On Sat, Jun 23, 2018 at 4:40 PM, Eduardo A <[email protected]> wrote:
> Hi, thank you for your reply
>
> I have another question about how to include the coarse grained particles in
> the coordinate file for gromacs (.gro)  for an adaptive resolution
> simulation. I've read in the gromacs manual (version 5.1.5) that this
> coordinate file containing the coarse-grained sites for every molecule
> (water, in my case) can be created with the csg_map function of VOTCA with
> the --hybrid option enabled. The output would be something like:
>
> adaptive water coordinates
>
> 34028
>
> 1SOL OW    1   0.283  0.886  0.647
> 1SOL HW1  2   0.359  0.884  0.711
> 1SOL HW2  3   0.308  0.938  0.566
> 1SOL CG     4   0.289  0.889  0.646
> 1SOL OW    5   1.848  0.918  0.082
> 1SOL HW1  6   1.760  0.930  0.129
> 1SOL HW2  7   1.921  0.912  0.150
> 1SOL CG    8   1.847  0.918  0.088
> (...)
>
>  where each coarse-grained site is located in the center of mass of the
> water molecule. My problem is that I'm not being able to generate this file.
> csg_map requires a topology file in .tpr format and when I try to create it
> with grompp it gives me an error that the CG particles indicated in the .top
> file cannot be found. So, I'm confused. I would appreciate if you could help
> me showing how could I make this hybrid coordinate file.
Just the files from the spce/atomistic folder in csg-tutorials:
$ cd csg-tutorials/spce/atomistic
$ gmx grompp
$ csg_map --top topol.tpr --cg water.xml --trj conf.gro --out
conf_hy.gro --hybrid

Christoph
>
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-- 
Christoph Junghans
Web: http://www.compphys.de

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