[gmx-users] minimum number of atoms required.

Yang Ye leafyoung81-group at yahoo.com
Mon Jul 10 05:13:07 CEST 2006

have you used gen_vel=yes.

Yang Ye

karamyog singh wrote:
> Dear users, I have a system with just one atom. I am using periodic 
> boundary conditions. No matter what conditions I use, the atom doesnt 
> seem to move. Are a minimum of 2 atoms required to do a simulation in 
> Gromacs? If I have only one atom and I am using periodic boundary 
> conditions then whether I have interaction potential or not, the atom 
> should move with some velocity. However this does not happen. Can 
> anyone tell me what is the reason for that?
> Thanks.
> Karamyog Singh.
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