2016-05-16 15:27 GMT-06:00 Chang Woon Jang <[email protected]>:
> Dear Christoph,
>
>      Thank you for the quick reply. In the spce/ibi_pressure example,
> <do_potential> is every second step (ex., 0 1 0) and <do> inside <pressure>
> is every first and third step (1 0 1).
>
>
> Do these <do_potential> and <do> alternatively need to be set? or Can I set
> as I wish as follows?
You can set them as you wish! In the example we used them alternating.

Christoph
>
>
>
>
>
> Thank you.   <non-bonded>
>     <!-- name of the interaction -->
>     <name>A-A</name>
>     <!-- types involved in this interaction -->
>     <type1>A</type1>
>     <type2>A</type2>
>     <!-- dimension + grid spacing of tables for calculations -->
>     <min>0.32</min>
>     <max>1.47</max>
>     <step>0.01</step>
>     <inverse>
>       <!-- target distribution (rdf), just give gromas rdf.xvg -->
>       <target>CG-CG.A-A.dist.tgt</target>
>       <p_target>1.0</p_target>
>       <!-- update cycles -->
>       <do_potential>1 0 0 0 0 0 0 0 0 0 0 0 0 0 0</do_potential>
>       <!-- additional post processing of dU before added to potential -->
>       <post_update>pressure</post_update>
>       <post_update_options>
>         <pressure>
>           <type>simple</type>
>           <do>1 0 1</do>
>           <simple>
>             <scale>0.0003</scale>
>           </simple>
>         </pressure>
>       </post_update_options>
>       <!-- additional post processing of U after dU added to potential -->
>       <post_add>convergence</post_add>
>       <!-- name of the table for gromacs run -->
>       <gromacs>
>         <table>table_A_A.xvg</table>
>       </gromacs>
>     </inverse>
>   </non-bonded>
>
>
>
> Best regards,
> Changwoon Jang
>
>
>
>
> On Mon, May 16, 2016 at 5:05 PM, Christoph Junghans <[email protected]>
> wrote:
>>
>> 2016-05-16 15:00 GMT-06:00 Chang Woon Jang <[email protected]>:
>> > Dear VOTCA users,
>> >
>> >
>> >      I need a help to use pressure correction during nonbond IBI
>> > calculation. Without the pressure correction, the derived CG potentials
>> > do
>> > not give the right density close to experiment. The density is much
>> > lower
>> > than the experiment. Therefore, I would like to re-derive nonbond
>> > potentials
>> > using pressure correction. The previous setting.xml for nonbond IBI is
>> > like
>> > below for example. Where do I need to put the <p_target>, <post_update>,
>> > <pressure>, <type>, etc? Do I need to put those blocks in the <inverse>
>> > block?
>> >
>> > I am not sure the syntax for the pressure correction. Would you please
>> > give
>> > me a comment or example script?  Thank you very much.
>> See the spce/ibi_pressure tutorial:
>> https://github.com/votca/csg-tutorials/tree/master/spce/ibi_pressure
>>
>> The p_target goes into the inverse block and the pressure block under
>> the post_update_options option.
>>
>> Christoph
>> >
>> >   <non-bonded>
>> >     <!-- name of the interaction -->
>> >     <name>A-A</name>
>> >     <!-- types involved in this interaction -->
>> >     <type1>A</type1>
>> >     <type2>A</type2>
>> >     <!-- dimension + grid spacing of tables for calculations -->
>> >     <min>0.32</min>
>> >     <max>1.47</max>
>> >     <step>0.01</step>
>> >     <inverse>
>> >       <!-- target distribution (rdf), just give gromas rdf.xvg -->
>> >       <target>CG-CG.A-A.dist.tgt</target>
>> >       <!-- update cycles -->
>> >       <do_potential>1 0 0 0 0 0 0 0 0 0 0 0 0 0 0</do_potential>
>> >       <!-- additional post processing of dU before added to potential
>> > -->
>> >       <post_update></post_update>
>> >       <!-- additional post processing of U after dU added to potential
>> > -->
>> >       <post_add>convergence</post_add>
>> >       <!-- name of the table for gromacs run -->
>> >       <gromacs>
>> >         <table>table_A_A.xvg</table>
>> >       </gromacs>
>> >     </inverse>
>> >   </non-bonded>
>> >
>> >
>> > Best regards,
>> > Changwoon Jang,
>> >
>> > --
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>>
>>
>> --
>> Christoph Junghans
>> Web: http://www.compphys.de
>>
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>
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-- 
Christoph Junghans
Web: http://www.compphys.de

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