Now showing items 1-20 of 113

    • 5G framework for automated network adaptation in mission critical services 

      Jimeno, Elisa; Pérez Romero, Jordi; Vilà Muñoz, Irene; Blanco Jauregi, Begoña; Sanchoyerto, Aitor; Fernández, Javier (Institute of Electrical and Electronics Engineers (IEEE), 2018)
      Conference report
      Open Access
      Mission Critical Services (MCS) are gaining interest among network operators to offer alternative communications than conventional trunked radio systems. They promise a simplified management of cloud and radio resources ...
    • A branch and bound approach for the capacitated plant location problem using cuts from the partial convex hull 

      Barceló Bugeda, Jaime (1984)
      Research report
      Open Access
      The efficient solution of capacitated plant location problems usually requires the development of specific software mainly when the problems are pure integer ones, standard mathematical programming codes being highly ...
    • A cost-effective clustered architecture 

      Canal Corretger, Ramon; Parcerisa Bundó, Joan Manuel; González Colás, Antonio María (Institute of Electrical and Electronics Engineers (IEEE), 1999)
      Conference report
      Open Access
      In current superscalar processors, all floating-point resources are idle during the execution of integer programs. As previous works show, this problem can be alleviated if the floating-point cluster is extended to execute ...
    • A distributed auctioneer for resource allocation in decentralized systems 

      Khan, Muhammad Amin; Vilaça, Xavier; Rodrigues, Luís; Freitag, Fèlix (Institute of Electrical and Electronics Engineers (IEEE), 2016)
      Conference report
      Open Access
      In decentralized systems, nodes often need to coordinate to access shared resources in a fair manner. One approach to perform such arbitration is to rely on auction mechanisms. Although there is an extensive literature ...
    • A dynamic scheduler for balancing HPC applications 

      Boneti, Carlos; Gioiosa, Roberto; Cazorla, Francisco; Valero Cortés, Mateo (Institute of Electrical and Electronics Engineers (IEEE), 2008)
      Conference report
      Open Access
      Load imbalance cause significant performance degradation in High Performance Computing applications. In our previous work we showed that load imbalance can be alleviated by modern MT processors that provide mechanisms for ...
    • A hyper-heuristic for adaptive scheduling in computational grids 

      Xhafa Xhafa, Fatos (2007-01)
      Article
      Open Access
      In this paper we present the design and implementation of an hyper-heuristic for efficiently scheduling independent jobs in computational grids. An efficient scheduling of jobs to grid resources depends on many parameters, ...
    • A library implementation of the nano-threads programming model 

      Martorell Bofill, Xavier; Labarta Mancho, Jesús José; Navarro, Nacho; Ayguadé Parra, Eduard (Springer, 1996)
      Conference report
      Open Access
      In this paper we describe the design and implementation of a user-level thread package based on the nano-threads programming model, whose goal is to efficiently manage the application parallelism at user-level. Nano-thread ...
    • A New CAC Policy Based on Traffic Characterization in Cellular Networks 

      Vassileva Vesselinova, Natalia; Barceló Arroyo, Francisco (Springer, 2008-05)
      Conference report
      Open Access
      The Call Admission Control (CAC) method presented in this paper is based on the statistical properties of the network’s traffic variables. It probabilistically estimates the time until the release of a seized channel: the ...
    • A user-centric mobility management scheme for high-density fog computing deployments 

      Rejiba, Zeineb; Masip Bruin, Xavier; Marín Tordera, Eva (2019)
      Conference report
      Open Access
      The inherent mobility characterizing users in fog computing environments along with the limited wireless range of their serving fog nodes (FNs) drives the need for designing efficient mobility management (MM) mechanisms. ...
    • Active yellow pages: a pipelined resource management architecture for wide-area network computing 

      Royo Vallés, María Dolores; Díaz de Cerio Ripalda, Luis Manuel; Kapadia, Nirav H.; Fortes, José Antonio Bautista (IEEE, 2001-07-08)
      Conference report
      Open Access
      This paper describes a novel, pipelined resource management architecture for computational grids. The design is based on two key realizations. One is that resource management involves a sequence of tasks that is best ...
    • Adaptive power shifting for power-constrained heterogeneous systems 

      Ortega Carrasco, Cristobal; Alvarez Martí, Lluc; Buyuktosunoglu, Alper; Bertran Monfort, Ramon; Rosedahl, Todd Jon; Bose, Pradip; Moreto Planas, Miquel (Institute of Electrical and Electronics Engineers (IEEE), 2022-05-12)
      Article
      Open Access
      The number and heterogeneity of compute devices, even within a single compute node, has been steadily on the rise. Since all systems must operate under a power cap, the number of discrete devices that can run simultaneously ...
    • Adaptive prediction models for data center resources utilization estimation 

      Baig, Shuja-ur-Rehman; Iqbal, Waheed; Berral García, Josep Lluís; Erradi, Abdelkarim; Carrera Pérez, David (2019-12)
      Article
      Open Access
      Accurate estimation of data center resource utilization is a challenging task due to multi-tenant co-hosted applications having dynamic and time-varying workloads. Accurate estimation of future resources utilization helps ...
    • Adaptive sliding windows for improved estimation of data center resource utilization 

      Baig, Shuja-ur-Rehman; Iqbal, Waheed; Berral García, Josep Lluís; Carrera Pérez, David (Elsevier, 2020-03)
      Article
      Open Access
      Accurate prediction of data center resource utilization is required for capacity planning, job scheduling, energy saving, workload placement, and load balancing to utilize the resources efficiently. However, accurately ...
    • An improved heuristic for capacitated location problems: some theoretical considerations about its performance 

      Barceló Bugeda, Jaime (1984)
      Research report
      Open Access
      This paper describes a dual greedy heuristic for capacitated plant location problems and studies its computational behaviour. The good computational results obtained are explained from a theoretical viewpoint by means of ...
    • Anàlisi i optimització dels processos d’assignació de mostradors de facturació d’equipatges als aeroports 

      Fornés Martínez, Hèctor (Universitat Politècnica de Catalunya, 2012-06)
      Minor thesis
      Open Access
      [ANGLÈS] The check-in process is usually the first step that passengers do when they reach the airport, and thus, is the first impression that passengers get from their travel experience. Unfortunately, this step is ...
    • Arbitration policies for on-demand user-level I/O forwarding on HPC platforms 

      Bez, Jean Luca; Miranda, Alberto; Nou Castell, Ramon; Zanon Boito, Francieli; Cortés, Toni; Navaux, Philippe O.A. (Institute of Electrical and Electronics Engineers (IEEE), 2021)
      Conference report
      Open Access
      I/O forwarding is a well-established and widely-adopted technique in HPC to reduce contention in the access to storage servers and transparently improve I/O performance. Rather than having applications directly accessing ...
    • Architectural support for real-time task scheduling in SMT processors 

      Cazorla Almeida, Francisco Javier; Knijnenburg, Peter M.W.; Sakellariou, Rizos; Fernández, Enrique; Ramírez Bellido, Alejandro; Valero Cortés, Mateo (2005)
      Research report
      Open Access
      In Simultaneous Multithreaded (SMT) architectures most hardware resources are shared between threads. This provides a good cost/performance trade-off which renders these architectures suitable for use in embedded systems. ...
    • Auction-based offloading for base station switching off in Heterogeneous Networks 

      Bousia, Alexandra; Kartsakli, Elli; Antonopoulos, Angelos; Alonso Zárate, Luis Gonzaga; Verikoukis, Christos (Institute of Electrical and Electronics Engineers (IEEE), 2016)
      Conference report
      Restricted access - publisher's policy
      The emerging traffic demand has triggered an impressive deployment of network infrastructure, including macro Base Stations (BSs) and Small Cells (SCs), leading to increased energy consumption and expenditures. However, ...
    • Augmenting elasticity controllers for improved accuracy 

      Rameshan, Navaneeth; Ying, Liu; Navarro Moldes, Leandro; Vlassov, Vladimir (Institute of Electrical and Electronics Engineers (IEEE), 2016)
      Conference report
      Restricted access - publisher's policy
      Elastic resource provisioning is used to guarantee service level objectives (SLO) at reduced cost in a Cloud platform. However, performance interference in the hosting platform introduces uncertainty in the performance ...
    • Balancing HPC applications through smart allocation of resources in MT processors 

      Boneti, Carlos; Gioiosa, Roberto; Cazorla, Francisco; Corbalán González, Julita; Labarta Mancho, Jesús José; Valero Cortés, Mateo (Institute of Electrical and Electronics Engineers (IEEE), 2008)
      Conference report
      Open Access
      Many studies have shown that load imbalancing causes significant performance degradation in High Performance Computing (HPC) applications. Nowadays, Multi-Threaded (MT1) processors are widely used in HPC for their good ...