#include "petscksp.h" PetscErrorCode PETSCKSP_DLLEXPORT KSPGetConvergedReason(KSP ksp,KSPConvergedReason *reason)Not Collective

Notes: Can only be called after the call the KSPSolve() is complete.

** Level:beginner
Location:**src/ksp/ksp/interface/iterativ.c

Index of all KSP routines

Table of Contents for all manual pages

Index of all manual pages

src/ksp/pc/examples/tutorials/ex2.c.html

src/ksp/ksp/examples/tutorials/ex10.c.html

KSP_CONVERGED_RTOL (residual 2 | - norm decreased by a factor of rtol, from 2-norm of right hand side) | |

KSP_CONVERGED_ATOL (residual 2 | - norm less than abstol) | |

KSP_CONVERGED_ITS (used by the preonly preconditioner that always uses ONE iteration) | - . KSP_CONVERGED_QCG_NEG_CURVE | |

KSP_CONVERGED_QCG_CONSTRAINED | - . KSP_CONVERGED_STEP_LENGTH | |

KSP_DIVERGED_ITS (required more than its to reach convergence) | - . KSP_DIVERGED_DTOL (residual norm increased by a factor of divtol) | |

KSP_DIVERGED_NAN (residual norm became Not | - a-number likely do to 0/0) | |

KSP_DIVERGED_BREAKDOWN (generic breakdown in method) | - - KSP_DIVERGED_BREAKDOWN_BICG (Initial residual is orthogonal to preconditioned initial residual. Try a different preconditioner, or a different initial guess.) |