petsc-3.4.2 2013-07-02

# KSPSYMMLQ

This code implements the SYMMLQ method.

### Options Database Keys

see KSPSolve() -

Notes: The operator and the preconditioner must be symmetric for this method. The preconditioner must be POSITIVE-DEFINITE.

Supports only left preconditioning.

Reference: Paige & Saunders, 1975.

### See Also

KSPCreate(), KSPSetType(), KSPType (for list of available types), KSP

Level:beginner
Location:src/ksp/ksp/impls/symmlq/symmlq.c
Index of all KSP routines
Table of Contents for all manual pages
Index of all manual pages