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Listar por autor "Aliaga Estellés, José Ignacio"

Mostrando ítems 1-7 de 7

Accelerating the task/data-parallel version of ILUPACK¿s BiCG in multi-CPU/GPU configurations

Aliaga, Jose I.; Dufrechou, Ernesto; Ezzatti, Pablo; Quintana-Ortí, Enrique S. (Elsevier, 2019-07)

[EN] ILUPACK is a valuable tool for the solution of sparse linear systems via iterative Krylov subspace-based methods. Its relevance for the solution of real problems has motivated several efforts to enhance its performance ...
An efficient GPU version of the preconditioned GMRES method

Aliaga, Jose I.; Dufrechou, Ernesto; Ezzatti, Pablo; Quintana-Orti, Enrique S. (Springer-Verlag, 2019-03)

[EN] In a large number of scientific applications, the solution of sparse linear systems is the stage that concentrates most of the computational effort. This situation has motivated the study and development of several ...
Aprovechamiento del paralelismo de tareas en factorizaciones de matrices jerárquicas sobre procesadores multinúcleo

Carratalá Sáez, Rocío (Universitat Politècnica de València, 2016-09-02)

[EN] Hierarchical matrices are a numerical tool for representing, in a sparse way and in a linear-logarithmic storage cost, dense problems that arise in integral and partial differential equations. For some basic linear ...
Compression and load balancing for efficient sparse matrix-vector product on multicore processors and graphics processing units

Aliaga, José I.; Anzt, Hartwig; Grützmacher, Thomas; Quintana-Ortí, Enrique S.; Tomás Domínguez, Andrés Enrique (John Wiley & Sons, 2022-06-25)

[EN] We contribute to the optimization of the sparse matrix-vector product by introducing a variant of the coordinate sparse matrix format that balances the workload distribution and compresses both the indexing arrays and ...
Exploiting nested task-parallelism in the H-LU factorization

Carratalá-Sáez, Rocío; Christophersen, Sven; Aliaga, José I.; Beltrán, Vicenç; Börm, Steffen; Quintana Ortí, Enrique Salvador (Elsevier, 2019-04)

[EN] We address the parallelization of the LU factorization of hierarchical matrices (H-matrices) arising from boundary element methods. Our approach exploits task-parallelism via the OmpSs programming model and runtime, ...
Fast Band--Krylov Eigensolver for Macromolecular Functional Motion Simulation on Multicore Architectures and Graphics Processors

Aliaga, Jose I.; Alonso Jordá, Pedro; Badía Contelles, José Manuel; Chacon, Pablo; Davidovic, Davo; Lopez-Blanco, Jose R.; Quintana-Orti, Enrique S (Elsevier, 2016-03-15)

We introduce a new iterative Krylov subspace-based eigensolver for the simulation of macromolecular motions on desktop multithreaded platforms equipped with multicore processors and, possibly, a graphics accelerator ...
Reproducibility of parallel preconditioned conjugate gradient in hybrid programming environments

Iakymchuk, Roman; Barreda Vayá, Maria; Graillat, Stef; Aliaga, José I.; Quintana Ortí, Enrique Salvador (SAGE Publications, 2020-09)

[EN] The Preconditioned Conjugate Gradient method is often employed for the solution of linear systems of equations arising in numerical simulations of physical phenomena. While being widely used, the solver is also known ...