A Portable Subroutine Library for Solving Linear Control Problems on Distributed Memory Computers. - Peter Benner; Enrique S. Quintana-Ortí; Gregorio Quintana-Ortí (Wide Area Networks and High Performance Computing, 1998)

Efficient Solution Of The Rank-Deficient Linear Least Squares Problem. - Gregorio Quintana-Ortí; Enrique S. Quintana-Ortí; Antoine Petitet (SIAM J. Sci. Comput., 1998)

A BLAS-3 Version of the QR Factorization with Column Pivoting. - Gregorio Quintana-Ortí; Xiaobai Sun; Christian H. Bischof (SIAM J. Sci. Comput., 1998)

Computing Rank-Revealing QR Factorizations of Dense Matrices. - Christian H. Bischof; Gregorio Quintana-Ortí (ACM Trans. Math. Softw., 1998)

Algorithm 782: Codes for Rank-Revealing QR Factorizations of Dense Matrices. - Christian H. Bischof; Gregorio Quintana-Ortí (ACM Trans. Math. Softw., 1998)

Solving Stable Stein Equations on Distributed Memory Computers. - Peter Benner; Enrique S. Quintana-Ortí; Gregorio Quintana-Ortí (Euro-Par, 1999)

Parallel Pole Assignment of Single-Input Systems. - Maribel Castillo; Enrique S. Quintana-Ortí; Gregorio Quintana-Ortí; Vicente Hernández (VECPAR, 2000)

Solving algebraic Riccati equations on parallel computers using Newton's method with exact line search. - Peter Benner; Ralph Byers; Enrique S. Quintana-Ortí; Gregorio Quintana-Ortí (Parallel Comput., 2000)

Parallel solvers for discrete-time algebric Riccati equations. - Rafael Mayo 002; Enrique S. Quintana-Ortí; Gregorio Quintana-Ortí; Vicente Hernández (Concurr. Comput. Pract. Exp., 2001)

A Note On Parallel Matrix Inversion. - Enrique S. Quintana-Ortí; Gregorio Quintana-Ortí; Xiaobai Sun; Robert A. van de Geijn (SIAM J. Sci. Comput., 2001)

Efficient Algorithms for the Block Hessenberg Form. - Enrique S. Quintana-Ortí; Gregorio Quintana-Ortí; Maribel Castillo; Vicente Hernández (J. Supercomput., 2001)

Enhanced Services for Remote Model Reduction of Large-Scale Dense Linear Systems. - Peter Benner; Rafael Mayo 002; Enrique S. Quintana-Ortí; Gregorio Quintana-Ortí (PARA, 2002)

Remote Parallel Model Reduction of Linear Time-Invariant Systems Made Easy. - Peter Benner; Rafael Mayo 002; Enrique S. Quintana-Ortí; Gregorio Quintana-Ortí (VECPAR, 2002)

Numerical solution of discrete stable linear matrix equations on multicomputers. - Peter Benner; Enrique S. Quintana-Ortí; Gregorio Quintana-Ortí (Parallel Algorithms Appl., 2002)

Remote Model Reduction of Very Large Linear Systems. - Peter Benner; Rafael Mayo 002; Enrique S. Quintana-Ortí; Gregorio Quintana-Ortí (IPDPS, 2003)

Parallel Model Reduction of Large-Scale Unstable Systems. - Peter Benner; María Isabel Castillo; Enrique S. Quintana-Ortí; Gregorio Quintana-Ortí (PARCO, 2003)

Parallel algorithms for model reduction of discrete-time systems. - Peter Benner; Enrique S. Quintana-Ortí; Gregorio Quintana-Ortí (Int. J. Syst. Sci., 2003)

State-space truncation methods for parallel model reduction of large-scale systems. - Peter Benner; Enrique S. Quintana-Ortí; Gregorio Quintana-Ortí (Parallel Comput., 2003)

Computing optimal Hankel norm approximations of large-scale systems. - Peter Benner; Enrique S. Quintana-Ortí; Gregorio Quintana-Ortí (CDC, 2004)

Parallelization of the GNU Scientific Library on Heterogeneous Systems. - José Ignacio Aliaga; Francisco Almeida; José Manuel Badía-Contelles; Sergio Barrachina-Mir; Vicente Blanco Pérez; María Isabel Castillo; U. Dorta; Rafael Mayo 002; Enrique S. Quintana-Ortí; Gregorio Quintana-Ortí; Casiano Rodríguez; Francisco de Sande (ISPDC/HeteroPar, 2004)

Parallelization of GSL: Performance of Case Studies. - José Ignacio Aliaga; Francisco Almeida; José M. Badía; Sergio Barrachina 001; Vicente Blanco Pérez; María Isabel Castillo; U. Dorta; Rafael Mayo 002; Enrique S. Quintana-Ortí; Gregorio Quintana-Ortí; Casiano Rodríguez; Francisco de Sande (PARA, 2004)

Computing Passive Reduced-Order Models for Circuit Simulation. - Peter Benner; Enrique S. Quintana-Ortí; Gregorio Quintana-Ortí (PARELEC, 2004)

Parallelization of GSL: Architecture, Interfaces, and Programming Models. - José Ignacio Aliaga; Francisco Almeida; José M. Badía; Sergio Barrachina-Mir; Vicente Blanco Pérez; María Isabel Castillo; U. Dorta; Rafael Mayo 002; Enrique S. Quintana-Ortí; Gregorio Quintana-Ortí; Casiano Rodríguez; Francisco de Sande (PVM/MPI, 2004)

Parallel Model Reduction of Large Linear Descriptor Systems via Balanced Truncation. - Peter Benner; Enrique S. Quintana-Ortí; Gregorio Quintana-Ortí (VECPAR, 2004)

Parallel Algorithms for Balanced Truncation of Large-Scale Unstable Systems. - Sergio Barrachina 001; Peter Benner; Enrique S. Quintana-Ortí; Gregorio Quintana-Ortí (CDC/ECC, 2005)

Parallel Order Reduction via Balanced Truncation for Optimal Cooling of Steel Profiles. - José M. Badía; Peter Benner; Rafael Mayo 002; Enrique S. Quintana-Ortí; Gregorio Quintana-Ortí; Jens Saak (Euro-Par, 2005)

Parallelization of GSL on Clusters of Symmetric Multiprocessors. - José Ignacio Aliaga; Francisco Almeida; José M. Badía; Sergio Barrachina 001; Vicente Blanco Pérez; Maribel Castillo; Rafael Mayo 002; Enrique S. Quintana-Ortí; Gregorio Quintana-Ortí; Casiano Rodríguez; Francisco de Sande; Adrián Santos (PARCO, 2005)

Parallel LU Factorization of Band Matrices on SMP Systems. - Alfredo Remón; Enrique S. Quintana-Ortí; Gregorio Quintana-Ortí (HPCC, 2006)

Specialized Spectral Division Algorithms for Generalized Eigenproblems Via the Inverse-Free Iteration. - Mercedes Marqués 001; Enrique S. Quintana-Ortí; Gregorio Quintana-Ortí (PARA, 2006)

Cholesky Factorization of Band Matrices Using Multithreaded BLAS. - Alfredo Remón; Enrique S. Quintana-Ortí; Gregorio Quintana-Ortí (PARA, 2006)

Parallelization of GSL: The Web Service Interface. - José Ignacio Aliaga; José M. Badía; Sergio Barrachina 001; Maribel Castillo; Rafael Mayo 002; Enrique S. Quintana-Ortí; Gregorio Quintana-Ortí; Francisco Almeida; Vicente Blanco Pérez; Casiano Rodríguez; Francisco de Sande; Adrián Santos (PDP, 2006)

Solving Stable Sylvester Equations via Rational Iterative Schemes. - Peter Benner; Enrique S. Quintana-Ortí; Gregorio Quintana-Ortí (J. Sci. Comput., 2006)

Improving the performance of reduction to Hessenberg form. - Gregorio Quintana-Ortí; Robert A. van de Geijn (ACM Trans. Math. Softw., 2006)

Satisfying your dependencies with SuperMatrix. - Ernie Chan; Field G. Van Zee; Enrique S. Quintana-Ortí; Gregorio Quintana-Ortí; Robert A. van de Geijn (CLUSTER, 2007)

Toward Scalable Matrix Multiply on Multithreaded Architectures. - Bryan Marker; Field G. Van Zee; Kazushige Goto; Gregorio Quintana-Ortí; Robert A. van de Geijn (Euro-Par, 2007)

Parallel Implementation of LQG Balanced Truncation for Large-Scale Systems. - José M. Badía; Peter Benner; Rafael Mayo 002; Enrique S. Quintana-Ortí; Gregorio Quintana-Ortí; Alfredo Remón (LSSC, 2007)

Strategies for Parallelizing the Solution of Rational Matrix Equations. - José M. Badía; Peter Benner; Maribel Castillo; Heike Faßbender; Rafael Mayo 002; Enrique S. Quintana-Ortí; Gregorio Quintana-Ortí (PARCO, 2007)

The Implementation of BLAS for Band Matrices. - Alfredo Remón; Enrique S. Quintana-Ortí; Gregorio Quintana-Ortí (PPAM, 2007)

Parallel Solution of Band Linear Systems in Model Reduction. - Alfredo Remón; Enrique S. Quintana-Ortí; Gregorio Quintana-Ortí (PPAM, 2007)

Supermatrix out-of-order scheduling of matrix operations for SMP and multi-core architectures. - Ernie Chan; Enrique S. Quintana-Ortí; Gregorio Quintana-Ortí; Robert A. van de Geijn (SPAA, 2007)

Stabilizing large-scale generalized systems on parallel computers using multithreading and message-passing. - Peter Benner; Maribel Castillo; Rafael Mayo 002; Enrique S. Quintana-Ortí; Gregorio Quintana-Ortí (Concurr. Comput. Pract. Exp., 2007)

Design of scalable dense linear algebra libraries for multithreaded architectures: the LU factorization. - Gregorio Quintana-Ortí; Enrique S. Quintana-Ortí; Ernie Chan; Robert A. van de Geijn; Field G. Van Zee (IPDPS, 2008)

Scheduling of QR Factorization Algorithms on SMP and Multi-Core Architectures. - Gregorio Quintana-Ortí; Enrique S. Quintana-Ortí; Ernie Chan; Robert A. van de Geijn; Field G. Van Zee (PDP, 2008)

SuperMatrix: a multithreaded runtime scheduling system for algorithms-by-blocks. - Ernie Chan; Field G. Van Zee; Paolo Bientinesi; Enrique S. Quintana-Ortí; Gregorio Quintana-Ortí; Robert A. van de Geijn (PPoPP, 2008)

An Algorithm-by-Blocks for SuperMatrix Band Cholesky Factorization. - Gregorio Quintana-Ortí; Enrique S. Quintana-Ortí; Alfredo Remón; Robert A. van de Geijn (VECPAR, 2008)

Solving linear-quadratic optimal control problems on parallel computers. - Peter Benner; Enrique S. Quintana-Ortí; Gregorio Quintana-Ortí (Optim. Methods Softw., 2008)

Out-of-Core Computation of the QR Factorization on Multi-core Processors. - Mercedes Marqués 001; Gregorio Quintana-Ortí; Enrique S. Quintana-Ortí; Robert A. van de Geijn (Euro-Par, 2009)

Solving "large" dense matrix problems on multi-core processors. - Mercedes Marqués 001; Gregorio Quintana-Ortí; Enrique S. Quintana-Ortí; Robert A. van de Geijn (IPDPS, 2009)

Using Graphics Processors to Accelerate the Solution of Out-of-Core Linear Systems. - Mercedes Marqués 001; Gregorio Quintana-Ortí; Enrique S. Quintana-Ortí; Robert A. van de Geijn (ISPDC, 2009)

Solving dense linear systems on platforms with multiple hardware accelerators. - Gregorio Quintana-Ortí; Francisco D. Igual; Enrique S. Quintana-Ortí; Robert A. van de Geijn (PPoPP, 2009)

Parallelizing dense and banded linear algebra libraries using SMPSs. - Rosa M. Badia; José R. Herrero 001; Jesús Labarta; Josep M. Pérez; Enrique S. Quintana-Ortí; Gregorio Quintana-Ortí (Concurr. Comput. Pract. Exp., 2009)

Exploiting the capabilities of modern GPUs for dense matrix computations. - Sergio Barrachina 001; Maribel Castillo; Francisco D. Igual; Rafael Mayo 002; Enrique S. Quintana-Ortí; Gregorio Quintana-Ortí (Concurr. Comput. Pract. Exp., 2009)

The libflame Library for Dense Matrix Computations. - Field G. Van Zee; Ernie Chan; Robert A. van de Geijn; Enrique S. Quintana-Ortí; Gregorio Quintana-Ortí (Comput. Sci. Eng., 2009)

Out-of-core solution of linear systems on graphics processors. - Maribel Castillo; Francisco D. Igual; Mercedes Marqués 001; Rafael Mayo 002; Enrique S. Quintana-Ortí; Gregorio Quintana-Ortí; Rafael Rubio; Robert A. van de Geijn (Int. J. Parallel Emergent Distributed Syst., 2009)

Toward the parallelization of GSL. - José Ignacio Aliaga; Francisco Almeida; José M. Badía; Sergio Barrachina 001; Vicente Blanco Pérez; María Isabel Castillo; Rafael Mayo 002; Enrique S. Quintana-Ortí; Gregorio Quintana-Ortí; Alfredo Remón; Casiano Rodríguez; Francisco de Sande; et al. (J. Supercomput., 2009)

Programming matrix algorithms-by-blocks for thread-level parallelism. - Gregorio Quintana-Ortí; Enrique S. Quintana-Ortí; Robert A. van de Geijn; Field G. Van Zee; Ernie Chan (ACM Trans. Math. Softw., 2009)

Using desktop computers to solve large-scale dense linear algebra problems. - Mercedes Marqués 001; Gregorio Quintana-Ortí; Enrique S. Quintana-Ortí; Robert A. van de Geijn (J. Supercomput., 2011)

The FLAME approach: From dense linear algebra algorithms to high-performance multi-accelerator implementations. - Francisco D. Igual; Ernie Chan; Enrique S. Quintana-Ortí; Gregorio Quintana-Ortí; Robert A. van de Geijn; Field G. Van Zee (J. Parallel Distributed Comput., 2012)

A Runtime System for Programming Out-of-Core Matrix Algorithms-by-Tiles on Multithreaded Architectures. - Gregorio Quintana-Ortí; Francisco D. Igual; Mercedes Marqués 001; Enrique S. Quintana-Ortí; Robert A. van de Geijn (ACM Trans. Math. Softw., 2012)

Families of Algorithms for Reducing a Matrix to Condensed Form. - Field G. Van Zee; Robert A. van de Geijn; Gregorio Quintana-Ortí; G. Joseph Elizondo (ACM Trans. Math. Softw., 2012)

Scheduling algorithms-by-blocks on small clusters. - Francisco D. Igual; Gregorio Quintana-Ortí; Robert A. van de Geijn (Concurr. Comput. Pract. Exp., 2013)

Towards an efficient use of the BLAS library for multilinear tensor contractions. - Edoardo Di Napoli; Diego Fabregat-Traver; Gregorio Quintana-Ortí; Paolo Bientinesi (Appl. Math. Comput., 2014)

Restructuring the Tridiagonal and Bidiagonal QR Algorithms for Performance. - Field G. Van Zee; Robert A. van de Geijn; Gregorio Quintana-Ortí (ACM Trans. Math. Softw., 2014)

Householder QR Factorization: Adding Randomization for Column Pivoting. FLAME Working Note #78. - Per-Gunnar Martinsson; Gregorio Quintana-Ortí; Nathan Heavner; Robert A. van de Geijn (CoRR, 2015)

Fast Algorithms for the Computation of the Minimum Distance of a Random Linear Code. - Fernando Hernando; Francisco D. Igual; Gregorio Quintana-Ortí (CoRR, 2016)

Householder QR Factorization With Randomization for Column Pivoting (HQRRP). - Per-Gunnar Martinsson; Gregorio Quintana-Ortí; Nathan Heavner; Robert A. van de Geijn (SIAM J. Sci. Comput., 2017)

Parallel Implementations for Computing the Minimum Distance of a Random Linear Code on Multicomputers. - Gregorio Quintana-Ortí; Fernando Hernando; Francisco D. Igual (CoRR, 2019)

Algorithm 994: Fast Implementations of the Brouwer-Zimmermann Algorithm for the Computation of the Minimum Distance of a Random Linear Code. - Fernando Hernando; Francisco D. Igual; Gregorio Quintana-Ortí (ACM Trans. Math. Softw., 2019)

randUTV: A Blocked Randomized Algorithm for Computing a Rank-Revealing UTV Factorization. - Per-Gunnar Martinsson; Gregorio Quintana-Ortí; Nathan Heavner (ACM Trans. Math. Softw., 2019)

Computed tomography medical image reconstruction on affordable equipment by using Out-Of-Core techniques. - Mónica Chillarón; Gregorio Quintana-Ortí; Vicente Vidal; Gumersindo Verdú (Comput. Methods Programs Biomed., 2020)

Efficient algorithms for computing a rank-revealing UTV factorization on parallel computing architectures. - Nathan Heavner; Francisco D. Igual; Gregorio Quintana-Ortí; Per-Gunnar Martinsson (CoRR, 2021)

Students' Perception of the Effect of Formative Assessment on Their Learning. - Mercedes Marqués Andrés; José Manuel Badía-Contelles; Gregorio Quintana-Ortí (Rev. Iberoam. de Tecnol. del Aprendiz., 2021)

High-performance reconstruction of CT medical images by using out-of-core methods in GPU. - Gregorio Quintana-Ortí; Mónica Chillarón; Vicente Vidal; Gumersindo Verdú (Comput. Methods Programs Biomed., 2022)

Algorithm 1022: Efficient Algorithms for Computing a Rank-Revealing UTV Factorization on Parallel Computing Architectures. - Nathan Heavner; Francisco D. Igual; Gregorio Quintana-Ortí; Per-Gunnar Martinsson (ACM Trans. Math. Softw., 2022)

Computing rank-revealing factorizations of matrices stored out-of-core. - Nathan Heavner; Per-Gunnar Martinsson; Gregorio Quintana-Ortí (Concurr. Comput. Pract. Exp., 2023)

Algorithm 1033: Parallel Implementations for Computing the Minimum Distance of a Random Linear Code on Distributed-memory Architectures. - Gregorio Quintana-Ortí; Fernando Hernando; Francisco D. Igual (ACM Trans. Math. Softw., 2023)

Solving Large Rank-Deficient Linear Least-Squares Problems on Shared-Memory CPU Architectures and GPU Architectures. - Mónica Chillarón; Gregorio Quintana-Ortí; Vicente Vidal; Per-Gunnar Martinsson (CoRR, 2024)

Fast Algorithms and Implementations for Computing the Minimum Distance of Quantum Codes. - Fernando Hernando; Gregorio Quintana-Ortí; Markus Grassl (CoRR, 2024)

Direct Low-Dose CT Image Reconstruction on GPU using Out-Of-Core: Precision and Quality Study. - Mónica Chillarón; Gregorio Quintana-Ortí; Vicente Vidal; Gumersindo Verdú Martín (CoRR, 2024)