Listar por autor "López-Zapata, Emilio"

Espinosa García, Elena María; Bautista-Moreno, Rocío

(Sociedad de Arquitectura y Tecnología de Computadores (SARTECO), 2019)

La Memoria Transaccional (TM) es una alternativa al modelo de programación basado en locks que pretende simplificar la programación paralela. TM sustituye locks por transacciones para resolver el problema de la exclusión ...

Comparing assembly strategies for third-generation sequencing technologies across different genomes

; Fernández, Iván; Larrosa-Jiménez, Rafael

; Hormigo-Aguilar, Javier

[et al.] (Elsevier, 2023-09)

The recent advent of long-read sequencing technologies, such as Pacific Biosciences (PacBio) and Oxford Nanopore technology (ONT), has led to substantial accuracy and computational cost improvements. However, de novo ...

Efficient Floating-Point Representation for Balanced Codes for FPGA Devices

Villalba-Moreno, Julio

; Corbera-Peña, Francisco Javier

; González, Mario; López-Zapata, Emilio

(2013-10-30)

We propose a floating–point representation to deal efficiently with arithmetic operations in codes with a balanced number of additions and multiplications for FPGA devices. The variable shift operation is very slow in ...

Enhancing Scalability In Best-Effort Hardware Transactional Memory Systems

(Elsevier, 2017)

Current industry proposals for hardware transactional memory focus on best-effort solutions where hardware limits are imposed on transactions. These designs can efficiently execute transactions but they may abort due to ...

Factorización LU de matrices dispersas en multiprocesadores

Asenjo-Plaza, Rafael

(Universidad de Málaga, Servicio de Publicaciones, 1997)

Hardware Signature Designs to Deal With Asymmetry in Transactional Data Sets

(IEEE, 2013)

Transactional Memory (TM) systems must track memory accesses made by concurrent transactions in order to detect conflicts. Many TM implementations use signatures for this purpose, which summarize reads and writes in ...

Improving Hardware Transactional Memory Parallelization of Computational Geometry Algorithms Using Privatizing Transactions.

(Elsevier, 2019-05-06)

Hardware transactional memory is a new parallel programming paradigm supported by current commercial multiprocessors. This paradigm provides optimistic concurrency and overcomes some of the problems associated with classical ...

Improving Signature Behavior by Irrevocability in Transactional Memory Systems

(IEEE Computer Society, 2014)

Signatures have been proposed in Hardware Transactional Memory (HTM) to represent read and write sets of transactions and decouple transaction conflict detection from private caches. Generally, signatures are implemented ...

Improving Signatures by Locality Exploitation for Transactional Memory

(IEEE, 2009)

Writing multithreaded programs is a fairly complex task that poses a major obstacle to exploit multicore processors. Transactional Memory (TM) emerges as an alternative to the conventional multithreaded programming to ...

Interval Filter: A Locality-Aware Alternative to Bloom Filters for Hardware Membership Queries by Interval Classification.

(Springer, 2010)

Bloom filters are data structures that can efficiently represent a set of elements providing operations of insertion and membership testing. Nevertheless, these filters may yield false positive results when testing for ...

Lazy Irrevocability for Best-Effort Transactional Memory Systems

(IEEE, 2017)

IBM and Intel now offer commercial systems with Transactional Memory (TM), a programming paradigm whose aim is to facilitate concurrent programming while maximizing parallelism. These TM systems are implemented in hardware ...

Leveraging Irrevocability to Deal with Signature Saturation in Hardware Transactional Memory

(Springer, 2017)

In hardware transactional memory, signatures have been proposed to keep track of memory locations accessed in a transaction to help conflict detection. Generally, signatures are implemented as Bloom filters that suffer ...

LS-SIG: Locality-Sensitive Signatures for Transactional Memory

(IEEE, 2013)

Multiset Signatures for Transactional Memory

(ACM, 2011)

Transactional Memory (TM) systems must record the memory locations read and written (read and write sets) by concurrent transactions in order to detect conflicts. Some TM implementations use signatures for this purpose, ...

Performance Analysis of the Multi-pass Transformation for Complex 3D-Stencils on GPUs

López-Zapata, Emilio

; Romero, Luis F.; Tabik, Siham (2013-09-25)

Performance Analysis of the Multi-pass Transformation for Complex 3D-Stencils on GPUs

Privatizing Transactions for Lee's Algorithm in Commercial Hardware Transactional Memory

; Quislant-del-Barrio, Ricardo

(Springer, 2018)

Lee’s algorithm solves the path-connection problems that arise in logical drawing, wiring diagramming or optimal route finding. Its parallel version has been widely used as a benchmark to test transactional memory systems. ...

Speculative Barriers with Transactional Memory

Pedrero-Luque, Manuel

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 ...

Tecnologías para el archivo de información digital a largo plazo

; Larrosa Jiménez, Antonio; Segura Plaza, Pedro (UMA/SEDOC, 2011-04-06)

Las tecnologías digitales ha aumentado enormemente nuestra capacidad para almacenar cantidades ingentes de información. Hoy se guarda cualquier tipo de información en algún dispositivo digital. Pero esta capacidad de ...

Unified Locality-Sensitive Signatures for Transactional Memory