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Parallel algorithm and architectures for two-step division-free Gaussian elimination

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2 Author(s)
Peng, S. ; Aizu Univ., Fukushima, Japan ; Sedukhin, S.

The design of optimal array processors for solving linear systems using two-step division-free Gaussian elimination method is considered. The two-step method circumvents the one-step one in terms of numerical stability. In spite of the rather complicated computations needed at each iteration of the two-step method, we develop an innovative parallel algorithm whose data dependency graph meets the requirements for regularity and locality. Then we derive two-dimensional array processors by adopting a systematic approach to investigate the set of all admissible solutions and obtain the optimal array processors under linear time-space scheduling. The array processors is optimal in terms of the number of processing elements used

Published in:

Algorithms and Architectures for Parallel Processing, 1997. ICAPP 97., 1997 3rd International Conference on

Date of Conference:

10-12 Dec 1997

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