ISLocalToGlobalMappingGetInfo#
Gets the neighbor information for each processor and each index shared by more than one processor
Synopsis#
#include "petscis.h"
PetscErrorCode ISLocalToGlobalMappingGetInfo(ISLocalToGlobalMapping mapping, PetscInt *nproc, PetscInt *procs[], PetscInt *numprocs[], PetscInt **indices[])
Collective
Input Parameter#
mapping - the mapping from local to global indexing
Output Parameters#
nproc - number of processors that are connected to this one
procs - neighboring processors
numprocs - number of indices for each subdomain (processor)
indices - indices of nodes (in local numbering) shared with neighbors (sorted by global numbering)
Note#
The user needs to call ISLocalToGlobalMappingRestoreInfo()
when the data is no longer needed.
Fortran Notes#
There is no ISLocalToGlobalMappingRestoreInfo()
in Fortran. You must make sure that
procs
[], numprocs
[] and indices
[][] are large enough arrays, either by allocating them
dynamically or defining static ones large enough.
PetscInt indices[nproc][numprocmax],ierr)
ISLocalToGlobalMpngGetInfoSize(ISLocalToGlobalMapping,PetscInt nproc,PetscInt numprocmax,ierr) followed by
ISLocalToGlobalMappingGetInfo(ISLocalToGlobalMapping,PetscInt nproc, PetscInt procs[nproc],PetscInt numprocs[nproc],
See Also#
Low-level Vector Communication, ISLocalToGlobalMappingDestroy()
, ISLocalToGlobalMappingCreateIS()
, ISLocalToGlobalMappingCreate()
,
ISLocalToGlobalMappingRestoreInfo()
Level#
advanced
Location#
Index of all IS routines
Table of Contents for all manual pages
Index of all manual pages