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FLB: Fast Load Balancing for distributed-memory machines

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2 Author(s)
Radulescu, A. ; Fac. of Inf. Technol. & Syst., Delft Univ. of Technol., Netherlands ; van Gemund, A.J.C.

This paper describes a novel compile-time list-based task scheduling algorithm for distributed-memory systems, called Fast Load Balancing (FLB). Compared to other typical list scheduling heuristics, FLB drastically reduces scheduling time complexity to O(V(log(W)+log (P))+E), where V and E are the number of tasks and edges in the task graph, respectively, W is the task graph width and P is the number of processors. It is proven that FLB is essentially equivalent to the existing ETF scheduling algorithm of O(W(E+V)P) time complexity. Experiments also show that FLB performs equally to other one-step algorithms of much higher cost, such as MCP. Moreover, FLB consistently outperforms multi-step algorithms such as DSC-LLB that also have higher cost

Published in:

Parallel Processing, 1999. Proceedings. 1999 International Conference on

Date of Conference:

1999

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