FL Name Style:
FL Specification Language:
Iteration Limit = 500is an example of a string used to set an optional parameter. For each option the string contains one or more of the following items:
|No output except error messages.
|The set of selected options.
|Problem and timing statistics on final exit from f12abf or f12agf.
|A single line of summary output at each Arnoldi iteration.
|If , then at each iteration, the length and additional steps of the current Arnoldi factorization and the number of converged Ritz values; during re-orthogonalization, the norm of initial/restarted starting vector.
|Problem and timing statistics on final exit from f12abf. If , then at each iteration, the number of shifts being applied, the eigenvalues and estimates of the Hessenberg matrix , the size of the Arnoldi basis, the wanted Ritz values and associated Ritz estimates and the shifts applied; vector norms prior to and following re-orthogonalization.
|If , then on final iteration, the norm of the residual; when computing the Schur form, the eigenvalues and Ritz estimates both before and after sorting; for each iteration, the norm of residual for compressed factorization and the compressed upper Hessenberg matrix ; during re-orthogonalization, the initial/restarted starting vector; during the Arnoldi iteration loop, a restart is flagged and the number of the residual requiring iterative refinement; while applying shifts, the indices of the shifts being applied.
|If , then during the Arnoldi iteration loop, the Arnoldi vector number and norm of the current residual; while applying shifts, key measures of progress and the order of ; while computing eigenvalues of , the last rows of the Schur and eigenvector matrices; when computing implicit shifts, the eigenvalues and Ritz estimates of .
|If , then during Arnoldi iteration loop: norms of key components and the active column of , norms of residuals during iterative refinement, the final upper Hessenberg matrix ; while applying shifts: number of shifts, shift values, block indices, updated matrix ; while computing eigenvalues of : the matrix , the computed eigenvalues and Ritz estimates.
|Shifted Inverse Imaginary
|Shifted Inverse Real