthieu Gerest, Fabienne Jézéquel, Jean-Yves L’Excellent, Théo Mary
Reducing communications and memory costs of parallel Block Low-Rank solvers
SIAM Conference on Computational Science and Engineering (CSE 2023), Feb 2023, Amsterdam, Netherlands
Emmanuel Agullo, Alfredo Buttari, Marek Felšöci, Guillaume Sylvand
Vers un solveur direct à base de tâches pour des systèmes linéaires FEM/BEM creux/denses
ComPAS 2023 – Conférence francophone d’informatique en Parallélisme, Architecture et Système, LISTIC : Laboratoire d’Informatique, Systèmes, Traitement de l’Information et de la Connaissance, de l’Université Savoie Mont Blanc., Jul 2023, Annecy, France
Fabien Meslet-Millet, Sandrine Mouysset, Emmanuel Chaput
NeCSTGen : Génération de Trafic Réseau Réaliste par Apprentissage Profond
8èmes Rencontres Francophones sur la Conception de protocoles, l’évaluation de performances et l’expérimentation de Réseaux de communication (CoRes 2023), May 2023, Cargèse, Corse, France. à paraître
Justin Loye, Sandrine Mouysset, Katia Jaffrès-Runser
Emergence de l’imbrication dans l’écosystème du peering public d’Internet
25èmes Rencontres Francophones sur les Aspects Algorithmiques des Télécommunications (AlgoTel 2023), CNRS GdR RSD; INRIA; I3S Sophia Antipolis; Université Côte d’Azur, May 2023, Cargese (Corse), France. à paraître
Alexandre Dupaquis, Ronan Guivarch, Daniel Ruiz, Sandrine Mouysset, Vincent Charvillat, Frédéric Bouilhaguet
Assignation des opérations d’assistance en escale aéroportuaire : une heuristique décisionnelle gloutonne basée sur les données
24ème Congrès annuel de la Société Française de Recherche Opérationnelle et d’Aide à la Décision (ROADEF 2023), Société Française de Recherche Opérationnelle et d’Aide à la Décision; Rennes School of Business; IMT Atlantique; Université Rennes 1, Feb 2023, Rennes, France. pp.1–2
Patrick Amestoy, Olivier Boiteau, Alfredo Buttari, Matthieu Gerest, Fabienne Jézéquel, Jean-Yves L’Excellent, Théo Mary
Solving linear systems efficiently using block low-rank compression in mixed precision
45ème Congrès National d’Analyse Numérique (CANUM 2022), Jun 2022, Évian-les-Bains, France
Justin Loye, Sandrine Mouysset, Katia Jaffrès-Runser
Mesure de l’influence d’une pandémie sur l’écosystème de peering Internet
23èmes Rencontres Francophones sur les Aspects Algorithmiques des Télécommunications (AlgoTel 2021), Université de La Rochelle, May 2021, La Rochelle, France
Luce Le Gorrec, Sandrine Mouysset, Daniel Ruiz, Philip A. Knight, Iain S. Duff
Détection automatique de structures blocs sur des matrices
21ème Conférence sur l’Apprentissage Automatique (CAp 2019), AFIA : Association française pour l’intelligence artificielle, Jul 2019, Toulouse, France. pp.99–108
Mohd Afeef Badri, Yann Favennec, Pierre Jolivet, Steven Le Corre, Arnaud Biallais, Benoit Rousseau
Discrete-scale numerical radiative transfer analysis of porous participating media
14èmes Journées d”Etudes des Milieux Poreux – JEMP 2018, Oct 2018, Nantes, France
Daniel Ruiz, Annick Sartenaer, Charlotte Tannier
Refining the bounds from Rusten-Winther with insights on the interaction between the blocks (Hessian vs Constraints) in KKT systems
In : Int. Conf. on Continuous Optimization of the Mathematical Optimization Society (ICCOPT), Tokyo, Japan, 06/08/16-11/08/16.
Iain Duff, Philip Knight, Sandrine Mouysset, Daniel Ruiz
Identifying blocks in matrices with information from both numerical values and sparsity pattern
In : Seminar on Linear Algebra and Parallel Computing at the Heart of Scientific Computing, Edinburgh, 21/09/16 (invited speaker).
Iain Duff, Philip Knight, Sandrine Mouysset, Daniel Ruiz
Clustering sparse matrices with information from both numerical values and pattern
In : SIAM Parallel Processing, Paris, 12/04/16-15/04/16.
Patrick Amestoy, Julie Anton, Cleve Ashcraft, Alfredo Buttari, Pieter Ghysels, Jean-Yves L’Excellent, Xiaoye Sherry Li, Théo Mary, François-Henry Rouet, Clément Weisbecker
A comparison of parallel rank-structured solvers
In : SIAM Conference on Parallel Processing (SIAM PP’16), Paris, France, 12/04/16-15/04/16.
Patrick Amestoy, Alfredo Buttari, Jean-Yves L’Excellent, Théo Mary
Complexity and performance of Block Low-Rank multifrontal factorization and its variants
In : SIAM Conference on Parallel Processing (SIAM PP’16), Paris, France, 12/04/16-15/04/16.
Patrick Amestoy, Alfredo Buttari, Jean-Yves L’Excellent, Théo Mary
Sparse direct solvers towards seismic imaging of large 3D domains
In : 78th EAGE Conference, workshop methods and challenges of seismic wave modelling for seismic imaging, Vienna, Austria, 30/05/16-02/06/16.
Patrick Amestoy, Alfredo Buttari, Jean-Yves L’Excellent, Théo Mary
Performance and scalability of the Block Low-Rank multifrontal factorization
In : Parallel Matrix Algorithms and Applications (PMAA’16), Bordeaux, France, 06/07/16-08/07/16.
Olivier Cots, Joseph Gergaud, Damien Goubinat
Problème de contrôle optimal en temps minimal pour un avion contraint en phase de montée
In : Journées SMAI-MODE, Toulouse, 23/03/16.
Historique et Infrastructure de E-Biothon : une plateforme expérimentale pour la bioinformatique
In : Journées Succes 2016, Institut de Physique du Globe de Paris., 23/11/16-24/11/16 (invited speaker).
La mission Calcul Données (MICADO) et quelques éléments de la vision du CNRS
In : 38e Forum ORAP, CNRS Michel-Ange, Paris, 18/10/16 (invited speaker).
Térence Bayen, Anas Bouali, Loïc Bourdin, Olivier Cots
On the reduction of a spatially hybrid optimal control problem into a temporally hybrid optimal control problem
AIMS on Applied Mathematics. IVAN KUPKA LEGACY: A Tour Through Controlled Dynamics, 12, 2024, ISBN-10: 1-60133-026-X
Bernard Bonnard, Olivier Cots, Yannick Privat, Emmanuel Trélat
Zermelo navigation on the sphere with revolution metrics
IVAN KUPKA LEGACY: A Tour Through Controlled Dynamics, 12, pp.35–66, 2024, AIMS Applied Math Books – Special issue in honor of I. Kupka, ISBN-10: 1-60133-026-X ISBN-13: 978-1-60133-026-0
Numerical Tools for Geometric Optimal Control and the Julia control-toolbox package
Bernard Bonnard; Monique Chyba; David Holcman; Emmanuel Trélat. Ivan KUPKA LEGACY: A Tour Through Controlled Dynamics, 58 (chapter 10), AIMS Sciences, pp.209–243, 2024, AIMS on Applied Mathematics, 978-1-60133-026-0
Carlos Balsa, Michel Daydé, José Palma, Daniel Ruiz
Inexact Subspace Iteration for the Consecutive Solution of Linear Systems with Changing Right-Hand Sides
Alberto A. Pinto; David Zilberman. Modeling, Dynamics, Optimization and Bioeconomics III. DGS IV, Madrid, Spain, June 2016, and Bioeconomy VIII, Berkeley, USA, April 2015 – Selected Contributions, 224, Springer International Publishing, pp.49-78, 2018, Springer Proceedings in Mathematics & Statistics, 978-3-319-74085-0. ⟨10.1007/978-3-319-74086-7_3⟩
Carlos Balsa, Michel Daydé, José Palma, Daniel Ruiz
Inexact Subspace Iteration for the Consecutive Solution of Linear Systems with Changing Right-Hand Sides
Springer International Publishing, 224, pp.49-78, 2018, Springer Proceedings in Mathematics & Statistics, ⟨10.1007/978-3-319-74086-7_3⟩
Les Big Data à découvert
Mokrane Bouzeghoub; Rémy Mosseri. CNRS, 121, pp.80-81, 2017, ⟨10.4000/terminal.1692⟩
Serge Gratton, Selime Gurol, Ehouarn Simon, Philippe Toint
Issues in making the weakly-constrained 4DVar formulation computationally efficient
Griewank, Andreas; Reich, Sebastian; Roulstone, Ian; Stuart, Andrew. Mathematical and Algorithmic Aspects of Data Assimilation in the Geosciences, 13 (4), Mathematisches Forschungsinstitut Oberwolfach, pp.2705-2748, 2017, Oberwolfach Reports, ISSN: 1660-8933. ⟨10.4171/OWR/2016/47⟩
Les grands sites de calcul et de stockage
Bouzeghoub, Mokrane; Mosseri, Rémy. Les Big Data à découvert, 2, CNRS, pp.80–81, 2017, 978-2271114648
Derivative-Free Optimization Methods based on Probabilistic and Deterministic Properties: Complexity Analysis and Numerical Relevance,, November 2016 (to appear).
Nicolas Durand, David Gianazza, Jean-Baptiste Gotteland, Jean-Marc Alliot
Metaheuristics for Air Traffic Management., ISTE – WILEY, December 2015.
URL : http://onlinelibrary.wiley.com/doi/10.1002/9781119261513.ch1/summary;jsessionid=B93E87A2DFCAADE72B4939B755B75999.f02t03?
BibTeX
Serge Gratton, Selime Gurol, Ehouarn Simon, Philippe Toint
Issues in making the weakly-constrained 4DVar formulation computationally efficient
In : Mathematical and Algorithmic Aspects of Data Assimilation in the Geosciences. Andreas Griewank, Sebastian Reich, Ian Roulstone, Andrew Stuart (Eds.) , Mathematisches Forschungsinstitut Oberwolfach, (on line), Vol. 13, Oberwolfach Reports, 2016.
Nicolas Durand, David Gianazza, Jean-Baptiste Gotteland, Charlie Vanaret, Jean-Marc Alliot
Metaheuristics: Applications to Air Traffic Management
In : Metaheuristics. Patrick Siarry (Eds.) , Springer, pp. 439-484, ISBN 978-3-319-45401-6, December 2016.
Infrastructures pour le HPC et le Cloud
In : Infrastructures matérielles et logicielles. Nazim Algoumine, Fatiha Boujdaine (Eds.) , Agence Nationale de la Recherche, pp. 37-42, Cahier de l’ANR, 9, November 2016.
Laurent Debreu, Emilie Neveu, Ehouarn Simon, François-Xavier Le Dimet
Multigrid algorithms and local mesh refinement methods in the context of variational data assimilation
In : Advanced Data Assimilation for Geosciences. Lecture Notes of Les Houches Summer School 2012. Eric Blayo, Marc Bocquet, Emmanuel Cosme, Leticia Cugliandolo (Eds.) , Oxford University Press, pp. 395-412, October 2014.
Jean-Marc Alliot, Nicolas Durand, David Gianazza, Jean-Baptiste Gotteland, Charlie Vanaret
Application en gestion du trafic aérien
In : Métaheuristiques. Patrick Siarry (Eds.) , Eyrolles, 15, pp. 413-459, 2014.
Patrick Amestoy, Alfredo Buttari, Iain Duff, Abdou Guermouche, Jean-Yves L’Excellent, Bora Uçar
MUMPS (MUltifrontal Massively Parallel Solver)
In : Encyclopedia of Parallel Computing. David Padua (Eds.) , Springer, pp. 0-0, August 2011.
URL : http://www.springer.com/computer/swe/book/978-0-387-09765-7
BibTeXPatrick Amestoy, Alfredo Buttari, Iain Duff, Abdou Guermouche, Jean-Yves L’Excellent, Bora Uçar
The multifrontal method
In : Encyclopedia of Parallel Computing. David Padua (Eds.) , Springer, pp. 0-0, August 2011.
URL : http://www.springer.com/computer/swe/book/978-0-387-09765-7
BibTeXCharles-Edmond Bichot, Nicolas Durand
chapitre 10: Application du partitionnement au découpage de l’espace aérien
In : Partitionnement de graphe. Patrick Siarry (Eds.) , Lavoisier, 10, pp. 1-1, July 2010.
Michel Daydé, Osni Marques, Kengo Nakajima
High Performance Computing for Computational SCience – VECPAR 2014, Eugene, Oregon, USA, 30/06/14 – 03/07/14, Springer, LNCS 8969, June 2015.
Michel Daydé, Osni Marques, Kengo Nakajima
High Performance Computing for Computational Science – VECPAR 2012, Kobe, Japan, 17/07/12 – 20/07/12, Springer-Verlag, LNCS 7851, January 2013.
José Palma, Michel Daydé, Osni Marques, Joao Correia Lopez
High Performance Computing for Computational Science- VECPAR 2010, Berkeley- USA, 22/06/10 – 25/06/10, Springer-Verlag, LNCS 6449, January 2011.
Ehouarn Simon, Laurent Bertino
Joint state-parameter estimation in a 3D coupled physical-ecosystem model of the North Atlantic: assimilation of SeaWiFS data with a non-Gaussian extension of an ESRF, ESA Living Planet Symposium 2010, Bergen, Norway, European Space Agency (ESA Publications), 2010.
José Palma, Patrick Amestoy, Michel Daydé, Marta Mattoso, Joao Correia Lopez
High Performance Computing for Computational Science (Revised selected papers of VECPAR 2008), Toulouse- France, 24/06/08 – 27/06/08, Springer-Verlag, LNCS 5336, December 2008.
Michel Daydé, José Palma, Alvaro Coutinho, Esther Pacitti, Joao Correia Lopez
Selected Papers and Invited Talks from the 7th International Conference on High Performance Computing for Computational Science (VECPAR’2006), Rio de Janeiro, Brésil, 10/07/06 – 13/07/06, Springer-Verlag, LNCS 4395, 2007.
Patrick Amestoy, Philippe Berger, Michel Daydé, Iain Duff, Valérie Frayssé, Luc Giraud, Daniel Ruiz
Euro-Par’99 Parallel Processing, Proceedings of the 5th International Euro-Par Conference, Toulouse, 31/08/99 – 03/09/99, Lecture Notes in Computer Science, 1685, Springer, Berlin, August 1999.
Second Order and High Order Approaches for Nonconvex Optimization with Objective Function-Free Algorithms
General Mathematics [math.GM]. Université de Toulouse, 2024. English. ⟨NNT : 2024TLSEP024⟩
Advanced task-based programming models for scalable linear algebra operations
Other [cs.OH]. Institut National Polytechnique de Toulouse – INPT, 2023. English. ⟨NNT : 2023INPT0107⟩
Quelques contributions à l’assimilation de données : des moindres carrés non-linéaires pondérés en grande dimension, applications en océanographie
Optimisation et contrôle [math.OC]. Toulouse INP, 2023
Introduction de la norme Lp pour la prise en compte de propriétés de parcimonie en assimilation de données.
Autre [cs.OH]. Institut National Polytechnique de Toulouse – INPT, 2022. Français. ⟨NNT : 2022INPT0086⟩
Mixed precision iterative refinement for the solution of large sparse linear systems
Mathematical Software [cs.MS]. INP Toulouse, 2022. English. ⟨NNT : ⟩
Méthodes géométriques et numériques en contrôle optimal et problèmes de Zermelo sur les surfaces et révolution : applications
Variables complexes [math.CV]. Université Paul Sabatier – Toulouse III, 2021. Français. ⟨NNT : 2021TOU30126⟩
Fast solvers for robust discretizations in computational fluid dynamics
Fluid mechanics [physics.class-ph]. Université Montpellier; Friedrich-Alexander-Universität Erlangen-Nürnberg, 2021. English. ⟨NNT : 2021MONTS051⟩
Raffinement adaptatif du processus d’assimilation de données par méthodes de Kalman d’ensemble pour des problèmes non linéaires.
Mathématiques générales [math.GM]. Institut National Polytechnique de Toulouse – INPT, 2021. Français. ⟨NNT : 2021INPT0003⟩
Équilibrage bi-stochastique des matrices pour la détection de structures par blocs et applications
Réseaux et télécommunications [cs.NI]. Université Paul Sabatier – Toulouse III, 2019. Français. ⟨NNT : 2019TOU30136⟩
ASGART-fast & efficient de novo mapping of segmental duplications at the genome scale
Quantitative Methods [q-bio.QM]. INSA de Toulouse, 2019. English. ⟨NNT : 2019ISAT0020⟩
Emmanuel Agullo, Alfredo Buttari, Abdou Guermouche, Julien Herrmann, Antoine Jego
Task-Based Parallel Programming for Scalable Algorithms: application to Matrix Multiplication
[Research Report] RR-9461, Inria Bordeaux – Sud-Ouest. 2022, pp.29
Luce Le Gorrec, Sandrine Mouysset, Stergos Afantenos
Identification des actes de dialogue d’un réseau BiLSTM à l’aide de méthodes de clustering
[Rapport de recherche] IRIT : Institut en Recherche Informatique de Toulouse, France. 2019
Patrick Amestoy, Sebastien de La Kethulle de Ryhove, Jean-Yves L’Excellent, Gilles Moreau, Daniil V. Shantsev
Efficient use of sparsity by direct solvers applied to 3D controlled-source EM problems
[Research Report] RR-9220, Inria Grenoble Rhône-Alpes; LIP – ENS Lyon. 2018, pp.26
Sandrine Mouysset, Ronan Guivarch
ParKerC: Toolbox for Parallel Kernel Clustering Methods
[Rapport de recherche] IRIT : Institut en Recherche Informatique de Toulouse, France. 2018
Luce Le Gorrec, Sandrine Mouysset, Iain Duff, Philip Knight, Daniel Ruiz
Uncovering hidden block structure for clustering
[Research Report] IRIT/RR–2018, IRIT : Institut de Recherche Informatique de Toulouse. 2018
Luce Le Gorrec, Sandrine Mouysset, Daniel Ruiz
Evaluation de la qualité des découpages en communautés dans le cas de graphes non orientés pondérés
[Rapport de recherche] IRIT. 2018
Patrick Amestoy, Jean-Yves L’Excellent, Gilles Moreau
On Exploiting Sparsity of Multiple Right-Hand Sides in Sparse Direct Solvers
[Research Report] RR-9122, ENS de Lyon; INRIA Grenoble – Rhone-Alpes. 2017, pp.1-28
Emmanuel Agullo, Alfredo Buttari, Mikko Byckling, Abdou Guermouche, Ian Masliah
Achieving high-performance with a sparse direct solver on Intel KNL
[Research Report] RR-9035, Inria Bordeaux Sud-Ouest; CNRS-IRIT; Intel corporation; Université Bordeaux. 2017, pp.15
Patrick Amestoy, Alfredo Buttari, Jean-Yves L’Excellent, Théo Mary
On the Complexity of the Block Low-Rank Multifrontal Factorization
Research report, IRIT/RT–2016–03–FR, IRIT, 2016.
Preconditioning linear least-squares problems by identifying a basis matrix
Research report, IRIT: RT-APO-15-2, IRIT, June 2015.
Abstract URL : https://www.researchgate.net/publication/278707265_Preconditioning_linear_least-squares_problems_by_identifying_a_basis_matrix
BibTeXThe anisotropic Steklov-Poincare matrix
Research report, IRIT: RT-APO-15-1, IRIT, June 2015.
Abstract URL : https://www.researchgate.net/publication/278685207_The_anisotropic_Steklov-Poincare_matrix
BibTeXEmmanuel Agullo, Alfredo Buttari, Abdou Guermouche, Florent Lopez
Task-based multifrontal QR solver for GPU-accelerated multicore architectures
Research report, IRI/RT–2015–02–FR, IRIT, June 2015.
Emmanuel Agullo, Alfredo Buttari, Abdou Guermouche, Florent Lopez
Implementing multifrontal sparse solvers for multicore architectures with Sequential Task Flow runtime systems
Research report, IRI/RT–2014-03–FR, IRIT, November 2014.
URL : http://buttari.perso.enseeiht.fr/stuff/IRI-RT–2014-03–FR.pdf
BibTeXAnalyse de données issues d’ARNm, de lipides et de cytokines
Contract report, RT-APO-14-1, IRIT, June 2014.
Alfredo Buttari, Serge Gratton, Xiaoye Sherry Li, Marieme Ngom, François-Henry Rouet, David Titley-Peloquin, Clément Weisbecker
Error Analysis of the Block Low-Rank LU factorization of dense matrices.
Research report, RT-APO-13-7, IRIT-CERFACS, in collaboration with LBNL, August 2013.
Patrick Amestoy, Cleve Ashcraft, Olivier Boiteau, Alfredo Buttari, Jean-Yves L’Excellent, Clément Weisbecker
Version V1 de MUMPS finalisée, version V2 préliminaire de MUMPS, nouveaux résultats, première version incomplète du manuscript de thèse, manuel dutilisation du prototype
Contract report, EDF-INPT No 2010-0070 RT7, IRIT, June 2013.
Patrick Amestoy, Cleve Ashcraft, Olivier Boiteau, Alfredo Buttari, Jean-Yves L’Excellent, Clément Weisbecker
Version V1 de MUMPS, nouveaux résultats, plan de thèse
Contract report, EDF-INPT No 2010-0070 RT6, IRIT, April 2013.
Emmanuel Agullo, Alfredo Buttari, Abdou Guermouche, Florent Lopez
Multifrontal QR factorization for multicore architectures over runtime systems
Research report, RT-APO-13-3, IRIT, February 2013.
URL : http://buttari.perso.enseeiht.fr/stuff/RT-APO-13-3.pdf
BibTeX
team Contracts
| Acronym | Title | Resp. sc | Start-End year | |
|---|---|---|---|---|
| Labex CIMI | Centre International de Mathématiques et d’Informatique (de Toulouse) | Joseph GERGAUD Christine ROCHANGE Franck MORVAN Denis KOUAMÉ Lotfi CHAARI Urtzi AYESTA Boris TEABE Thomas CARLE Emmanuel SOUBIES José Henrique DE MORAIS GOULART | 2012 – 2024 | |
| MEDIATION |  | Développements méthodologiques pour un jumeau numérique robuste et efficace de locéan | Serge GRATTON | 2022 – 2027 |
| Cancéropôle Grand Sud-Ouest : LOPM | Utilisation de techniques de deep learning pour l’aide au diagnostic de lésions orales à potentiel malin LOPM | Sandrine MOUYSSET | 2023 – 2024 | |
| PEPR NUMPEX : Exasoft | | Bibliothèques et outils pour le calcul à hautes performances | Alfredo BUTTARI | 2023 – 2029 |
| SOLHARIS [Contract completed] | | Solveurs pour architectures hétérogènes utilisant des supports d’exécution, objectif scalabilité | Alfredo BUTTARI | 2019 – 2023 |
| FSAT 4 HHO [Contract completed] | | Solveurs rapides pour des discrétisations robustes en mécanique des fluides | Daniel RUIZ | 2017 – 2021 |
| AVENUE [Contract completed] | Assimilation Variationnelle-ENsemble UnifiéE | Ehouarn SIMON | 2014 – 2015 | |
| SOLHAR [Contract completed] |  | Solveurs pour architectures hétérogènes utilisant des supports d’exécution | Alfredo BUTTARI | 2013 – 2017 |
| Acronym | Title | Resp. sc | Start-End year | |
|---|---|---|---|---|
| EoCoE-III |  | Fostering the European Energy Transition With Exascale | Alfredo BUTTARI | 2024 – 2026 |
| Financement UCAR [Contract completed] | Generic and efficient Background Error covariance operator for Next-generation Dat Assimilation – année 2 | Serge GRATTON | 2021 – 2022 | |
| EoCoE-II [Contract completed] | Energy Oriented Center of Excellence : toward exascale for energy | Alfredo BUTTARI | 2019 – 2021 | |
| Financement UCAR [Contract completed] | Generic and Efficient Background Error covariance operator for Next-generation Data Assimilation – année 1 | Serge GRATTON | 2019 – 2019 |
| Acronym | Title | Resp. sc | Start-End year | |
|---|---|---|---|---|
| HERMES | Allocation doctorale : Earth system models and machine learning to better represent climatE change and its impact on the ecosystem | Sixin ZHANG | 2023 – 2027 | |
| INTRACI – partie région [Contract completed] | Evaluation des biomarqueurs de la résolution de l’inflammation chez les patients dans des contextes inflammatoires à éthiologie variée et analyse par approche non supervisée des systèmes dynamiques | Sandrine MOUYSSET | 2017 – 2020 |