[lammps-users] relaxation time and timestep(H.Q.Lu)

Dear all
Using the command “fix all nvt 3000 1000 1000” to simulatated the cooling temperture, is it right?
and run “50000” ,the “50000” and the relaxation time “1000” have what differ?

These 2 commands:

fix all nvt 3000 1000 1000
run 50000

mean run for 50K steps and over that time reduce the T from 3000K to 1000K. The
last 1000 on fix nvt is the damping constant for how fast the T will respond. It has
nothing to do with the 50K timesteps.