Now showing items 1-20 of 52

    • 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 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 multidisciplinary model to quantify human uncertainty in human-centric cyber-physical-social systems: A 5G application use case 

      Alzate Mejía, Nestor; Perelló Muntan, Jordi; Santos Boada, Germán; Almeida Amazonas, José Roberto de (Institute of Electrical and Electronics Engineers (IEEE), 2024-05-03)
      Article
      Open Access
      The emerging Human-Centric Networks (HCN) paradigm shifts the passive role of individuals to an active one, intertwining the uncertainty of network resource usage with human dynamics, which are difficult to analyze and ...
    • A procedure to compute the nucleolus of the assignment game 

      Martínez De Albeniz, Javier; Rafels Pallarola, Carlos; Ybern Carballo, María de las Nieves (2013-11)
      Article
      Restricted access - publisher's policy
      The assignment game introduced by Shapley and Shubik (1972) [6] is a model for a two-sided market where there is an exchange of indivisible goods for money and buyers or sellers demand or supply exactly one unit of the ...
    • Adaptive power shifting for power-constrained heterogeneous systems 

      Ortega Carrasco, Cristobal; Alvarez Martí, Lluc; Buyuktosunoglu, Alper; Bertran Monfort, Ramon; Rosedahl, Todd Jon; Bose, Pradip; Moretó Planas, Miquel (Institute of Electrical and Electronics Engineers (IEEE), 2023-03-01)
      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 ...
    • Burst-aware predictive autoscaling for containerized microservices 

      Abdullah, Muhammad; Iqbal, Waheed; Berral García, Josep Lluís; Polo Bardés, Jorda; Carrera Pérez, David (2022-05-01)
      Article
      Open Access
      Autoscaling methods are used for cloud-hosted applications to dynamically scale the allocated resources for guaranteeing Quality-of-Service (QoS). The public-facing application serves dynamic workloads, which contain bursts ...
    • Closed-form multicast precoding for satellite flexible payloads 

      Vázquez Oliver, Miguel Ángel; Artiga Campos, Xavier; Pérez Neira, Ana Isabel (Institute of Electrical and Electronics Engineers (IEEE), 2021)
      Conference report
      Open Access
      This paper investigates a novel closed-form noniterative precoding technique for multicast multibeam satellite systems. Next-generation satellite systems will be benefited from the flexible use of the satellite resources ...
    • Contention-aware application performance prediction for disaggregated memory systems 

      Vieira Zacarias, Felippe; Nishtala, Rajiv; Carpenter, Paul Matthew (Association for Computing Machinery (ACM), 2020)
      Conference report
      Open Access
      Disaggregated memory has recently been proposed as a way to allow flexible and fine-grained allocation of memory capacity to compute jobs. This paper makes an important step towards effective resource allocation on ...
    • Desarrollo de un modelo de asignación flexible y dinámico de recursos en aerolíneas. 

      Pitarque Labòria, Ramon Pere (Universitat Politècnica de Catalunya, 2022-07-20)
      Bachelor thesis
      Open Access
      The air transport industry is governed by fierce competition between the different airlines, which are fighting to gain market share by offering better connections at more affordable prices. This competition intensifies ...
    • DRMaestro: orchestrating disaggregated resources on virtualized data-centers 

      Carneiro do Amaral, Marcelo; Polo Bardés, Jorda; Carrera Pérez, David; González, Nelson; Yang, Chih-Chieh; Morari, Alessandro; D'Amora, Bruce; Youssef, Alaa; Steinder, Malgorzata (Springer, 2021-03-06)
      Article
      Open Access
      Modern applications demand resources at an unprecedented level. In this sense, data-centers are required to scale efficiently to cope with such demand. Resource disaggregation has the potential to improve resource-efficiency ...
    • Dynamic load balancing of MPI+OpenMP applications 

      Corbalán González, Julita; Duran González, Alejandro; Labarta Mancho, Jesús José (Institute of Electrical and Electronics Engineers (IEEE), 2004)
      Conference report
      Open Access
      The hybrid programming model MPI+OpenMP are useful to solve the problems of load balancing of parallel applications independently of the architecture. Typical approaches to balance parallel applications using two levels ...
    • Dynamic resource allocation for efficient parallel CFD simulations 

      Houzeaux, Guillaume; Badia Sala, Rosa Maria; Borrell Pol, Ricard; Dosimont, Damien; Ejarque Artigas, Jorge; Garcia Gasulla, Marta; López Herrero, Víctor (Elsevier, 2022-09-15)
      Article
      Restricted access - publisher's policy
      CFD users of supercomputers usually resort to rule-of-thumb methods to select the number of subdomains (partitions) when relying on MPI-based parallelization. One common approach is to set a minimum number of elements or ...
    • Effort-based incentives for resource sharing in collaborative volunteer applications 

      Vega d'Aurelio, Davide; Meseguer Pallarès, Roc; Freitag, Fèlix; Ochoa, Sergio (Institute of Electrical and Electronics Engineers (IEEE), 2013)
      Conference report
      Restricted access - publisher's policy
      Collaborative and volunteer applications need to implement incentive mechanisms to regulate resource sharing and encourage network nodes to contribute for reaching a certain goal. Typically, these incentive mechanisms ...
    • Energy and rate allocation for massive multiple access with interference cancelation 

      Molina Oliveras, Francesc; Sala Álvarez, José; Villares Piera, Nemesio Javier; Rey Micolau, Francesc (Institute of Electrical and Electronics Engineers (IEEE), 2022)
      Article
      Open Access
      This article addresses the problem of energy and code allocation to many users accessing, under spreading-based nonorthogonal multiple access, a wireless node set up with a successive interference cancellation architecture ...
    • Energy-efficient dynamic resource allocation with energy harvesting nodes 

      Rubio López, Javier (Universitat Politècnica de Catalunya, 2012-07-25)
      Master thesis
      Open Access
      [ANGLÈS] In wireless communications, there is a trend to deploy shorter-distance networks to cope with the high demanding necessities of bit-rate that current applications require. In such networks, the power needed for ...