ISLocalToGlobalMappingGetNodeInfo#
Gets the neighbor information of local nodes
Synopsis#
#include "petscis.h"
PetscErrorCode ISLocalToGlobalMappingGetNodeInfo(ISLocalToGlobalMapping mapping, PetscInt *n, PetscInt *n_procs[], PetscInt **procs[])
Collective the first time it is called
Input Parameter#
mapping - the mapping from local to global indexing
Output Parameters#
n - number of local nodes
n_procs - an array storing the number of processes for each local node (including self)
procs - the processes’ rank for each local node (sorted, self is first)
Note#
The user needs to call ISLocalToGlobalMappingRestoreNodeInfo() when the data is no longer needed.
See Also#
Low-level Vector Communication, ISLocalToGlobalMappingDestroy(), ISLocalToGlobalMappingCreateIS(), ISLocalToGlobalMappingCreate(),
ISLocalToGlobalMappingGetInfo(), ISLocalToGlobalMappingRestoreNodeInfo(), ISLocalToGlobalMappingGetBlockNodeInfo()
Level#
advanced
Location#
Index of all IS routines
Table of Contents for all manual pages
Index of all manual pages