Fortunately, I could run an example in LAMMPS. It was ‘colloid’. But the problem with
that was the error message: ‘invalid pair_style’. You know after this error,
the simulation stops. So I opened the vi ‘in.colloid’, the ‘pair_style
style’ was ‘colloid’ and the ‘args’ was 12.5. I checked the list of errors
in LAMMPS manual and find nothing wrong with these configurations. Would you
please help me to run this example completely?