[gmx-users] question about the minimization

[Bogdan Costescu]

On Thu, Oct 18, 2012 at 10:53 AM,
<reisingere at rostlab.informatik.tu-muenchen.de> wrote:

> Steepest Descents converged to machine precision in 20385 steps,
> but did not reach the requested Fmax < 10.
> Potential Energy  = -8.8805600e+05
> Maximum force     =  3.2341940e+02 on atom 3050
> Norm of force     =  2.0930219e+00
>
> I do not see why it can not reach a lower force.

Probably you run mdrun in single precision. To reach such low force
you normally need a double precision mdrun. Do you actually need such
a low force ? There were many messages on this subject from Justin on
this very list, please look them up.

Good luck with your simulations!
Bogdan