[lammps-users] WARNING: Table inner cutoff >= outer cutoff - Is this a problem?

I am running the attached abbreviated code (I can give more details if necessary), but seeing the following warning:
Table inner cutoff >= outer cutoff:
(From LAMMPS error messages) You specified an inner cutoff for a Coulombic table that is longer than the global cutoff. Probably not what you wanted.

My box dimensions are (L_x,L_y,L_z) = (1,1,1.5) and I specify the r_cut for Coulombic interactions to be 0.6. I am not sure what I am doing incorrectly and thus do not know how to fix it. If it is still successfully running, is it really a problem? Any help would be appreciated.

Thanks in advance,


Selections from my code:

Initialize simulation box

dimension 3
boundary p p f
units lj
atom_style charge

Create geometry

region simbox block -0.5 0.5 -0.5 0.5 -0.75 0.75 units box
create_box 2 simbox

#INSERT 500 particles

Create groups

group A type 1
group C type 2
group ions type 1 2

Set masses

mass 1 1.0
mass 2 1.0

Set potentials

pair_style lj/cut/coul/long 0.0125 0.6 #WHY IS THIS WRONG?
pair_coeff * * 0.4 0.005
kspace_style ewald 1E-4
kspace_modify slab 3.0
dielectric 100 #1/0.01


neighbor 1 nsq
neigh_modify delay 0 every 1 check yes page 1000000 one 10000

fix anode all wall/lj93 zlo -0.75 10 0.366246 0.25 units box
fix cathode all wall/lj93 zhi 0.75 10 0.366246 0.25 units box

The LJ cutoff (0.0125) is not what is being referred to. This
is the table cutoff for the Coulomb only portion, set by pair_modify tabinner,
which defaults to sqrt(2.0) which is > 0.6, hence the warning. Most
people run LJ units with sigma = 1.0, hence that is a reasonable default.
You appear to be running with a box size of one, and a tiny sigma, since
your cutoffs are so small. Hence you will need to adjust tabinner.