# KSP_DIVERGED_DTOL

norm(r) >= dtol*norm(b)

See KSPNormType and KSPSetNormType() for possible norms that may be used. By default for left preconditioning it is the 2-norm of the preconditioned residual, and the 2-norm of the residual for right preconditioning

### See Also

KSPSolve(), KSPGetConvergedReason(), KSPConvergedReason, KSPSetTolerances()

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