Now showing items 1-8 of 8

    • 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)
      External 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. ...
    • Enabling SMT for real-time embedded systems 

      Cazorla Almeida, Francisco Javier; Knijnenburg, Peter M.W.; Sakellariou, Rizos; Fernandez Prieto, Enrique; Ramírez Bellido, Alejandro; Valero Cortés, Mateo (Institute of Electrical and Electronics Engineers (IEEE), 2004)
      Conference report
      Open Access
      In order to deal with real time constraints, current embedded processors are usually simple in-order processors with no speculation capabilities to ensure that execution times of applications are predictable. However, ...
    • Evaluating scientific workflow execution on an asymmetric multicore processor 

      Pietri, Ilia; Zhuang, Sicong; Casas, Marc; Moreto Planas, Miquel; Sakellariou, Rizos (Springer, 2018-02)
      Conference lecture
      Open Access
      Asymmetric multicore architectures that integrate different types of cores are emerging as a potential solution for good performance and power efficiency. Although scheduling can be improved by utilizing an appropriate set ...
    • 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)
      Conference report
      Open Access
      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 ...
    • On the problem of minimizing workload execution time in SMT processors 

      Cazorla, Francisco; Knijnenburg, Peter M.W.; Sakellariou, Rizos; Fernandez Garcia, Enrique; Ramírez Bellido, Alejandro; Valero Cortés, Mateo (Institute of Electrical and Electronics Engineers (IEEE), 2007)
      Conference report
      Open Access
      Most research work on (simultaneous multithreading processors) SMTs focuses on improving throughput and/or fairness, or on prioritizing some threads over others in a workload. In this paper, we discuss a new problem not ...
    • Predictable performance in SMT processors: synergy between the OS and SMTs 

      Cazorla, Francisco; Knijnenburg, Peter M.W.; Sakellariou, Rizos; Fernandez Prieto, Enrique; Ramírez Bellido, Alejandro; Valero Cortés, Mateo (2006-07)
      Article
      Open Access
      Current operating systems (OS) perceive the different contexts of simultaneous multithreaded (SMT) processors as multiple independent processing units, although, in reality, threads executed in these units compete for the ...
    • QoS for high-performance SMT processors in embedded systems 

      Cazorla Almeida, Francisco Javier; Ramírez Bellido, Alejandro; Valero Cortés, Mateo; Knijnenburg, Peter M.W.; Sakellariou, Rizos; Fernández Garcia, Enrique (2004-07)
      Article
      Open Access
      Although simultaneous multithreading processors provide a good cost-performance tradeoff, they exhibit unpredictable performance in real-time applications. We present a resource management scheme that eliminates a major ...
    • Towards specification of a software architecture for cross-sectoral big data applications 

      Arapakis, Ioannis; Becerra Fontal, Yolanda; Boehm, Omer; Bravos, Geroge; Chatzigiannakis, Vassilis; Cugnasco, Cesare; Demetriou, Giorgos; Eleftheriou, Iliada; Mascolo, Julien Etienne; Fodor, Lidija; Ioannidis, Sotiris; Jakovetic, Dusan; Kallipolitis, Leonidas; Kavakli, Evangelia; Kopanaki, Despina; Kourtellis, Nicolas; Marcos, Mario Maawad; Martin de Pozuelo, Ramon; Milosevic, Nemanja; Morandi, Giuditta; Pages Montanera, Enric; Ristow, Gerald; Sakellariou, Rizos; Sirvent, Raül; Skrbic, Srdjan; Spais, Ilias; Vasiliadis, Giorgos; Vinov, Michael (Institute of Electrical and Electronics Engineers (IEEE), 2019)
      Conference lecture
      Open Access
      The proliferation of Big Data applications puts pressure on improving and optimizing the handling of diverse datasets across different domains. Among several challenges, major difficulties arise in data-sensitive domains ...