KSP_NORM_NATURAL

Compute the ‘natural norm’ of residual sqrt((b - Ax)B(b - Ax)) and pass that to the convergence test routine. This is only supported by KSPCG, KSPCR, KSPCGNE, KSPCGS, KSPFCG, KSPPIPEFCG, KSPPIPEGCR

See Also

KSP: Linear System Solvers, KSPNormType, KSP, KSPSetNormType(), KSP_NORM_NONE, KSP_NORM_PRECONDITIONED, KSP_NORM_UNPRECONDITIONED, KSPSetConvergenceTest()

Level

advanced

Location

include/petscksp.h

Examples

src/ksp/ksp/tests/ex94.c
src/snes/tutorials/ex11.c

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Index of all KSP routines
Table of Contents for all manual pages
Index of all manual pages