Listar Arquitectura de Computadores - (AC) por título
Mostrando ítems 147-166 de 183
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Reorganización de matrices en algoritmos de barrido radial sobre Modelos Digitales del Terreno
Es muy frecuente, en los sistemas de información geográfica que trabajan con modelos digitales del terreno, el uso de algoritmos de barrido radial para el estudio de variables asociadas a parámetros cuya magnitud decrece ... -
Reproducible SUmmation under HUB Format
Floating point reproducibility is a property claimed by programmers and end users. Half-Unit-Biased (HUB) is a new representation format in which the round to nearest is carried out by truncation, preventing any ... -
Robust tracking for augmented reality
González-Linares, José María
; Guil-Mata, Nicolás; Ramos-Cózar, Julián (2015-06-17)
In this paper a method for improving a tracking algorithm in an augmented reality application is presented. This method addresses several issues to this particular application, like marker-less tracking and color constancy ... -
Runtime Aware Architectures; Barcelona Supercomputing Center at a glance
(2015-03-05)In the last few years, the traditional ways to keep the increase of hardware performance to the rate predicted by the Moore's Law have vanished. When uni-cores were the norm, hardware design was decoupled from the software ... -
Scalability Analysis of Signatures in Transactional Memory Systems
Signatures have been proposed in transactional memory systems to represent read and write sets and to decouple transaction conflict detection from private caches or to accelerate it. Generally, signatures are implemented ... -
Scheduling strategies for parallel patterns on heterogeneous architectures
(UMA Editorial, 2017)During the last decade, power consumption and energy efficiency have become key aspects in processor design. Nowadays, the power consumption is the principal limitation for further scaling of chip multiprocessors design ... -
A scheduling theory framework for GPU tasks efficient execution
Lázaro Muñoz, Antonio José; López Albelda, Bernabé; González-Linares, José María; Guil-Mata, Nicolás (2018-07-16)
Concurrent execution of tasks in GPUs can reduce the computation time of a workload by overlapping data transfer and execution commands. However it is difficult to implement an efficient run- time scheduler ... -
Simplified Floating-Point Units for High Dynamic Range Image and Video Systems
Hormigo-Aguilar, Javier; Villalba-Moreno, Julio (2015-06-29)
The upcoming arrival of high dynamic range image and video applications to consumer electronics will force the utilization of floating-point numbers on them. This paper shows that introducing a slight modification on ... -
Un sistema de evaluación de innumerables variantes para tiempos de confinamiento.
Romero, Javier; Romero, Felipe; Bandera-Burgueño, Gerardo; Romero-Gómez, Luis Felipe; Romero, Felipe (Universidad de Las Palmas de Gran Canaria, 2020)
En apenas unos meses, y debido a la pandemia mundial del COVID19, se ha producido un cambio dramático en el contexto educativo que ha obligado a los docentes de todo el mundo a resolver problemas académicos que inmediatamente ... -
Siting Multiple Observers for Maximum Coverage: An Accurate Approach
(2015-06-05)The selection of the minimal number of observers that ensures the maximum visual coverage over an area represented by a digital elevation model (DEM) have great interest in many elds, e.g., telecommunications, environment ... -
SkewEngine: enhancing performance of intensive calculations on regular meshes
In various applications such as hyperspectral data manipulation, MRI data exploration, or visual basin identification in digital elevation models, performing arithmetic operations on each point of a data mesh that involve ... -
SkewEngine: enhancing performance of intensive calculations on regular meshes
Romero, Felipe; Ortigosa, Pilar M.; Bandera-Burgueño, Gerardo; Romero-Gómez, Luis Felipe (Springer Nature, 2024-02-24)
In various applications such as hyperspectral data manipulation, MRI data exploration, or viewshed identification in digital elevation models, performing arithmetic operations on each point of a data mesh that involves ... -
SkewEngine: reorganización de mallas regulares para cálculo intensivo
En muchas aplicaciones, tales como la manipulación de datos hiperespectrales, la exploración de datos de resonancia magnética o la identificación de cuencas visuales en modelos digitales de elevación, es necesario realizar ... -
Smith-Waterman Acceleration in Multi-GPUs: A Performance per Watt Analysis
Pérez-Serrano, Jesús; Sandes, Edans; Melo, Alba; Ujaldon-Martínez, Manuel (Springer, 2017)
We present a performance per watt analysis of CUDAlign 4.0, a parallel strategy to obtain the optimal alignment of huge DNA se- quences in multi-GPU platforms using the exact Smith-Waterman method. Speed-up factors and ... -
Solución de múltiples sistemas lineales en GPUs
Molero, Jose Manuel; Plaza, Antonio; Martín-Garzón, Esther; García-Fernández, Inmaculada; Quintana-Ortí, Enrique S. (2013-11-05)
Este trabajo se centra en el calculo, de forma concurrente, de múltiples sistemas lineales definidos por matrices densas de una dimensión media. Se considera una solución basada en la factorización de Cholesky y su ... -
Solving Large-Scale Markov Decision Processes on Low-Power Heterogeneous Platforms
Constantinescu, Denisa-Andreea; González-Navarro, María Ángeles; Corbera-Peña, Francisco Javier; Fernández-Madrigal, Juan Antonio; Asenjo-Plaza, Rafael (2019-07-11)
Markov Decision Processes (MDPs) provide a framework for a machine to act autonomously and intelligently in environments where the effects of its actions are not deterministic. MDPs have numerous applications. We focus ... -
Soporte de Orden y Reducciones en Sistemas de Memoria Transaccional
Pedrero-Luque, Manuel (UMA Editorial, 2018-11-12)
En esta tesis se proponen soluciones basadas en memoria transaccional (TM) para optimizar la detección y resolución de conflictos en códigos que presentan operaciones de reducción. Las reducciones aparecen frecuentemente ... -
Speculative Barriers with Transactional Memory
Pedrero-Luque, Manuel; Quislant-del-Barrio, Ricardo; Gutiérrez-Carrasco, Eladio Damián; López-Zapata, Emilio; Plata-González, Óscar Guillermo (IEEE, 2020-12-14)
Transactional Memory (TM) is a synchronization model for parallel programming which provides optimistic concurrency control. Transactions can run in parallel and are only serialized in case of conflict. In this work we use ... -
System-Level Design of Energy-Proportional Many-Core Servers for Exascale Computing
(2017-10-13)Continuous advances in manufacturing technologies are enabling the development of more powerful and compact high-performance computing (HPC) servers made of many-core processing architectures. However, this soaring demand ... -
Tasks Fairness Scheduler for GPU
López Albelda, Bernabé; González-Linares, José María; Guil-Mata, Nicolás (2019-09-24)
Nowadays GPU clusters are available in almost every data processing center. Their GPUs are typically shared by different applications that might have different processing needs and/or different levels of priority. As current ...