MatLMVMSetJ0KSP

Allows the user to provide a pre-configured KSP solver for the initial inverse-Jacobian approximation.

Synopsis

#include "petscksp.h" 
PetscErrorCode MatLMVMSetJ0KSP(Mat B, KSP J0ksp)

Input Parameters

• B - A MATLMVM matrix

• J0ksp - KSP solver for the initial inverse-Jacobian application

Note

The KSP solver should already contain all the operators necessary to perform the inversion. The MATLMVM matrix only calls KSPSolve() without changing any other options.

If the sizes of B have not been specified (using MatSetSizes() or MatSetLayouts()) before MatLMVMSetJ0KSP() is called, then B will adopt the sizes and layouts of the operators of J0ksp, and these sizes will be final.

See Also

KSP: Linear System Solvers, LMVM Matrices, MATLMVM, MatLMVMGetJ0KSP()

Level

advanced

Location

src/ksp/ksp/utils/lmvm/lmvmutils.c

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