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 on ISLocalToGlobalMapping
Input Parameter#
mapping - the mapping from local to global indexing
Output Parameters#
nproc - number of processors that are connected to this one
proc - neighboring processors
numproc - number of indices for each subdomain (processor)
indices - indices of nodes (in local numbering) shared with neighbors (sorted by global numbering)
Notes: The user needs to call ISLocalToGlobalMappingRestoreInfo when the data is no longer needed.
Fortran Usage#
ISLocalToGlobalMpngGetInfoSize(ISLocalToGlobalMapping,PetscInt nproc,PetscInt numprocmax,ierr) followed by
ISLocalToGlobalMappingGetInfo(ISLocalToGlobalMapping,PetscInt nproc, PetscInt procs[nproc],PetscInt numprocs[nproc],
PetscInt indices[nproc][numprocmax],ierr) 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.
See Also#
ISLocalToGlobalMappingDestroy()
, ISLocalToGlobalMappingCreateIS()
, ISLocalToGlobalMappingCreate()
,
ISLocalToGlobalMappingRestoreInfo()
Level#
advanced
Location#
Index of all IS routines
Table of Contents for all manual pages
Index of all manual pages