petsc-3.13.6 2020-09-29

MatOrderingRegister

Adds a new sparse matrix ordering to the matrix package.

#include "petscmat.h" 
PetscErrorCode  MatOrderingRegister(const char sname[],PetscErrorCode (*function)(Mat,MatOrderingType,IS*,IS*))

Not Collective

	sname	- name of ordering (for example MATORDERINGND)
	function	- function pointer that creates the ordering

   MatOrderingRegister("my_order", MyOrder);

Then, your partitioner can be chosen with the procedural interface via

    MatOrderingSetType(part,"my_order)

or at runtime via the option

    -pc_factor_mat_ordering_type my_order

developer