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Parallel FFT on ATM-based networks of workstations

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2 Author(s)
Chalasani, S. ; Dept. of Electr. & Comput. Eng., Wisconsin Univ., Madison, WI, USA ; Ramanathan, P.

In this paper, we first evaluate the performance degradation caused by unequal bandwidths on the execution of conventional parallel algorithms such as the fast Fourier transform on an ATM-based Network of Workstations. We then present a strategy based on dynamic redistribution of data points to reduce the bottlenecks caused by unequal bandwidths. We also extend this strategy to deal with processor heterogeneity. Using analysis and simulation we show that there is a considerable reduction in the runtime if the proposed redistribution strategy is adopted. The basic idea presented in this paper can also be used to improve the runtimes of parallel applications in connection-oriented environments

Published in:

High Performance Distributed Computing, 1997. Proceedings. The Sixth IEEE International Symposium on

Date of Conference:

5-8 Aug 1997

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