PCFactorGetMatrix#

Gets the factored matrix from the preconditioner context. This routine is valid only for the PCLU, PCILU, PCCHOLESKY, and PCICC methods.

Synopsis#

#include "petscksp.h" 
PetscErrorCode PCFactorGetMatrix(PC pc, Mat *mat)

Not Collective on pc though mat is parallel if pc is parallel

Input Parameter#

  • pc - the preconditioner context

Output parameters#

  • mat - the factored matrix

Note#

Does not increase the reference count for the matrix so DO NOT destroy it

See Also#

PC, PCLU, PCILU, PCCHOLESKY, PCICC

Level#

advanced

Location#

src/ksp/pc/interface/precon.c

Examples#

src/ksp/pc/tutorials/ex1.c.html
src/ksp/pc/tutorials/ex2.c.html
src/ksp/ksp/tutorials/ex52.c.html
src/ksp/ksp/tutorials/ex52f.F90.html
src/ksp/ksp/tutorials/ex57f.F90.html
src/ksp/ksp/tutorials/ex77.c.html
src/ksp/ksp/tutorials/ex77f.F90.html

Implementations#

PCFactorGetMatrix_Factor in src/ksp/pc/impls/factor/factimpl.c
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