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Alfredo Buttari

CNRS Research Director at IRIT
6
Documents

Présentation

I am currently a CNRS (Centre National de la Recherche Scientifique) research director at the IRIT (Institut de Recherche en Informatique de Toulouse) laboratory in Toulouse (France) where I am a member of the APO (Algorithmes Parallèles et Optimisation). My interest are in High Performance Computing, parallel computing, computational linear algebra (numerical software in general). Here is my CV and a short bio: - 2021-present: CNRS research director @ IRIT - 2008-2021: CNRS researcher @ IRIT - 2018: Habilitation à Diriger des Recherches (manuscript, presentation). - 2008: post-doc at INRIA Rhone-Alpes in Lyon (France) where I was a member of the Laboratoire de l'Informatique du Parallelisme (LIP). - 2006-2007: post-doc in the Innovative Computing Laboratory (ICL) lead by Prof. Jack Dongarra at the University of Tennessee Knoxville. - 2003-2006 Ph.D. at Dipartimento Informatica Sistemi e Produzione of University of Rome "Tor Vergata". More info on my web page: https://abuttari.gitlab.io

Publications

fabienne-jezequel
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Communication Avoiding Block Low-Rank Parallel Multifrontal Triangular Solve with Many Right-Hand Sides

 Patrick Amestoy , Olivier Boiteau , Alfredo Buttari , Matthieu Gerest , Fabienne Jézéquel
SIAM Journal on Matrix Analysis and Applications, 2024, 45 (1), pp.148-166. ⟨10.1137/23M1568600⟩
Article dans une revue hal-04082415v1
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Mixed Precision Low Rank Approximations and their Application to Block Low Rank LU Factorization

 Patrick Amestoy , Olivier Boiteau , Alfredo Buttari , Matthieu Gerest , Fabienne Jézéquel
IMA Journal of Numerical Analysis, 2022, ⟨10.1093/imanum/drac037⟩
Article dans une revue hal-03251738v3

Reducing communications and memory costs of parallel Block Low-Rank solvers

 Patrick Amestoy , Olivier Boiteau , Alfredo Buttari , Matthieu Gerest , Fabienne Jézéquel
SIAM Conference on Computational Science and Engineering (CSE 2023), Feb 2023, Amsterdam, Netherlands
Communication dans un congrès hal-03922334v1

Solving linear systems efficiently using block low-rank compression in mixed precision

 Patrick Amestoy , Olivier Boiteau , Alfredo Buttari , Matthieu Gerest , Fabienne Jézéquel
45ème Congrès National d'Analyse Numérique (CANUM 2022), Jun 2022, Évian-les-Bains, France
Communication dans un congrès hal-03922287v1

Solving linear systems efficiently using mixed-precision Block Low-Rank compression

 Patrick Amestoy , Olivier Boiteau , Alfredo Buttari , Matthieu Gerest , Fabienne Jézéquel
Rencontres Arithmétique de l'informatique Mathématique (RAIM 2021), GdR GdR IM : Informatique Mathématique, May 2021, Paris, France
Communication dans un congrès hal-03783037v1
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Block low-rank compression in mixed precision for the solution of sparse linear systems

 Matthieu Gerest , Patrick Amestoy , Olivier Boiteau , Alfredo Buttari , Fabienne Jézéquel
Sparse Days conference 2022, Jun 2022, Saint-Girons, France.
Poster de conférence hal-03780548v1