Now showing items 1-20 of 125

    • A 2D algorithm with asymmetric workload for the UPC conjugate gradient method 

      González-Domínguez, Jorge; Marques, Osni A.; Martín Santamaría, María José; Touriño, Juan (Springer New York LLC, 2014)
      [Abstract] This paper examines four different strategies, each one with its own data distribution, for implementing the parallel conjugate gradient (CG) method and how they impact communication and overall performance. ...
    • A cloud-based enhanced differential evolution algorithm for parameter estimation problems in computational systems biology 

      Teijeiro, Diego; Pardo, Xoán C.; Penas, David R.; González Gómez, Patricia; Banga, Julio R.; Doallo, Ramón (Springer New York LLC, 2017)
      [Abstract] Metaheuristics are gaining increasing recognition in many research areas, computational systems biology among them. Recent advances in metaheuristics can be helpful in locating the vicinity of the global solution ...
    • A framework for argument-based task synchronization with automatic detection of dependencies 

      González, Carlos H.; Fraguela, Basilio B. (Elsevier, 2013)
      [Abstract] Synchronization in parallel applications can be achieved either implicitly or explicitly. Implicit synchronization is typical of programming environments that provide predefined, and often simple, patterns of ...
    • A general and efficient divide-and-conquer algorithm framework for multi-core clusters 

      González, Carlos H.; Fraguela, Basilio B. (SpringerLink, 2017)
      [Abstract]Divide-and-conquer is one of the most important patterns of parallelism, being applicable to a large variety of problems. In addition, the most powerful parallel systems available nowadays are computer clusters ...
    • A GIS-Embedded System to Support Land Consolidation Plans in Galicia. 

      Touriño, Juan; Parapar López, Jorge; Doallo Biempica, Ramón; Boullón, Marcos; Rivera, Francisco F.; Bruguera, Javier D. (Taylor & Francis, 2003-06)
      [Abstract] Land consolidation is a strategic instrument for rural planning and thus economic development in the Spanish region of Galicia. This paper describes an experimental system embedded in a GIS environment to aid ...
    • A Grid Portal for an Undergraduate Parallel Programming Course 

      Touriño, Juan; Martín Santamaría, María José; Tarrío, Jacobo; Arenaz Silva, Manuel (Institute of Electrical and Electronics Engineers, 2005-08)
      [Abstract] This paper describes an experience of designing and implementing a portal to support transparent remote access to supercomputing facilities to students enrolled in an undergraduate parallel programming course. ...
    • A heuristic approach for the automatic insertion of checkpoints in message-passing codes 

      Rodríguez Álvarez, Gabriel; Martín Santamaría, María José; González, Patricia; Touriño, Juan (Technische Universitaet Graz * Institut fuer Informationssysteme und Computer Medien,Graz University of Technology, Institute for Information Systems and Computer Media, 2009-08)
      [Abstract] Checkpointing tools may be typically implemented at two different abstraction levels: at the system level or at the application level. The latter has become a more popular alternative due to its flexibility and ...
    • A middleware architecture for distributed systems management 

      Salceda, Jesús; Díaz, Iván; Touriño, Juan; Doallo Biempica, Ramón (Academic Press, 2004-06)
      [Abstract] This paper presents a middleware solution for global management of any kind of distributed system, such as networks of PCs/workstations, clusters or server farms. Our approach lies in an object-oriented software ...
    • A multi-GPU shallow-water simulation with transport of contaminants 

      Viñas, Moisés; Lobeiras Blanco, Jacobo; Fraguela, Basilio B.; Arenaz Silva, Manuel; Amor, Margarita; García, J.A.; Castro, M.J.; Doallo Bempica, Ramón (Wiley, 2012)
      [Abstract] This work presents cost-effective multi-graphics processing unit (GPU) parallel implementations of a finite-volume numerical scheme for solving pollutant transport problems in bidimensional domains. The fluid ...
    • A novel compiler support for automatic parallelization on multicore systems 

      Andión, José M.; Arenaz Silva, Manuel; Rodríguez Álvarez, Gabriel; Touriño, Juan (Elsevier, 2013-09)
      [Abstract:] The widespread use of multicore processors is not a consequence of significant advances in parallel programming. In contrast, multicore processors arise due to the complexity of building power-efficient, ...
    • A parallel metaheuristic for large mixed-integer dynamic optimization problems, with applications in computational biology 

      Penas, David R.; Henriques, David; González Gómez, Patricia; Doallo Biempica, Ramón; Saez-Rodriguez, Julio; Banga, Julio R. (Public Library of Science, 2017)
      [Abstract] Background: We consider a general class of global optimization problems dealing with nonlinear dynamic models. Although this class is relevant to many areas of science and engineering, here we are interested ...
    • A Parallel Skeleton for Divide-and-conquer Unbalanced and Deep Problems 

      Álvarez Martínez, Millán; Fraguela, Basilio B.; Cabaleiro, J.C. (Springer Nature, 2021)
      [Abstract] The Divide-and-conquer (D&C) pattern appears in a large number of problems and is highly suitable to exploit parallelism. This has led to much research on its easy and efficient application both in shared and ...
    • A population-based iterated greedy algorithm for the delimitation and zoning of rural settlements 

      Porta, Juan; Parapar López, Jorge; Doallo Biempica, Ramón; Barbosa Brandão, Vasco; Santé, Inés; Crecente, Rafael (Pergamon Press, 2013)
      [Abstract] In this paper we present a Population-Based Iterated Greedy (PBIG) algorithm for delimiting and zoning rural settlements. Each cadastral plots is allocated to a category (traditional–historical, common or none) ...
    • A portable and adaptable fault tolerance solution for heterogeneous applications 

      Losada, Nuria; Fraguela, Basilio B.; González Gómez, Patricia; Martín Santamaría, María José (Academic Press, 2017-06)
      [Abstract] Heterogeneous systems have increased their popularity in recent years due to the high performance and reduced energy consumption capabilities provided by using devices such as GPUs or Xeon Phi accelerators. This ...
    • A portable and adaptable fault tolerance solution for heterogeneous applications 

      Losada, Nuria; Fraguela, Basilio B.; González, Patricia; Martín Santamaría, María J. (Elsevier, 2017)
      [Abstract] Heterogeneous systems have increased their popularity in recent years due to the high performance and reduced energy consumption capabilities provided by using devices such as GPUs or Xeon Phi accelerators. This ...
    • A simulated annealing algorithm for zoning in planning using parallel computing 

      Santé, Inés; Fernández Rivera, Francisco; Crecente, Rafael; Boullón, Marcos; Suárez, Marcos; Porta, Juan; Parapar López, Jorge; Doallo Biempica, Ramón (Pergamon Press, 2016)
      [Abstract] There is an increasing demand for tools that support land use planning processes, particularly the design of zoning maps, which is one of the most complex tasks in the field. In this task, different land use ...
    • Accelerating the HyperLogLog Cardinality Estimation Algorithm 

      Bozkus, Cem; Fraguela, Basilio B. (Hindawi, 2017)
      [Abstract] In recent years, vast amounts of data of different kinds, from pictures and videos from our cameras to software logs from sensor networks and Internet routers operating day and night, are being generated. This ...
    • Affine Modeling of Program Traces 

      Rodríguez Álvarez, Gabriel; Kandemir, Mahmut T.; Touriño, Juan (Institute of Electrical and Electronics Engineers, 2019-02-01)
      [Abstract] A formal, high-level representation of programs is typically needed for static and dynamic analyses performed by compilers. However, the source code of target applications is not always available in an analyzable ...
    • An Application of Fish Detection Based on Eye Search with Artificial Vision and Artificial Neural Networks 

      Rico-Díaz, Ángel-José; Rabuñal, Juan R.; Gestal, M.; Mures, Omar A.; Puertas, Jerónimo (MDPI AG, 2020-10-27)
      [Abstract] A fish can be detected by means of artificial vision techniques, without human intervention or handling the fish. This work presents an application for detecting moving fish in water by artificial vision based ...
    • Analysis and evaluation of MapReduce solutions on an HPC cluster 

      Veiga, Jorge; Expósito, Roberto R.; López Taboada, Guillermo; Touriño, Juan (Pergamon Press, 2016-02)
      [Abstract] The ever growing needs of Big Data applications are demanding challenging capabilities which cannot be handled easily by traditional systems, and thus more and more organizations are adopting High Performance ...