KSPHPDDMGetDeflationMat#
Gets the deflation space computed by Krylov methods in KSPHPDDM with recycling or NULL if KSPSolve() has not been called yet.
Synopsis#
#include "petscksp.h"
PetscErrorCode KSPHPDDMGetDeflationMat(KSP ksp, Mat *U)
Input Parameter#
ksp - iterative context
Output Parameter#
U - deflation space generated during
KSPSolve()
Note#
This space is viewed as a set of vectors stored in a MATDENSE (column major). It is the responsibility of the user to free the returned Mat.
See Also#
KSP: Linear System Solvers, KSPHPDDM, KSPCreate(), KSPType, KSPHPDDMSetDeflationMat()
Level#
intermediate
Location#
Examples#
src/ksp/ksp/tutorials/ex75.c
src/ksp/ksp/tutorials/ex75f.F90
Implementations#
KSPHPDDMGetDeflationMat_HPDDM() in src/ksp/ksp/impls/hpddm/hpddm.cxx
Index of all KSP routines
Table of Contents for all manual pages
Index of all manual pages