1 #pragma once 2 3 #include <petsc/private/pcimpl.h> /*I "petscpc.h" I*/ 4 #include <petscksp.h> 5 6 typedef struct { 7 PetscBool init; /* do only init step - error correction of direction is omitted */ 8 PetscBool correct; /* add CP (Qr) correction to descent direction */ 9 PetscScalar correctfact; 10 PetscInt reductionfact; 11 Mat W, Wt, WtA, WtAW; /* deflation space, coarse problem mats */ 12 KSP WtAWinv; /* deflation coarse problem */ 13 KSPType ksptype; 14 PC pc; /* additional preconditioner */ 15 Vec work; 16 Vec *workcoarse; 17 const char *prefix; 18 19 PCDeflationSpaceType spacetype; 20 PetscInt spacesize; 21 PetscInt lvl; 22 PetscInt maxlvl; 23 PetscBool extendsp; 24 } PC_Deflation; 25 26 PETSC_INTERN PetscErrorCode PCDeflationComputeSpace(PC); 27