[gmx-users] ERROR: invalid enum 'xy' for variable pbc, using 'xyz'
Mark.Abraham at anu.edu.au
Thu Sep 3 08:52:05 CEST 2009
Darrell Koskinen wrote:
> Dear GROMACS Gurus,
> I am trying to create an infinite sheet of graphene using periodic
> boundary conditions. I created a sheet which fills the entire xy plane
> and thought that all I needed to do was put the line "pbc=xy" into the
> mdp file. However, when I run the simulation, I get the following error:
> ERROR: invalid enum 'xy' for variable pbc, using 'xyz'
> Next time use one of: 'xyz' 'no' 'full'
> This error confuses me since in the manual it clearly states on page
> 146, within the Run Parameters and Programs section, that the options
> for pbc are 'xyz', 'no', or 'xy', which is in contradiction to the error
> Can you please resolve this contradiction for me and let me know if
> there is something else I need to do in order to get a simulation
> running with periodic boundary conditions?
pbc=xy is only implemented in GROMACS 4. Are you using an earlier version?
(Hint: it's always best to quote your version when asking for help!)
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