Now showing items 1-12 of 4974

  • Performance Evaluation of cuDNN Convolution Algorithms on NVIDIA Volta GPUs 

    Jordà, Marc; Valero-Lara, Pedro; Peña, Antonio J. (IEEE, 2019-05-24)
    Article
    Open Access
    Convolutional neural networks (CNNs) have recently attracted considerable attention due to their outstanding accuracy in applications, such as image recognition and natural language processing. While one advantage of the ...
  • How to use mixed precision in ocean models: exploring a potential reduction of numerical precision in NEMO 4.0 and ROMS 3.6 

    Tintó-Prims, Oriol; Acosta, Mario C.; Moore, Andrew M.; Castrillo, Miguel; Serradell, Kim; Cortés, Ana; Doblas-Reyes, Francisco J. (European Geosciences Union (EGU), 2019-07-24)
    Article
    Open Access
    Mixed-precision approaches can provide substantial speed-ups for both computing- and memory-bound codes with little effort. Most scientific codes have overengineered the numerical precision, leading to a situation in which ...
  • Big Data Analytics for Smart Cities: The H2020 CLASS Project 

    Quiñones, Eduardo; Bertogna, Marko; Hadad, Erez; Ferrer, Ana J.; Chiantore, Luca; Reboa, Alfredo (ACM, 2018-06-04)
    Conference lecture
    Open Access
    Applying big-data technologies to field applications has resulted in several new needs. First, processing data across a compute continuum spanning from cloud to edge to devices, with varying capacity, architecture etc. ...
  • Tunable and free-form planar optics 

    Berto, Pascal; Philippet, Laurent; Ossmond, Johann; Liu, Chang François; Afridi, Adeel; Montagut Marques, Marc; Molero Agudo, Bernat; Tessier, Gilles; Quidant, Romain (Nature, 2019-07-22)
    Article
    Restricted access - publisher's policy
    The advent of spatial control over the phase and amplitude of light waves has profoundly transformed photonics, enabling major advances in fields from imaging and information technology to biomedical optics. Here we propose ...
  • Collaborative informed gateway selection in large-scale and heterogeneous 

    Batbayar, Khulan; Dimogerontakis, Emmanouil; Meseguer Pallarès, Roc; Navarro Moldes, Leandro; Sadre, Ramin (Institute of Electrical and Electronics Engineers (IEEE), 2019)
    Conference report
    Restricted access - publisher's policy
    In wireless community access networks, clients tend to reach the Internet through multiple gateway nodes instead of a single default gateway. The mapping of gateways to clients should take into account the perception of ...
  • Social and physical analysis of vulnerable buildings in the historic centre in relation to the vulnerable urban fabric in the city of Barcelona 

    Vima Grau, Sara; Cornadó Bardón, Còssima; Garcia-Almirall, M. Pilar (Green Lines Institute for Sustainable Development, 2019)
    Conference report
    Restricted access - publisher's policy
    In a context of regression after the financial crisis of 2008, socio residential vulnerability is one of the rising challenges for historic centres when addressing the interaction between vulnerable resident population and ...
  • Time series analysis to predict end-to-end quality of wireless community networks 

    Millán Marco, Pere; Aliagas Castell, Carles; Molina Clemente, Carlos Maria; Dimogerontakis, Emmanouil; Meseguer Pallarès, Roc (2019-05-01)
    Article
    Open Access
    Community Networks have been around us for decades being initially deployed in the USA and Europe. They were designed by individuals to provide open and free “do it yourself” Internet access to other individuals in the ...
  • Finite difference methods fengshui: alignment through a mathematics of arrays 

    Chetioui, Benjamin; Mullin, Lenore; Abusdal, Ole; Haveraaen, Magne; Järvi, Jaakko; Macià, Sandra (ACM, 2019-06-22)
    Conference lecture
    Open Access
    Numerous scientific-computational domains make use of array data. The core computing of the numerical methods and the algorithms involved is related to multi-dimensional array manipulation. Memory layout and the access ...
  • Knotting fractional-order knots with the polarization state of light 

    Pisanty, Emilio; Machado, Gerard J.; Vicuña-Hernández, Verónica; Picón, Antonio; Celi, Alessio; Pérez Torres, Juan; Lewenstein, Maciej (Nature, 2019-06-10)
    Article
    Restricted access - publisher's policy
    The fundamental polarization singularities of monochromatic light are normally associated with invariance under coordinated rotations: symmetry operations that rotate the spatial dependence of an electromagnetic field by ...
  • Probabilistic Worst-Case Timing Analysis: Taxonomy and Comprehensive Survey 

    Cazorla, Francisco J.; Kosmidis, Leonidas; Mezzetti, Enrico; Hernandez, Carles; Abella, Jaume; Vardanega, Tullio (ACM, 2019-02-01)
    Article
    Open Access
    The unabated increase in the complexity of the hardware and software components of modern embedded real-time systems has given momentum to a host of research in the use of probabilistic and statistical techniques for timing ...
  • Diurnal cycle RANS simulations applied to wind resource assessment 

    Barcons, Jordi; Avila, Matias; Folch, Arnau (Wiley, 2019-02)
    Article
    Open Access
    Microscale computational fluid dynamics (CFD) models can be used for wind resource assessment on complex terrains. These models generally assume neutral atmospheric stratification, an assumption that can lead to inaccurate ...
  • LEGaTO: first steps towards energy-efficient toolset for heterogeneous computing 

    Cristal, Adrian; Unsal, Osman S.; Martorell, Xavier; Carpenter, Paul; de la Cruz, Raul; Bautista, Leonardo; Jimenez, Daniel; Alvarez, Carlos; Salami, Behzad; Madonar, Sergi; Pericàs, Miquel; Trancoso, Pedro; vor dem Berge, Micha; Billung-Meyer, Gunnar; Krupop, Stefan; Christmann, Wolfgang; Klawonn, Frank; Mihklafi, Amani; Becker, Tobias; Gaydadjiev, Georgi; Salomonsson, Hans; Dubhashi, Devdatt; Port, Oron; Hadar, Elad; Etsion, Yoav; Fetzer, Christof; Hagemeyer, Jens; Jungeblut, Thorsten; Kucza, Nils; Kaiser, Martin; Porrmann, Mario; Pasin, Marcelo; Schiavoni, Valerio; Rocha, Isabelly; Göttel, Christian; Felber, Pascal (ACM, 2018-07-15)
    Conference lecture
    Open Access
    LEGaTO is a three-year EU H2020 project which started in December 2017. The LEGaTO project will leverage task-based programming models to provide a software ecosystem for Made-in-Europe heterogeneous hardware composed of ...