Implementing MPI under AP/Linux

Author

Sitsky, David ; Mackerras, Paul ; Tridgell, Andrew ; Walsh, David

Author_Institution

CAP Res. Program, Australian Nat. Univ., Canberra, ACT, Australia

fYear

1996

fDate

1-2 Jul 1996

Firstpage

32

Lastpage

39

Abstract

A preliminary MPI library has been implemented for the Fujitsu AP1000+ multicomputer running the AP/Linux operating system. Under this environment, parallel programs may be dedicated to a fixed partition, or a number of parallel programs may share a partition. Therefore, the MPI library has been constructed so that messaging operations can be driven by polling and/or interrupt techniques. It has been found that polling works well when a single parallel program is running on a given partition, and that interrupt-driven communication makes far better use of the machine when multiple parallel programs are executing. Gang scheduling of multiple parallel programs which use polling was found to be relatively ineffective

Keywords

application program interfaces; distributed memory systems; interrupts; message passing; operating systems (computers); parallel programming; processor scheduling; software libraries; utility programs; AP/Linux operating system; Fujitsu AP1000+ multicomputer; MPI library; gang scheduling; interrupt techniques; interrupt-driven communication; messaging operations; multiple parallel programs; parallel programs; partition; polling; Australia; Bandwidth; Broadcasting; Control systems; Kernel; Libraries; Linux; Message passing; Operating systems; Writing;

fLanguage

English

Publisher

ieee

Conference_Titel

MPI Developer's Conference, 1996. Proceedings., Second

Conference_Location

Notre Dame, IN

Print_ISBN

0-8186-7533-0

Type

conf

DOI

10.1109/MPIDC.1996.534092

Filename

534092