petsc-master 2014-12-17
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MatGetFactor

Returns a matrix suitable to calls to MatXXFactorSymbolic()

Synopsis

#include "petscmat.h" 
PetscErrorCode  MatGetFactor(Mat mat, const MatSolverPackage type,MatFactorType ftype,Mat *f)
Collective on Mat

Input Parameters

mat - the matrix
type - name of solver type, for example, superlu, petsc (to use PETSc's default)
ftype - factor type, MAT_FACTOR_LU, MAT_FACTOR_CHOLESKY, MAT_FACTOR_ICC, MAT_FACTOR_ILU,

Output Parameters

f -the factor matrix used with MatXXFactorSymbolic() calls

Notes

Some PETSc matrix formats have alternative solvers available that are contained in alternative packages such as pastix, superlu, mumps etc.

PETSc must have been ./configure to use the external solver, using the option --download-package

See Also

MatCopy(), MatDuplicate(), MatGetFactorAvailable()

Level:intermediate
Location:
src/mat/interface/matrix.c
Index of all Mat routines
Table of Contents for all manual pages
Index of all manual pages

Examples

src/ksp/ksp/examples/tutorials/ex52.c.html