PETSc version 3.17.4
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# MatSTRUMPACKSetReordering

Set STRUMPACK fill-reducing reordering

### Synopsis

    #include "petscmat.h"
    PetscErrorCode MatSTRUMPACKSetReordering(Mat F,MatSTRUMPACKReordering reordering)

### Input Parameters

| F | - the factored matrix obtained by calling MatGetFactor() from PETSc-STRUMPACK interface
| reordering | - the code to be used to find the fill-reducing reordering Possible values: NATURAL=0 METIS=1 PARMETIS=2 SCOTCH=3 PTSCOTCH=4 RCM=5

### Options Database

| -mat_strumpack_reordering <METIS> | - Sparsity reducing matrix reordering (choose one of) NATURAL METIS PARMETIS SCOTCH PTSCOTCH RCM (None)

### References

| * | - STRUMPACK manual

### See Also

MatGetFactor()

### Level

beginner

### Location

src/mat/impls/aij/mpi/strumpack/strumpack.c

### Examples

src/ksp/ksp/tutorials/ex52.c.html

### Implementations

MatSTRUMPACKSetReordering_STRUMPACK in src/mat/impls/aij/mpi/strumpack/strumpack.c
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