Implementing MPI under AP/Linux

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 con...

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Bibliographic Details
Main Authors: Sitsky, D., Mackerras, P., Tridgell, A., Walsh, D.
Format: Conference Proceeding
Language:English
Subjects:
Australia
Bandwidth
Broadcasting
Control systems
Kernel
Libraries
Linux
Message passing
Operating systems
Writing
Online Access:Request full text
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Summary: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.
DOI:10.1109/MPIDC.1996.534092