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4.3.2.3 Inner product.

Because of the disjoint stored vectors, only the global sum (ALLREDUCE) of one scalar requires communication.

$\displaystyle (\underline{{\ensuremath{\color{red}\mathfrak{w}}}},\underline{{\... ...or{red}\mathfrak{w}}}}_i,\underline{{\ensuremath{\color{red}\mathfrak{r}}}}_i) $


Gundolf Haase 2000-03-20