Re: Fwd: How can I load two forcefied at the same time

From: Leonardo Trabuco (
Date: Fri Nov 21 2008 - 11:16:34 CST

Dear Ying,

On Thu, Nov 20, 2008 at 1:24 PM, Wang,Ying <> wrote:
> Hi, dear all,
> If I have two forcefield sets needed to be loaded at the same time, like amber 99 and glycam. How can I do?
> Thanks a lot!

What exactly do you mean by load a force field in NAMD? If you are
using Amber-style inputs in NAMD, then you don't really load the
entire parameter set. Instead, you load a single file containing the
structure information and the relevant parameters using the 'parmfile'
command. Now, if you are CHARMM-style inputs, then you can have as
many 'parameters' statements as you want, ie, you can load several
different parameter files.


Leonardo Trabuco, Ph.D. candidate
Theoretical and Computational Biophysics Group
University of Illinois at Urbana-Champaign

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