petsc-3.9.4 2018-09-11

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().

Keywords

Partitioning, destroy, context

Level

beginner

Location

src/mat/partition/partition.c

Examples

src/mat/examples/tutorials/ex15.c.html

Index of all MatOrderings routines
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Index of all manual pages