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Dynamic Processor Allocation in Large Mesh-Connected Multicomputers

César A. F. De RoseContact Information and Hans-Ulrich HeissContact Information

(6)  Computer Science Department, Catholic University of Rio Grande do Sul, 90619-900 Porto Alegre, Brazil
(7)  Department of Computer Science, University of Paderborn, 33098 Paderborn, Germany
Abstract
Current processor allocation techniques for highly parallel systems are based on centralized front-end based algorithms. As a result, the applied strategies are restricted to static allocation, low parallelism and weak fault tolerance. To lift these restrictions we are investigating a distributed approach to the processor allocation problem in large mesh-connected multicomputers. A noncontiguous version of a distributed dynamic processor allocation strategy is proposed and studied in this paper as an alternative for parallel programming models that allow dynamic creation and deletion of tasks. Simulations compare the performance of the proposed dynamic strategy with the static counterpart and also with well-known centralized algorithms in such an environment with growing and shrinking processor demands. We also present the results of experiments on a Siemens hpcLine Primergy Server with 96 nodes that show dynamic allocation is feasible with current technologies.
This research was supported in part by HP-Brazil and Fapergs.

Contact Information César A. F. De Rose
Email: derose@inf.pucrs.br

Contact Information Hans-Ulrich Heiss
Email: heiss@upd.de
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