Enviaments recents

  • Software Time Reliability in the Presence of Cache Memories 

    Milutinovic, Suzana; Abella, Jaume; Agirre, Irune; Azkarate-Askasua, Mikel; Mezzetti, Enrico; Vardanega, Tullio; Cazorla, Francisco J. (Springer International Publishing, 2017-05-30)
    Comunicació de congrés
    Accés obert
    The use of caches challenges measurement-based timing analysis (MBTA) in critical embedded systems. In the presence of caches, the worst-case timing behavior of a system heavily depends on how code and data are laid out ...
  • An Analysis of Lazy and Eager Limited Preemption Approaches under DAG-Based Global Fixed Priority Scheduling 

    Serrano, Maria A.; Melani, Alessandra; Kehr, Sebastian; Bertogna, Marko; Quiñones, Eduardo (Institute of Electrical and Electronics Engineers (IEEE), 2017-07-03)
    Comunicació de congrés
    Accés obert
    DAG-based scheduling models have been shown to effectively express the parallel execution of current many-core heterogeneous architectures. However, their applicability to real-time settings is limited by the difficulties ...
  • MC2: Multicore and Cache Analysis via Deterministic and Probabilistic Jitter Bounding 

    Díaz, Enrique; Fernández, Mikel; Kosmidis, Leonidas; Mezzetti, Enrico; Hernandez, Carles; Abella, Jaume; Cazorla, Francisco J. (Springer International Publishing, 2017-05-30)
    Comunicació de congrés
    Accés obert
    In critical domains, reliable software execution is increasingly involving aspects related to the timing dimension. This is due to the advent of high-performance (complex) hardware, used to provide the rising levels of ...
  • EPC Enacted: Integration in an Industrial Toolbox and Use against a Railway Application 

    Mezzetti, Enrico; Fernandez, Mikel; Bardizbanyan, Alen; Agirre, Irune; Abella, Jaume; Vardanega, Tullio; Cazorla, Francisco J. (Institute of Electrical and Electronics Engineers (IEEE), 2017-06-08)
    Comunicació de congrés
    Accés obert
    Measurement-based timing analysis approaches are increasingly making their way into several industrial domains on account of their good cost-benefit ratio. The trustworthiness of those methods, however, suffers from the ...
  • Iteration-fusing conjugate gradient 

    Zhuang, Sicong; Casas, Marc (Association for Computing Machinery (ACM), 2017-06)
    Comunicació de congrés
    Accés obert
    This paper presents the Iteration-Fusing Conjugate Gradient (IFCG) approach which is an evolution of the Conjugate Gradient method that consists in i) letting computations from different iterations to overlap between them ...
  • Automatic Adaption of the Sampling Frequency for Detailed Performance Analysis 

    Wagner, Michael; Knüpfer, Andreas (Institute of Electrical and Electronics Engineers (IEEE), 2017-07-13)
    Comunicació de congrés
    Accés obert
    One of the most urgent challenges in event based performance analysis is the enormous amount of collected data. Combining event tracing and periodic sampling has been a successful approach to allow a detailed event-based ...
  • Supporting automatic recovery in offloaded distributed programming models through MPI-3 techniques 

    Peña, Antonio J.; Beltran, Vicenç; Clauss, Carsten; Moschny, Thomas (ACM Digital Library, 2017-06-15)
    Comunicació de congrés
    Accés obert
    In this paper we describe the design of fault tolerance capabilities for general-purpose offload semantics, based on the OmpSs programming model. Using ParaStation MPI, a production MPI-3.1 implementation, we explore the ...
  • Sharing the instruction cache among lean cores on an asymmetric CMP for HPC applications 

    Milic, Ugljesa; Rico, Alejandro; Carpenter, Paul; Ramirez, Alex (Institute of Electrical and Electronics Engineers (IEEE), 2017-07-13)
    Comunicació de congrés
    Accés obert
    High performance computing (HPC) applications have parallel code sections that must scale to large numbers of cores, which makes them sensitive to serial regions. Current supercomputing systems with heterogeneous or ...
  • Optimisation opportunities and evaluation for GPGPU applications on low-end mobile GPUs 

    Trompouki, Matina M.; Kosmidis, Leonidas (Institute of Electrical and Electronics Engineers (IEEE), 2017-05-15)
    Comunicació de congrés
    Accés obert
    Previous works in the literature have shown the feasibility of general purpose computations for non-visual applications on low-end mobile graphics processors using graphics APIs. These works focused only on the functional ...
  • Parcus: Energy-Aware and Robust Parallelization of AUTOSAR Legacy Applications 

    Kehr, Sebastian; Quiñones, Eduardo; Langen, Dominik; Böddeker, Bert; Schäfer, Günter (Institute of Electrical and Electronics Engineers (IEEE), 2017-06-08)
    Comunicació de congrés
    Accés obert
    Embedded multicore processors are an attractive alternative to sophisticated single-core processors for the use in automobile electronic control units (ECUs), due to their expected higher performance and energy efficiency. ...

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