[gmx-users] 'constraints' directive and water

[Alex]

Hi all,

Some of my simulations run with a time step of 2 fs and 'constraints' 
set to 'none'. Everything runs perfectly fine, but with such a time 
step, do you usually set constraints to 'h-bonds'? I know I should be 
looking at literature for this, but just wanted to get a basic idea on 
whether people do this.

Thanks,

Alex