PCPreSolve#
Optional pre-solve phase, intended for any preconditioner-specific actions that must be performed before the iterative solve itself.
Synopsis#
#include "petscksp.h"
PetscErrorCode PCPreSolve(PC pc, KSP ksp)
Collective
Input Parameters#
pc - the preconditioner context
ksp - the Krylov subspace context
Example Usage#
PCPreSolve(pc,ksp);
KSPSolve(ksp,b,x);
PCPostSolve(pc,ksp);
Notes#
The pre-solve phase is distinct from the PCSetUp() phase.
KSPSolve() calls this directly, so is rarely called by the user.
See Also#
Level#
developer
Location#
Implementations#
PCPreSolve_BDDC() in src/ksp/pc/impls/bddc/bddc.c
PCPreSolve_Deflation() in src/ksp/pc/impls/deflation/deflation.c
PCPreSolve_Eisenstat() in src/ksp/pc/impls/eisens/eisen.c
PCPreSolve_HPDDM() in src/ksp/pc/impls/hpddm/pchpddm.cxx
PCPreSolve_LMVM() in src/ksp/pc/impls/lmvm/lmvmpc.c
PCPreSolve_Shell() in src/ksp/pc/impls/shell/shellpc.c
PCPreSolve_PDIPM() in src/tao/constrained/impls/ipm/pdipm.c
Index of all PC routines
Table of Contents for all manual pages
Index of all manual pages