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We report about parallel implementation on LCAP1 system and on CRAY2 supercomputer of a parallel algorithm based on a domain decomposition method with LaGrange multiplier, for solving an ill conditioned three dimensional composite structural analysis problem, with as many as one million degrees of freedom. We show that this method has very good features on both granularity and data dependency viewpoints.
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François‐Xavier Roux (1988) studied this question.