Ara es mostren els items 119-138 de 145

    • TASA: toolchain-agnostic static software randomisation for critical real-time systems 

      Kosmidis, Leonidas; Vargas, Roberto; Morales, David; Quiñones, Eduardo; Abella Ferrer, Jaume; Cazorla Almeida, Francisco Javier (Association for Computing Machinery (ACM), 2016)
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      Measurement-Based Probabilistic Timing Analysis (MBPTA) derives WCET estimates for tasks running on processors comprising high-performance features such as caches. MBPTA's correct application requires the system to exhibit ...
    • The next convergence: High-performance and mission-critical markets 

      Girbal, Sylvain; Moretó Planas, Miquel; Grasset, Arnaud; Abella Ferrer, Jaume; Quiñones, Eduardo; Cazorla Almeida, Francisco Javier; Yehia, Sami (2013)
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      The well-known convergence of the high-performance computing and the mobile markets has been a dominating factor in the computing market during the last two decades. In this paper we witness a new type of convergence between ...
    • Thread assignment in multicore/multithreaded processors: A statistical approach 

      Radojković, Petar; Carpenter, Paul Matthew; Moretó Planas, Miquel; Cakarevic, Vladimir; Verdú Mulà, Javier; Pajuelo González, Manuel Alejandro; Cazorla Almeida, Francisco Javier; Nemirovsky, Mario; Valero Cortés, Mateo (2016-01-01)
      Article
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      The introduction of multicore/multithreaded processors, comprised of a large number of hardware contexts (virtual CPUs) that share resources at multiple levels, has made process scheduling, in particular assignment of ...
    • Thread assignment of multithreaded network applications in multicore/multithreaded processors 

      Radojković, Petar; Cakarevic, Vladimir; Verdú Mulà, Javier; Pajuelo González, Manuel Alejandro; Cazorla Almeida, Francisco Javier; Nemirovsky, Mario; Valero Cortés, Mateo (2013-12)
      Article
      Accés obert
      The introduction of multithreaded processors comprised of a large number of cores with many shared resources makes thread scheduling, and in particular optimal assignment of running threads to processor hardware contexts ...
    • Thread to core assignment in SMT on-chip multiprocessors 

      Acosta Ojeda, Carmelo Alexis; Cazorla Almeida, Francisco Javier; Ramírez Bellido, Alejandro; Valero Cortés, Mateo (IEEE Computer Society Publications, 2009)
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      State-of-the-art high-performance processors like the IBM POWER5 and Intel i7 show a trend in industry towards on-chip Multiprocessors (CMP) involving Simultaneous Multithreading (SMT) in each core. In these processors, ...
    • Thread to core assignment in SMT on-chip multiprocessors 

      Acosta Ojeda, Carmelo Alexis; Cazorla Almeida, Francisco Javier; Ramírez Bellido, Alejandro; Valero Cortés, Mateo (2009)
      Article
      Accés obert
      State-of-the-art high-performance processors like the IBM POWER5 and Intel i7 show a trend in industry towards on-chip Multiprocessors (CMP) involving Simultaneous Multithreading (SMT) in each core. In these processors, ...
    • Thread to strand binding of parallel network applications in massive multi-threaded systems 

      Radojković, Petar; Cakarevic, Vladimir; Verdú Mulà, Javier; Pajuelo González, Manuel Alejandro; Cazorla Almeida, Francisco Javier; Nemirovsky, Mario; Valero Cortés, Mateo (2010-05)
      Article
      Accés restringit per política de l'editorial
      In processors with several levels of hardware resource sharing, like CMPs in which each core is an SMT, the scheduling process becomes more complex than in processors with a single level of resource sharing, such as pure-SMT ...
    • Thread to strand binding of parallel network applications in massive multi-threaded systems 

      Radojković, Petar; Cakarevic, Vladimir; Verdú Mulà, Javier; Pajuelo González, Manuel Alejandro; Cazorla Almeida, Francisco Javier; Nemirovsky, Mario; Valero Cortés, Mateo (ACM Press. Association for Computing Machinery, 2010-01)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      In processors with several levels of hardware resource sharing, like CMPs in which each core is an SMT, the scheduling process becomes more complex than in processors with a single level of resource sharing, such as pure-SMT ...
    • Time-analysable non-partitioned shared caches for real-time multicore systems 

      Slijepcevic, Mladen; Kosmidis, Leonidas; Abella Ferrer, Jaume; Quiñones, Eduardo; Cazorla Almeida, Francisco Javier (Association for Computing Machinery (ACM), 2014)
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      Accés restringit per política de l'editorial
      Shared caches in multicores challenge Worst-Case Execution Time (WCET) estimation due to inter-task interferences. Hard-ware and software cache partitioning address this issue although they complicate data sharing among ...
    • Timing of autonomous driving software: problem analysis and prospects for future solutions 

      Alcon, Miguel; Tabani, Hamid; Kosmidis, Leonidas; Mezzetti, Enrico; Abella Ferrer, Jaume; Cazorla Almeida, Francisco Javier (IEEE, 2020)
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      The software used to implement advanced functionalities in critical domains (e.g. autonomous operation) impairs software timing. This is not only due to the complexity of the underlying high-performance hardware deployed ...
    • Towards functional safety compliance of matrix–matrix multiplication for machine learning-based autonomous systems 

      Fernández Muñoz, Javier; Pérez Cerrolaza, Jon; Agirre Troncoso, Irune; Allende, Imanol; Abella Ferrer, Jaume; Cazorla Almeida, Francisco Javier (2021-12)
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      Autonomous systems execute complex tasks to perceive the environment and take self-aware decisions with limited human interaction. This autonomy is commonly achieved with the support of machine learning algorithms. The ...
    • Towards limiting the impact of timing anomalies in complex real-time processors 

      Benedicte Illescas, Pedro; Abella Ferrer, Jaume; Mezzetti, Enrico; Cazorla Almeida, Francisco Javier; Hernández Luz, Carles (2019)
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      Timing verification of embedded critical real-time systems is hindered by complex designs. Timing anomalies, deeply analyzed in static timing analysis, require specific solutions to bound their impact. For the first time, ...
    • Tracing Hardware Monitors in the GR712RC Multicore Platform: Challenges and Lessons Learnt from a Space Case Study 

      Palomo, Xavier; Girbal, Sylvain; Abella Ferrer, Jaume; Rioux, Laurent; Fernández, Mikel; Mezzetti, Enrico; Cazorla Almeida, Francisco Javier (Schloss Dagstuhl – Leibniz-Zentrum für Informatik, 2020)
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      The demand for increased computing performance is driving industry in critical-embedded systems (CES) domains, e.g. space, towards the use of multicores processors. Multicores, however, pose several challenges that must ...
    • Tracking coherence-related contention delays in real-time multicore systems 

      Pujol Torramorell, Roger; Hassan, Mohamed; Tabani, Hamid; Abella Ferrer, Jaume; Cazorla Almeida, Francisco Javier (Association for Computing Machinery (ACM), 2023)
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      The prevailing use of multicores in Embedded Critical Systems (ECS) is multi-application workloads in which independent applications run in different cores with data sharing restricted to the communication between applications ...
    • Unboxing the sand: on deploying safety measures in the programmable logic of COTS MPSoCs 

      Alcaide Portet, Sergi; Cabo Pitarch, Guillem; Bas Jalón, Francisco; Benedicte Illescas, Pedro; Mazzocchetti, Fabio; Cazorla Almeida, Francisco Javier; Abella Ferrer, Jaume (Association Aéronautique et Astronautique de France (3AF), 2022)
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      The lack of sufficient hardware support for functional safety precludes the full adoption of many Commercial Off-the-Shelf (COTS) MPSoCs in safety-related systems, such as those in the aerospace industry. Some recent MPSoCs ...
    • Uncertainty Management in Dependable and Intelligent Embedded Software 

      Perez Cerrolaza, Jon; Cazorla Almeida, Francisco Javier; Abella Ferrer, Jaume (Institute of Electrical and Electronics Engineers (IEEE), 2023)
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      Accés obert
      The development of dependable and intelligent embedded systems progresses. However, integrating complex software stacks, machine learning solutions, and high-performance computing devices amplifies the functional and ...
    • Understanding and exploiting the internals of GPU resource allocation for critical systems 

      Calderón Torres, Alejandro Josué; Kosmidis, Leonidas; Nicolás Ramírez, Carlos Fernando; Cazorla Almeida, Francisco Javier; Onaindia, Peio (Institute of Electrical and Electronics Engineers (IEEE), 2019)
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      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 ...
    • Understanding the overhead of the spin-lock loop in CMT architectures 

      Cakarevic, Vladimir; Radojković, Petar; Verdú Mulà, Javier; Cazorla Almeida, Francisco Javier; Gioiosa, Roberto; Pajuelo González, Manuel Alejandro; Nemirovsky, Mario; Valero Cortés, Mateo (2008)
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      Spin locks are a synchronization mechanisms used to provide mutual exclusion to shared software resources. Spin locks are used over other synchronization mechanisms in several situations, like when the average waiting ...
    • UP2DATE: Safe and secure over-the-air software updates on high-performance mixed-criticality systems 

      Agirre, Irene; Onaindia, Peio; Poggi, Tomasso; Yarza, Irune; Cazorla Almeida, Francisco Javier; Kosmidis, Leonidas; Grüttner, Kim; Abuteir, Mohammed; Loewe, Jan; Orbegozo, Juan M.; Botta, Stefania (Institute of Electrical and Electronics Engineers (IEEE), 2020)
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      Following the same trend of consumer electronics, safety-critical industries are starting to adopt Over-The-Air Software Updates (OTASU) on their embedded systems. The motivation behind this trend is twofold. On the one ...
    • Using Markov’s inequality with power-of-k function for probabilistic WCET estimation 

      Vilardell Moreno, Sergi; Serra Mochales, Isabel; Mezzetti, Enrico; Abella Ferrer, Jaume; Cazorla Almeida, Francisco Javier; del Castillo Franquet, Joan (Schloss Dagstuhl - Leibniz-Zentrum für Informatik, 2022)
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      Deriving WCET estimates for software programs with probabilistic means (a.k.a. pWCET estimation) has received significant attention during last years as a way to deal with the increased complexity of the processors used ...