PCMGGetGridComplexity#
compute operator and grid complexity of the PCMG hierarchy
Synopsis#
#include "petscksp.h"
PetscErrorCode PCMGGetGridComplexity(PC pc, PetscReal *gc, PetscReal *oc)
Input Parameter#
pc - the preconditioner context
Output Parameters#
gc - grid complexity, \(\frac{\sum_i n_i}{n_0}\), where \(n_0\) is the number of unknowns on the finest grid
oc - operator complexity, \(\frac{\sum_i nnz_i}{nnz_0}\), where \(nnz_0\) is the number of nonzeros on the finest grid
See Also#
KSP: Linear System Solvers, PCMG, PCMGGetLevels(), PCMGSetLevels()
Level#
advanced
Location#
Index of all PC routines
Table of Contents for all manual pages
Index of all manual pages