MatPartitioningSetPartitionWeights

Sets the weights for each partition.

Synopsis

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

Logically Collective

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.

Note

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().

Fortran Note

The array weights is copied during this function call.

See Also

Matrices, Mat, MatPartitioning, MatPartitioningSetVertexWeights(), MatPartitioningCreate(), MatPartitioningSetType()

Level

beginner

Location

src/mat/graphops/partition/partition.c

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Index of all MatGraphOperations routines
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