KSPGMRESModifiedGramSchmidtOrthogonalization#

This is the basic orthogonalization routine using modified Gram-Schmidt.

Synopsis#

Collective, No Fortran Support

Input Parameters#

  • ksp - KSP object, must be associated with KSPGMRES, KSPFGMRES, or KSPLGMRES Krylov method

  • it - one less than the current GMRES restart iteration, i.e. the size of the Krylov space

Options Database Key#

Note#

In general this is much slower than KSPGMRESClassicalGramSchmidtOrthogonalization() but has better stability properties.

See Also#

KSP: Linear System Solvers, KSPGMRESSetOrthogonalization(), KSPGMRESClassicalGramSchmidtOrthogonalization(), KSPGMRESGetOrthogonalization()

Level#

intermediate

Location#

src/ksp/ksp/impls/gmres/borthog.c


Index of all KSP routines
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Index of all manual pages