[gmx-users] [Pairs] parameters input format

[Berk Hess]

>From: "Paul A. Rowntree" <Paul.Rowntree at USHerbrooke.ca>
>Reply-To: Paul.Rowntree at USherbrooke.ca,Discussion list for GROMACS users 
><gmx-users at gromacs.org>
>To: gmx-users at gromacs.org
>Subject: [gmx-users] [Pairs] parameters input format
>Date: Fri, 13 May 2005 12:02:28 -0400
>
>Greetings all;
>There has been a number of posts concerninn the format for entering non-std 
>pair
>interaction parameters; it appears that in v3.2.1 this must always be in 
>C6/C12
>format, regardless of the structure of the original ff files.  THis has 
>been
>fixed in CVS.
>
>Will it be possible to preserve the possibility of entering these params in
>C6/C12 format ?  It would be useful to define hard-sphere type interactions
>(C6=0) but this is not possible in the OPLS-AA ff (eps, sigma).

The pairs fix is only for the case where the normal LJ parameters
are also in sigma/epsilon format (i.e. combination rules 2 and 3).
Combination rule 1 (C6/C12) is unaffected.

Berk.

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