Now showing items 1-20 of 93

    • 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 Biempica, 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 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 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 population-based iterated greedy algorithm for the delimitation and zoning of rural settlements 

      Porta Trinidad, 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 simulated annealing algorithm for zoning in planning using parallel computing 

      Santé, Inés; Fernández Rivera, Francisco; Crecente, Rafael; Boullón, Marcos; Suárez, Marcos; Porta Trinidad, 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 ...
    • 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 ...
    • 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 ...
    • Analysis of I/O Performance on an Amazon EC2 Cluster Compute and High I/O Platform 

      Expósito, Roberto R.; López Taboada, Guillermo; Ramos Garea, Sabela; González-Domínguez, Jorge; Touriño, Juan; Doallo Biempica, Ramón (Springer Netherlands, 2013-12)
      [Abstract] Cloud computing is currently being explored by the scientific community to assess its suitability for High Performance Computing (HPC) environments. In this novel paradigm, compute and storage resources, as well ...
    • Analysis of Performance-impacting Factors on Checkpointing Frameworks: The CPPC Case Study 

      Rodríguez Álvarez, Gabriel; Martín Santamaría, María José; Touriño, Juan; González, Patricia (Oxford University Press, 2011-11-01)
      [Abstract] This paper focuses on the performance evaluation of Compiler for Portable Checkpointing (CPPC), a tool for the checkpointing of parallel message-passing applications. Its performance and the factors that impact ...
    • Assessing resilient versus stop-and-restart fault-tolerant solutions in MPI applications 

      Losada, Nuria; Martín Santamaría, María José; González Gómez, Patricia (Springer New York LLC, 2017-01)
      [Abstract] The Message Passing Interface (MPI) standard is the most popular parallel programming model for distributed systems. However, it lacks fault-tolerance support and, traditionally, failures are addressed with ...
    • Assessment, Design and Implementation of a Private Cloud for MapReduce Applications 

      Salgueiro, M.; González Gómez, Patricia; Fernández Pena, Tomás; Cabaleiro, J.C. (Stowarzyszenie Komputerowej Nauki o Materialach i Inzynierii Powierzchni,Association of Computational Materials Science and Surface Engineering, 2014)
      [Abstract] Scientific computation and data intensive analyses are ever more frequent. On the one hand, the MapReduce programming model has gained a lot of attention for its applicability in large parallel data analyses and ...
    • Automated and accurate cache behavior analysis for codes with irregular access patterns 

      Andrade, Diego; Arenaz Silva, Manuel; Fraguela, Basilio B.; Touriño, Juan; Doallo Biempica, Ramón (John Wiley & Sons Ltd., 2007-04-03)
      [Abstract] The memory hierarchy plays an essential role in the performance of current computers, so good analysis tools that help in predicting and understanding its behavior are required. Analytical modeling is the ideal ...
    • Automatic mapping of parallel applications on multicore architectures using the Servet benchmark suite 

      González Domínguez, Jorge; López Taboada, Guillermo; Fraguela, Basilio B.; Martín Santamaría, María José; Touriño, Juan (Pergamon Press, 2012-03)
      [Abstract] Servet is a suite of benchmarks focused on detecting a set of parameters with high influence on the overall performance of multicore systems. These parameters can be used for autotuning codes to increase their ...
    • BDEv 3.0: energy efficiency and microarchitectural characterization of Big Data processing frameworks 

      Veiga, Jorge; Enes, Jonatan; Expósito, Roberto R.; Touriño, Juan (Elsevier BV * North-Holland, 2018-09)
      [Abstract] As the size of Big Data workloads keeps increasing, the evaluation of distributed frameworks becomes a crucial task in order to identify potential performance bottlenecks that may delay the processing of large ...