Re: [gmx-users] topology treatment in free energy calculations - possible bug_2nd

2008-01-04 Thread David Mobley
Maik,

> It just came to my mind, that the behaviour, I described in the first
> mail will be quite dangerous, whenever #define statements are in the
> topology, cause this would lead to the insertion of the FF-values in the
> topology, when preprocessing, and then be copied into the B-state
> afterwards, even if the values are crap for the B-state...

As far as treatment of A and B state parameters, I am not sure there
is any solution that doesn't result in "dangerous" behavior in some
situations. Therefore my recommendation is that anytime one is
handling atoms which are being perturbed (i.e., where the B state
*might* be different from the A state) both A and B state parameters
be specified explicitly in the topology by the user.

David


> Regards
>
> --
> Maik Goette, Dipl. Biol.
> Max Planck Institute for Biophysical Chemistry
> Theoretical & computational biophysics department
> Am Fassberg 11
> 37077 Goettingen
> Germany
> Tel.  : ++49 551 201 2310
> Fax   : ++49 551 201 2302
> Email : mgoette[at]mpi-bpc.mpg.de
>  mgoette2[at]gwdg.de
> WWW   : http://www.mpibpc.gwdg.de/groups/grubmueller/
>
>
> --
> Maik Goette, Dipl. Biol.
> Max Planck Institute for Biophysical Chemistry
> Theoretical & computational biophysics department
> Am Fassberg 11
> 37077 Goettingen
> Germany
> Tel.  : ++49 551 201 2310
> Fax   : ++49 551 201 2302
> Email : mgoette[at]mpi-bpc.mpg.de
>  mgoette2[at]gwdg.de
> WWW   : http://www.mpibpc.gwdg.de/groups/grubmueller/
> ___
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[gmx-users] topology treatment in free energy calculations - possible bug_2nd

2008-01-04 Thread Maik Goette

Hi once more

It just came to my mind, that the behaviour, I described in the first 
mail will be quite dangerous, whenever #define statements are in the 
topology, cause this would lead to the insertion of the FF-values in the 
topology, when preprocessing, and then be copied into the B-state 
afterwards, even if the values are crap for the B-state...


Regards

--
Maik Goette, Dipl. Biol.
Max Planck Institute for Biophysical Chemistry
Theoretical & computational biophysics department
Am Fassberg 11
37077 Goettingen
Germany
Tel.  : ++49 551 201 2310
Fax   : ++49 551 201 2302
Email : mgoette[at]mpi-bpc.mpg.de
mgoette2[at]gwdg.de
WWW   : http://www.mpibpc.gwdg.de/groups/grubmueller/


--
Maik Goette, Dipl. Biol.
Max Planck Institute for Biophysical Chemistry
Theoretical & computational biophysics department
Am Fassberg 11
37077 Goettingen
Germany
Tel.  : ++49 551 201 2310
Fax   : ++49 551 201 2302
Email : mgoette[at]mpi-bpc.mpg.de
mgoette2[at]gwdg.de
WWW   : http://www.mpibpc.gwdg.de/groups/grubmueller/
___
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