#include "petscpc.h" #include "petscksp.h" PetscErrorCode PCGAMGSetThresholdScale(PC pc, PetscReal v)Not collective on PC
| pc | - the preconditioner context | |
| scale | - the threshold value reduction, usually < 1.0 |
| -pc_gamg_threshold_scale <v> | - set the relative threshold reduction on each level |