On Mon, 2010-11-01 at 18:35 +0100, Pouya Partovi wrote:
> MD.LengthTimeStep is set to 1 fs.

Try smaller value then. 0.5 fs should be better (depending on your
system). And - of course - it will take twice as many steps to complete
the run...

Good luck,
Bartek



> ----- Original Message -----
> From: "Bartek Szyja" <[email protected]>
> To: [email protected]
> Sent: Monday, November 1, 2010 7:19:19 PM
> Subject: Re: [SIESTA-L] A (sort of general) MD question
> 
> On Mon, 2010-11-01 at 15:26 +0100, Pouya Partovi wrote:
> > Dear SIESTA users,
> > 
> > I have a problem with a MD simulation I'm performing with SIESTA at 305
> >  K. I have attached the T, KS_Energy, Tot_Energy and P versus steps
> >  plots to this message. Although T, KS_Energy and P reach the
> >  equilibrium quite soon, the total energy has a trend even on step
> >  15,000. 
> 
> What timestep do you set in your calculations? 15 thousands of steps,
> but how many picoseconds that is?
> 
> Cheers,
> Bartek
> 


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