slepc-3.21.1 2024-04-26
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STPrecondSetKSPHasMat

Sets a flag indicating that during STSetUp the coefficient matrix of the KSP linear solver (A) must be set to be the same matrix as the preconditioner (P).

Synopsis

#include "slepcst.h" 
PetscErrorCode STPrecondSetKSPHasMat(ST st,PetscBool ksphasmat)
Collective

Input Parameters

st  - the spectral transformation context
ksphasmat  - the flag

Notes

Often, the preconditioner matrix is used only in the PC object, but in some solvers this matrix must be provided also as the A-matrix in the KSP object.

See Also

STPrecondGetKSPHasMat(), STSetShift()

Level

developer

Location

src/sys/classes/st/impls/precond/precond.c

Index of all ST routines
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Index of all manual pages