[lammps-users] showing error lost atoms

Dear lammps-users,
When I am running lammps for granular flow using data file containing
two atom types of different radius, I am getting error "ERROR: Lost
atoms: original 32000 current 31999".
Why lammps is losing atom after some time steps. Is this signify that,
I cannot use lammps for atoms of different radius or there is any
other reason for this.
Thanking you

Shantanu Maheshwari

You can use atoms of different radius. The error is b/c
one or more atoms left the siimulation box. You need to
figure out why - it's usually a bad model of some sort.


Thanks Steve for your help. You are right, atoms are leaving the
simulation box and there is an error in my script file.
Thanking you

Shantanu Maheshwari