5 Communication routines

The routines in this chapter implement various global communication operators on vectors associated with a discretization mesh. For auxiliary communication routines not tied to a discretization space see 6.

 5.1 psb_halo — Halo Data Communication
 5.2 psb_ovrl — Overlap Update
 5.3 psb_gather — Gather Global Dense Matrix
 5.4 psb_scatter — Scatter Global Dense Matrix