petsc-3.13.6 2020-09-29
PetscSFGetLeafRanks
Get leaf ranks referencing roots on this process
Synopsis
#include "petscsf.h"
PetscErrorCode PetscSFGetLeafRanks(PetscSF sf,PetscInt *niranks,const PetscMPIInt **iranks,const PetscInt **ioffset,const PetscInt **irootloc)
Not Collective
Input Arguments
sf -star forest
Output Arguments
| niranks | - number of leaf ranks referencing roots on this process
|
| iranks | - array of ranks
|
| ioffset | - offset in irootloc for each rank (length niranks+1)
|
| irootloc | - concatenated array holding local indices of roots referenced by each leaf rank
|
See Also
PetscSFGetRootRanks()
Level
developer
Location
src/vec/is/sf/interface/sf.c
Implementations
PetscSFGetLeafRanks_Allgatherv in src/vec/is/sf/impls/basic/allgatherv/sfallgatherv.c
PetscSFGetLeafRanks_Basic in src/vec/is/sf/impls/basic/sfbasic.c
Index of all PetscSF routines
Table of Contents for all manual pages
Index of all manual pages