petsc-3.5.1 2014-08-06
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PetscSFGetGraph

Get the graph specifying a parallel star forest

Synopsis

#include "petscsf.h" 
PetscErrorCode PetscSFGetGraph(PetscSF sf,PetscInt *nroots,PetscInt *nleaves,const PetscInt **ilocal,const PetscSFNode **iremote)
Not Collective

Input Arguments

sf -star forest

Output Arguments

nroots - number of root vertices on the current process (these are possible targets for other process to attach leaves)
nleaves - number of leaf vertices on the current process, each of these references a root on any process
ilocal - locations of leaves in leafdata buffers
iremote - remote locations of root vertices for each leaf on the current process

See Also

PetscSFCreate(), PetscSFView(), PetscSFSetGraph()

Level:intermediate
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/ts/examples/tutorials/ex11.c.html