Browsing by Subject "Embedded computer systems"

Now showing items 1-20 of 165

    • A cache design for probabilistically analysable real-time systems 

      Kosmidis, Leonidas; Abella Ferrer, Jaume; Quiñones, Eduardo; Cazorla Almeida, Francisco Javier (2013)
      Conference report
      Restricted access - publisher's policy
      Caches provide significant performance improvements, though their use in real-time industry is low because current WCET analysis tools require detailed knowledge of program's cache accesses to provide tight WCET estimates. ...

    • A confidence assessment of WCET estimates for software time randomized caches 

      Benedicte Illescas, Pedro; Kosmidis, Leonidas; Quiñones, Eduardo; Abella Ferrer, Jaume; Cazorla Almeida, Francisco Javier (Institute of Electrical and Electronics Engineers (IEEE), 2016)
      Conference report
      Open Access
      Obtaining Worst-Case Execution Time (WCET) estimates is a required step in real-time embedded systems during software verification. Measurement-Based Probabilistic Timing Analysis (MBPTA) aims at obtaining WCET estimates ...

    • A frequency-based approach for the detection and classification of structural changes using t-SNE 

      Agis Cherta, David; Pozo Montero, Francesc (Multidisciplinary Digital Publishing Institute (MDPI), 2019-11-21)
      Article
      Open Access
      This work presents a structural health monitoring (SHM) approach for the detection and classification of structural changes. The proposed strategy is based on t-distributed stochastic neighbor embedding (t-SNE), a nonlinear ...

    • A highly scalable parallel implementation of H.264 

      Azevedo, Arnaldo; Juurlink, Ben; Meenderinck, Cor; Terechko, Andrei; Hoogerbrugge, Jan; Álvarez Mesa, Mauricio; Ramírez Bellido, Alejandro; Valero Cortés, Mateo (2011)
      Article
      Open Access
      Developing parallel applications that can harness and efficiently use future many-core architectures is the key challenge for scalable computing systems. We contribute to this challenge by presenting a parallel implementation ...

    • A low cost split-issue technique to improve performance of SMT clustered VLIW processors 

      Gupta, Manoj; Sánchez Carracedo, Fermín; Llosa Espuny, José Francisco (2010)
      Conference report
      Open Access
      Abstract—Very Long Instruction Word (VLIW) processors are a popular choice in embedded domain due to their hardware simplicity, low cost and low power consumption. Simultaneous MultiThreading (SMT) is a popular technique for ...

    • A low overhead tasking model for OpenMP 

      Yu, Chenle; Royuela Alcázar, Sara; Quiñones Moreno, Eduardo (Springer, 2021)
      Conference report
      Open Access
      OpenMP is a parallel programming model widely used on shared-memory systems. Over the years, the OpenMP community tries to extend the OpenMP Specification to adapt it to modern architectures and expand its usage to other ...

    • A microcontroller-based interface circuit for three-wire connected resistive sensors 

      Reverter Cubarsí, Ferran (Institute of Electrical and Electronics Engineers (IEEE), 2022)
      Article
      Open Access
      This article proposes and experimentally characterizes a novel microcontroller-based interface circuit to read three-wire connected resistive sensors, which are quite common in industrial applications to measure, for ...

    • A streaming machine description and programming model 

      Carpenter, Paul Matthew; Ródenas Picó, David; Martorell Bofill, Xavier; Ramírez Bellido, Alejandro; Ayguadé Parra, Eduard (2007-07)
      Article
      Restricted access - publisher's policy
      In this paper we present the initial development of a streaming environment based on a programming model and machine description. The stream programming model consists of an extension to the C language and it’s translation ...

    • A study on universal language-agnostic sentence embeddings and applications 

      Ribalta Albado, Maria (Universitat Politècnica de Catalunya, 2021-06-28)
      Bachelor thesis
      Open Access
      In this project we make a study on universal language agnostic sentence embeddings: internal neural networks sentence representations that are independent with relation to the task and the language. To be more precise, we ...

    • Acceleration of synthetic aperture radar for on-board space systems 

      Solé i Bonet, Marc; Rodríguez Ferrández, Iván; Steenari, David; Kosmidis, Leonidas (Institute of Electrical and Electronics Engineers (IEEE), 2023)
      Conference report
      Open Access
      There is an increasing trend in modern space systems to move processing that until now was transmitted to ground for processing, on board the satellite. Synthetic Aperture Radar (SAR) is an example of such processing. ...

    • Accurately measuring contention in Mesh NoCs in time-sensitive embedded systems 

      Cardona Nadal, Jordi; Hernández Luz, Carles; Abella Ferrer, Jaume; Mezzetti, Enrico; Cazorla Almeida, Francisco Javier (Association for Computing Machinery (ACM), 2023-05)
      Article
      Open Access
      The computing capacity demanded by embedded systems is on the rise as software implements more functionalities, ranging from best-effort entertainment functions to performance-guaranteed safety-related functions. Heterogeneous ...

    • An approach for detecting power peaks during testing and breaking systematic pathological behavior 

      Trilla Rodríguez, David; Hernández Luz, Carles; Abella Ferrer, Jaume; Cazorla Almeida, Francisco Javier (Institute of Electrical and Electronics Engineers (IEEE), 2019)
      Conference report
      Open Access
      The verification and validation process of embedded critical systems requires providing evidence of their functional correctness and also that their non-functional behavior stays within limits. In this work, we focus on ...

    • An automotive case study on the limits of approximation for object detection 

      Caro Roca, Martí; Tabani, Hamid; Abella Ferrer, Jaume; Moll Echeto, Francisco de Borja; Morancho Llena, Enrique; Canal Corretger, Ramon; Altet Sanahujes, Josep; Calomarde Palomino, Antonio; Cazorla Almeida, Francisco Javier; Rubio Romano, Antonio; Fontova Muste, Pau; Fornt Mas, Jordi (2023-05)
      Article
      Restricted access - publisher's policy
      The accuracy of camera-based object detection (CBOD) built upon deep learning is often evaluated against the real objects in frames only. However, such simplistic evaluation ignores the fact that many unimportant objects ...

    • An evaluation of different DLP alternatives for the embedded media domain 

      Salamí San Juan, Esther; Corbal San Adrián, Jesús; Valero Cortés, Mateo; Espasa Sans, Roger (1999)
      Conference report
      Open Access
      The importance of media processing has produced a revolution in the design of embedded processors. In order to face the high computational and technological demands of near future media applications, new embedded processors ...

    • An On-board Algorithm Implementation on an Embedded GPU: A Space Case Study 

      Rodríguez Ferrandez, Ivan (Universitat Politècnica de Catalunya, 2021-01-22)
      Master thesis
      Open Access
      Covenantee:   Barcelona Supercomputing Center
      On-board processing requirements of future space missions are constantly increasing, calling for new hardware than the traditional ones used in space. Embedded GPUs are an attractive candidate offering both high performance ...

    • Analysis and evaluation of embedded graphics solutions for critical systems 

      Benito Bermúdez, Marc (Universitat Politècnica de Catalunya, 2019-10-16)
      Bachelor thesis
      Open Access
      Covenantee:   Barcelona Supercomputing Center
      En el camp dels sistemes crítics, que inclou l'automotriu, l'aviònica i els sistemes espacials, es necessita més capacitat de computació per aportar tant valor funcional com seguretat addicional. Per aconseguir-ho, la ...

    • Anàlisi i millora d’un sistema operatiu per sistemes encastats: diagnosi i adaptació d’un sistema operatiu per plataformes de desenvolupament basades en sistemes encastats 

      Mellado Cerezo, Álvaro (Universitat Politècnica de Catalunya, 2023-01-27)
      Bachelor thesis
      Open Access
      En aquest document, aprofundirem sobre com gestionen els serveis cada sistema operatiu i les diferències tècniques entre un MicroKernel i un Kernel monolític per tal de conèixer avantatges d’ús de cadascun. També intentarem ...

    • Aplicación de conducción autónoma sobre ROS y sistema embebido 

      Arroyo Pozo, Ivan (Universitat Politècnica de Catalunya, 2022-07-05)
      Bachelor thesis
      Restricted access - author's decision
      Actualment, l'automatització de tasques és un repte per a la humanitat, ja que, gràcies a aquesta la qualitat de vida de les persones millora, en no haver de preocupar-se de fer accions quotidianes que es realitzaven en ...

    • Architectural support for real-time task scheduling in SMT processors 

      Cazorla Almeida, Francisco Javier; Knijnenburg, Peter M.W.; Sakellariou, Rizos; Fernández, Enrique; Ramírez Bellido, Alejandro; Valero Cortés, Mateo (2005)
      Research report
      Open Access
      In Simultaneous Multithreaded (SMT) architectures most hardware resources are shared between threads. This provides a good cost/performance trade-off which renders these architectures suitable for use in embedded systems. ...

    • ASCOM: Affordable Sequence-aware COntention Modeling in crossbar-based MPSoCs 

      Giesen León, Jeremy Jens; Mezzetti, Enrico; Abella Ferrer, Jaume; Cazorla Almeida, Francisco Javier (Association for Computing Machinery (ACM), 2023)
      Conference lecture
      Open Access
      Multicore interference that arises when several accesses contend for the same shared hardware resources poses a challenge to the already demanding consolidated verification and validation practice. The Sequence-Aware Pairing ...