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 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 18 PCDeflationSpaceType spacetype; 19 PetscInt spacesize; 20 PetscInt nestedlvl; 21 PetscInt maxnestedlvl; 22 PetscBool extendsp; 23 } PC_Deflation; 24 25 PETSC_INTERN PetscErrorCode PCDeflationComputeSpace(PC); 26 27 #endif 28 29