Browsing by Subject "OpenMP"

A parallel method for impulsive image noise removal on hybrid CPU/GPU systems

Sánchez, M. G.; Vidal, V.; Bataller Mascarell, Jordi; Arnal, J. (Elsevier, 2013)

[EN] A parallel algorithm for image noise removal is proposed. The algorithm is based on peer group concept and uses a fuzzy metric. An optimization study on the use of the CUDA platform to remove impulsive noise using ...

Algoritmos Paralelos de Reconstrucción de Imágenes TAC sobre Arquitecturas Heterogéneas

Flores, Liubov Alexandrovna (Universitat Politècnica de València, 2016-01-07)

[EN] In medicine, the diagnosis based on computed tomography (CT) imaging is fundamental for the detection of abnormal tissues by different attenuation values on X-ray energy, which frequently are not clearly distinguished ...

Analysis of threading libraries for high performance computing

Castelló, Adrián; Mayo Gual, Rafael; Seo, Sangmin; Balaji, Pavan; Quintana Ortí, Enrique Salvador; Peña, Antonio J. (Institute of Electrical and Electronics Engineers, 2020-09-01)

[EN] With the appearance of multi-/many core machines, applications and runtime systems have evolved in order to exploit the new on-node concurrency brought by new software paradigms. POSIX threads (Pthreads) was widely-adopted ...

Efficient Simulation of Water Distribution Systems using OpenMP

Alvarruiz Bermejo, Fernando; Martínez Alzamora, Fernando; Vidal Maciá, Antonio Manuel (CMMSE, 2015-07)

[EN] Hydraulic solvers for the simulation of flows and pressures in water distribution systems (WDS) are used extensively, and their computational performance is key when considering optimization problems. This paper ...

Estudio comparativo de las prestaciones de diferentes modelos de programación paralela

Gil Arcas, Enrique (Universitat Politècnica de València, 2015-10-14)

[ES] Hoy día disponemos de múltiples soluciones para el procesamiento de grandes volúmenes de datos, pero no es trivial seleccionar la más adecuada para cada tipo de situación. Debemos tener en cuenta, en cada caso, el ...

High performance lattice reduction on heterogeneous computing platform

Jozsa, Csaba M; Domene Oltra, Fernando; Vidal Maciá, Antonio Manuel; Piñero Sipán, María Gemma; González Salvador, Alberto (Springer Verlag (Germany), 2014-11)

The lattice reduction (LR) technique has become very important in many engineering fields. However, its high complexity makes difficult its use in real-time applications, especially in applications that deal with large ...

Image Noise Removal on Heterogeneous CPU-GPU Configurations

Sanchez, Maria G.; Vidal Gimeno, Vicente Emilio; Arnal, Josep; Vidal Meló, Anna (Elsevier, 2014)

A parallel algorithm to remove impulsive noise in digital images using heterogeneous CPU/GPU computing is proposed. The parallel denoising algorithm is based on the peer group concept and uses an Euclidean metric. In order ...

Improved Error Correction of NGS Data

Alic, Andrei Stefan (Universitat Politècnica de València, 2016-07-15)

[EN] The work done for this doctorate thesis focuses on error correction of Next Generation Sequencing (NGS) data in the context of High Performance Computing (HPC). Due to the reduction in sequencing cost, the increasing ...

Improving the performance of water distribution systems’ simulation on multicore systems

Alvarruiz Bermejo, Fernando; Martínez Alzamora, Fernando; Vidal Maciá, Antonio Manuel (Springer, 2016-01-18)

Hydraulic solvers for the simulation of flows and pressures in water distribution systems (WDS) are used extensively, and their computational performance is key when considering optimization problems. This paper presents ...

Neville elimination on multi- and many-core systems: OpenMP, MPI and CUDA

Alonso, P.; Cortina, R.; Martínez Zaldívar, Francisco José; Ranilla, J. (Springer Verlag (Germany), 2011-11)

[EN] This paper describes several parallel algorithmic variations of the Neville elimination. This elimination solves a system of linear equations making zeros in a matrix column by adding to each row an adequate multiple ...

Optimización de software científico mediante diversas herramientas de paralelización

Pasogias Guallart, Juan Teodoro (Universitat Politècnica de València, 2019-10-25)

[ES] El presente trabajo de final de máster presenta una comparativa entre dos herramientas de paralelización de CPUs multi-core. El entorno de trabajo sobre el que se realiza la comparativa es un benchmark, una herramienta ...

Optimización en procesadores ARM de la descomposición matricial QR para Beamforming

Ruiz Andrés, Enrique (Universitat Politècnica de València, 2017-10-05)

[ES] Los procesadores de propósito general y bajo consumo ARM que se montan en una amplía gama de dispositivos móviles y sistemas embebidos están revolucionando el mundo de la tecnología, que hoy en día implica casi ...

Paralelización Híbrida del código AHF para el post-procesado de Simulaciones Cosmológicas

Campos del Pozo, Fernando (Universitat Politècnica de València, 2015-02-11)

[EN] Hybrid parallelization of AHF software (http://popia.ft.uam.es/AHF), a halo finder meant to discover cosmological structures analyzing the results of cosmological simulations. The software is already distributed using ...

Peer group and fuzzy metric to remove noise in images using heterogeneous computing

Sanchez, Guadalupe; Vidal Gimeno, Vicente Emilio; Bataller Mascarell, Jordi (Springer Verlag (Germany), 2012)

In this paper, we report a study on the parallelization of an algorithm for removing impulsive noise in images. The algorithm is based on the concept of peer group and fuzzy metric. We have developed implementations ...

Programming parallel dense matrix factorizations with look-ahead and OpenMP

Catalán, Sandra; Castelló, Adrián; Igual, Francisco D.; Rodríguez-Sánchez, Rafael; Quintana Ortí, Enrique Salvador (Springer-Verlag, 2020-03)

[EN] We investigate a parallelization strategy for dense matrix factorization (DMF) algorithms, using OpenMP, that departs from the legacy (or conventional) solution, which simply extracts concurrency from a multi-threaded ...

Reducción del Tiempo de Simulación de Redes de Distribución de Agua, mediante el Método de Mallas y la Computación de Altas Prestaciones

Alvarruiz Bermejo, Fernando (Universitat Politècnica de València, 2016-03-14)

[EN] Computer simulation of water distribution networks by means of mathematical models is nowadays an indispensable tool for the design and exploitation of those networks. Simulation is used not only for the design of new ...

Resolución del problema de enrutamiento del autobús escolar

Domenech Sena, Eric (Universitat Politècnica de València, 2019-10-03)

[ES] La finalidad de este trabajo es obtener una solución exacta y eficiente del problema de enrutamiento de un autobús escolar. Lo que se pretende es realizar una aplicación con la que poder planificar las rutas óptimas ...

Solución en paralelo del problema de la mochila

Verdeguer López, David (Universitat Politècnica de València, 2017-09-13)

[ES] El problema de la mochila es un problema NP-Completo bien conocido, que, en sus diferentes variantes, tiene un gran interés, tanto teórico como práctico, y ha sido sujeto de un amplio número de estudios. Si bien la ...

Browsing by Subject "OpenMP"

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Browsing by Subject "OpenMP"