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4.3.2.4 Matrix-times-Vector multiplication.
All matrices are accumulated (type-I) but they have to
include additional entries to nodes in neighboring subdomains, i.e.,
those matrices are
![$ N_i \times \widetilde{N} \makebox[0pt]{}_i$](img477.gif)
rectangular matrices.
The appropriate components of the extended vector have to
be received previously to the multiplication.
The remaining operation runs fully in parallel.
Gundolf Haase
2000-03-20