petsc-dev 2014-07-25
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PetscSFCreateEmbeddedSF

removes edges from all but the selected roots, does not remap indices

Synopsis

#include "petscsf.h" 
PetscErrorCode PetscSFCreateEmbeddedSF(PetscSF sf,PetscInt nroots,const PetscInt *selected,PetscSF *newsf)
Collective

Input Arguments

sf - original star forest
nroots - number of roots to select on this process
selected - selected roots on this process

Output Arguments

newsf -new star forest

Note

To use the new PetscSF, it may be necessary to know the indices of the leaves that are still participating. This can be done by calling PetscSFGetGraph().

See Also

PetscSFSetGraph(), PetscSFGetGraph()

Level:advanced
Location:
src/vec/is/sf/interface/sf.c
Index of all PetscSF routines
Table of Contents for all manual pages
Index of all manual pages

Examples

src/vec/is/sf/examples/tutorials/ex1.c.html