# KSPLSQR

This implements LSQR

### Options Database Keys

see KSPSolve() -

Notes: This algorithm DOES NOT use a preconditioner. It ignores any preconditioner arguments specified. Reference: Paige and Saunders, ACM Transactions on Mathematical Software, Vol 8, pp 43-71, 1982

### See Also

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

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