[lammps-users] A strange result for “ fix npt”

Again, you are sure that the restart file produced after
step 2 has a box that is cubic? B/c it results
from an npt aniso run which will not conserve
the aspect ratio. Step 3 should, but it will start
with an aspect ratio that is the output of step 2.

I cannot run this problem with your restart file
and input script. B/c the restart file says
it was produced by the 5Oct07 version of LAMMPS
and can't be read by the current version. So if
you are running an (ancient) version of LAMMPS,
upgrade to the current version and try this again.

If you still have problems, convert your restart file to a data file
and post that, not the restart file, and do it for a small