Problem in calculating thethermal conductivity

Dear LAMMPS users,

I have the problem in calculate the thermal conductivity of fluid through the Green – Kubo, when used unit metal or used units real,

Are the values of p (correlation length) and s (sample interval) always the same when we use units metal or real?

Variable p equal 10000 # correlation length
variable s equal 10 # sample interval

Sincerely yours,