Re: [SIESTA-L] Questions about MD.Anneal

2007-01-08 Thread Oleksandr Voznyy
I was feeling like I told something incorrect, since I hadn't actually tried to change the T in fdf for a continuation run, but actually the opposite situation - I changed the XV manually for only several atoms. So I've rechecked it with a test MD run. My conclusion about the ignorance of T in

Re: [SIESTA-L] Questions about MD.Anneal

2007-01-04 Thread Oleksandr Voznyy
I am wondering what does that mean and how it is organized. There might be "Temp_ion" varies from 2900 K down to 1734 K back to 2027.534 K (MD.InitialTemperature = 3000 K, MD.TargetTemperature = 2000 K ). Yeah, the fluctuations are quite big. But your T is very high too. What w

Re: [SIESTA-L] Questions about MD.Anneal

2007-01-04 Thread Vasilii Artyukhov
Hi all, 2007/1/4, Andrei Postnikov <[EMAIL PROTECTED]>: On Thu, 4 Jan 2007, Oleksandr Voznyy wrote: | Andrei, | the temperature will start from initial temperature and will gradually change | to target T during MD.TauRelax time with a given time step (as for usual MD). Alexander, thank you ve

Re: [SIESTA-L] Questions about MD.Anneal

2007-01-04 Thread Andrei Postnikov
On Thu, 4 Jan 2007, Oleksandr Voznyy wrote: | Andrei, | the temperature will start from initial temperature and will gradually change | to target T during MD.TauRelax time with a given time step (as for usual MD). Alexander, thank you very much for your response. However, as you say | the temper

Re: [SIESTA-L] Questions about MD.Anneal

2007-01-04 Thread Oleksandr Voznyy
Andrei, the temperature will start from initial temperature and will gradually change to target T during MD.TauRelax time with a given time step (as for usual MD). I've tried to use it with MD.TauRelax 200fs and 1fs step. For my system (molecules on surface or molecules packing) it didn't give

[SIESTA-L] Questions about MD.Anneal

2007-01-03 Thread Andrei Postnikov
Dear SIESTA community, could anyone offer any technical explanations concerning the Anneal option in MD - relevant references, or other documentation? Specifically, I wonder - how exactly do variations of ionic temperature come about in the course of calculation, given initial and target te