PETSc version 3.17.4
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ISLocalToGlobalMappingCreateSF

Creates a mapping between a local (0 to n) ordering and a global parallel ordering.

Synopsis

#include "petscis.h"  
PetscErrorCode ISLocalToGlobalMappingCreateSF(PetscSF sf,PetscInt start,ISLocalToGlobalMapping *mapping)
Collective

Input Parameters

sf - star forest mapping contiguous local indices to (rank, offset)
start - first global index on this process, or PETSC_DECIDE to compute contiguous global numbering automatically

Output Parameter

mapping - new mapping data structure

Notes

If any processor calls this with start = PETSC_DECIDE then all processors must, otherwise the program will hang.

See Also

ISLocalToGlobalMappingDestroy(), ISLocalToGlobalMappingCreate(), ISLocalToGlobalMappingCreateIS(), ISLocalToGlobalMappingSetFromOptions()

Level

advanced

Location

src/vec/is/utils/isltog.c
Index of all IS routines
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