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How to share a bag of tasks optimally in a heterogeneous cluster - three models, three answers

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1 Author(s)
Rosenberg, A.L. ; Massachusetts Univ., Amherst, MA, USA

Summary form only given. In the world of sequential computers, the abstract RAM model enables one to design provably efficient algorithms for a broad range of actual architectures and a broad range of workloads. In the world of multiprocessors, the abstract BSP model serves a similar function. No analogue of the RAM and BSP models is known for modern computing platforms such as clusters of workstations - especially heterogeneous ones, whose constituent workstations may differ in computational power - and the various modalities of Internet-based computing. In this talk, we present circumstantial evidence that no such single algorithmic model can exist for heterogeneous clusters. We describe three quite similar computational problems related to computing a large collection of mutually independent tasks on a cluster. (Two of the problems can be shown formally to be equivalent.) Despite their similarities, the three problems require drastically different algorithmic approaches if one wants provably optimal solutions.

Published in:

Simulation Symposium, 2004. Proceedings. 37th Annual

Date of Conference:

18-22 April 2004

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