And yes, this is a bug: <https://code.google.com/p/votca/issues/detail?id=121>

Christoph

Am 9. November 2011 02:52 schrieb Sacha Mould <[email protected]>:
> Hi Christoph,
>
> it works!!!! Thanks so much!!!!
>
> All the best,
>
> Sacha
>
>
>
> On Nov 9, 3:19 am, Christoph Junghans <[email protected]> wrote:
>> Hi,
>>
>> try to replace:
>>                         <post_update>smooth</post_update>
>>                         <post_update>pressure</post_update>
>> by
>>                         <post_update>smooth pressure</post_update>
>>
>> Cheers,
>>
>> Christoph
>>
>> Am 8. November 2011 16:32 schrieb Sacha Mould <[email protected]>:
>>
>>
>>
>>
>>
>>
>>
>> > Hi all,
>>
>> > it seems that i figured it out. In my initial script i was calling two
>> > post-updates, 'smooth' and 'pressure':
>>
>> >                        <post_update>pressure</post_update>
>> >                        <post_update_options>
>> >                                <pressure>
>> >                                        <type>simple</type>
>> >                                        <do>0 0 1</do>
>> >                                        <simple>
>> >                                                <scale>0.37415295</
>> > scale>
>> >                                        </simple>
>> >                                </pressure>
>> >                        </post_update_options>
>> >                        <post_update>smooth</post_update>
>> >                        <post_update_options>
>> >                                <smooth>
>> >                                        <iterations>2</iterations>
>> >                                </smooth>
>> >                        </post_update_options>
>>
>> > In this case, the simulation will run, but only the 'smooth' post-
>> > update will perform and the 'pressure correction will be ignored. In
>> > case i change the order and put the pressure correction after the
>> > smooth, the simulation will through me the error that i posted on the
>> > earlier message. So, i decided to put both of them between the same
>> > <post-update-options> section, like this:
>>
>> >                        <post_update_options>
>> >                                <smooth>
>> >                                        <iterations>2</iterations>
>> >                                </smooth>
>> >                                <pressure>
>> >                                        <type>wjk</type>
>> >                                        <do>1 0 0</do>
>> >                                        <wjk>
>> >                                                <scale>-0.355861028</scale>
>> >                                        </wjk>
>> >                                </pressure>
>> >                        </post_update_options>
>>
>> > In that case, the pressure correction will be performed without a
>> > problem, but the smoothing fails. If i again change the order of them,
>> > this time putting the pressure post-update first, smoothing will be
>> > performed and pressure correction will fail. It seems that i can't
>> > call those two post-updates, because votca will only accept one of
>> > them, usually the one that is assigned at last.
>>
>> > Many regards,
>>
>> > Sacha
>>
>> > On Nov 8, 7:43 pm, Victor Ruehle <[email protected]> wrote:
>> >> Hmm, looks alright to me. I vaguely remember there was a bug in
>> >> pressure correction which christoph fixed middle of october. How old
>> >> is your installation? An upgrade might help....
>>
>> >>http://csg.votca.googlecode.com/hg-history/default/share/scripts/inve...
>> >> is the newest one, you could compare with your votca installation in
>> >> <votca-path>/share/scripts/inverse/pressure_cor_simple.pl
>>
>> >> Victor
>>
>> >> 2011/11/8 Sacha Mould <[email protected]>:
>>
>> >> > Hi Sebastian,
>>
>> >> > sure i can share my script. In this case i'm using only one type of
>> >> > bonded interaction (B-B). All the beads are the same, with the same
>> >> > mass. Here it goes the script:
>>
>> >> > <cg>
>> >> >        <non-bonded>
>> >> >                <name>B-B</name>
>> >> >                <type1>B</type1>
>> >> >                <type2>B</type2>
>> >> >                <min>0</min>
>> >> >                <max>1.5</max>
>> >> >                <step>0.001</step>
>> >> >                <inverse>
>> >> >                        <target>B-B.dist.tgt</target>
>> >> >                        <do_potential>0 1 0</do_potential>
>> >> >                        <post_update>pressure</post_update>
>> >> >                        <post_update_options>
>> >> >                                <pressure>
>> >> >                                        <type>simple</type>
>> >> >                                        <do>0 0 1</do>
>> >> >                                        <simple>
>> >> >                                                <scale>0.37415295</scale>
>> >> >                                        </simple>
>> >> >                                </pressure>
>> >> >                        </post_update_options>
>> >> >                        <post_update>smooth</post_update>
>> >> >                        <post_update_options>
>> >> >                                <smooth>
>> >> >                                        <iterations>2</iterations>
>> >> >                                </smooth>
>> >> >                        </post_update_options>
>> >> >                        <post_update_options></post_update_options>
>> >> >                        <post_add>convergence</post_add>
>> >> >                        <post_add_options></post_add_options>
>> >> >                        <p_target>1</p_target>
>> >> >                        <particle_dens>3.2965079</particle_dens>
>> >> >                        <gromacs>
>> >> >                                <table>table_B_B.xvg</table>
>> >> >                        </gromacs>
>> >> >                </inverse>
>> >> >        </non-bonded>
>> >> >        <inverse>
>> >> >                <kBT>3.55861028</kBT>
>> >> >                <program>gromacs</program>
>> >> >                <gromacs>
>> >> >                        <equi_time>10</equi_time>
>> >> >                        <table_bins>0.001</table_bins>
>> >> >                        <pot_max>1000000</pot_max>
>> >> >                        <table_end>2.5</table_end>
>> >> >                        <temp_check>no</temp_check>
>> >> >                        <cutoff_check>no</cutoff_check>
>> >> >                </gromacs>
>> >> >                <filelist>grompp.mdp topol.top table.xvg table_a1.xvg 
>> >> > table_b1.xvg
>> >> > index.ndx</filelist>
>> >> >                <iterations_max>500</iterations_max>
>> >> >                <convergence_check>default</convergence_check>
>> >> >                <convergence_check_options>
>> >> >                        <limit>0.001</limit>
>> >> >                        <name_glob>*.conv</name_glob>
>> >> >                </convergence_check_options>
>> >> >                <method>ibi</method>
>> >> >                <log_file>inverse.log</log_file>
>> >> >                <restart_file>restart_points.log</restart_file>
>> >> >        </inverse>
>> >> > </cg>
>>
>> >> > Thanks a lot,
>>
>> >> > Sacha
>>
>> >> > On Nov 8, 7:07 pm, [email protected] wrote:
>> >> >> Hi Sascha,
>>
>> >> >> if I am not mistaken, I think you have to set the pressure correction
>> >> >> for each non-bonded interaction you are using. From your output it
>> >> >> seems to work for A-A, but fail for A-B  and B-B interactions. Try to
>> >> >> set the other two as well. If it still doesent work, please share your
>> >> >> full settings.xml file with us. If what I wrote helps, it seems to be
>> >> >> indeed a bug as it should be possible to pressure correct selected
>> >> >> interactions.
>>
>> >> >> Cheers
>> >> >> Sebastian
>>
>> >> >> > Hey Victor,
>>
>> >> >> > i put the pressure section in the <non-bonded> section of <inverse>
>> >> >> > and p_target is well written. I've tried now to run wjk pressure
>> >> >> > correction instead... same problem... but the strange thing is that
>> >> >> > when i set wjk votca tries to run 'pressure_cor_simple.pl' instead of
>> >> >> > 'pressure_cor_wjk.pl':
>>
>> >> >> > Energy                      Average   Err.Est.       RMSD  Tot-Drift
>> >> >> > -------------------------------------------------------------------------------
>> >> >> > Pressure                     169.74       0.51    57.1507    1.25074
>> >> >> > (bar)
>> >> >> > New pressure 169.74
>> >> >> > an error occurred:
>> >> >> > property not found: pressure
>> >> >> > an error occurred:
>> >> >> > property not found: pressure
>> >> >> > Apply simple pressure correction for interaction B-B
>> >> >> > Running subscript 'pressure_cor_simple.pl 169.74 B-
>> >> >> > B.pressure_correction'(from tags pressure_cor simple)
>> >> >> > csg_get_interaction_property: csg_property failed on getting value
>> >> >> > inverse.post_update_options.pressure.simple.scale and no default 
>> >> >> > given
>> >> >> > ##########################################################################################################################################################################
>> >> >> > #
>> >> >> > #
>> >> >> > #
>> >> >> > ERROR:
>> >> >> > #
>> >> >> > # do_external: subscript /home/lusiterrae/votca/share/votca/scripts/
>> >> >> > inverse/pressure_cor_simple.pl 169.74 B-B.pressure_correction (from
>> >> >> > tags pressure_cor simple) failed #
>> >> >> > #
>> >> >> > #
>> >> >> > ######################################################################################################################
>>
>> >> >> > I'm using Votca last release.
>>
>> >> >> > Is there any possibility of...
>>
>> read more »
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-- 
Christoph Junghans
Votca Core Developer

Web: http://www.votca.org

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