Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.22/3710
Título: An analysis of the impact of bus contention on the WCET in multicores
Autor: Dasari, Dakshina
Nélis, Vincent
Data: 2012
Editora: IEEE
Relatório da Série N.º: High Performance Computing and Communication;
Resumo: The use of multicores is becoming widespread inthe field of embedded systems, many of which have real-time requirements. Hence, ensuring that real-time applications meet their timing constraints is a pre-requisite before deploying them on these systems. This necessitates the consideration of the impact of the contention due to shared lowlevel hardware resources like the front-side bus (FSB) on the Worst-CaseExecution Time (WCET) of the tasks. Towards this aim, this paper proposes a method to determine an upper bound on the number of bus requests that tasks executing on a core can generate in a given time interval. We show that our method yields tighter upper bounds in comparison with the state of-the-art. We then apply our method to compute the extra contention delay incurred by tasks, when they are co-scheduled on different cores and access the shared main memory, using a shared bus, access to which is granted using a round-robin arbitration (RR) protocol.
Peer review: yes
URI: http://hdl.handle.net/10400.22/3710
ISBN: 978-1-4673-2164-8
Versão do Editor: http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=6332348
Aparece nas colecções:ISEP – CISTER – Comunicações em eventos científicos

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