Re: [AMBER] After running MD, the number of atom in mdcrd file becomes 0

From: Gu, Wenze <wenze_gu.brown.edu>
Date: Thu, 1 Mar 2018 18:43:56 -0500

Hi Carlos,

Yes, I first loaded the prmtop file and then loaded the mdcrd file. After
loaded the prmtop file, vmd said there are 38800 atoms.

Best,
Wenze Gu
Department of Chemistry
Brown University

On Thu, Mar 1, 2018 at 2:37 PM, Carlos Simmerling <
carlos.simmerling.gmail.com> wrote:

> this was just discussed a few days ago on the list, most likely you are not
> using the right format for the file in VMD.
> Amber coordinates format is the trajectory file (mdcrd), restart format is
> the restart file. did you load your prmtop first, then the mdcrd file as
> coordinates format (or coordinates with box)?
>
> On Thu, Mar 1, 2018 at 2:16 PM, Gu, Wenze <wenze_gu.brown.edu> wrote:
>
> > Dear list,
> >
> > I ran amber MD with this .in file:
> >
> > md, npt, equilibrium to 300K quickly,
> > &cntrl
> > imin = 0, ntx = 7, irest = 1, ig=-1
> > ntpr = 1000, ntwx = 1000, ntwe = 0, ntwprt=0, ntwr=50000,
> > ntc = 2, ntf = 2, iwrap = 1, ioutfm = 1,
> > nstlim = 10000000, dt =0.002,
> > temp1=300.0, temp0 = 300.0, ntt =1, tautp =2.0,
> > ntb = 2, ntp = 1, taup = 2.0, pres0 =1.0, cut = 12.0,
> > &end
> > END
> > END
> >
> > However, when I tried to read the trajectory file in VMD, it says
> incorrect
> > number of atoms <0> in mdcrd file. Meanwhile, the prmtop file has normal
> > number of atoms. Do you know what's going wrong here? Thanks!
> >
> > Best,
> > Wenze Gu
> > Department of Chemistry
> > Brown University
> > _______________________________________________
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> > AMBER.ambermd.org
> > http://lists.ambermd.org/mailman/listinfo/amber
> >
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Received on Thu Mar 01 2018 - 16:00:02 PST
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