cna problems

Thanks
I ran the CNA using Lennard-Jones potential for the palladium and i get 5 in CNA, but my problem is when i use a different potential like meam or eam (many body potential). Now i show you the input file that i am using.

units real

boundary f f f

atom_style full

dimension 3

read_data data.pdmeam2

pair_style meam

pair_coeff * * /home/lammps-11Nov13/potentials/library.meam Pd

dihedral_style none
improper_style none

group paladio id 1

neighbor 4.0 bin
neigh_modify every 1 delay 1 check yes

fix 2 all nvt temp 100.0 100.0 10
fix reflect all wall/reflect xlo EDGE xhi EDGE ylo EDGE yhi EDGE zlo EDGE zhi EDGE

velocity all create 100 432567 dist uniform
compute paladio all cna/atom 3.0
compute escalar paladio reduce sum c_paladio

timestep 5
thermo 100000
thermo_style custom step temp pe etotal ecoul evdwl enthalpy c_escalar
thermo_modify norm yes

dump video all atom 100000 dump.pdme2-TIF

restart 10000000 restart.*.pdme2-TIF

run 10000000

Thanks
I ran the CNA using Lennard-Jones potential for the palladium and i get 5 in CNA, but my problem is when i use a different potential like meam or eam (many body potential). Now i show you the input file that i am using.

CNA is completely independent of the potential.

What is the point of the compute reduce sum?