1 #if !defined(__DEFLATION_H) 2 #define __DEFLATION_H 3 4 #include <petsc/private/pcimpl.h> /*I "petscpc.h" I*/ 5 6 typedef struct { 7 PetscBool init; /* do only init step - error correction of direction is omitted */ 8 PetscBool pre; /* start with x0 being the solution in the deflation space */ 9 PetscBool correct; /* add CP (Qr) correction to descent direction */ 10 PetscBool truenorm; 11 PetscBool adaptiveconv; 12 PetscReal adaptiveconst; 13 PetscInt reductionfact; 14 Mat W,Wt,AW,WtAW; /* deflation space, coarse problem mats */ 15 KSP WtAWinv; /* deflation coarse problem */ 16 KSPType ksptype; 17 PC pc; /* additional preconditioner */ 18 Vec work; 19 Vec *workcoarse; 20 21 PCDeflationSpaceType spacetype; 22 PetscInt spacesize; 23 PetscInt nestedlvl; 24 PetscInt maxnestedlvl; 25 PetscBool extendsp; 26 } PC_Deflation; 27 28 PETSC_INTERN PetscErrorCode PCDeflationComputeSpace(PC); 29 30 #endif 31 32