# [Getdp] Electromagnetic 3D model - Crash info (bug?)

Lars Rindorf Lars.Rindorf at teknologisk.dk
Wed Jul 30 13:13:03 CEST 2008

Hi Lucas

You need to tell getdp the specific name of your domain. I.e. you should set

Group {
Domain = Region[4000];
}
Group {
Domain = Region[All];
}

I'm also working on 3D electromagnetic bloch simulations, and I can help you if have questions.

Are you work on band structure calc of photonic crystals?

Kind regards
Lars

________________________________

Fra: getdp-bounces at geuz.org [mailto:getdp-bounces at geuz.org] På vegne af Lucas
Sendt: 29. juli 2008 21:51
Til: getdp at geuz.org
Emne: [Getdp] Electromagnetic 3D model - Crash info (bug?)

Hi all,

I've just started working with GetPD and I'm not sure I'm doing the right thing here.
The attached files should solve an 3D eigenvalue EM problem (no boundary conditions or
sources yet) but I can't seem to make them work:

getdp test -solve EMW_3D_Eigen -pos EMW_3D_Eigen

Info      : Selected Resolution 'EMW_3D_Eigen'
Info      : System 'A' : Complex, Frequency = 0 Hz
P r e - P r o c e s s i n g . . .
Operation : Treatment Formulation 'EMW_3D_Eigen'
Error     : Segmentation violation (invalid memory reference)
------------------------------------------------------
You have discovered a bug in GetDP! You may report it
by e-mail (together with any helpful data permitting to
reproduce it) to <getdp at geuz.org>

The geometry file is transfinite just cause I plan to use Bloch periodic conditions later (any
help in that matter would also be welcome).

If I can manage to understand how to correctly create a model in GetDP, I would say it's one
of the best sw packages for FEM, but I couldn't do it following only the documentation.

Thanks for any help,
Lucas

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