[Pw_forum] ph.x max_irr_dim
eyvaz_isaev at yahoo.com
Wed Mar 9 10:56:21 CET 2005
I am aware of this error. It comes from phcom.f90. You
can increase max_irr_dim parameter and the recompile
PH. The parameter defines maximum allowed number of
degeneracy of modes. Fore some reason you have more
than 4-fold degenerate modes. max_irr_dim=4 is
accepted by default.
--- Vasile Chis <cvasse at fy.chalmers.se> wrote:
> I have a problem with ph.x.......when I try to
> calculate phonons at a
> q-point near Gamma, I get the following message:
> task # 8
> from set_irr : error # 0
> npert > max_irr_dim
> And I also got it once at the Gamma point
> calculation of the phonons.
> I'm using the latest version of the pw-scf code.
> I have searched the pw-forum, but I haven't seen
> anyone else with this
> I thank you for your replies.
> Vasile Chis
> Interface Modelling Group
> Department of Physics
> Göteborgs Universitet
> Pw_forum mailing list
> Pw_forum at pwscf.org
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