On Wed, Jul 21, 2021 at 9:56 AM Mohsen Farshad <[email protected]> wrote:
>
> Thanks for the explanation. I have still some difficulty understanding the 
> process, and I have the following questions:
>
> 1. Are C6 and C12 are literally summed up ("+") or they are just combined 
> during the FM process --- essentially they have not ever gotten separated?
Yes, FM has no mechanism to distinguish them.

>
> 2. Does the FM technique aim to extract a table potential for CG system from 
> the atomistic system with matching the forces? Can we use this extracted FM 
> potential table for CG simulations --- not IBI, just normal CG MD simulation? 
> If so would you please let me know how can I use this potential table to run 
> CG simulations and what files are needed for that?

See my answer in the next email.
>
> Thank you,
> Mohsen
>
> On Tue, Jul 20, 2021 at 5:07 PM Christoph Junghans <[email protected]> wrote:
>>
>> On Tue, Jul 20, 2021 at 8:47 AM Mohsen Farshad <[email protected]> 
>> wrote:
>> >
>> > Thanks for the explanation. I am a bit confused. Is there any repulsion 
>> > term in the Votca potential? Would you please explain what kind of 
>> > potential is that?
>>
>> Gromacs just has the C6 and C12 tables columns, but in the case of
>> VOTCA we just add the C6 and C12 parts together and you can make one
>> of them zero.
>> (see 
>> https://manual.gromacs.org/documentation/2019.5/reference-manual/special/tabulated-interaction-functions.html#user-specified-potential-functions)
>> Basically because it is not easy to separate the C6 from the C12 part
>> and also because you can do some funky things by using the C6 part for
>> something else.
>>
>> >
>> > Also in SPCE tutorial, to run CG simulation, it is suggested to use the 
>> > files for ibi example. I have a few questions in regards to this part of 
>> > the tutorial:
>> >
>> > 1. What command should I use to run coarse grain:
>> >
>> > "gmx grompp"  and then "gmx mdrun -v"
>> This runs a MD simulation directly only use that after coarse-graining
>> or for atomistic simulation.
>>
>> >
>> > or "csg_inverse --options settings.xml"
>> This is the right command to do IBI
>>
>> >
>> > 1. Would you explicitly explain how should I adjust the settings.xml to 
>> > make it compatible with the potential table that comes from FM. The 
>> > current IBI setting.xml uses IBI interactive algorithm. Is that needed to 
>> > run CG simulation using FM potential? --- if setting.xml is not needed 
>> > please ignore this question.
>>
>> FM is a different CG method than IBI. FM is one shot and done, while
>> IBI is iterative.
>> You could use the FM potential as a starting potential for IBI, but
>> this is kind of pointless as FM matches the forces, while IBI matches
>> the structure.
>>
>> >
>> > 3. For CG simulation the CG configuration should be used or atomistic one?
>> The CG one.
>>
>> Christoph
>>
>> >
>> > Thank you,
>> > Mohsen
>> >
>> >
>> > On Mon, Jul 19, 2021 at 10:38 PM Christoph Junghans <[email protected]> 
>> > wrote:
>> >>
>> >> On Mon, Jul 19, 2021 at 5:47 PM Mohsen Farshad <[email protected]> 
>> >> wrote:
>> >> >
>> >> > Here are the potential, force, and output potentials. Would you please 
>> >> > let me know whether they are correct?
>> >> The outcomes are actually correct.
>> >>
>> >> Your forces and the potential ends at 0.9nm and so is the xvg file.
>> >> The values smaller than 0.9nm are not zero.
>> >> We shift the potential in such a way that it is zero at the cutoff,
>> >> hence all values for r> 0.9nm are zero.
>> >> We put the values in the C12 column of the gromacs xvg table, hence
>> >> columns 2-5 are empty and only columns 6+7 have numbers.
>> >>
>> >> Christoph
>> >> >
>> >> > Thank you,
>> >> > Mohsen
>> >> >
>> >> > On Mon, Jul 19, 2021 at 6:34 PM Christoph Junghans <[email protected]> 
>> >> > wrote:
>> >> >>
>> >> >> On Mon, Jul 19, 2021 at 3:04 PM Mohsen Farshad 
>> >> >> <[email protected]> wrote:
>> >> >> >
>> >> >> > Hi Christoph,
>> >> >> >
>> >> >> > I was able to install the Votca using Spack. However, going through 
>> >> >> > the tutorial I confronted an error after executing the following 
>> >> >> > command:
>> >> >> >
>> >> >> > csg_call table integrate CG-CG.force CG-CG.pot
>> >> >> >
>> >> >> > The last lines of the error is as follows:
>> >> >> >
>> >> >> >   #000: 
>> >> >> > /tmp/tuo98996/spack-stage/spack-stage-hdf5-1.10.7-3mcrng3jtezm72xs2i2fbwpwzogxsupf/spack-src/src/H5T.c
>> >> >> >  line 1708 in H5Tcopy(): not a datatype or dataset
>> >> >> >
>> >> >> >     major: Invalid arguments to routine
>> >> >> >
>> >> >> >     minor: Inappropriate type
>> >> >> >
>> >> >> > Running subscript 'table_integrate.pl CG-CG.force CG-CG.pot' (from 
>> >> >> > tags table integrate) dir 
>> >> >> > /home/tuo98996/spack/opt/spack/linux-centos7-broadwell/gcc-9.3.0/votca-csg-stable-7slgbunnjcw6657pwdjeshozxpfzi3d5/share/votca/scripts/invers
>> >> >> >
>> >> >> >
>> >> >> > The resulting CG table potential is zero for all the distances.
>> >> >> The integrate script will only act on the first valid point, usually
>> >> >> marked with "i" in the last column of the force table.
>> >> >> So that might be the problem. Otherwise send us the force table and we
>> >> >> can have a look as well.
>> >> >>
>> >> >> Christoph
>> >> >>
>> >> >> >
>> >> >> >
>> >> >> > Looking forward to your feedback,
>> >> >> >
>> >> >> >
>> >> >> > Thanks,
>> >> >> >
>> >> >> > Mohsen
>> >> >> >
>> >> >> >
>> >> >> >
>> >> >> >
>> >> >> > On Thu, Jul 15, 2021 at 7:02 PM Christoph Junghans 
>> >> >> > <[email protected]> wrote:
>> >> >> >>
>> >> >> >> Can you run "spack cd -b votca-csg@stable" and look for a .log file 
>> >> >> >> in there?
>> >> >> >>
>> >> >> >> Christoph
>> >> >> >>
>> >> >> >> On Thu, Jul 15, 2021 at 2:42 PM Mohsen Farshad 
>> >> >> >> <[email protected]> wrote:
>> >> >> >> >
>> >> >> >> > On the cluster, the run is not ending now. In my own machine, it 
>> >> >> >> > says:
>> >> >> >> >
>> >> >> >> > ==> Error: votca-csg-stable-t3g3evics7o4vvqtxxunsnx2p67u56bg: 
>> >> >> >> > Package was not installed
>> >> >> >> >
>> >> >> >> > ==> Error: Installation request failed.  Refer to reported errors 
>> >> >> >> > for failing package(s).
>> >> >> >> >
>> >> >> >> >
>> >> >> >> > The last comment on the cluster is following:
>> >> >> >> >
>> >> >> >> > [+] 
>> >> >> >> > /home/tuo98996/spack/opt/spack/linux-centos7-haswell/gcc-4.8.5/gromacs-2019.6-xtfitykzurvzarvflpj2v6cu3wywr5fc
>> >> >> >> >
>> >> >> >> >
>> >> >> >> >
>> >> >> >> > On Thu, Jul 15, 2021 at 4:38 PM Christoph Junghans 
>> >> >> >> > <[email protected]> wrote:
>> >> >> >> >>
>> >> >> >> >> On Thu, Jul 15, 2021 at 2:34 PM Mohsen Farshad 
>> >> >> >> >> <[email protected]> wrote:
>> >> >> >> >> >
>> >> >> >> >> > Hi Christoph,
>> >> >> >> >> >
>> >> >> >> >> > After cloning Spack I inserted the following commands on my 
>> >> >> >> >> > own machine and the cluster, but neither machines were able to 
>> >> >> >> >> > successfully complete the installation after a relatively long 
>> >> >> >> >> > time.
>> >> >> >> >> >
>> >> >> >> >> > git clone https://github.com/spack/spack.git spack
>> >> >> >> >> > source spack/share/spack/setup-env.sh
>> >> >> >> >> > spack install votca-csg@stable
>> >> >> >> >> >
>> >> >> >> >> > Do you think there is something wrong with the compiler or I 
>> >> >> >> >> > am missing some commands and installation is more complicated 
>> >> >> >> >> > than I am thinking of?
>> >> >> >> >>
>> >> >> >> >> Can you post the error message?
>> >> >> >> >>
>> >> >> >> >> Christoph
>> >> >> >> >> >
>> >> >> >> >> > I have made sure the Spack is updated.
>> >> >> >> >> >
>> >> >> >> >> > Looking forward to hearing from you,
>> >> >> >> >> >
>> >> >> >> >> > Thanks,
>> >> >> >> >> > Mohsen
>> >> >> >> >> >
>> >> >> >> >> > On Sat, Jul 10, 2021 at 10:01 AM Christoph Junghans 
>> >> >> >> >> > <[email protected]> wrote:
>> >> >> >> >> >>
>> >> >> >> >> >> On Fri, Jul 9, 2021 at 3:52 PM Christoph Junghans 
>> >> >> >> >> >> <[email protected]> wrote:
>> >> >> >> >> >> >
>> >> >> >> >> >> > On Fri, Jul 9, 2021 at 3:42 PM Mohsen Farshad 
>> >> >> >> >> >> > <[email protected]> wrote:
>> >> >> >> >> >> > >
>> >> >> >> >> >> > > Hi Votca developers,
>> >> >> >> >> >> > >
>> >> >> >> >> >> > > Is there a way to solve this issue without the need for 
>> >> >> >> >> >> > > installation of "votca@stable" using spack?
>> >> >> >> >> >> > Not really, we really have to make a 2021.1 release and 
>> >> >> >> >> >> > bump the spackage.
>> >> >> >> >> >> > Alternatively, you could apply the code change of the patch
>> >> >> >> >> >> > (https://github.com/votca/tools/commit/6bb7e35ba7d1a31247eafb323be2777ec0439cfe)
>> >> >> >> >> >> > manually.
>> >> >> >> >> >> > I also made a quick fix in spack: 
>> >> >> >> >> >> > https://github.com/spack/spack/pull/24815
>> >> >> >> >> >> > Once that is merged, you should be good to go.
>> >> >> >> >> >> The fix is part of spack now, just pull the latest version of 
>> >> >> >> >> >> spack
>> >> >> >> >> >> and everything should be fine.
>> >> >> >> >> >>
>> >> >> >> >> >> >
>> >> >> >> >> >> > Christoph
>> >> >> >> >> >> >
>> >> >> >> >> >> > >
>> >> >> >> >> >> > > Thanks,
>> >> >> >> >> >> > > Mohsen
>> >> >> >> >> >> > > ---------- Forwarded message ---------
>> >> >> >> >> >> > > From: [email protected] <Unknown>
>> >> >> >> >> >> > > Date: Thursday, July 8, 2021 at 6:09:31 PM UTC-4
>> >> >> >> >> >> > > Subject: C++ Compiler issue
>> >> >> >> >> >> > > To: [email protected] <Unknown>
>> >> >> >> >> >> > >
>> >> >> >> >> >> > >
>> >> >> >> >> >> > > Hi Votca developers,
>> >> >> >> >> >> > >
>> >> >> >> >> >> > > My question: C++ Compiler issue: I am trying to install 
>> >> >> >> >> >> > > VOTCA on a supercomputer using spack. I am getting a C++ 
>> >> >> >> >> >> > > error. Could you please have a look at the attached log 
>> >> >> >> >> >> > > file? I am trying to figure out what my next steps are.
>> >> >> >> >> >> > >
>> >> >> >> >> >> > > Response from Christoph:  The issue you found is already 
>> >> >> >> >> >> > > fixed (see
>> >> >> >> >> >> > > https://github.com/votca/tools/pull/361), but not part of 
>> >> >> >> >> >> > > a release
>> >> >> >> >> >> > > yet.
>> >> >> >> >> >> > > You can install "votca@stable" using spack to get the fix.
>> >> >> >> >> >> > >
>> >> >> >> >> >> > > Apologies for the test email.
>> >> >> >> >> >> > >
>> >> >> >> >> >> > > Thank you
>> >> >> >> >> >> > > Akash
>> >> >> >> >> >> > >
>> >> >> >> >> >> > > --
>> >> >> >> >> >> > > Join us on Slack: https://join.slack.com/t/votca/signup
>> >> >> >> >> >> > > ---
>> >> >> >> >> >> > > You received this message because you are subscribed to 
>> >> >> >> >> >> > > the Google Groups "votca" group.
>> >> >> >> >> >> > > To unsubscribe from this group and stop receiving emails 
>> >> >> >> >> >> > > from it, send an email to 
>> >> >> >> >> >> > > [email protected].
>> >> >> >> >> >> > > To view this discussion on the web visit 
>> >> >> >> >> >> > > https://groups.google.com/d/msgid/votca/4ee1f111-852d-4526-9920-55cfe9b110e9n%40googlegroups.com.
>> >> >> >> >> >> >
>> >> >> >> >> >> >
>> >> >> >> >> >> >
>> >> >> >> >> >> > --
>> >> >> >> >> >> > Christoph Junghans
>> >> >> >> >> >> > Web: http://www.compphys.de
>> >> >> >> >> >>
>> >> >> >> >> >>
>> >> >> >> >> >>
>> >> >> >> >> >> --
>> >> >> >> >> >> Christoph Junghans
>> >> >> >> >> >> Web: http://www.compphys.de
>> >> >> >> >> >>
>> >> >> >> >> >> --
>> >> >> >> >> >> Join us on Slack: https://join.slack.com/t/votca/signup
>> >> >> >> >> >> ---
>> >> >> >> >> >> You received this message because you are subscribed to the 
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>> >> >> >> >> >> To unsubscribe from this group and stop receiving emails from 
>> >> >> >> >> >> it, send an email to [email protected].
>> >> >> >> >> >> To view this discussion on the web visit 
>> >> >> >> >> >> https://groups.google.com/d/msgid/votca/CAHG27e42Gj-VuA2sudLLec34W8J5RNuu0ocod9C8aee7jwoMEg%40mail.gmail.com.
>> >> >> >> >> >
>> >> >> >> >> > --
>> >> >> >> >> > Join us on Slack: https://join.slack.com/t/votca/signup
>> >> >> >> >> > ---
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>> >> >> >> >> > To unsubscribe from this group and stop receiving emails from 
>> >> >> >> >> > it, send an email to [email protected].
>> >> >> >> >> > To view this discussion on the web visit 
>> >> >> >> >> > https://groups.google.com/d/msgid/votca/CAAbE4DpAJGCt-_E9RLcOQOA8QQ0jDcsm4AyHtHVfGN4JMZiqdA%40mail.gmail.com.
>> >> >> >> >>
>> >> >> >> >>
>> >> >> >> >>
>> >> >> >> >> --
>> >> >> >> >> Christoph Junghans
>> >> >> >> >> Web: http://www.compphys.de
>> >> >> >> >>
>> >> >> >> >> --
>> >> >> >> >> Join us on Slack: https://join.slack.com/t/votca/signup
>> >> >> >> >> ---
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>> >> >> >> >> it, send an email to [email protected].
>> >> >> >> >> To view this discussion on the web visit 
>> >> >> >> >> https://groups.google.com/d/msgid/votca/CAHG27e4cEtmjOuKO3QEMgoHsZSyAJ%3Dp5%2BPS2bihs25p6S%3DkZSA%40mail.gmail.com.
>> >> >> >> >
>> >> >> >> > --
>> >> >> >> > Join us on Slack: https://join.slack.com/t/votca/signup
>> >> >> >> > ---
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>> >> >> >> > To unsubscribe from this group and stop receiving emails from it, 
>> >> >> >> > send an email to [email protected].
>> >> >> >> > To view this discussion on the web visit 
>> >> >> >> > https://groups.google.com/d/msgid/votca/CAAbE4Dq6vsiEjqxsJGoVLawnA4VwPzLaCbO7zn3Avn2xJoa5rg%40mail.gmail.com.
>> >> >> >>
>> >> >> >>
>> >> >> >>
>> >> >> >> --
>> >> >> >> Christoph Junghans
>> >> >> >> Web: http://www.compphys.de
>> >> >> >>
>> >> >> >> --
>> >> >> >> Join us on Slack: https://join.slack.com/t/votca/signup
>> >> >> >> ---
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>> >> >> >> Groups "votca" group.
>> >> >> >> To unsubscribe from this group and stop receiving emails from it, 
>> >> >> >> send an email to [email protected].
>> >> >> >> To view this discussion on the web visit 
>> >> >> >> https://groups.google.com/d/msgid/votca/CAHG27e6UhCYcqbPEb5tNk7E4dS6-4OZGzmtA9tjc7zUNsAcg2A%40mail.gmail.com.
>> >> >> >
>> >> >> > --
>> >> >> > Join us on Slack: https://join.slack.com/t/votca/signup
>> >> >> > ---
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>> >> >> > Groups "votca" group.
>> >> >> > To unsubscribe from this group and stop receiving emails from it, 
>> >> >> > send an email to [email protected].
>> >> >> > To view this discussion on the web visit 
>> >> >> > https://groups.google.com/d/msgid/votca/CAAbE4DqTUn3QnuN1QFwb6UBnouvgbFzAJWfb9YeuL8sPNc7LvQ%40mail.gmail.com.
>> >> >>
>> >> >>
>> >> >>
>> >> >> --
>> >> >> Christoph Junghans
>> >> >> Web: http://www.compphys.de
>> >> >>
>> >> >> --
>> >> >> Join us on Slack: https://join.slack.com/t/votca/signup
>> >> >> ---
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>> >> >> an email to [email protected].
>> >> >> To view this discussion on the web visit 
>> >> >> https://groups.google.com/d/msgid/votca/CAHG27e67gFfpCoCrSE3LqRUd_JJkxhzrX%2BiZjaXqWPZL6KSTXQ%40mail.gmail.com.
>> >> >
>> >> >
>> >> >
>> >> > --
>> >> > Mohsen Farshad
>> >> > Ph.D. Chemistry
>> >> > University of Maine
>> >> >
>> >> > --
>> >> > Join us on Slack: https://join.slack.com/t/votca/signup
>> >> > ---
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>> >> > Groups "votca" group.
>> >> > To unsubscribe from this group and stop receiving emails from it, send 
>> >> > an email to [email protected].
>> >> > To view this discussion on the web visit 
>> >> > https://groups.google.com/d/msgid/votca/CAAbE4Dr9PXU%3D7j4%3D0TP-azBAHucna2WoWpZxz%3DCGqReCrGnaFA%40mail.gmail.com.
>> >>
>> >>
>> >>
>> >> --
>> >> Christoph Junghans
>> >> Web: http://www.compphys.de
>> >>
>> >> --
>> >> Join us on Slack: https://join.slack.com/t/votca/signup
>> >> ---
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>> >> "votca" group.
>> >> To unsubscribe from this group and stop receiving emails from it, send an 
>> >> email to [email protected].
>> >> To view this discussion on the web visit 
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>> >
>> > --
>> > Join us on Slack: https://join.slack.com/t/votca/signup
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>> > email to [email protected].
>> > To view this discussion on the web visit 
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>>
>>
>>
>> --
>> Christoph Junghans
>> Web: http://www.compphys.de
>>
>> --
>> Join us on Slack: https://join.slack.com/t/votca/signup
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>
>
>
> --
> Mohsen Farshad
> Ph.D. Chemistry
> University of Maine
>
> --
> Join us on Slack: https://join.slack.com/t/votca/signup
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-- 
Christoph Junghans
Web: http://www.compphys.de

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