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Optimal GEDF-based schedulers that allow intra-task parallelism on heterogeneous multiprocessors

机译:基于GEDF的基于GEDF的调度器,允许在异构多处理器上允许任务内的并行性

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A variant of the conventional sporadic task model is considered wherein successive invocations of the same task do not have to execute in precedence order. This model is motivated by stream-processing applications where successive data items can be processed independently. The considered hardware platform is assumed to be a heterogeneous multiprocessor with processors of different speeds. Such platforms can be utilized in embedded applications to enable performance guarantees to be made with acceptable energy costs. The main contribution of this paper is to show that preemptive and non-preemptive variants of the global earliest-deadline-first scheduler are optimal with respect to ensuring bounded response times under the considered task model and hardware platform. An experimental evaluation of both variants is presented as well.
机译:考虑传统散发任务模型的变型,其中相同任务的连续调用不必以优先顺序执行。 该模型是通过独立处理连续数据项的流处理应用程序的激励。 假设所考虑的硬件平台是具有不同速度处理器的异构多处理器。 这些平台可以在嵌入式应用中使用,以实现以可接受的能源成本进行性能保证。 本文的主要贡献是表示全球最早截止日期 - 第一个调度器的抢占和非先发制人变体是在考虑的任务模型和硬件平台下确保有界响应时间的最佳选择。 还提出了两种变体的实验评价。

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