Reruns MUST use trr files. 

On Jul 9, 2010, at 19:04, "Jeffery Perkins" <[email protected]> wrote:

> I'm no expert but try a rerun, it will allow you to get at least the 
> potential energies for each frame in your trr or xtc file, I've never been 
> interested in kinetic for my reruns and as such am unsure how that would work 
> though it should be possible.  For this you'll need to build a slightly 
> different mdp file with at least the following options (other stuff should be 
> the same as in your initial run of this system)
> 
> nsteps = 0
> nxtenergy = 1
> 
> I usually turn the trr or xtc that I need to rerun into a gro file for input 
> using
> trjconv -f traj.trr -o out.gro -ndec 3
> 
> You then need to grompp this new mdp file something like:
> grompp -f rerun.mpd -p topol.top -c out.gro
> 
> and run an mdrun with the -rerun option turned on.
> 
> mdrun -rerun traj.trr
> 
> this should give you the energies at each frame in the normal ener.edr file 
> used by g_energy
> 
> May have missed something but this should be a good place to start looking, 
> best of luck,
> 
> Jeffery Perkins
> 
> ---------------------------------
> Magdalena <[email protected]> wrote:
> 
> Hi, i will be grateful for any clue.
> 
> Is it possible to extract an energy from finished trajectory? In my case the 
> trajectory wasn't leading with flag e so it's obvious that I haven't got any 
> edr files.
> I know that in log file there is some information about energy but I would 
> like to have it in one file. My trajectory is quite long so that why I 
> wouldn't like to start calcultations from the beginnig in order to achieve 
> right files. If somebody had a similar situation then would be so kind and 
> instruct me in right direction?
> Thanks in advance
> 
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