Enviaments recents

  • Enabling PAPI support for advanced performance analysis on ThunderX SoC 

    Ruiz, Daniel; Calore, Enrico; Mantovani, Filippo (2017)
    Report de recerca
    Accés obert
    The interest towards ARM based platforms as HPC solutions increased significantly during the last 5 years, and Cavium has been one of the first SoC provider integrating a 48 cores ARM SoC targeting the high end server ...
  • 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 ...
  • The Design and Performance of Batched BLAS on Modern High-Performance Computing Systems 

    Dongarra, Jack; Hammarling, Sven; Higham, Nicholas J.; Relton, Samuel D.; Valero-Lara, Pedro; Zounon, Mawussi (Elsevier, 2017)
    Article
    Accés obert
    A current trend in high-performance computing is to decompose a large linear algebra problem into batches containing thousands of smaller problems, that can be solved independently, before collating the results. To standardize ...
  • 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 ...
  • Disaggregated Computing. An Evaluation of Current Trends for Datacentres 

    Meyer, Hugo; Sancho, Jose C.; Quiroga, Josue V.; Zyulkyarov, Ferad; Roca, Damian; Nemirovsky, Mario (Elsevier, 2017)
    Article
    Accés obert
    Next generation data centers will likely be based on the emerging paradigm of disaggregated function-blocks-as-a-unit departing from the current state of mainboard-as-a-unit. Multiple functional blocks or bricks such as ...
  • Towards HPC-Embedded. Case Study: Kalray and Message-Passing on NoC 

    Valero-Lara, Pedro; Krishnasamy, Ezhilmathi; Jansson, Johan (Universitatea de Vest, 2017-06)
    Article
    Accés obert
    Today one of the most important challenges in HPC is the development of computers with a low power consumption. In this context, recently, new embedded many-core systems have emerged. One of them is Kalray. Unlike other ...
  • 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 ...

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