On Tue, 31 Oct 2006, Dr Chris Stevens wrote:
   am still playing with this complex dielectric issue. I am running
two ctl files listed below.  The first, sea_fake.ctl runs in about 75s
having only real dielectrics ie water with zero conductiivty. The second
which simulates the same situation but with complex dielectric set by
using a seawater conductivitty of 4S/m takes over 200000s to run!
I'm using meep which responds to the meep -V command with:

Probably something is blowing up, and so you're seeing the CPU slow down because of floating-point exceptions.

(polarizations
            (make polarizability
              (omega 1e-20) (gamma 1e13) (delta-epsilon 4.5e65))
            )
           )))

Try to use smaller values for these things, e.g. put resonances not at omega=0. I've noticed that trying to put a resonance at omega near zero like this can lead to instabilities.

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