Something confused me about the “velocity” command. I used the command "velocity all create 300.0 492845 rot yes dist gaussian" to distribute velocity to all the molecular. According to my understanding , the velocity should be distributed randomly obeying gaussian distribution. Namely if i do the same simulation twice, the result should be different because the velocity of molecular should be different. But according to my result, i find that if the calculation is made in the same computer using the same cores, the result is the same. So that confused me a lot, how can the “velocity” command distribute the velocity? and can it remain unchanged in the same input?