ISLocalToGlobalMappingGetNodeInfo#
Gets the neighbor information for each MPI rank
Synopsis#
#include "petscis.h"
PetscErrorCode ISLocalToGlobalMappingGetNodeInfo(ISLocalToGlobalMapping mapping, PetscInt *nnodes, PetscInt *count[], PetscInt **indices[])
Collective
Input Parameter#
mapping - the mapping from local to global indexing
Output Parameters#
nnodes - number of local nodes (same
ISLocalToGlobalMappingGetSize())count - number of neighboring processors per node
indices - indices of processes sharing the node (sorted)
Note#
The user needs to call ISLocalToGlobalMappingRestoreInfo() when the data is no longer needed.
See Also#
Low-level Vector Communication, ISLocalToGlobalMappingDestroy(), ISLocalToGlobalMappingCreateIS(), ISLocalToGlobalMappingCreate(),
ISLocalToGlobalMappingGetInfo(), ISLocalToGlobalMappingRestoreNodeInfo()
Level#
advanced
Location#
Index of all IS routines
Table of Contents for all manual pages
Index of all manual pages