Alfredo Buttari

Publication Activity (10 Years)

Years Active: 2004-2024
Publications (10 Years): 16

Top Topics

Iterative Refinement

Low Rank Matrices

Parallel Programming

Top Venues

SIAM J. Sci. Comput.

ACM Trans. Math. Softw.

SIAM J. Matrix Anal. Appl.

Publications

Patrick Amestoy, Alfredo Buttari, Nicholas J. Higham, Jean-Yves L'Excellent, Théo Mary, Bastien Vieuble
Five-Precision GMRES-Based Iterative Refinement. SIAM J. Matrix Anal. Appl. 45 (1) (2024)
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 J. Matrix Anal. Appl. 45 (1) (2024)
Patrick Amestoy, Alfredo Buttari, Nicholas J. Higham, Jean-Yves L'Excellent, Théo Mary, Bastien Vieuble
Combining Sparse Approximate Factorizations with Mixed-precision Iterative Refinement. ACM Trans. Math. Softw. 49 (1) (2023)
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)
Emmanuel Agullo, Alfredo Buttari, Abdou Guermouche, Julien Herrmann, Antoine Jego
Task-based Parallel Programming for Scalable Matrix Product Algorithms. ACM Trans. Math. Softw. 49 (2) (2023)
Alfredo Buttari, Markus Huber, Philippe Leleux, Théo Mary, Ulrich Rüde, Barbara I. Wohlmuth
Block low-rank single precision coarse grid solvers for extreme scale multigrid methods. Numer. Linear Algebra Appl. 29 (1) (2022)
Cleve Ashcraft, Alfredo Buttari, Théo Mary
Format. SIAM J. Matrix Anal. Appl. 42 (2) (2021)
Alfredo Buttari, Søren Hauberg, Costy Kodsi
Factorization of Block-Tridiagonal Matrices. SIAM J. Sci. Comput. 42 (6) (2020)
Patrick R. Amestoy, Alfredo Buttari, Jean-Yves L'Excellent, Théo Mary
Performance and Scalability of the Block Low-Rank Multifrontal Factorization on Multicore Architectures. ACM Trans. Math. Softw. 45 (1) (2019)
Patrick R. Amestoy, Alfredo Buttari, Jean-Yves L'Excellent, Théo Mary
Bridging the Gap Between Flat and Hierarchical Low-Rank Matrix Formats: The Multilevel Block Low-Rank Format. SIAM J. Sci. Comput. 41 (3) (2019)
Alfredo Buttari, Dominique Orban, Daniel Ruiz, David Titley-Péloquin
A Tridiagonalization Method for Symmetric Saddle-Point Systems. SIAM J. Sci. Comput. 41 (5) (2019)
Patrick Amestoy, Alfredo Buttari, Jean-Yves L'Excellent, Théo Mary
On the Complexity of the Block Low-Rank Multifrontal Factorization. SIAM J. Sci. Comput. 39 (4) (2017)
Gabriel Hautreux, Alfredo Buttari, Arnaud Beck, Victor Cameo, Dimitri Lecas, Dominique Aubert, Emeric Brun, Eric Boyer, Fausto Malvagi, Gabriel Staffelbach, Isabelle d'Ast, Joeffrey Legaux, Ghislain Lartigue, Gilles Grasseau, Guillaume Latu, Juan Escobar, Julien Bigot, Julien Derouillat, Matthieu Haefele, Nicolas Renon, Philippe Parnaudeau, Philippe Wautelet, Pierre-Francois Lavallee, Pierre Kestener, Rémi Lacroix, Stéphane Requena, Anthony Scemama, Vincent Moureau, Jean-Matthieu Etancelin, Yann Meurdesoif
Pre-exascale Architectures: OpenPOWER Performance and Usability Assessment for French Scientific Community. ISC Workshops (2017)
Emmanuel Agullo, Alfredo Buttari, Abdou Guermouche, Florent Lopez
Implementing Multifrontal Sparse Solvers for Multicore Architectures with Sequential Task Flow Runtime Systems. ACM Trans. Math. Softw. 43 (2) (2016)
Emmanuel Agullo, Patrick R. Amestoy, Alfredo Buttari, Abdou Guermouche, Jean-Yves L'Excellent, François-Henry Rouet
Robust Memory-Aware Mappings for Parallel Multifrontal Factorizations. SIAM J. Sci. Comput. 38 (3) (2016)
Emmanuel Agullo, George Bosilca, Alfredo Buttari, Abdou Guermouche, Florent Lopez
Exploiting a Parametrized Task Graph Model for the Parallelization of a Sparse Direct Multifrontal Solver. Euro-Par Workshops (2016)
Patrick Amestoy, Cleve Ashcraft, Olivier Boiteau, Alfredo Buttari, Jean-Yves L'Excellent, Clément Weisbecker
Improving Multifrontal Methods by Means of Block Low-Rank Representations. SIAM J. Sci. Comput. 37 (3) (2015)
Luka Stanisic, Emmanuel Agullo, Alfredo Buttari, Abdou Guermouche, Arnaud Legrand, Florent Lopez, Brice Videau
Fast and Accurate Simulation of Multithreaded Sparse Linear Algebra Solvers. ICPADS (2015)
Emmanuel Agullo, Alfredo Buttari, Abdou Guermouche, Florent Lopez
Task-Based Multifrontal QR Solver for GPU-Accelerated Multicore Architectures. HiPC (2015)
Laurent Bouchet, Patrick Amestoy, Alfredo Buttari, François-Henry Rouet, Maxime Chauvin
datasets: Optimizing the computation of the solution and its variance using sparse matrix algorithms. Astron. Comput. 1 (2013)
Alfredo Buttari
Fine-Grained Multithreading for the Multifrontal QR Factorization of Sparse Matrices. SIAM J. Sci. Comput. 35 (4) (2013)
Emmanuel Agullo, Alfredo Buttari, Abdou Guermouche, Florent Lopez
Multifrontal QR Factorization for Multicore Architectures over Runtime Systems. Euro-Par (2013)
Salvatore Filippone, Alfredo Buttari
Object-Oriented Techniques for Sparse Matrix Computations in Fortran 2003. ACM Trans. Math. Softw. 38 (4) (2012)
Alfredo Buttari
Fine Granularity Sparse QR Factorization for Multicore Based Systems. PARA (2) (2010)
Marc Baboulin, Alfredo Buttari, Jack J. Dongarra, Jakub Kurzak, Julie Langou, Julien Langou, Piotr Luszczek, Stanimire Tomov
Accelerating scientific computations with mixed precision algorithms. Comput. Phys. Commun. 180 (12) (2009)
Alfredo Buttari, Julien Langou, Jakub Kurzak, Jack J. Dongarra
A class of parallel tiled linear algebra algorithms for multicore architectures. Parallel Comput. 35 (1) (2009)
Marc Baboulin, Alfredo Buttari, Jack J. Dongarra, Jakub Kurzak, Julie Langou, Julien Langou, Piotr Luszczek, Stanimire Tomov
Accelerating Scientific Computations with Mixed Precision Algorithms CoRR (2008)
Alfredo Buttari, Julien Langou, Jakub Kurzak, Jack J. Dongarra
Parallel tiled QR factorization for multicore architectures. Concurr. Comput. Pract. Exp. 20 (13) (2008)
Alfredo Buttari, Jack J. Dongarra, Jakub Kurzak, Piotr Luszczek, Stanimire Tomov
Using Mixed Precision for Sparse Matrix Computations to Enhance the Performance while Achieving 64-bit Accuracy. ACM Trans. Math. Softw. 34 (4) (2008)
Jakub Kurzak, Alfredo Buttari, Jack J. Dongarra
Solving Systems of Linear Equations on the CELL Processor Using Cholesky Factorization. IEEE Trans. Parallel Distributed Syst. 19 (9) (2008)
Jakub Kurzak, Alfredo Buttari, Piotr Luszczek, Jack J. Dongarra
The PlayStation 3 for High-Performance Scientific Computing. Comput. Sci. Eng. 10 (3) (2008)
Alfredo Buttari, Julien Langou, Jakub Kurzak, Jack J. Dongarra
Parallel Tiled QR Factorization for Multicore Architectures. PPAM (2007)
Alfredo Buttari, Jack J. Dongarra, Julie Langou, Julien Langou, Piotr Luszczek, Jakub Kurzak
Mixed Precision Iterative Refinement Techniques for the Solution of Dense Linear Systems. Int. J. High Perform. Comput. Appl. 21 (4) (2007)
Alfredo Buttari, Julien Langou, Jakub Kurzak, Jack J. Dongarra
A Class of Parallel Tiled Linear Algebra Algorithms for Multicore Architectures CoRR (2007)
Alfredo Buttari, Victor Eijkhout, Julien Langou, Salvatore Filippone
Performance Optimization and Modeling of Blocked Sparse Kernels. Int. J. High Perform. Comput. Appl. 21 (4) (2007)
Jakub Kurzak, Alfredo Buttari
Introduction to Programming High Performance Applications on the CELL Broadband Engine. Hot Interconnects (2007)
Alfredo Buttari, Pasqua D'Ambra, Daniela di Serafino, Salvatore Filippone
2LEV-D2P4: a package of high-performance preconditioners for scientific and engineering applications. Appl. Algebra Eng. Commun. Comput. 18 (3) (2007)
Julie Langou, Julien Langou, Piotr Luszczek, Jakub Kurzak, Alfredo Buttari, Jack J. Dongarra
Tools and techniques for performance - Exploiting the performance of 32 bit floating point arithmetic in obtaining 64 bit accuracy (revisiting iterative refinement for linear systems). SC (2006)
Alfredo Buttari, Jack J. Dongarra, Jakub Kurzak, Julie Langou, Julien Langou, Piotr Luszczek, Stanimire Tomov
Exploiting Mixed Precision Floating Point Hardware in Scientific Computations. High Performance Computing Workshop (2006)
Alfredo Buttari, Jakub Kurzak, Jack J. Dongarra
Poster reception - Targeting multi-core architectures for linear algebra applications. SC (2006)
James Demmel, Jack J. Dongarra, Beresford N. Parlett, William Kahan, Ming Gu, David Bindel, Yozo Hida, Xiaoye S. Li, Osni Marques, E. Jason Riedy, Christof Vömel, Julien Langou, Piotr Luszczek, Jakub Kurzak, Alfredo Buttari, Julie Langou, Stanimire Tomov
Prospectus for the Next LAPACK and ScaLAPACK Libraries. PARA (2006)
Alfredo Buttari, Jack J. Dongarra, Jakub Kurzak, Julien Langou, Piotr Luszczek, Stanimire Tomov
The Impact of Multicore on Math Software. PARA (2006)
Gino Bella, Alfredo Buttari, Alessandro De Maio, Francesco Del Citto, Salvatore Filippone, Fabiano Gasperini
FAST-EVP: An Engine Simulation Tool. HPCC (2005)
Alfredo Buttari, Pasqua D'Ambra, Daniela di Serafino, Salvatore Filippone
Extending PSBLAS to Build Parallel Schwarz Preconditioners. PARA (2004)