Listar ICC_Articles por título

Mostrando ítems 38-57 de 413

    • closedAccess   A reconfigurable platform for evaluating the performance of QoS networks 

      Claver, José M.; Agustí Ballester, Pau; Arevalillo Herráez, M.; León Navarro, Germán; Canseco, Manel Elsevier (2010)
      Nowadays, high performance System and Local Area Networks (SAN/LAN) have to serve heterogeneous traffic consisting of information flows with different bandwidth and latency requirements. This makes it necessary to provide ...

    • closedAccess   A Runtime System for Programming Out-of-Core Matrix Algorithms-by-Tiles on Multithreaded Architectures 

      Quintana-Ortí, Gregorio; Igual, Francisco D.; Marqués-Andrés, Mercedes; Quintana-Orti, Enrique S.; Van de Geijn, Robert A. ACM (2012-08)
      Out-of-core implementations of algorithms for dense matrix computations have traditionally focused on optimal use of memory so as to minimize I/O, often trading programmability for performance. In this article we show how ...

    • openAccess   A semantic approach for the requirement-driven discovery of web resources in the Life Sciences 

      Pérez Catalán, María; Berlanga Llavori, Rafael; Sanz, Ismael; Aramburu Cabo, María José Springer-Verlag (2013-03)
      Research in the Life Sciences depends on the integration of large, dis- tributed and heterogeneous web resources (e.g. data sources and web services). The discovery of which of these resources are the most appropriate ...

    • closedAccess   A similarity study of I/O traces via string kernels 

      Torres, Raul; Kunkel, Julian; Dolz, Manuel F.; Ludwig, Thomas Springer (2018-07)
      Understanding I/O for data-intense applications is the foundation for the optimization of these applications. The classification of the applications according to the expressed I/O access pattern eases the analysis. An ...

    • openAccess   A simulator to assess energy saving strategies and policies in HPC workloads 

      Quintana-Orti, Enrique S.; Mayo, Rafael; Iserte, Sergio; Fernández Fernández, Juan Carlos; Dolz, Manuel F. Association for Computing Machinery (ACM) (2012-07)
      In recent years power consumption of high performance computing (HPC) clusters has become a growing problem due, e.g., to the economic cost of electricity, the emission of car- bon dioxide (with negative impact on the ...

    • closedAccess   A Smart Peri-Urban I2V Architecture for Dynamic Rerouting 

      García Fernández, Luis Amable; Tomás López, Vicente Ramón IEEE (2018-04)
      Traffic congestion increases CO2 emissions, fuel consumption and travel times. These increases are related to the evolution of the growth in urban areas. Urban areas are being transforming into smart cities, that is, they ...

    • openAccess   A Study on How Food Colour May Determine the Categorization of a Dish: Predicting Meal Appeal from Colour Combinations 

      Casales-Garcia, Vicente; Falomir, Zoe; Museros, Lledó; Sanz, Ismael; Gonzalez Abril, Luis World Scientific Publishing (2022-12)
      A person’s preference to select or reject certain meals is influenced by several aspects, including colour. In this paper, we study the relevance of food colour for such preferences. To this end, a set of images of meals ...

    • openAccess   A study on the performance of distributed training of data-driven CFD simulations 

      Iserte, Sergio; González-Barberá, Alejandro; Barreda-Juan, Paloma; Rojek, Krzysztof Sage (2023-05-04)
      Data-driven methods for computer simulations are blooming in many scientific areas. The traditional approach to simulating physical behaviors relies on solving partial differential equations (PDEs). Since calculating these ...

    • openAccess   A Survey on Malleability Solutions for High-Performance Distributed Computing 

      Aliaga Estellés, José Ignacio; Castillo, Maribel; Iserte, Sergio; Martín Álvarez, Iker; Mayo, Rafael MDPI (2022-05-22)
      Maintaining a high rate of productivity, in terms of completed jobs per unit of time, in High-Performance Computing (HPC) facilities is a cornerstone in the next generation of exascale supercomputers. Process malleability ...

    • openAccess   Accelerating multi-channel filtering of audio signal on ARM processors 

      BELLOCH, JOSE A.; Alventosa, Juan J.; Alonso-Jordá, Pedro; Quintana-Orti, Enrique S.; Vidal, Antonio M. Springer Verlag (2016-03)

    • closedAccess   Accelerating the Lyapack library using GPUs 

      Dufrechou, Ernesto; Ezzatti, Pablo; Quintana-Orti, Enrique S.; Remón Gómez, Alfredo Springer (2013)
      Lyapack is a package for the solution of large-scale sparse problems arising in control theory. The package has a modular design, and is implemented as a Matlab toolbox, which renders it easy to utilize, modify and extend ...

    • openAccess   Accelerating the SRP-PHAT algorithm on multi- and many-core platforms using OpenCL 

      Badía, José; BELLOCH, JOSE A.; Cobos, Maximo; Igual, Francisco D.; Quintana-Orti, Enrique S. Springer (2019-03)
      The Steered Response Power with Phase Transform (SRP-PHAT) algorithm is a well-known method for sound source localization due to its robust performance in noisy and reverberant environments. This algorithm is used in a ...

    • closedAccess   Accelerating the task/data-parallel version of ILUPACK’s BiCG in multi-CPU/GPU configurations 

      Aliaga Estellés, José Ignacio; Dufrechou, Ernesto; Ezzatti, Pablo; Quintana-Orti, Enrique S. Elsevier (2019)
      ILUPACK is a valuable tool for the solution of sparse linear systems via iterative Krylov subspace-based methods. Its relevance for the solution of real problems has motivated several efforts to enhance its performance on ...

    • closedAccess   Acceleration of PageRank with Customized Precision Based on Mantissa Segmentation 

      Grützmacher, Thomas; Cojean, Terry; Flegar, Goran; Anzt, Hartwig; Quintana-Orti, Enrique S. Association for Computing Machinery (ACM) (2020-03)
      We describe the application of a communication-reduction technique for the PageRank algorithm that dynamically adapts the precision of the data access to the numerical requirements of the algorithm as the iteration converges. ...

    • closedAccess   Acceleration of short and long DNA read mapping without loss of accuracy using suffix array 

      Tárraga, Joaquín; Arnau, Vicente; Martínez Pérez, Héctor; Moreno, Raul; Cazorla, Diego; Salavert Torres, José; Blanquer Espert, Ignacio; Dopazo, Joaquín; Medina, Ignacio Oxford University Press (2014-08)
      HPG Aligner applies suffix arrays for DNA read mapping. This implementation produces a highly sensitive and extremely fast mapping of DNA reads that scales up almost linearly with read length. The approach presented here ...

    • openAccess   Accessing very high dimensional spaces in parallel 

      Badía, José; Artigas Fuentes, Fernando Springer (2016-02-17)
      Access methods are a fundamental tool on Information Retrieval. However, most of these methods suffer the problem known as the curse of dimensionality when they are applied to objects with very high dimensionality ...

    • openAccess   Adapting concurrency throttling and voltage–frequency scaling for dense eigensolvers 

      Aliaga Estellés, José Ignacio; Barreda Vayá, Maria; Castaño Álvarez, María Asunción; Dolz, Manuel F.; Quintana-Orti, Enrique S. Springer Verlag (2015)
      We analyze power dissipation and energy consumption during the execution of high-performance dense linear algebra kernels on multi-core processors. On top of this analysis, we propose and evaluate several strategies to ...

    • openAccess   Adapting hierarchical bidirectional inter prediction on a GPU-based platform for 2D and 3D H.264 video coding 

      Rodríguez Sánchez, Rafael; Martínez, José Luis; De Cock, Jan; Fernández Escribano, Gerardo; Pieters, Bart; Sánchez, José L.; Claver, José M.; Van de Walle, Rik SpringerOpen (2013)
      The H.264/AVC video coding standard introduces some improved tools in order to increase compression efficiency. Moreover, the multi-view extension of H.264/AVC, called H.264/MVC, adopts many of them. Among the new features, ...

    • closedAccess   Adaptive Precision Block-Jacobi for High Performance Preconditioning in the Ginkgo Linear Algebra Software 

      Flegar, Goran; Anzt, Hartwig; Cojean, Terry; Quintana-Orti, Enrique S. Association for Computing Machinery (ACM) (2021-04)
      The use of mixed precision in numerical algorithms is a promising strategy for accelerating scientific applications. In particular, the adoption of specialized hardware and data formats for low-precision arithmetic in ...

    • openAccess   Adaptive precision in block‐Jacobi preconditioning for iterative sparse linear system solvers 

      Anzt, Hartwig; Dongarra, Jack; Flegar, Goran; Higham, Nicholas J.; Quintana-Orti, Enrique S. Wiley (2019-03-25)
      We propose an adaptive scheme to reduce communication overhead caused by data movement by selectively storing the diagonal blocks of a block‐Jacobi preconditioner in different precision formats (half, single, or double). ...