Gregorio Quintana-Ortí

83 papers A 3B 3C 5Misc 2Journal 48Unranked 22
YearRankTypeTitle / Venue / Authors
2026 J jnl
Implementing Basic Arithmetic in 𝔽
CoRR
Fernando Hernando, Gregorio Quintana-Ortí
2024 J jnl
Direct Low-Dose CT Image Reconstruction on GPU using Out-Of-Core: Precision and Quality Study.
CoRR
Mónica Chillarón, Gregorio Quintana-Ortí, Vicente Vidal, Gumersindo Verdú Martín
2024 J jnl
Fast Algorithms and Implementations for Computing the Minimum Distance of Quantum Codes.
CoRR
Fernando Hernando, Gregorio Quintana-Ortí, Markus Grassl
2024 J jnl
Solving Large Rank-Deficient Linear Least-Squares Problems on Shared-Memory CPU Architectures and GPU Architectures.
CoRR
Mónica Chillarón, Gregorio Quintana-Ortí, Vicente Vidal, Per-Gunnar Martinsson
2023 J jnl
Algorithm 1033: Parallel Implementations for Computing the Minimum Distance of a Random Linear Code on Distributed-memory Architectures.
ACM Trans. Math. Softw.
Gregorio Quintana-Ortí, Fernando Hernando, Francisco D. Igual
2023 J jnl
Computing rank-revealing factorizations of matrices stored out-of-core.
Concurr. Comput. Pract. Exp.
Nathan Heavner, Per-Gunnar Martinsson, Gregorio Quintana-Ortí
2022 J jnl
Algorithm 1022: Efficient Algorithms for Computing a Rank-Revealing UTV Factorization on Parallel Computing Architectures.
ACM Trans. Math. Softw.
Nathan Heavner, Francisco D. Igual, Gregorio Quintana-Ortí, Per-Gunnar Martinsson
2022 J jnl
High-performance reconstruction of CT medical images by using out-of-core methods in GPU.
Comput. Methods Programs Biomed.
Gregorio Quintana-Ortí, Mónica Chillarón, Vicente Vidal, Gumersindo Verdú
2021 J jnl
Efficient algorithms for computing a rank-revealing UTV factorization on parallel computing architectures.
CoRR
Nathan Heavner, Francisco D. Igual, Gregorio Quintana-Ortí, Per-Gunnar Martinsson
2021 J jnl
Students' Perception of the Effect of Formative Assessment on Their Learning.
Rev. Iberoam. de Tecnol. del Aprendiz.
Mercedes Marqués Andrés, José Manuel Badía-Contelles, Gregorio Quintana-Ortí
2020 J jnl
Computed tomography medical image reconstruction on affordable equipment by using Out-Of-Core techniques.
Comput. Methods Programs Biomed.
Mónica Chillarón, Gregorio Quintana-Ortí, Vicente Vidal, Gumersindo Verdú
2020 J jnl
Computing rank-revealing factorizations of matrices stored out-of-core.
CoRR
Nathan Heavner, Per-Gunnar Martinsson, Gregorio Quintana-Ortí
2019 J jnl
Algorithm 994: Fast Implementations of the Brouwer-Zimmermann Algorithm for the Computation of the Minimum Distance of a Random Linear Code.
ACM Trans. Math. Softw.
Fernando Hernando, Francisco D. Igual, Gregorio Quintana-Ortí
2019 J jnl
Computed tomography medical image reconstruction on affordable equipment by using out-of-core techniques.
CoRR
Mónica Chillarón, Gregorio Quintana-Ortí, Vicente Vidal, Gumersindo Verdú
2019 J jnl
Parallel Implementations for Computing the Minimum Distance of a Random Linear Code on Multicomputers.
CoRR
Gregorio Quintana-Ortí, Fernando Hernando, Francisco D. Igual
2019 J jnl
randUTV: A Blocked Randomized Algorithm for Computing a Rank-Revealing UTV Factorization.
ACM Trans. Math. Softw.
Per-Gunnar Martinsson, Gregorio Quintana-Ortí, Nathan Heavner
2017 J jnl
Householder QR Factorization With Randomization for Column Pivoting (HQRRP).
SIAM J. Sci. Comput.
Per-Gunnar Martinsson, Gregorio Quintana-Ortí, Nathan Heavner, Robert A. van de Geijn
2016 J jnl
Fast Algorithms for the Computation of the Minimum Distance of a Random Linear Code.
CoRR
Fernando Hernando, Francisco D. Igual, Gregorio Quintana-Ortí
2015 J jnl
Householder QR Factorization: Adding Randomization for Column Pivoting. FLAME Working Note #78.
CoRR
Per-Gunnar Martinsson, Gregorio Quintana-Ortí, Nathan Heavner, Robert A. van de Geijn
2014 J jnl
Restructuring the Tridiagonal and Bidiagonal QR Algorithms for Performance.
ACM Trans. Math. Softw.
Field G. Van Zee, Robert A. van de Geijn, Gregorio Quintana-Ortí
2014 J jnl
Towards an efficient use of the BLAS library for multilinear tensor contractions.
Appl. Math. Comput.
Edoardo Di Napoli, Diego Fabregat-Traver, Gregorio Quintana-Ortí, Paolo Bientinesi
2013 J jnl
Scheduling algorithms-by-blocks on small clusters.
Concurr. Comput. Pract. Exp.
Francisco D. Igual, Gregorio Quintana-Ortí, Robert A. van de Geijn
2013 J jnl
Towards an Efficient Use of the BLAS Library for Multilinear Tensor Contractions.
CoRR
Edoardo Di Napoli, Diego Fabregat-Traver, Gregorio Quintana-Ortí, Paolo Bientinesi
2012 J jnl
A Runtime System for Programming Out-of-Core Matrix Algorithms-by-Tiles on Multithreaded Architectures.
ACM Trans. Math. Softw.
Gregorio Quintana-Ortí, Francisco D. Igual, Mercedes Marqués, Enrique S. Quintana-Ortí, Robert A. van de Geijn
2012 J jnl
Families of Algorithms for Reducing a Matrix to Condensed Form.
ACM Trans. Math. Softw.
Field G. Van Zee, Robert A. van de Geijn, Gregorio Quintana-Ortí, G. Joseph Elizondo
2012 J jnl
The FLAME approach: From dense linear algebra algorithms to high-performance multi-accelerator implementations.
J. Parallel Distributed Comput.
Francisco D. Igual, Ernie Chan, Enrique S. Quintana-Ortí, Gregorio Quintana-Ortí, Robert A. van de Geijn, Field G. Van Zee
2011 J jnl
Using desktop computers to solve large-scale dense linear algebra problems.
J. Supercomput.
Mercedes Marqués, Gregorio Quintana-Ortí, Enrique S. Quintana-Ortí, Robert A. van de Geijn
2009 J jnl
Exploiting the capabilities of modern GPUs for dense matrix computations.
Concurr. Comput. Pract. Exp.
Sergio Barrachina, Maribel Castillo, Francisco D. Igual, Rafael Mayo, Enrique S. Quintana-Ortí, Gregorio Quintana-Ortí
2009 — conf
Out-of-Core Computation of the QR Factorization on Multi-core Processors.
Euro-Par
Mercedes Marqués, Gregorio Quintana-Ortí, Enrique S. Quintana-Ortí, Robert A. van de Geijn
2009 J jnl
Out-of-core solution of linear systems on graphics processors.
Int. J. Parallel Emergent Distributed Syst.
Maribel Castillo, Francisco D. Igual, Mercedes Marqués, Rafael Mayo, Enrique S. Quintana-Ortí, Gregorio Quintana-Ortí, Rafael Rubio, Robert A. van de Geijn
2009 J jnl
Parallelizing dense and banded linear algebra libraries using SMPSs.
Concurr. Comput. Pract. Exp.
Rosa M. Badia, José R. Herrero, Jesús Labarta, Josep M. Pérez, Enrique S. Quintana-Ortí, Gregorio Quintana-Ortí
2009 J jnl
Programming matrix algorithms-by-blocks for thread-level parallelism.
ACM Trans. Math. Softw.
Gregorio Quintana-Ortí, Enrique S. Quintana-Ortí, Robert A. van de Geijn, Field G. Van Zee, Ernie Chan
2009 A conf
Solving "large" dense matrix problems on multi-core processors.
IPDPS
Mercedes Marqués, Gregorio Quintana-Ortí, Enrique S. Quintana-Ortí, Robert A. van de Geijn
2009 B conf
Solving dense linear systems on platforms with multiple hardware accelerators.
PPoPP
Gregorio Quintana-Ortí, Francisco D. Igual, Enrique S. Quintana-Ortí, Robert A. van de Geijn
2009 J jnl
The libflame Library for Dense Matrix Computations.
Comput. Sci. Eng.
Field G. Van Zee, Ernie Chan, Robert A. van de Geijn, Enrique S. Quintana-Ortí, Gregorio Quintana-Ortí
2009 J jnl
Toward the parallelization of GSL.
J. Supercomput.
José Ignacio Aliaga, Francisco Almeida, José M. Badía, Sergio Barrachina, Vicente Blanco Pérez, María Isabel Castillo, Rafael Mayo, Enrique S. Quintana-Ortí, Gregorio Quintana-Ortí, Alfredo Remón, Casiano Rodríguez, Francisco de Sande, Adrián Santos
2009 C conf
Using Graphics Processors to Accelerate the Solution of Out-of-Core Linear Systems.
ISPDC
Mercedes Marqués, Gregorio Quintana-Ortí, Enrique S. Quintana-Ortí, Robert A. van de Geijn
2008 — conf
An Algorithm-by-Blocks for SuperMatrix Band Cholesky Factorization.
VECPAR
Gregorio Quintana-Ortí, Enrique S. Quintana-Ortí, Alfredo Remón, Robert A. van de Geijn
2008 A conf
Design of scalable dense linear algebra libraries for multithreaded architectures: the LU factorization.
IPDPS
Gregorio Quintana-Ortí, Enrique S. Quintana-Ortí, Ernie Chan, Robert A. van de Geijn, Field G. Van Zee
2008 C conf
Scheduling of QR Factorization Algorithms on SMP and Multi-Core Architectures.
PDP
Gregorio Quintana-Ortí, Enrique S. Quintana-Ortí, Ernie Chan, Robert A. van de Geijn, Field G. Van Zee
2008 J jnl
Solving linear-quadratic optimal control problems on parallel computers.
Optim. Methods Softw.
Peter Benner, Enrique S. Quintana-Ortí, Gregorio Quintana-Ortí
2008 B conf
SuperMatrix: a multithreaded runtime scheduling system for algorithms-by-blocks.
PPoPP
Ernie Chan, Field G. Van Zee, Paolo Bientinesi, Enrique S. Quintana-Ortí, Gregorio Quintana-Ortí, Robert A. van de Geijn
2007 — conf
Parallel Implementation of LQG Balanced Truncation for Large-Scale Systems.
LSSC
José M. Badía, Peter Benner, Rafael Mayo, Enrique S. Quintana-Ortí, Gregorio Quintana-Ortí, Alfredo Remón
2007 Misc conf
Parallel Solution of Band Linear Systems in Model Reduction.
PPAM
Alfredo Remón, Enrique S. Quintana-Ortí, Gregorio Quintana-Ortí
2007 C conf
Satisfying your dependencies with SuperMatrix.
CLUSTER
Ernie Chan, Field G. Van Zee, Enrique S. Quintana-Ortí, Gregorio Quintana-Ortí, Robert A. van de Geijn
2007 J jnl
Stabilizing large-scale generalized systems on parallel computers using multithreading and message-passing.
Concurr. Comput. Pract. Exp.
Peter Benner, Maribel Castillo, Rafael Mayo, Enrique S. Quintana-Ortí, Gregorio Quintana-Ortí
2007 — conf
Strategies for Parallelizing the Solution of Rational Matrix Equations.
PARCO
José M. Badía, Peter Benner, Maribel Castillo, Heike Faßbender, Rafael Mayo, Enrique S. Quintana-Ortí, Gregorio Quintana-Ortí
2007 B conf
Supermatrix out-of-order scheduling of matrix operations for SMP and multi-core architectures.
SPAA
Ernie Chan, Enrique S. Quintana-Ortí, Gregorio Quintana-Ortí, Robert A. van de Geijn
2007 Misc conf
The Implementation of BLAS for Band Matrices.
PPAM
Alfredo Remón, Enrique S. Quintana-Ortí, Gregorio Quintana-Ortí
2007 — conf
Toward Scalable Matrix Multiply on Multithreaded Architectures.
Euro-Par
Bryan Marker, Field G. Van Zee, Kazushige Goto, Gregorio Quintana-Ortí, Robert A. van de Geijn
2006 — conf
Cholesky Factorization of Band Matrices Using Multithreaded BLAS.
PARA
Alfredo Remón, Enrique S. Quintana-Ortí, Gregorio Quintana-Ortí
2006 J jnl
Improving the performance of reduction to Hessenberg form.
ACM Trans. Math. Softw.
Gregorio Quintana-Ortí, Robert A. van de Geijn
2006 C conf
Parallel LU Factorization of Band Matrices on SMP Systems.
HPCC
Alfredo Remón, Enrique S. Quintana-Ortí, Gregorio Quintana-Ortí
2006 C conf
Parallelization of GSL: The Web Service Interface.
PDP
José Ignacio Aliaga, José M. Badía, Sergio Barrachina, Maribel Castillo, Rafael Mayo, Enrique S. Quintana-Ortí, Gregorio Quintana-Ortí, Francisco Almeida, Vicente Blanco Pérez, Casiano Rodríguez, Francisco de Sande, Adrián Santos
2006 J jnl
Solving Stable Sylvester Equations via Rational Iterative Schemes.
J. Sci. Comput.
Peter Benner, Enrique S. Quintana-Ortí, Gregorio Quintana-Ortí
2006 — conf
Specialized Spectral Division Algorithms for Generalized Eigenproblems Via the Inverse-Free Iteration.
PARA
Mercedes Marqués, Enrique S. Quintana-Ortí, Gregorio Quintana-Ortí
2005 — conf
Parallel Algorithms for Balanced Truncation of Large-Scale Unstable Systems.
CDC/ECC
Sergio Barrachina, Peter Benner, Enrique S. Quintana-Ortí, Gregorio Quintana-Ortí
2005 — conf
Parallel Order Reduction via Balanced Truncation for Optimal Cooling of Steel Profiles.
Euro-Par
José M. Badía, Peter Benner, Rafael Mayo, Enrique S. Quintana-Ortí, Gregorio Quintana-Ortí, Jens Saak
2005 — conf
Parallelization of GSL on Clusters of Symmetric Multiprocessors.
PARCO
José Ignacio Aliaga, Francisco Almeida, José M. Badía, Sergio Barrachina, Vicente Blanco Pérez, Maribel Castillo, Rafael Mayo, Enrique S. Quintana-Ortí, Gregorio Quintana-Ortí, Casiano Rodríguez, Francisco de Sande, Adrián Santos
2004 — conf
Computing Passive Reduced-Order Models for Circuit Simulation.
PARELEC
Peter Benner, Enrique S. Quintana-Ortí, Gregorio Quintana-Ortí
2004 — conf
Computing optimal Hankel norm approximations of large-scale systems.
CDC
Peter Benner, Enrique S. Quintana-Ortí, Gregorio Quintana-Ortí
2004 — conf
Parallel Model Reduction of Large Linear Descriptor Systems via Balanced Truncation.
VECPAR
Peter Benner, Enrique S. Quintana-Ortí, Gregorio Quintana-Ortí
2004 — conf
Parallelization of GSL: Architecture, Interfaces, and Programming Models.
PVM/MPI
José Ignacio Aliaga, Francisco Almeida, José M. Badía, Sergio Barrachina-Mir, Vicente Blanco Pérez, María Isabel Castillo, U. Dorta, Rafael Mayo, Enrique S. Quintana-Ortí, Gregorio Quintana-Ortí, Casiano Rodríguez, Francisco de Sande
2004 — conf
Parallelization of GSL: Performance of Case Studies.
PARA
José Ignacio Aliaga, Francisco Almeida, José M. Badía, Sergio Barrachina, Vicente Blanco Pérez, María Isabel Castillo, U. Dorta, Rafael Mayo, Enrique S. Quintana-Ortí, Gregorio Quintana-Ortí, Casiano Rodríguez, Francisco de Sande
2004 — conf
Parallelization of the GNU Scientific Library on Heterogeneous Systems.
ISPDC/HeteroPar
José Ignacio Aliaga, Francisco Almeida, José Manuel Badía-Contelles, Sergio Barrachina-Mir, Vicente Blanco Pérez, María Isabel Castillo, U. Dorta, Rafael Mayo, Enrique S. Quintana-Ortí, Gregorio Quintana-Ortí, Casiano Rodríguez, Francisco de Sande
2003 — conf
Parallel Model Reduction of Large-Scale Unstable Systems.
PARCO
Peter Benner, María Isabel Castillo, Enrique S. Quintana-Ortí, Gregorio Quintana-Ortí
2003 J jnl
Parallel algorithms for model reduction of discrete-time systems.
Int. J. Syst. Sci.
Peter Benner, Enrique S. Quintana-Ortí, Gregorio Quintana-Ortí
2003 A conf
Remote Model Reduction of Very Large Linear Systems.
IPDPS
Peter Benner, Rafael Mayo, Enrique S. Quintana-Ortí, Gregorio Quintana-Ortí
2003 J jnl
State-space truncation methods for parallel model reduction of large-scale systems.
Parallel Comput.
Peter Benner, Enrique S. Quintana-Ortí, Gregorio Quintana-Ortí
2002 — conf
Enhanced Services for Remote Model Reduction of Large-Scale Dense Linear Systems.
PARA
Peter Benner, Rafael Mayo, Enrique S. Quintana-Ortí, Gregorio Quintana-Ortí
2002 J jnl
Numerical solution of discrete stable linear matrix equations on multicomputers.
Parallel Algorithms Appl.
Peter Benner, Enrique S. Quintana-Ortí, Gregorio Quintana-Ortí
2002 — conf
Remote Parallel Model Reduction of Linear Time-Invariant Systems Made Easy.
VECPAR
Peter Benner, Rafael Mayo, Enrique S. Quintana-Ortí, Gregorio Quintana-Ortí
2001 J jnl
A Note On Parallel Matrix Inversion.
SIAM J. Sci. Comput.
Enrique S. Quintana-Ortí, Gregorio Quintana-Ortí, Xiaobai Sun, Robert A. van de Geijn
2001 J jnl
Efficient Algorithms for the Block Hessenberg Form.
J. Supercomput.
Enrique S. Quintana-Ortí, Gregorio Quintana-Ortí, Maribel Castillo, Vicente Hernández
2001 J jnl
Parallel solvers for discrete-time algebric Riccati equations.
Concurr. Comput. Pract. Exp.
Rafael Mayo, Enrique S. Quintana-Ortí, Gregorio Quintana-Ortí, Vicente Hernández
2000 — conf
Parallel Pole Assignment of Single-Input Systems.
VECPAR
Maribel Castillo, Enrique S. Quintana-Ortí, Gregorio Quintana-Ortí, Vicente Hernández
2000 J jnl
Solving algebraic Riccati equations on parallel computers using Newton's method with exact line search.
Parallel Comput.
Peter Benner, Ralph Byers, Enrique S. Quintana-Ortí, Gregorio Quintana-Ortí
1999 — conf
Solving Stable Stein Equations on Distributed Memory Computers.
Euro-Par
Peter Benner, Enrique S. Quintana-Ortí, Gregorio Quintana-Ortí
1998 J jnl
A BLAS-3 Version of the QR Factorization with Column Pivoting.
SIAM J. Sci. Comput.
Gregorio Quintana-Ortí, Xiaobai Sun, Christian H. Bischof
1998 — conf
A Portable Subroutine Library for Solving Linear Control Problems on Distributed Memory Computers.
Wide Area Networks and High Performance Computing
Peter Benner, Enrique S. Quintana-Ortí, Gregorio Quintana-Ortí
1998 J jnl
Algorithm 782: Codes for Rank-Revealing QR Factorizations of Dense Matrices.
ACM Trans. Math. Softw.
Christian H. Bischof, Gregorio Quintana-Ortí
1998 J jnl
Computing Rank-Revealing QR Factorizations of Dense Matrices.
ACM Trans. Math. Softw.
Christian H. Bischof, Gregorio Quintana-Ortí
1998 J jnl
Efficient Solution Of The Rank-Deficient Linear Least Squares Problem.
SIAM J. Sci. Comput.
Gregorio Quintana-Ortí, Enrique S. Quintana-Ortí, Antoine Petitet