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A Dynamic Load Balancing Tool for One and Two Dimensional Parallel Loops

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2 Author(s)
Carino, R.L. ; Center for Computational Sci., Mississippi State Univ. ; Banicescu, I.

This paper describes a dynamic load balancing tool intended for computational investigators who have little familiarity with programming for a message-passing environment. Motivated by the PAR DOALL directive available in some compilers for shared-memory systems, the tool is designed to simplify the manual conversion of sequential programs containing computationally intensive loops with independent iterates into parallel programs that execute with high efficiency on general-purpose clusters. The tool implements a dynamic loop scheduling strategy to address load imbalance which may be induced by the non-uniformity of loop iterate times, and by the heterogeneity of processors. The tool is based on the message passing interface library for wide availability. Timings of a nontrivial application that utilize the tool on a Linux cluster are presented to demonstrate sample achievable performance

Published in:

Parallel and Distributed Computing, 2006. ISPDC '06. The Fifth International Symposium on

Date of Conference:

6-9 July 2006

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