petsc-3.7.5 2017-01-01
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KSP_NORM_NONE

 Do not compute a norm during the Krylov process. This will possibly save some computation but means the convergence test cannot be based on a norm of a residual etc.

Note: Some Krylov methods need to compute a residual norm (such as GMRES) and then this option is ignored

See Also

KSPNormType, KSPSetNormType(), KSP_NORM_PRECONDITIONED, KSP_NORM_UNPRECONDITIONED, KSP_NORM_NATURAL

Level:advanced
Location:src/ksp/ksp/../../../include/petscksp.h
Index of all KSP routines
Table of Contents for all manual pages
Index of all manual pages