License: Creative Commons Attribution 3.0 Germany license (CC BY 3.0 DE)
When quoting this document, please refer to the following
DOI: 10.4230/DARTS.5.1.2
URN: urn:nbn:de:0030-drops-107306
URL: http://dagstuhl.sunsite.rwth-aachen.de/volltexte/2019/10730/
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Tessler, Corey ; Fisher, Nathan

NPM-BUNDLE: Non-Preemptive Multitask Scheduling for Jobs with BUNDLE-Based Thread-Level Scheduling (Artifact)

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DARTS-5-1-2.pdf (0.3 MB)

Abstract

The BUNDLE and BUNDLEP scheduling algorithms are cache-cognizant thread-level scheduling algorithms and associated worst case execution time and cache overhead (WCETO) techniques for hard real-time multi-threaded tasks. The BUNDLE-based approaches utilize the inter-thread cache benefit to reduce WCETO values for jobs. Currently, the BUNDLE-based approaches are limited to scheduling a single task. This work aims to expand the applicability of BUNDLE-based scheduling to multiple task multi-threaded task sets.
BUNDLE-based scheduling leverages knowledge of potential cache conflicts to selectively preempt one thread in favor of another from the same job. This thread-level preemption is a requirement for the run-time behavior and WCETO calculation to receive the benefit of BUNDLE-based approaches. This work proposes scheduling BUNDLE-based jobs non-preemptively according to the earliest deadline first (EDF) policy. Jobs are forbidden from preempting one another, while threads within a job are allowed to preempt other threads.
An accompanying schedulability test is provided, named Threads Per Job (TPJ). TPJ is a novel schedulability test, input is a task set specification which may be transformed (under certain restrictions); dividing threads among tasks in an effort to find a feasible task set. Enhanced by the flexibility to transform task sets and taking advantage of the inter-thread cache benefit, the evaluation shows TPJ scheduling task sets fully preemptive EDF cannot.

BibTeX - Entry

@Article{tessler_et_al:DARTS:2019:10730,
  author =	{Corey Tessler and Nathan Fisher},
  title =	{{NPM-BUNDLE: Non-Preemptive Multitask Scheduling for Jobs with BUNDLE-Based Thread-Level Scheduling (Artifact)}},
  pages =	{2:1--2:2},
  journal =	{Dagstuhl Artifacts Series},
  ISSN =	{2509-8195},
  year =	{2019},
  volume =	{5},
  number =	{1},
  publisher =	{Schloss Dagstuhl--Leibniz-Zentrum fuer Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{http://drops.dagstuhl.de/opus/volltexte/2019/10730},
  URN =		{urn:nbn:de:0030-drops-107306},
  doi =		{10.4230/DARTS.5.1.2},
  annote =	{Keywords: Scheduling algorithms, Cache Memory, Multi-threading, Static Analysis}
}

Keywords: Scheduling algorithms, Cache Memory, Multi-threading, Static Analysis
Collection: Special Issue of the 31st Euromicro Conference on Real-Time Systems (ECRTS 2019)
Related Scholarly Article: https://dx.doi.org/10.4230/LIPIcs.ECRTS.2019.15
Issue Date: 2019
Date of publication: 08.07.2019

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