petsc-3.14.6 2021-03-30

MatPartitioningSetPartitionWeights

Sets the weights for each partition.

Synopsis

#include "petscmat.h" 
PetscErrorCode  MatPartitioningSetPartitionWeights(MatPartitioning part,const PetscReal weights[])

Logically Collective on Partitioning

Input Parameters

	part	- the partitioning context
	weights	- An array of size nparts that is used to specify the fraction of vertex weight that should be distributed to each sub-domain for the balance constraint. If all of the sub-domains are to be of the same size, then each of the nparts elements should be set to a value of 1/nparts. Note that the sum of all of the weights should be one.

Notes

The array weights is freed by PETSc so the user should not free the array. In C/C++ the array must be obtained with a call to PetscMalloc(), not malloc().

Level

beginner

Location