petscmaster 20201124
PCHPDDMGetComplexities
Computes the grid and operator complexities.
Synopsis
#include "petscpc.h"
static PetscErrorCode PCHPDDMGetComplexities(PC pc, PetscReal *gc, PetscReal *oc)
Input Parameter
 pc   preconditioner context

Output Parameters
 gc   grid complexity = sum_i(m_i) / m_1

 oc   operator complexity = sum_i(nnz_i) / nnz_1

Notes
PCGAMG does not follow the usual convention and names the grid complexity what is usually referred to as the operator complexity. PCHPDDM follows what is found in the literature, and in particular, what you get with PCHYPRE and pc_hypre_boomeramg_print_statistics.
See Also
PCMGGetGridComplexity(), PCHPDDM
Level
advanced
Location
src/ksp/pc/impls/hpddm/hpddm.cxx
Index of all PC routines
Table of Contents for all manual pages
Index of all manual pages