Listar GI-GAC - Congresos, conferencias, etc. por autor "Touriño, Juan"

Mostrando ítems 21-35 de 35

    • Ontological Con guration Management for Wireless Mesh Routers 

      Díaz, Iván; Popi, Cristian; Festor, Olivier; Touriño, Juan; Doallo, Ramón (Springer, 2009)
      [Abstract] Wireless mesh networks (WMNs) are a category of wireless networks that are self-organized, robust and which offer more flexible client coverage with less equipment requirements than wired networks. In WMNs, mesh ...

    • Parallel Sparse Modified Gram-Schmidt QR Decomposition 

      Doallo, Ramón; Fraguela, Basilio B.; Touriño, Juan; Zapata, Emilio L. (Springer, 1996)
      [Abstract] We present a parallel computational method for the QR decomposition with column pivoting of a sparse matrix by means of Modified Gram-Schmidt orthogonalization. Nonzero elements of the matrix M to be decomposed ...

    • Performance analysis of Java message-passing libraries on fast Ethernet, Myrinet and SCI clusters 

      López Taboada, Guillermo; Touriño, Juan; Doallo, Ramón (IEEE Computer Society, 2004-01-08)
      [Abstract] The use of Java for parallel programming on clusters according to the message-passing paradigm is an attractive choice. In this case, the overall application performance will largely depend on the performance ...

    • Performance Evaluation of Big Data Frameworks for Large-Scale Data Analytics 

      Veiga, Jorge; Expósito, Roberto R.; Pardo, Xoán C.; López Taboada, Guillermo; Touriño, Juan (IEEE Computer Society, 2017-02-06)
      [Abstract] The increasing adoption of Big Data analytics has led to a high demand for efficient technologies in order to manage and process large datasets. Popular MapReduce frameworks such as Hadoop are being replaced by ...

    • Performance Evaluation of MPI, UPC and OpenMP on Multicore Architectures 

      Mallón, Damián A.; López Taboada, Guillermo; Teijeiro Barjas, Carlos; Touriño, Juan; Fraguela, Basilio B.; Gómez, Andrés; Doallo, Ramón; Mouriño, José C. (Springer, 2009)
      [Abstract] The current trend to multicore architectures underscores the need of parallelism. While new languages and alternatives for supporting more efficiently these systems are proposed, MPI faces this new challenge. ...

    • Performance Evaluation of Unified Parallel C Collective Communications 

      López Taboada, Guillermo; Teijeiro Barjas, Carlos; Touriño, Juan; Fraguela, Basilio B.; Doallo, Ramón; Mouriño, José C.; Mallón, Damián A.; Gómez, Andrés (IEEE Computer Society, 2009-07-17)
      [Abstract] Unified Parallel C (UPC) is an extension of ANSI C designed for parallel programming. UPC collective primitives, which are part of the UPC standard, increase programming productivity while reducing the communication ...

    • Performance Optimization of a Parallel Error Correction Tool 

      Martínez-Sánchez, Marco; Expósito, Roberto R.; Touriño, Juan (MDPI, 2021)
      [Abstract] Due to the continuous development in the field of Next Generation Sequencing (NGS) technologies that have allowed researchers to take advantage of greater genetic samples in less time, it is a matter of relevance ...

    • Power Budgeting of Big Data Applications in Container-based Clusters 

      Enes, Jonatan; Fieni, Guillaume; Expósito, Roberto R.; Rouvoy, Romain; Touriño, Juan (Institute of Electrical and Electronics Engineers, 2020-11-02)
      [Abstract] Energy consumption is currently highly regarded on computing systems for many reasons, such as improving the environmental impact and reducing operational costs considering the rising price of energy. Previous ...

    • Program Behavior Characterization Through Advanced Kernel Recognition 

      Arenaz Silva, Manuel; Touriño, Juan; Doallo, Ramón (Springer, 2007)
      [Abstract] Understanding program behavior is at the foundation of program optimization. Techniques for automatic recognition of program constructs (from now on, computational kernels) characterize the behavior of program ...

    • RGen: Data Generator for Benchmarking Big Data Workloads 

      Pérez-Jove, Rubén; Expósito, Roberto R.; Touriño, Juan (MDPI, 2021)
      [Abstract] This paper presents RGen, a parallel data generator for benchmarking Big Data workloads, which integrates existing features and new functionalities in a standalone tool. The main functionalities developed in ...

    • Servet: A Benchmark Suite for Autotuning on Multicore Clusters 

      González-Domínguez, Jorge; López Taboada, Guillermo; Fraguela, Basilio B.; Martín, María J.; Touriño, Juan (Institute of Electrical and Electronics Engineers, 2010-05-24)
      [Abstract] MapReduce is a powerful tool for processing large data sets used by many applications running in distributed environments. However, despite the increasing number of computationally intensive problems that require ...

    • Sparse Givens QR Factorization on a Multiprocessor 

      Touriño, Juan; Doallo, Ramón; Zapata, E.L. (IEEE Computer Society, 1996-06-01)
      [Abstract] We present a parallel algorithm for the QR factorization with column pivoting of a sparse matrix by means of Givens rotations. Nonzero elements of the matrix M to be decomposed are stored in a one dimensional ...

    • Sparse Householder QR factorization on a mesh 

      Doallo, Ramón; Touriño, Juan; Zapata, Emilio L. (IEEE Computer Society, 1996-01)
      [Abstract] We analyze the parallelization of QR factorization by means of Householder transformations. This parallelization is carried out on a machine with a mesh topology (a 2-D torus to be more precise). We use a cyclic ...

    • The HPS3 Service: Reduction of Cost and Transfer Time for Storing Data on Clouds 

      Veiga, Jorge; López Taboada, Guillermo; Pardo, Xoán C.; Touriño, Juan (IEEE Computer Society, 2015-03-12)
      [Abstract] In the past several years, organizations have been changing their storage methods as the volume of data they managed has increased. The cloud computing paradigm offers new ways of storing data based on scalability ...

    • Towards Low-Latency Model-Oriented Distributed Systems Management 

      Díaz, Iván; Touriño, Juan; Doallo, Ramón (Springer, 2007)
      [Abstract] Windows and Unix systems have been traditionally very different with regard to configuration storage and management. In this paper we have adapted our CIM-based model-driven management framework, AdCIM, to ...