Szukana fraza: [Abstract = We identify the various bottlenecks induced by the middleware and the iterative algorithm. We consider thestandard CG algorithm of Hestenes and Stiefel, and as an alternative the Chronopoulos\/Gear variant, a formulation thatis potentially better suited for grid computing since it requires only one synchronisation point per iteration, instead oftwo for standard CG. In addition, we improve the computation\-to\-communication ratio by maximising the work in thepreconditioner.]

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