petsc-3.11.4 2019-09-28

MatPartitioningSetFromOptions

Sets various partitioning options from the options database.

Synopsis

#include "petscmat.h" 
PetscErrorCode  MatPartitioningSetFromOptions(MatPartitioning part)

Collective on MatPartitioning

Input Parameter

part -the partitioning context.

Options Database Command

 -mat_partitioning_type  <type>

     Use -help for a list of available methods

     (for instance, parmetis)

 -mat_partitioning_nparts - number of subgraphs

Notes

If the partitioner has not been set by the user it uses one of the installed partitioner such as ParMetis. If there are no installed partitioners it uses current which means no repartioning.

Keywords

partitioning, set, method, type

Level

beginner