KSPMatSolve#

Solves a linear system with multiple right-hand sides stored as a MATDENSE. Unlike KSPSolve(), B and X must be different matrices.

Synopsis#

#include "petscksp.h" 
#include "petscmat.h" 
PetscErrorCode KSPMatSolve(KSP ksp, Mat B, Mat X)

Input Parameters#

  • ksp - iterative context

  • B - block of right-hand sides

Output Parameter#

  • X - block of solutions

Note#

This is a stripped-down version of KSPSolve(), which only handles -ksp_view, -ksp_converged_reason, -ksp_converged_rate, and -ksp_view_final_residual.

See Also#

KSP: Linear System Solvers, KSPSolve(), MatMatSolve(), KSPMatSolveTranspose(), MATDENSE, KSPHPDDM, PCBJACOBI, PCASM

Level#

intermediate

Location#

src/ksp/ksp/interface/itfunc.c

Examples#

src/ksp/ksp/tutorials/ex77.c
src/ksp/ksp/tutorials/ex79.c
src/ksp/ksp/tutorials/ex76f.F90
src/ksp/ksp/tutorials/ex76.c
src/ksp/ksp/tutorials/ex77f.F90

Implementations#

KSPMatSolve_HPDDM() in src/ksp/ksp/impls/hpddm/hpddm.cxx
KSPMatSolve_PREONLY() in src/ksp/ksp/impls/preonly/preonly.c


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