KSP#

Abstract PETSc object that manages all Krylov methods. This is the object that manages the linear solves in PETSc (even those such as direct factorization-based solvers that do no use Krylov accelerators).

Synopsis#

typedef struct _p_KSP *KSP;

Note#

When a direct solver is used, but no Krylov solver is used, the KSP object is still used but with a KSPType of KSPPREONLY (or equivalently KSPNONE), meaning that only application of the preconditioner is used as the linear solver.

See Also#

Summary of Sparse Linear Solvers Available In PETSc, KSP: Linear System Solvers, KSPCreate(), KSPSetType(), KSPType, SNES, TS, PC, KSP, KSPDestroy(), KSPCG, KSPGMRES

Level#

beginner

Location#

include/petscksp.h

Examples#

src/ts/tutorials/ex74.c
src/ksp/ksp/tutorials/ex67.c
src/ts/tutorials/ex47.c
src/ksp/pc/tutorials/ex3.c
src/ksp/pc/tutorials/ex2.c
src/ksp/ksp/tutorials/ex11.c
src/ts/tutorials/ex20opt_ic.c
src/ksp/pc/tutorials/ex1.c
src/ksp/ksp/tutorials/ex73.c
src/ts/tutorials/ex20opt_p.c

Implementations#

_p_KSP in include/petsc/private/kspimpl.h
KSP_BCGS in src/ksp/ksp/impls/bcgs/bcgsimpl.h
KSP_BCGSL in src/ksp/ksp/impls/bcgsl/bcgslimpl.h
KSP_CG in src/ksp/ksp/impls/cg/cgimpl.h
KSP_CGLS in src/ksp/ksp/impls/cg/cgls.c
KSP_Chebyshev in src/ksp/ksp/impls/cheby/chebyshevimpl.h
KSP_FCG in src/ksp/ksp/impls/fcg/fcgimpl.h
KSP_PIPEFCG in src/ksp/ksp/impls/fcg/pipefcg/pipefcgimpl.h
KSP_FETIDPMon in src/ksp/ksp/impls/fetidp/fetidp.c
KSP_FETIDP in src/ksp/ksp/impls/fetidp/fetidp.c
KSP_GCR in src/ksp/ksp/impls/gcr/gcr.c
KSP_PIPEGCR in src/ksp/ksp/impls/gcr/pipegcr/pipegcrimpl.h
KSP_AGMRES in src/ksp/ksp/impls/gmres/agmres/agmresimpl.h
KSP_DGMRES in src/ksp/ksp/impls/gmres/dgmres/dgmresimpl.h
KSP_FGMRES in src/ksp/ksp/impls/gmres/fgmres/fgmresimpl.h
KSP_GMRES in src/ksp/ksp/impls/gmres/gmresimpl.h
KSP_LGMRES in src/ksp/ksp/impls/gmres/lgmres/lgmresimpl.h
KSP_PGMRES in src/ksp/ksp/impls/gmres/pgmres/pgmresimpl.h
KSP_PIPEFGMRES in src/ksp/ksp/impls/gmres/pipefgmres/pipefgmresimpl.h
KSP_LCD in src/ksp/ksp/impls/lcd/lcdimpl.h
KSP_LSQR in src/ksp/ksp/impls/lsqr/lsqr.c
KSP_MINRES in src/ksp/ksp/impls/minres/minres.c
KSP_QCG in src/ksp/ksp/impls/qcg/qcgimpl.h
KSP_Richardson in src/ksp/ksp/impls/rich/richardsonimpl.h
KSP_SYMMLQ in src/ksp/ksp/impls/symmlq/symmlq.c
KSP_TSIRM in src/ksp/ksp/impls/tsirm/tsirm.c


Index of all KSP routines
Table of Contents for all manual pages
Index of all manual pages