Multicore processors are now considered as relevant candidates for the next generation of Integrated Modular Avionics (IMA) systems. One expected benefit of multicore introduction inside IMA platforms is an increase of the number of avionic applications hosted on a single platform. This can be achieved by deploying several ARINC 653 partitions simultaneously on different cores. However to be certifiable, such an architecture must fulfill many dependability requirements. In this paper we focus on the problem of Worst Case Execution Time (WCET) computation of embedded partitions under the Robust Partitioning constraint. Today's multicore processors internal features make those requirements fulfillment difficult to ensure on the platform for any set of hosted partitions. That comes from the difficulty to characterize with a satisfying confidence the processor behavior when several unknown applications use simultaneously shared hardware resources, such as the main memory. We present in this paper a generic software solution that constrains the use of shared resources to remain inside predefined usage domains for which the processor has a deterministic behavior. We illustrate this approach with a case study based on a COTS processor from the Freescale QorIQ series.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    A software approach for managing shared resources in multicore IMA systems


    Contributors:


    Publication date :

    2013-10-01


    Size :

    955457 byte





    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



    A software approach for managing shared resources in multicore IMA systems

    Jean, Xavier / Gatti, Marc / Faura, David et al. | IEEE | 2013

    Free access

    Safety Effect of Shared Resources in Multicore Processors

    Boettcher, Carolyn / Eisner, Thomas | AIAA | 2011


    Safety Effect of Shared Resources in Multicore Processors

    Boettcher, C. / Eisner, T. / American Institute of Aeronautics and Astronautics | British Library Conference Proceedings | 2011


    Interference Analysis of Multicore Shared Resources with a Commercial Avionics RTOS

    Park, Sihyeong / Song, Daeyoung / Jang, Hyeoksoo et al. | IEEE | 2019