Regarding data file for CO2 and graphene system

I am not sure what do you mean by no movement.

How long did you run for.
What is the cut off.

I am not sure what velocity command has to do with it.
It sets the temperature.

I am not sure what do you mean by no movement.

How long did you run for.
What is the cut off.

​more importantly, was there an integrator fix defined in the input.​

I am not sure what velocity command has to do with it.
It sets the temperature.

​at any rate, these discussions are pretty much useless without "hard"
evidence.
LAMMPS *does* work correctly, when *used* correctly. there are thousands of
people that can attest to that.
however from vague statements like "it doesn't work" or "there was no
movement", nobody can say why outside of "you must have done something
wrong".

bottom line: if you ask good questions, you'll get good and helpful
answers. if not, you have to get lucky.

axel.