Ara es mostren els items 43-62 de 144

    • Fitting processor architectures for measurement-based probabilistic timing analysis 

      Kosmidis, Leonidas; Quiñones, Eduardo; Abella Ferrer, Jaume; Vardanega, Tullio; Hernández, Carles; Gianarro, Andrea; Broster, Ian; Cazorla Almeida, Francisco Javier (2016-11-01)
      Article
      Accés obert
      The pressing market demand for competitive performance/cost ratios compels Critical Real-Time Embedded Systems industry to employ feature-rich hardware. The ensuing rise in hardware complexity however makes worst-case ...
    • GMAI: Understanding and exploiting the internals of GPU resource allocation in critical systems 

      Calderón Torres, Alejandro Josué; Kosmidis, Leonidas; Nicolás Ramírez, Carlos Fernando; Cazorla Almeida, Francisco Javier; Onaindia, Peio (2020-09)
      Article
      Accés obert
      Critical real-time systems require strict resource provisioning in terms of memory and timing. The constant need for higher performance in these systems has led industry to recently include GPUs. However, GPU software ...
    • GPU devices for safety-critical systems: a survey 

      Pérez Cerrolaza, Jon; Abella Ferrer, Jaume; Kosmidis, Leonidas; Calderón Torres, Alejandro Josué; Cazorla Almeida, Francisco Javier; Flores Barroso, José Luis (Association for Computing Machinery (ACM), 2023-07)
      Article
      Accés obert
      Graphics Processing Unit (GPU) devices and their associated software programming languages and frameworks can deliver the computing performance required to facilitate the development of next-generation high-performance ...
    • GPU4S: Embedded GPUs in Space 

      Kosmidis, Leonidas; Lachaize, Jérôme; Abella Ferrer, Jaume; Notebaert, Olivier; Cazorla Almeida, Francisco Javier; Steenari, David (Institute of Electrical and Electronics Engineers (IEEE), 2019)
      Text en actes de congrés
      Accés obert
      Following the same trend of automotive and avionics, the space domain is witnessing an increase in the on-board computing performance demands. This raise in performance needs comes from both control and payload parts of ...
    • GPU4S: Embedded GPUs in Space - Latest project updates 

      Kosmidis, Leonidas; Rodríguez Ferrandez, Iván; Jover Álvarez, Álvaro; Alcaide Portet, Sergi; Lachaize, Jérôme; Abella Ferrer, Jaume; Notebaert, Olivier; Cazorla Almeida, Francisco Javier; Steenari, David (2020-09)
      Article
      Accés obert
      Following the trend of other safety-critical industries like automotive and avionics, the space domain is witnessing an increase in the on-board computing performance demands. This raise in performance needs comes from ...
    • HRM: merging hardware event monitors for improved timing analysis of complex MPSoCs 

      Vilardell Moreno, Sergi; Serra Mochales, Isabel; Santalla, Roberto; Mezzetti, Enrico; Abella Ferrer, Jaume; Cazorla Almeida, Francisco Javier (2020-11)
      Article
      Accés obert
      The Performance Monitoring Unit (PMU) in MPSoCs is at the heart of the latest measurement-based timing analysis techniques in Critical Embedded Systems. In particular, hardware event monitors (HEMs) in the PMU are used as ...
    • HWP: hardware support to reconcile cache energy, complexity, performance and WCET estimates in multicore real-time systems 

      Benedicte Illescas, Pedro; Hernandez, C.; Abella Ferrer, Jaume; Cazorla Almeida, Francisco Javier (Schloss Dagstuhl - Leibniz-Zentrum für Informatik, 2018)
      Text en actes de congrés
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      High-performance processors have deployed multilevel cache (MLC) systems for decades. In the embedded real-time market, the use of MLC is also on the rise, with processors for future systems in space, railway, avionics and ...
    • Implicit vs. explicit resource allocation in SMT processors 

      Cazorla Almeida, Francisco Javier; Knijnenburg, Peter M.W.; Sakellariou, Rizos; Fernandez Garcia, Enrique; Ramírez Bellido, Alejandro; Valero Cortés, Mateo (Institute of Electrical and Electronics Engineers (IEEE), 2004)
      Text en actes de congrés
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      In a simultaneous multithreaded (SMT) architecture, the front end of a superscalar is adapted in order to be able to fetch from several threads while the back end is shared among the threads. In this paper, we describe ...
    • Improving early design stage timing modeling in multicore based real-time systems 

      Trilla, David; Jalle Ibarra, Javier; Fernández, Mikel; Abella Ferrer, Jaume; Cazorla Almeida, Francisco Javier (Institute of Electrical and Electronics Engineers (IEEE), 2016)
      Text en actes de congrés
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      This paper presents a modelling approach for the timing behavior of real-time embedded systems (RTES) in early design phases. The model focuses on multicore processors - accepted as the next computing platform for RTES - ...
    • Improving performance guarantees in wormhole mesh NoC designs 

      Panic, Milos; Hernández, Carles; Abella Ferrer, Jaume; Quiñones, Eduardo; Cazorla Almeida, Francisco Javier (Institute of Electrical and Electronics Engineers (IEEE), 2016)
      Text en actes de congrés
      Accés obert
      Wormhole-based mesh Networks-on-Chip (wNoC) are deployed in high-performance many-core processors due to their physical scalability and low-cost. Delivering tight and time composable Worst-Case Execution Time (WCET) estimates ...
    • Improving time-randomized cache design 

      Benedicte Illescas, Pedro; Hernández Gañán, Carlos; Abella Ferrer, Jaume; Cazorla Almeida, Francisco Javier (Barcelona Supercomputing Center, 2018-04-24)
      Text en actes de congrés
      Accés obert
      Enabling timing analysis for caches has been pursued by the critical real-time embedded systems (CRTES) community for years due to their potential to reduce worstcase execution times (WCET). Measurement-based protabilistic ...
    • Improving Timing-Related Guarantees for Main Memory in Multicore Critical Embedded Systems 

      Fernández de Lecea, Asier; Hassan, Mohamed; Mezzetti, Enrico; Abella Ferrer, Jaume; Cazorla Almeida, Francisco Javier (Institute of Electrical and Electronics Engineers (IEEE), 2023)
      Comunicació de congrés
      Accés obert
      Main memory is one of the most complex resources to analyze in multicore-based embedded real-time systems, with contention in the memory controller and the timing constraints of the main memory device as the main contributors ...
    • Increasing multicore system efficiency through intelligent bandwidth shifting 

      Jiménez, Víctor; Buyuktosunoglu, Alper; Bose, Pradip; O'Connell, Francis P.; Cazorla Almeida, Francisco Javier; Valero Cortés, Mateo (Institute of Electrical and Electronics Engineers (IEEE), 2015)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      Memory bandwidth is a crucial resource in computing systems. Current CMP/SMT processors have a significant number of cores and they can run many threads concurrently. This large thread count adds high pressure to the memory ...
    • IntPred: flexible, fast, and accurate object detection for autonomous driving systems 

      Tabani, Hamid; Fusi, Matteo; Kosmidis, Leonidas; Abella Ferrer, Jaume; Cazorla Almeida, Francisco Javier (Association for Computing Machinery (ACM), 2020)
      Text en actes de congrés
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      Deep Neural-Network (DNN) based Object Detection is one of the most important and time-consuming stages of Autonomous Driving software in cars. In non-critical domains, the performance and energy requirements of object ...
    • ITCA: Inter-Task Conflict-Aware CPU accounting for CMP 

      Luque, Carlos; Moretó Planas, Miquel; Cazorla Almeida, Francisco Javier; Gioiosa, Roberto; Valero Cortés, Mateo (2010)
      Text en actes de congrés
      Accés obert
      Chip-MultiProcessors (CMP) introduce complexities when accounting CPU utilization to processes because the progress done by a process during an interval of time highly depends on the activity of the other processes it is ...
    • ITCA: inter-task conflict-aware CPU accounting for CMPs 

      Luque, Carlos; Moretó Planas, Miquel; Cazorla Almeida, Francisco Javier; Gioiosa, Roberto; Buyuktosunoglu, Alper; Valero Cortés, Mateo (IEEE Computer Society Publications, 2009)
      Text en actes de congrés
      Accés restringit per política de l'editorial
    • LAEC: Look-Ahead Error Correction Codes in Embedded Processors L1 Data Cache 

      Benedicte Illescas, Pedro; Hernandez, Carles; Abella Ferrer, Jaume; Cazorla Almeida, Francisco Javier (IEEE, 2019-05-16)
      Comunicació de congrés
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      As implementation technology shrinks, the presence of errors in cache memories is becoming an increasing issue in all computing domains. Critical systems, e.g. space and automotive, are specially exposed and susceptible ...
    • Leveraging hardware QoS to control contention in the Xilinx Zynq UltraScale+ MPSoC 

      Serrano Cases, Alejandro; Reina, Juan M.; Abella Ferrer, Jaume; Mezzetti, Enrico; Cazorla Almeida, Francisco Javier (Schloss Dagstuhl - Leibniz-Zentrum für Informatik, 2021)
      Text en actes de congrés
      Accés obert
      The interference co-running tasks generate on each other’s timing behavior continues to be one of the main challenges to be addressed before Multi-Processor System-on-Chip (MPSoCs) are fully embraced in critical systems ...
    • Locality-aware cache random replacement policies 

      Benedicte Illescas, Pedro; Hernández Luz, Carles; Abella Ferrer, Jaume; Cazorla Almeida, Francisco Javier (2019-02-01)
      Article
      Accés obert
      Measurement-Based Probabilistic Timing Analysis (MBPTA) facilitates the analysis of complex software running on hardware comprising high-performance features. MBPTA also aims at preventing additional analysis costs for ...
    • Locality-aware cache random replacement policies 

      Benedicte Illescas, Pedro; Hernandez, Carles; Abella Ferrer, Jaume; Cazorla Almeida, Francisco Javier (Elsevier, 2019-02)
      Article
      Accés obert
      Measurement-Based Probabilistic Timing Analysis (MBPTA) facilitates the analysis of complex software running on hardware comprising high-performance features. MBPTA also aims at preventing additional analysis costs for ...