value of seed

Dear all,

what is the importance of seed value which is used in velocity command?

how to decide that?

i have started to learn LAMMPS before 10days.

thanks in advance

Seed is just a number used to “seed” the random number generator. A different number leads to different velocities for each atom, and running the same script with the same seed twice leads to the exact same velocity per atom.

If the random number generator is good, there is no optimum choice for the seed as any will generate a good stream of pseudo-random numbers. The most important thing is to remember the seed you used, so that your data is reproducible.

Although this statement is only true if you run it on the same number of
processors I think.