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 KSP_CONVERGED_ATOL which may apply before this tolerance.
Index of all KSP routines
Table of Contents for all manual pages
Index of all manual pages