Intercluster activity: Design for Predictability and Performance

Important architectural considerations occur on many levels in a system hierarchy. As a general rule, static allocation of resources leads to predictable systems, whereas dynamic allocation makes predictability difficult.

  • High-Level Objectives 

    Embedded systems in many application domains are required to satisfy strict requirements on timing, while respecting limited supply of resources in terms of memory, processing power, power consumption, etc. All systems also have increasing demands on (average) performance, which has motivated the introduction of efficiency-increasing features which drastically increase variability and decrease predictability and analyzability.

  • Brief State of the Art 

    Compiler-directed memory management using scratchpad memory, originally developed to decrease energy consumption, also increases time predictability. Reactive processors are also promising because they allow the direct predictable execution of synchronous languages (Esterel), thanks to the direct support of the multi-threading and of the synchronization between threads. Analysis of scheduling policies has been well-researched for single processor systems, but is still not a resolve task for multicore platforms.

  • Core participants 

    Core participants in the intercluster activity: "Design for Predictability and Performance".

  • Affiliated Partners 

    Affiliated Partners in the intercluster activity: "Design for Predictability and Performance".

  • Main Research Trends  

    Predictability can be regarded as an effect of choosing suitable hardware and software architectures (in a wide sense) that lead to systems whose worst-case behaviour is easy to predict, and of utilizing analysis techniques that are able to provide these guarantees for the chosen system architecture. Important architectural considerations occur on many levels in a system hierarchy. As a general rule, static allocation of resources leads to predictable systems, whereas dynamic allocation makes predictability difficult.

  • Industrial Sectors Impacted 

    Predictability is an important system requirement in all sectors of embedded systems, whose operation should not fail for different reasons. An obvious sector is that of safety-critical systems, which arise in transportation, power automation, medical systems, and related areas.

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