On Tue, Aug 6, 2013 at 2:38 PM, Zou (Non-US), Ling <[email protected]> wrote:
> Dear All, > > I just explored the user manual v3.4 and I noticed the option > > -ksp_compute_eigenvalues > > I test it with my problem with ~1000 number of dofs, and it printed out > > Iteratively computed eigenvalues > 0.840692 + 0i > 0.857247 - 0.235747i > 0.857247 + 0.235747i > 0.999993 + 0i > 1.03457 + 0i > 2.69763 + 0i > > I noticed there are complex numbers... I wonder what does the printout > info indicate, a good system, a bad system or nothing special? > Eigenvalues are complex. This looks like a well-conditioned system, and its not Hermitian. Matt > > Best, > > Ling > -- What most experimenters take for granted before they begin their experiments is infinitely more interesting than any results to which their experiments lead. -- Norbert Wiener
