Lee Soin wrote:
There's also an option "freezegrps". When should this be used?


Freeze groups: Manual section 3.3
Restraints: section 4.3

Note the fundamental difference between "fixed" and "harmonically restrained."

-Justin


2009/2/23 Justin A. Lemkul <jalem...@vt.edu <mailto:jalem...@vt.edu>>



    Lee Soin wrote:

        Hello, all!
        Which option in .mdp file is used to specify position restraint
        and the corresponding force constant?


    In your topology, you should have something like:

    #ifdef POSRES
    #include "posre.itp"
    #endif

    The posre.itp file contains force constants; in the .mdp file you
    can "define = -DPOSRES"

    -Justin

-- Sun Li
        Department of Physics
        Nanjing University, China


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-- ========================================

    Justin A. Lemkul
    Graduate Research Assistant
    Department of Biochemistry
    Virginia Tech
    Blacksburg, VA
    jalemkul[at]vt.edu <http://vt.edu/> | (540) 231-9080
    http://www.bevanlab.biochem.vt.edu/Pages/Personal/justin

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--
Sun Li
Department of Physics
Nanjing University, China

--
========================================

Justin A. Lemkul
Graduate Research Assistant
Department of Biochemistry
Virginia Tech
Blacksburg, VA
jalemkul[at]vt.edu | (540) 231-9080
http://www.bevanlab.biochem.vt.edu/Pages/Personal/justin

========================================
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