petsc-3.11.4 2019-09-28
ISAllGatherColors
Given a a set of colors on each processor, generates a large set (same on each processor) by concatenating together each processors colors
Synopsis
#include "petscis.h"
PetscErrorCode ISAllGatherColors(MPI_Comm comm,PetscInt n,ISColoringValue *lindices,PetscInt *outN,ISColoringValue *outindices[])
Collective on MPI_Comm
Input Parameter
| comm | - communicator to share the indices
|
| n | - local size of set
|
| lindices | - local colors
|
Output Parameter
| outN | - total number of indices
|
| outindices | - all of the colors
|
Notes
ISAllGatherColors() is clearly not scalable for large index sets.
See Also
ISCreateGeneral(), ISCreateStride(), ISCreateBlock(), ISAllGather()
Level
intermediate
Location
src/vec/is/is/utils/iscoloring.c
Index of all IS routines
Table of Contents for all manual pages
Index of all manual pages