Bo-Chao Cheng, Alexander D Stoyenko , Thomas J Marlowe
{"title":"Least-space-time-first scheduling algorithm: A policy for complex real-time tasks in multiple processor systems","authors":"Bo-Chao Cheng, Alexander D Stoyenko , Thomas J Marlowe","doi":"10.1016/0066-4138(94)90007-8","DOIUrl":null,"url":null,"abstract":"<div><p>Significant prior work exists on scheduling for the ‘simple-tasks-single-processor’, ‘simple-tasks-multiple-processor’, and ‘complex-tasks-single-processor’, but few researchers have yet considered the ‘complex-tasks-multiple-processor’ model. We propose a new algorithm, Least Space-Time First (LSTF), to deal with the general ‘complex-task-multiple-processor’ model. We demonstrate that LSTF outperforms the Highest-Level-First, Earliest-Deadline-First and Least-Laxity-First scheduling disciplines in the sense of minimizing maximum tardiness of a set of tasks. LSTF can gracefully incorporate some realistic overhead assumptions, including context switch and communication. The Unit Precedence Graph and Soft-Precedence Edges significantly facilitate implementation of LSTF.</p></div>","PeriodicalId":100097,"journal":{"name":"Annual Review in Automatic Programming","volume":"18 ","pages":"Pages 33-38"},"PeriodicalIF":0.0000,"publicationDate":"1994-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0066-4138(94)90007-8","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Annual Review in Automatic Programming","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/0066413894900078","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
Abstract
Significant prior work exists on scheduling for the ‘simple-tasks-single-processor’, ‘simple-tasks-multiple-processor’, and ‘complex-tasks-single-processor’, but few researchers have yet considered the ‘complex-tasks-multiple-processor’ model. We propose a new algorithm, Least Space-Time First (LSTF), to deal with the general ‘complex-task-multiple-processor’ model. We demonstrate that LSTF outperforms the Highest-Level-First, Earliest-Deadline-First and Least-Laxity-First scheduling disciplines in the sense of minimizing maximum tardiness of a set of tasks. LSTF can gracefully incorporate some realistic overhead assumptions, including context switch and communication. The Unit Precedence Graph and Soft-Precedence Edges significantly facilitate implementation of LSTF.