petsc-master 2019-08-15
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ISLocalToGlobalMappingGetNodeInfo

Gets the neighbor information for each node

Synopsis

#include "petscis.h"  
PetscErrorCode  ISLocalToGlobalMappingGetNodeInfo(ISLocalToGlobalMapping mapping,PetscInt *nnodes,PetscInt *count[],PetscInt **indices[])
Collective on ISLocalToGlobalMapping

Input Parameters

mapping -the mapping from local to global indexing

Output Parameter

nnodes - number of local nodes (same ISLocalToGlobalMappingGetSize())
count - number of neighboring processors per node
indices - indices of processes sharing the node (sorted)

Notes: The user needs to call ISLocalToGlobalMappingRestoreInfo when the data is no longer needed.

See Also

ISLocalToGlobalMappingDestroy(), ISLocalToGlobalMappingCreateIS(), ISLocalToGlobalMappingCreate(),
ISLocalToGlobalMappingGetInfo(), ISLocalToGlobalMappingRestoreNodeInfo()

Level

advanced

Location

src/vec/is/utils/isltog.c
Index of all IS routines
Table of Contents for all manual pages
Index of all manual pages