PETSc version 3.15.5
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
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
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Index of all manual pages