The problem is outside your parameter file.
On Fri, Jan 15, 2016 at 3:56 PM, Marco Franzoi <marco.franzo...@gmail.com> wrote: > Good evening to everyone. > > I've an issue regarding a membrane simulation. > I've downloaded an already equilibrated POPE/POPG membrane and, to test the > system, I run an em, a 0.1 ns nvt and 1 ns npt simulation and everything > was fine. > > Then, I've raised the cell lenght in the z direction and added a peptide, > solvate, ionized and minimized. The next ntv step was also fine but, when I > run the npt simulation, suddenly the cell broadens in xy directions and > shrinks in z direction. > > What can be wrong with it? > > My npt.mpd file is attached. > > Thanks for your help! > > Marco FRANZOI > PhD Student > University of Padua > Department of biology, V floor South > Tel: 3405086908 > Mail: marco.franzo...@gmail.com > > -- > Gromacs Users mailing list > > * Please search the archive at > http://www.gromacs.org/Support/Mailing_Lists/GMX-Users_List before > posting! > > * Can't post? Read http://www.gromacs.org/Support/Mailing_Lists > > * For (un)subscribe requests visit > https://maillist.sys.kth.se/mailman/listinfo/gromacs.org_gmx-users or > send a mail to gmx-users-requ...@gromacs.org. > -- Gromacs Users mailing list * Please search the archive at http://www.gromacs.org/Support/Mailing_Lists/GMX-Users_List before posting! * Can't post? Read http://www.gromacs.org/Support/Mailing_Lists * For (un)subscribe requests visit https://maillist.sys.kth.se/mailman/listinfo/gromacs.org_gmx-users or send a mail to gmx-users-requ...@gromacs.org.