HAL will be down for maintenance from Friday, June 10 at 4pm through Monday, June 13 at 9am. More information
Skip to Main content Skip to Navigation

Preemptive scheduling with variable profile, precedence constraints and due dates

Abstract : This paper is concerned with the problem of scheduling preemptive tasks subject to precedence constraints in order to minimize the maximum lateness and the makespan. The number of available parallel processors is allowed to vary in time. It is shown that when an earliest due date first algorithm provides an optimal nonpreemptive schedule for unit execution time tasks, then the preemptive priority scheduling algorithm, referred to as smallest laxity first, provides an optimal preemptive schedule for real-execution-time tasks. When the objective is to minimize the makespan, we get the same kind of result between highest level first schedules solving nonpremptive tasks with unit execution time and the longest remaining path first schedule for the corresponding preemptive scheduling problem with real-execution-time tasks. These results are applied to four specific profile scheduling problems and new optimality results are obtained.
Document type :
Complete list of metadata

Contributor : Rapport de Recherche Inria Connect in order to contact the contributor
Submitted on : Wednesday, May 24, 2006 - 5:01:12 PM
Last modification on : Tuesday, March 29, 2022 - 1:24:03 PM
Long-term archiving on: : Tuesday, April 12, 2011 - 5:15:33 PM


  • HAL Id : inria-00074939, version 1


Zhen Liu, Eric Sanlaville. Preemptive scheduling with variable profile, precedence constraints and due dates. [Research Report] RR-1622, INRIA. 1992. ⟨inria-00074939⟩



Record views


Files downloads