Page migration with dynamic space-sharing scheduling policies: the case of the SGI 02000

Authors:
Julita Corbalan;Xavier Martorell;Jesus Labarta
Affiliations:
DAC-UPC, Jordi Girona, Barcelona;DAC-UPC, Jordi Girona, Barcelona;DAC-UPC, Jordi Girona, Barcelona
Venue:
International Journal of Parallel Programming - Special issue II: The 17th annual international conference on supercomputing (ICS'03)
Year:
2004

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Abstract

In this paper, we claim that memory migration mechanism is a useful approach to improve the execution of parallel applications in dynamic execution environments, but that their performance depends on related system components such as the processor scheduling. To show that, we evaluate the automatic memory migration mechanism provided by IRIX in Origin systems, under different dynamic processor allocation policies when executing OpenMP parallel multiprogrammed Workloads. We have focused the evaluation on the effects of the page migration mechanism on the CPU time consumed by each application, the processor allocation received, and the speedup. Results demonstrate that, if the processor scheduler is memory conscious, that is it maintains as much as possible the system stable, the automarie memory page migration mechanism provided by IRIX improves the CPU time consumed by OpenMP applications.