Computer Sciences

Enviaments recents

  • Work-in-Progress Paper: An Analysis of the Impact of Dependencies on Probabilistic Timing Analysis and Task Scheduling 

    Mezzetti, Enrico; Abella, Jaume; Hernandez, Carles; Cazorla, Francisco J. (IEEE, 2018-02-01)
    Comunicació de congrés
    Accés obert
    Recently there has been a renewed interest for probabilistic timing analysis (PTA) and probabilistic task scheduling (PTS). Despite the number of works in both fields, the link between them is weak: works on the latter ...

  • Performance and Power Analysis of HPC Workloads on Heterogenous Multi-Node Clusters 

    Mantovani, Filippo; Calore, Enrico (MDPI, 2018-05-04)
    Article
    Accés obert
    Performance analysis tools allow application developers to identify and characterize the inefficiencies that cause performance degradation in their codes, allowing for application optimizations. Due to the increasing ...

  • Design and integration of hierarchical-placement multi-level caches for real-time systems 

    Benedicte, Pedro; Hernandez, Carles; Abella, Jaume; Cazorla, Francisco J. (IEEE, 2018-04-23)
    Comunicació de congrés
    Accés obert
    Enabling timing analysis in the presence of caches has been pursued by the real-time embedded systems (RTES) community for years due to cache's huge potential to reduce software's worst-case execution time (WCET). However, ...

  • dReDBox: Materializing a full-stack rack-scale system prototype of a next-generation disaggregated datacenter 

    Bielski, M.; Syrigos, I.; Katrinis, K.; Syrivelis, D.; Reale, A.; Theodoropoulos, D.; Alachiotis, N.; Pnevmatikatos, D.; Pap, E.H.; Zervas, G.; Mishra, V.; Saljoghei, A.; Rigo, A.; Fernando Zazo, J.; Lopez-Buedo, S.; Torrents, Marti; Zyulkyarov, Ferad Hasanov; Enrico, M.; Gonzalez de Dios, O. (IEEE, 2018-04-23)
    Comunicació de congrés
    Accés obert
    Current datacenters are based on server machines, whose mainboard and hardware components form the baseline, monolithic building block that the rest of the system software, middleware and application stack are built upon. ...

  • The HPCG benchmark: analysis, shared memory preliminary improvements and evaluation on an Arm-based platform 

    Ruiz, Daniel; Mantovani, Filippo; Casas, Marc; Labarta, Jesus; Spiga, Filippo (2018)
    Report de recerca
    Accés obert
    The High-Performance Conjugate Gradient (HPCG) benchmark complements the LINPACK benchmark in the performance evaluation coverage of large High-Performance Computing (HPC) systems. It is recognized as a more representative ...

  • Enabling GPU Support for the COMPSs-Mobile Framework 

    Lordan, Francesc; Badia, Rosa M.; Hwu, Wen-Mei (Springer, 2018-01-31)
    Comunicació de congrés
    Accés obert
    Using the GPUs embedded in mobile devices allows for increasing the performance of the applications running on them while reducing the energy consumption of their execution. This article presents a task-based solution for ...

  • Energy Analysis of a 4D Variational Data Assimilation Algorithm and Evaluation on ARM-Based HPC Systems 

    Arcucci, Rossella; Basciano, Davide; Cilardo, Alessandro; D'Amore, Luisa; Mantovani, Filippo (Springer, 2018-03-23)
    Comunicació de congrés
    Accés obert
    Driven by the emerging requirements of High Performance Computing (HPC) architectures, the main focus of this work is the interplay of computational and energetic aspects of a Four Dimensional Variational (4DVAR) Data ...

  • Brook Auto: High-Level Certification-Friendly Programming for GPU-powered Automotive Systems 

    Trompouki, Matina M.; Kosmidis, Leonidas (Association for Computing Machinery (ACM), 2018)
    Comunicació de congrés
    Accés obert
    Modern automotive systems require increased performance to implement Advanced Driving Assistance Systems (ADAS). GPU-powered platforms are promising candidates for such computational tasks, however current low-level ...

  • DJSB: Dynamic Job Scheduling Benchmark 

    Lopez, Victor; Jokanovic, Ana; Amico, Marco D'; Garcia, Marta; Sirvent, Raul; Corbalan, Julita (Springer, 2018-02-28)
    Comunicació de congrés
    Accés obert
    High-performance computing (HPC) systems are very big and powerful systems, with the main goal of achieving maximum performance of parallel jobs. Many dynamic factors influence the performance which makes this goal a ...

  • Diluting the Scalability Boundaries: Exploring the Use of Disaggregated Architectures for High-Level Network Data Analysis 

    Vega, Carlos; Zazo, Jose F.; Meyer, Hugo; Zyulkyarov, Ferad; Lopez-Buedo, S.; Aracil, Javier (IEEE, 2018-02-15)
    Comunicació de congrés
    Accés obert
    Traditional data centers are designed with a rigid architecture of fit-for-purpose servers that provision resources beyond the average workload in order to deal with occasional peaks of data. Heterogeneous data centers are ...

  • On the tailoring of CAST-32A certification guidance to real COTS multicore architectures 

    Agirre, Irune; Abella, Jaume; Azkarate-Askasua, Mikel; Cazorla, Francisco J. (IEEE, 2018-03-12)
    Comunicació de congrés
    Accés obert
    The use of Commercial Off-The-Shelf (COTS) multicores in real-time industry is on the rise due to multicores' potential performance increase and energy reduction. Yet, the unpredictable impact on timing of contention in ...

  • Reconciling Time Predictability and Performance in Future Computing Systems 

    Cazorla, Francisco J.; Abella, Jaume; Mezzetti, Enrico; Hernandez, Carles; Vardanega, Tullio; Bernat, Guillem (IEEE, 2018-04)
    Article
    Accés obert
    MBTA studies the system’s timing in analysis scenarios, to determine upper bounds to the worst-case execution-time behavior that may occur at operation. MBTA’s challenge is to construct analysis-time scenarios that help ...

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