petsc-3.13.6 2020-09-29
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MatPartitioningApplyND

 Gets a nested dissection partitioning for a matrix.

Synopsis

#include "petscmat.h" 
PetscErrorCode  MatPartitioningApplyND(MatPartitioning matp,IS *partitioning)
Collective on Mat

Input Parameters

matp -the matrix partitioning object

Output Parameters

partitioning -the partitioning. For each local node, a positive value indicates the processor number the node has been assigned to. Negative x values indicate the separator level -(x+1).

The user can define additional partitionings; see MatPartitioningRegister().

See Also

MatPartitioningRegister(), MatPartitioningCreate(),
MatPartitioningDestroy(), MatPartitioningSetAdjacency(), ISPartitioningToNumbering(), ISPartitioningCount()

Level

beginner

Location

src/mat/partition/partition.c

Implementations

MatPartitioningApplyND_Parmetis in src/mat/partition/impls/pmetis/pmetis.c
MatPartitioningApplyND_PTScotch in src/mat/partition/impls/scotch/scotch.c

Index of all MatOrderings routines
Table of Contents for all manual pages
Index of all manual pages