Importance of shake

Dear Users

Is it important to implement “fix shake” for simulating
a simple system of water molecules?
if yes, what’s the point of that?
I can’t understand the usage of that comment in water case.

Thanks in advance.

Dear Users

Is it important to implement "fix shake" for simulating
a simple system of water molecules?

​depends on the water potential.​ a rigid water model requires keeping the
water geometry rigid. fix shake is one option to achieve this.

if yes, what's the point of that?

I can't understand the usage of that comment in water case.

​this really isn't a LAMMPS question. why don't you ask your adviser?

axel.​