Performance considerations in the parallel execution of numerical algorithms on two processors

Summary Loosely coupled multiprocessor systems seem to offer an interesting alternative to the solution of large numerical problems. It is in the context of such an investigation that we treat here a special parallel-processing case concerning the solution of a numerical problem on two independent processors including simultaneous input-output operations. We present a short discussion of the underlying numerical algorithm, a modelling approach to the parallel computing system and a comparison of the theoretically obtained results with simulation and experimental results. The experimental setting is the XANTHOS multi-microprocessor system implemented at the Laboratoire de Recherche en Informatique, Université de Paris-Sud.This work was supported by a DGRST Research Scholarship at Université Paris-Sud