petsc-3.13.6 2020-09-29

MatSTRUMPACKSetReordering

Set STRUMPACK fill-reducing reordering

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

	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

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

STRUMPACK manual -

beginner