Re: [gmx-users] mac OS Catalina segmentation fault

2019-11-05 Thread Daskalakis Vangelis
Hi Paul,
Thank you for your e-mail. I forgot to note that without the plumed patch,
the situation remains still problematic. The vanilla versions produce the
same errors (segmentation faults), even without any specific input files.
Just running the command e.g. gmx(_mpi) grompp, or gmx(_mpi) trjconv
without any input files, a segmentation fault is produced, as it is in the
case also with specific input files. Some tools, like editconf (v. 2019.4),
just complain about missing input files, if none is given, but without a
segmentation fault, as it should be.
I attach the full CMake Config and log files.
I will try and open an issue on redmine.gromacs.org
thank you again,
Vangelis.

On Tue, Nov 5, 2019 at 11:30 PM Paul bauer  wrote:

> Hello,
>
> could you try running first with an unmodified version of GROMACS, so we
> can check if the PLUMED modifications are responsible for the crashes
> (unlikely for the tools, but we need to make sure)?
> If the vanilla versions are still crashing, can you supply us with some
> log files and input files/run scripts for the failures and open a new
> issue on redmine.gromacs.org?
>
> Also, can you share the full CMakeConfig file?
>
> Cheers
>
> Paul
>
> On 05/11/2019 21:10, Daskalakis Vangelis wrote:
> > Dear all,
> > I am running Mac OS Catalina 10.15.1 (Xcode 11.2 11B52). I have
> > successfully compiled several versions of Gromacs (5.1.5, 2018.8, or
> > 2019.4) patched with plumed (v.2.4.6 for 5.1.5, or v.2.5.3 for 2018/2019
> > versions). The compilations are completed without any errors, employing
> the
> > configuration:
> > # cmake .. -DGMX_BUILD_OWN_FFTW=ON -DGMX_MPI=on
> > -DCMAKE_INSTALL_PREFIX:PATH=/usr/local/gromacs -DCXX="$MPICXX"
> >
> > For example Gromacs v. 5.1.5 (but the same is happening on the other
> > versions), I get segmentation faults, when I just run some tools, like:
> >
> > [MacBook-Pro:33466] *** Process received signal ***
> > [MacBook-Pro:33466] Signal: Segmentation fault: 11 (11)
> > [MacBook-Pro:33466] Signal code:  (0)
> > [MacBook-Pro:33466] Failing at address: 0x0
> > [MacBook-Pro:33466] [ 0] 0   libsystem_platform.dylib
> >   0x7fff69e47b1d _sigtramp + 29
> > [MacBook-Pro:33466] [ 1] 0   libdyld.dylib
> > 0x7fff69c3730e dyld_stub_binder + 282
> > [MacBook-Pro:33466] [ 2] 0   libgromacs_mpi.1.5.0.dylib
> >   0x00010dd60f2e _ZN3gmx24CommandLineModuleManager3runEiPPc + 798
> > [MacBook-Pro:33466] [ 3] 0   gmx_mpi
> > 0x00010dcc39d1 main + 129
> > [MacBook-Pro:33466] [ 4] 0   libdyld.dylib
> > 0x7fff69c462e5 start + 1
> > [MacBook-Pro:33466] [ 5] 0   ???
> > 0x0002 0x0 + 2
> > [MacBook-Pro:33466] *** End of error message ***
> > zsh: segmentation fault  gmx_mpi trjconv
> >
> > switching MPI support on/ off on the configuration/ compilation stage
> does
> > not change the situation. Some tools are running smoothly, as editconf.
> > However others, have segmentation faults. Grompp is running on v.5.1.5,
> but
> > gives a segmantation fault on v. 2019.4.
> >
> > I would appreciate some help,
> > thank you,
> > Vangelis.
>
>
> --
> Paul Bauer, PhD
> GROMACS Release Manager
> KTH Stockholm, SciLifeLab
> 0046737308594
>
> --
> Gromacs Users mailing list
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[gmx-users] gmx gangle in a for loop

2019-11-05 Thread Alex
Dear all,
Could one kindly let me know how $i should come in gmx gangle used in a for
loop to avoid syntax errors?
I tested different flavors like "$i", "${i}", ..., and still the problem is
here.

#!/bin/bash/
for i in {1..1000}
do
gmx gangle -g1 vector -group1 'group $i and name C10 plus group $i
and name C20' -g2 vector -group2 'cog of group 0 plus cog of group $i' -n
ind.ndx -f ind.xtc -s ind.tpr -oav aver$i.xvg -oh hist$i.xvg
done

Thank you
Alex
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Re: [gmx-users] defining parameters in a separate itp file

2019-11-05 Thread Justin Lemkul



On 11/5/19 7:53 PM, Dave M wrote:

Hi Justin,

Will appreciate any suggestions about the error am getting with
distance_restraints.


Aside from using the pull code rather than this approach, I have no 
other suggestions.


-Justin


Thanks.

regards,
Dave

On Thu, Oct 31, 2019 at 1:39 AM Dave M  wrote:


Hi Justin,

Thanks, not sure [distance_restraints] also does not work for me. Though
pull code works (like shared by other user Mustafa in recent discussions).

My top files contain this:
[ intermolecular_interactions ]


[ distance_restraints ]

; ai aj type index type’ low up1 up2 fac

   1  155  10 1 0.0 0.3 0.4 1.0


I get this error:

NMR distance restraints with multiple copies of the same molecule are

currently only supported with ensemble averaging. If you just want to
restrain

distances between atom pairs using a flat-bottomed potential, use a
restraint

potential (bonds type 10) instead.

I do not have multiple copies of the same molecule (except water
molecules!) and the atom numbers here belong to two different molecules. I
also tried using type' = 2 but still error remains the same. Would have
been great if distance_restraints work as it seems to be bit cleaner way
than modifying a pull code. I want to keep number of small molecules near
to a rod like bigger molecule; just like beads on a string. So
distance_restraints or something similar will be great.

Dave

On Tue, Oct 29, 2019 at 5:45 AM Justin Lemkul  wrote:



On 10/28/19 6:21 PM, Dave M wrote:

Hi Justin,

Thanks for your reply but am getting error suggesting a intermolecular
chemical bond is not allowed:

Program: gmx grompp, version 2016.4

Source file: src/gromacs/gmxpreprocess/convparm.cpp (line 649)

Fatal error:

The intermolecular_interaction can not contain chemically bonding
interactions

[ molecules ]

; namenumber

molA 1

molB 1

W  2420


[intermolecular_interactions]

   [ bonds ]

  1 158 1  0.4  2000

This is coarse-grained model and as a simple test I used global atom
numbers between two water single particles (intermolecular) but I get

the

same error.

In that case, use a [distance_restraints] directive under
[intermolecular_interactions] (though this will limit your domain
decomposition setup) or use the pull code to maintain a restraint rather
than messing with the topology.

-Justin

--
==

Justin A. Lemkul, Ph.D.
Assistant Professor
Office: 301 Fralin Hall
Lab: 303 Engel Hall

Virginia Tech Department of Biochemistry
340 West Campus Dr.
Blacksburg, VA 24061

jalem...@vt.edu | (540) 231-3129
http://www.thelemkullab.com

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Assistant Professor
Office: 301 Fralin Hall
Lab: 303 Engel Hall

Virginia Tech Department of Biochemistry
340 West Campus Dr.
Blacksburg, VA 24061

jalem...@vt.edu | (540) 231-3129
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Re: [gmx-users] defining parameters in a separate itp file

2019-11-05 Thread Dave M
Hi Justin,

Will appreciate any suggestions about the error am getting with
distance_restraints.
Thanks.

regards,
Dave

On Thu, Oct 31, 2019 at 1:39 AM Dave M  wrote:

> Hi Justin,
>
> Thanks, not sure [distance_restraints] also does not work for me. Though
> pull code works (like shared by other user Mustafa in recent discussions).
>
> My top files contain this:
> [ intermolecular_interactions ]
>
>
> [ distance_restraints ]
>
> ; ai aj type index type’ low up1 up2 fac
>
>   1  155  10 1 0.0 0.3 0.4 1.0
>
>
> I get this error:
>
> NMR distance restraints with multiple copies of the same molecule are
>
> currently only supported with ensemble averaging. If you just want to
> restrain
>
> distances between atom pairs using a flat-bottomed potential, use a
> restraint
>
> potential (bonds type 10) instead.
>
> I do not have multiple copies of the same molecule (except water
> molecules!) and the atom numbers here belong to two different molecules. I
> also tried using type' = 2 but still error remains the same. Would have
> been great if distance_restraints work as it seems to be bit cleaner way
> than modifying a pull code. I want to keep number of small molecules near
> to a rod like bigger molecule; just like beads on a string. So
> distance_restraints or something similar will be great.
>
> Dave
>
> On Tue, Oct 29, 2019 at 5:45 AM Justin Lemkul  wrote:
>
>>
>>
>> On 10/28/19 6:21 PM, Dave M wrote:
>> > Hi Justin,
>> >
>> > Thanks for your reply but am getting error suggesting a intermolecular
>> > chemical bond is not allowed:
>> >
>> > Program: gmx grompp, version 2016.4
>> >
>> > Source file: src/gromacs/gmxpreprocess/convparm.cpp (line 649)
>> >
>> > Fatal error:
>> >
>> > The intermolecular_interaction can not contain chemically bonding
>> > interactions
>> >
>> > [ molecules ]
>> >
>> > ; namenumber
>> >
>> > molA 1
>> >
>> > molB 1
>> >
>> > W  2420
>> >
>> >
>> > [intermolecular_interactions]
>> >
>> >   [ bonds ]
>> >
>> >  1 158 1  0.4  2000
>> >
>> > This is coarse-grained model and as a simple test I used global atom
>> > numbers between two water single particles (intermolecular) but I get
>> the
>> > same error.
>>
>> In that case, use a [distance_restraints] directive under
>> [intermolecular_interactions] (though this will limit your domain
>> decomposition setup) or use the pull code to maintain a restraint rather
>> than messing with the topology.
>>
>> -Justin
>>
>> --
>> ==
>>
>> Justin A. Lemkul, Ph.D.
>> Assistant Professor
>> Office: 301 Fralin Hall
>> Lab: 303 Engel Hall
>>
>> Virginia Tech Department of Biochemistry
>> 340 West Campus Dr.
>> Blacksburg, VA 24061
>>
>> jalem...@vt.edu | (540) 231-3129
>> http://www.thelemkullab.com
>>
>> ==
>>
>> --
>> Gromacs Users mailing list
>>
>> * Please search the archive at
>> http://www.gromacs.org/Support/Mailing_Lists/GMX-Users_List before
>> posting!
>>
>> * Can't post? Read http://www.gromacs.org/Support/Mailing_Lists
>>
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>> send a mail to gmx-users-requ...@gromacs.org.
>>
>
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Re: [gmx-users] gromos force field

2019-11-05 Thread Patrick Fuchs

Hi,
I'm coming late, but I may add a few words. The GROMOS force fields have 
been parameterized with the GROMOS software using a twin-range cutoff 
(0.8/1.4), but this option is no longer available in recent versions of 
GROMACS. However, in a recent study 
(https://doi.org/10.1021/acs.jctc.8b00758), it was showed that using a 
single range cutoff (rlist = rcoulomb = rvdw = 1.4 and nstlist = 1) + 
reaction field (coulombtype = Generalized-Reaction-Field) together with 
the group scheme for neighbor searching (cutoff-scheme=group, even if 
this is deprecated since version 5.1, it is still usable) reproduces 
results generated with the GROMOS software and FF. One other study on 
lipids points to the same conclusion regarding the use of single range 
cutoff (https://doi.org/10.1021/acs.jctc.7b00178) as an alternative to 
twin-range cutoff. That was also tested in this redmine issue: 
https://redmine.gromacs.org/issues/1400. This solution increases 
significantly the computational cost compared to former twin-range 
cutoff, but it is probably the one which gives the closest results to 
the original GROMOS FF.
Alternatively, it was found in a recent paper 
(https://pubs.acs.org/doi/10.1021/acs.jctc.8b00425) that it is possible 
to use the Verlet scheme for neighbour searching with rvdw = 1.2 and PME 
for electrostatics (with rcoulomb = 1.2 since it has to equal rvdw) as 
an acceptable option to reproduce some liquid properties calculated with 
the GROMOS software.
Regarding the remark about the GROMOS software, I'm not aware of any 
"problems".

Best,

Patrick

Le 23/09/2019 à 12:49, Justin Lemkul a écrit :



On 9/21/19 12:44 PM, p buscemi wrote:

Dear Users,
I often use Gromos force field because ATB provides top files for 
reasonably large molecules - 1000 atoms. With Gromacs 2019.3 the 
error now appears:

The GROMOS force fields have been parametrized with a physically
incorrect multiple-time-stepping scheme for a twin-range cut-off. When
used with a single-range cut-off (or a correct Trotter
multiple-time-stepping scheme), physical properties, such as the 
density,

might differ from the intended values. Check if molecules in your system
are affected by such issues before proceeding. Further information 
may be

available at https://redmine.gromacs.org/issues/2884.

while message is clear enough, just how large an error in density is 
anticipated ? A 10 % error in polymer solution may be tolerable. A 2 
% error in a crystal or binding site may be a concern.
Gromacs indicated that Gromos may be dropped for v 2020. Is there no 
other option - llike fixing the time-stepping-scheme. Or must I not 
use the twin-cutoff typically presented in the mpd files ?
There is a conversion from Gromos top to Amber, but would not the 
error be translated as well ?


The problem is that the GROMOS force fields were derived using 
software that has problems, therefore rendering all of the behaviors 
of this force field in other software questionable. There should be a 
paper forthcoming from the core developers that describes the 
situation sometime soon.


-Justin



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Re: [gmx-users] mac OS Catalina segmentation fault

2019-11-05 Thread Paul bauer

Hello,

could you try running first with an unmodified version of GROMACS, so we 
can check if the PLUMED modifications are responsible for the crashes 
(unlikely for the tools, but we need to make sure)?
If the vanilla versions are still crashing, can you supply us with some 
log files and input files/run scripts for the failures and open a new 
issue on redmine.gromacs.org?


Also, can you share the full CMakeConfig file?

Cheers

Paul

On 05/11/2019 21:10, Daskalakis Vangelis wrote:

Dear all,
I am running Mac OS Catalina 10.15.1 (Xcode 11.2 11B52). I have
successfully compiled several versions of Gromacs (5.1.5, 2018.8, or
2019.4) patched with plumed (v.2.4.6 for 5.1.5, or v.2.5.3 for 2018/2019
versions). The compilations are completed without any errors, employing the
configuration:
# cmake .. -DGMX_BUILD_OWN_FFTW=ON -DGMX_MPI=on
-DCMAKE_INSTALL_PREFIX:PATH=/usr/local/gromacs -DCXX="$MPICXX"

For example Gromacs v. 5.1.5 (but the same is happening on the other
versions), I get segmentation faults, when I just run some tools, like:

[MacBook-Pro:33466] *** Process received signal ***
[MacBook-Pro:33466] Signal: Segmentation fault: 11 (11)
[MacBook-Pro:33466] Signal code:  (0)
[MacBook-Pro:33466] Failing at address: 0x0
[MacBook-Pro:33466] [ 0] 0   libsystem_platform.dylib
  0x7fff69e47b1d _sigtramp + 29
[MacBook-Pro:33466] [ 1] 0   libdyld.dylib
0x7fff69c3730e dyld_stub_binder + 282
[MacBook-Pro:33466] [ 2] 0   libgromacs_mpi.1.5.0.dylib
  0x00010dd60f2e _ZN3gmx24CommandLineModuleManager3runEiPPc + 798
[MacBook-Pro:33466] [ 3] 0   gmx_mpi
0x00010dcc39d1 main + 129
[MacBook-Pro:33466] [ 4] 0   libdyld.dylib
0x7fff69c462e5 start + 1
[MacBook-Pro:33466] [ 5] 0   ???
0x0002 0x0 + 2
[MacBook-Pro:33466] *** End of error message ***
zsh: segmentation fault  gmx_mpi trjconv

switching MPI support on/ off on the configuration/ compilation stage does
not change the situation. Some tools are running smoothly, as editconf.
However others, have segmentation faults. Grompp is running on v.5.1.5, but
gives a segmantation fault on v. 2019.4.

I would appreciate some help,
thank you,
Vangelis.



--
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GROMACS Release Manager
KTH Stockholm, SciLifeLab
0046737308594

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[gmx-users] mac OS Catalina segmentation fault

2019-11-05 Thread Daskalakis Vangelis
Dear all,
I am running Mac OS Catalina 10.15.1 (Xcode 11.2 11B52). I have
successfully compiled several versions of Gromacs (5.1.5, 2018.8, or
2019.4) patched with plumed (v.2.4.6 for 5.1.5, or v.2.5.3 for 2018/2019
versions). The compilations are completed without any errors, employing the
configuration:
# cmake .. -DGMX_BUILD_OWN_FFTW=ON -DGMX_MPI=on
-DCMAKE_INSTALL_PREFIX:PATH=/usr/local/gromacs -DCXX="$MPICXX"

For example Gromacs v. 5.1.5 (but the same is happening on the other
versions), I get segmentation faults, when I just run some tools, like:

[MacBook-Pro:33466] *** Process received signal ***
[MacBook-Pro:33466] Signal: Segmentation fault: 11 (11)
[MacBook-Pro:33466] Signal code:  (0)
[MacBook-Pro:33466] Failing at address: 0x0
[MacBook-Pro:33466] [ 0] 0   libsystem_platform.dylib
 0x7fff69e47b1d _sigtramp + 29
[MacBook-Pro:33466] [ 1] 0   libdyld.dylib
0x7fff69c3730e dyld_stub_binder + 282
[MacBook-Pro:33466] [ 2] 0   libgromacs_mpi.1.5.0.dylib
 0x00010dd60f2e _ZN3gmx24CommandLineModuleManager3runEiPPc + 798
[MacBook-Pro:33466] [ 3] 0   gmx_mpi
0x00010dcc39d1 main + 129
[MacBook-Pro:33466] [ 4] 0   libdyld.dylib
0x7fff69c462e5 start + 1
[MacBook-Pro:33466] [ 5] 0   ???
0x0002 0x0 + 2
[MacBook-Pro:33466] *** End of error message ***
zsh: segmentation fault  gmx_mpi trjconv

switching MPI support on/ off on the configuration/ compilation stage does
not change the situation. Some tools are running smoothly, as editconf.
However others, have segmentation faults. Grompp is running on v.5.1.5, but
gives a segmantation fault on v. 2019.4.

I would appreciate some help,
thank you,
Vangelis.
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Re: [gmx-users] Error in DNA.itp file

2019-11-05 Thread Justin Lemkul




On 11/5/19 11:55 AM, Najamuddin Memon wrote:

You may use Amber99sb force field  for DNA-protein simulation and also put
residue type.dat file in your folder. It will work



The nucleic acid parameter sets packaged with these GROMACS ports are 
wildly outdated. I suggest finding better parameters from other sources. 
People have ported AMBER parameters, though they should be checked 
thoroughly.


-Justin


On Tue, Nov 5, 2019, 6:59 PM Paul bauer  wrote:


Hello,

the error states that you are missing parameters for your system. Did
you check that the forcefield contains all the special parameters you
need for the conjugate molecule?
Also, I would recommend to not use a prehistoric version of GROMACS for
new studies, if there are no specific reasons preventing you from using
a more recent one that is still supported (such as 2018 or 2019).

Cheers

Paul

On 05/11/2019 14:47, Ayesha Kanwal wrote:

Hi all,
i am preparing system of DNA-protein complex, downloaded it from RCSB

website, by using GROMACS-version 4.5.5; force field AMBER03WS with water
Model TIP4P (2005). The DNA chain contains DA, DT, DG, DC atom type.

but the problem is that when i use command for energy minimization the

following error has occurred. Error shows that problem is in .itp file Dih.
types. For protein .itp files,there was no problem. Only DNA .itp files
have issue. Its my first time i am preparing this kind of system please let
me know how can i resolve this problem and why these errors were generated
? I have searched out previous mail but could not find relevant answer so i
am posting it now here. i have attached .mdp file with this e-mail.

checking input for internal consistency...
Generated 2412 of the 2415 non-bonded parameter combinations
Generating 1-4 interactions: fudge = 0.5
Generated 2415 of the 2415 1-4 parameter combinations

ERROR 1 [file dna-his_DNA_chain_I.itp, line 44148]:
No default Improper Dih. types


ERROR 2 [file dna-his_DNA_chain_J.itp, line 44148]:
No default Improper Dih. types



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--
==

Justin A. Lemkul, Ph.D.
Assistant Professor
Office: 301 Fralin Hall
Lab: 303 Engel Hall

Virginia Tech Department of Biochemistry
340 West Campus Dr.
Blacksburg, VA 24061

jalem...@vt.edu | (540) 231-3129
http://www.thelemkullab.com

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Re: [gmx-users] Error in DNA.itp file

2019-11-05 Thread Najamuddin Memon
Residue type.dat file having definition of nucleotides

On Tue, Nov 5, 2019, 9:55 PM Najamuddin Memon 
wrote:

> You may use Amber99sb force field  for DNA-protein simulation and also put
> residue type.dat file in your folder. It will work
>
>
> On Tue, Nov 5, 2019, 6:59 PM Paul bauer  wrote:
>
>> Hello,
>>
>> the error states that you are missing parameters for your system. Did
>> you check that the forcefield contains all the special parameters you
>> need for the conjugate molecule?
>> Also, I would recommend to not use a prehistoric version of GROMACS for
>> new studies, if there are no specific reasons preventing you from using
>> a more recent one that is still supported (such as 2018 or 2019).
>>
>> Cheers
>>
>> Paul
>>
>> On 05/11/2019 14:47, Ayesha Kanwal wrote:
>> > Hi all,
>> > i am preparing system of DNA-protein complex, downloaded it from RCSB
>> website, by using GROMACS-version 4.5.5; force field AMBER03WS with water
>> Model TIP4P (2005). The DNA chain contains DA, DT, DG, DC atom type.
>> > but the problem is that when i use command for energy minimization the
>> following error has occurred. Error shows that problem is in .itp file Dih.
>> types. For protein .itp files,there was no problem. Only DNA .itp files
>> have issue. Its my first time i am preparing this kind of system please let
>> me know how can i resolve this problem and why these errors were generated
>> ? I have searched out previous mail but could not find relevant answer so i
>> am posting it now here. i have attached .mdp file with this e-mail.
>> >
>> > checking input for internal consistency...
>> > Generated 2412 of the 2415 non-bonded parameter combinations
>> > Generating 1-4 interactions: fudge = 0.5
>> > Generated 2415 of the 2415 1-4 parameter combinations
>> >
>> > ERROR 1 [file dna-his_DNA_chain_I.itp, line 44148]:
>> >No default Improper Dih. types
>> >
>> >
>> > ERROR 2 [file dna-his_DNA_chain_J.itp, line 44148]:
>> >No default Improper Dih. types
>> >
>> >
>>
>> --
>> Paul Bauer, PhD
>> GROMACS Release Manager
>> KTH Stockholm, SciLifeLab
>> 0046737308594
>>
>> --
>> Gromacs Users mailing list
>>
>> * Please search the archive at
>> http://www.gromacs.org/Support/Mailing_Lists/GMX-Users_List before
>> posting!
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>> send a mail to gmx-users-requ...@gromacs.org.
>>
>
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Re: [gmx-users] Error in DNA.itp file

2019-11-05 Thread Najamuddin Memon
You may use Amber99sb force field  for DNA-protein simulation and also put
residue type.dat file in your folder. It will work


On Tue, Nov 5, 2019, 6:59 PM Paul bauer  wrote:

> Hello,
>
> the error states that you are missing parameters for your system. Did
> you check that the forcefield contains all the special parameters you
> need for the conjugate molecule?
> Also, I would recommend to not use a prehistoric version of GROMACS for
> new studies, if there are no specific reasons preventing you from using
> a more recent one that is still supported (such as 2018 or 2019).
>
> Cheers
>
> Paul
>
> On 05/11/2019 14:47, Ayesha Kanwal wrote:
> > Hi all,
> > i am preparing system of DNA-protein complex, downloaded it from RCSB
> website, by using GROMACS-version 4.5.5; force field AMBER03WS with water
> Model TIP4P (2005). The DNA chain contains DA, DT, DG, DC atom type.
> > but the problem is that when i use command for energy minimization the
> following error has occurred. Error shows that problem is in .itp file Dih.
> types. For protein .itp files,there was no problem. Only DNA .itp files
> have issue. Its my first time i am preparing this kind of system please let
> me know how can i resolve this problem and why these errors were generated
> ? I have searched out previous mail but could not find relevant answer so i
> am posting it now here. i have attached .mdp file with this e-mail.
> >
> > checking input for internal consistency...
> > Generated 2412 of the 2415 non-bonded parameter combinations
> > Generating 1-4 interactions: fudge = 0.5
> > Generated 2415 of the 2415 1-4 parameter combinations
> >
> > ERROR 1 [file dna-his_DNA_chain_I.itp, line 44148]:
> >No default Improper Dih. types
> >
> >
> > ERROR 2 [file dna-his_DNA_chain_J.itp, line 44148]:
> >No default Improper Dih. types
> >
> >
>
> --
> Paul Bauer, PhD
> GROMACS Release Manager
> KTH Stockholm, SciLifeLab
> 0046737308594
>
> --
> Gromacs Users mailing list
>
> * Please search the archive at
> http://www.gromacs.org/Support/Mailing_Lists/GMX-Users_List before
> posting!
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> send a mail to gmx-users-requ...@gromacs.org.
>
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Re: [gmx-users] Slurm for GROMACS

2019-11-05 Thread Mark Abraham
Hi,

SLURM and OpenMPI do different things. SLURM is a resource manager, from
which you might request multiple compute nodes. OpenMPI is a parallelism
library that allows a program to run on those nodes. GROMACS is the
program, and it doesn't care which MPI library is in use, or which resource
manager sits above that. So SLURM + OpenMPI + GROMACS is fine.

Mark

On Tue, 5 Nov 2019 at 14:51, Shradheya R.R. Gupta 
wrote:

> Researchers,
>  Is slrum required to run GROMACS on multiple computers or OpenMPI is fine?
>
> Thank you
> Shradheya
> DBT-BIF University of Rajasthan
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Re: [gmx-users] Error in DNA.itp file

2019-11-05 Thread Paul bauer

Hello,

the error states that you are missing parameters for your system. Did 
you check that the forcefield contains all the special parameters you 
need for the conjugate molecule?
Also, I would recommend to not use a prehistoric version of GROMACS for 
new studies, if there are no specific reasons preventing you from using 
a more recent one that is still supported (such as 2018 or 2019).


Cheers

Paul

On 05/11/2019 14:47, Ayesha Kanwal wrote:

Hi all,
i am preparing system of DNA-protein complex, downloaded it from RCSB website, 
by using GROMACS-version 4.5.5; force field AMBER03WS with water Model TIP4P 
(2005). The DNA chain contains DA, DT, DG, DC atom type.
but the problem is that when i use command for energy minimization the 
following error has occurred. Error shows that problem is in .itp file Dih. 
types. For protein .itp files,there was no problem. Only DNA .itp files have 
issue. Its my first time i am preparing this kind of system please let me know 
how can i resolve this problem and why these errors were generated ? I have 
searched out previous mail but could not find relevant answer so i am posting 
it now here. i have attached .mdp file with this e-mail.

checking input for internal consistency...
Generated 2412 of the 2415 non-bonded parameter combinations
Generating 1-4 interactions: fudge = 0.5
Generated 2415 of the 2415 1-4 parameter combinations

ERROR 1 [file dna-his_DNA_chain_I.itp, line 44148]:
   No default Improper Dih. types


ERROR 2 [file dna-his_DNA_chain_J.itp, line 44148]:
   No default Improper Dih. types




--
Paul Bauer, PhD
GROMACS Release Manager
KTH Stockholm, SciLifeLab
0046737308594

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[gmx-users] Slurm for GROMACS

2019-11-05 Thread Shradheya R.R. Gupta
Researchers,
 Is slrum required to run GROMACS on multiple computers or OpenMPI is fine?

Thank you
Shradheya
DBT-BIF University of Rajasthan
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[gmx-users] Error in DNA.itp file

2019-11-05 Thread Ayesha Kanwal
Hi all,
i am preparing system of DNA-protein complex, downloaded it from RCSB website, 
by using GROMACS-version 4.5.5; force field AMBER03WS with water Model TIP4P 
(2005). The DNA chain contains DA, DT, DG, DC atom type.
but the problem is that when i use command for energy minimization the 
following error has occurred. Error shows that problem is in .itp file Dih. 
types. For protein .itp files,there was no problem. Only DNA .itp files have 
issue. Its my first time i am preparing this kind of system please let me know 
how can i resolve this problem and why these errors were generated ? I have 
searched out previous mail but could not find relevant answer so i am posting 
it now here. i have attached .mdp file with this e-mail.

checking input for internal consistency...
Generated 2412 of the 2415 non-bonded parameter combinations
Generating 1-4 interactions: fudge = 0.5
Generated 2415 of the 2415 1-4 parameter combinations

ERROR 1 [file dna-his_DNA_chain_I.itp, line 44148]:
  No default Improper Dih. types


ERROR 2 [file dna-his_DNA_chain_J.itp, line 44148]:
  No default Improper Dih. types

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Re: [gmx-users] Ruuning MD simulation on laptop

2019-11-05 Thread Matthew Fisher
So the answer is yes, you can, but I'm not sure you should.

Assuming you have a mid to high end gaming laptop - say something like a 
i7-8750H with a Nvidia MaxQ 1070 (i.e. a Gigabyte Aero 15x or equivalent; I'm 
just going with what I have), you will get decent performance (I can get circa 
80 ns / day with 2018.6 and a 60k atom system & I'm sure 2019/2020 will improve 
this). However, this will absolutely thrash the system, and your GPU and CPU 
temperatures will be near the limits very quickly (mine hit 85-90 C within a 
couple minutes).

Prolonged usage at those temperatures will damage your laptop and your CPU will 
be forced to throttle (which is going to lower performance); hence why I only 
ever use my laptop for things like setting up simulations, analysis and testing 
methodologies on toy systems.

For the sake of your own personal hardware, get a desktop. It'll cost a lot 
less, stay cooler (so will be around for longer) and will have faster 
components. As this paper shows; you really don't need to spend a lot at all: 
https://onlinelibrary.wiley.com/doi/full/10.1002/jcc.26011

Hope that helps,
Matthew

From: gromacs.org_gmx-users-boun...@maillist.sys.kth.se 
 on behalf of Billy 
Williams-Noonan 
Sent: 05 November 2019 06:32
To: gmx-us...@gromacs.org 
Cc: gromacs.org_gmx-users@maillist.sys.kth.se 

Subject: Re: [gmx-users] Ruuning MD simulation on laptop

Commonly used gaming cards can accelerate MD simulations quote quickly, but
you'd be wanting to invest about a grand on one. There would also be a
problem with load imbalance then, where the CPUs are struggling to keep up
with the GPUs. So you'd want to have a decent number of decent quality
logical cores running alongside the GPU as well. You'd probably want to
spend at least AU$2000 on the lap top.

Cheers,
Billy

On Tue., 5 Nov. 2019, 5:22 pm Swapnil Bhujbal, 
wrote:

> Dear users,
>
> I'm a Ph.D. student. Usually, I do protein-ligand MD simulation for
> 50-100ns in my lab. So can I use any gaming laptop with a good graphics
> card in it for running the simulation? Would you recommend to install
> Gromacs on a GPU in a laptop?
> Your suggestions are highly appreciated.
> Thank you in advance.
>
> Sincerely,
> Mr. Swapnil Bhujbal
> PhD Scholar,
> School of Medicine,
> Chosun University,
> South Korea.
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[gmx-users] (no subject)

2019-11-05 Thread Ayesha Kanwal
Hi all,
i am preparing system of DNA-protein complex, downloaded it from RCSB website, 
by using GROMACS force field AMBER03WS with water Model TIP4P (2005). The DNA 
chain contains DA, DT, DG, DC atom type.
but the problem is that when i use command for energy minimization the 
following error has occurred. Error shows that problem is in .itp file Dih. 
types. Its my first time i am preparing this kind of system please let me know 
how can i resolve this problem and why this error generated ? I have searched 
out previous mail but could not find relevant answer so i am posting it now 
here. i have attached .mdp file with this e-mail.

checking input for internal consistency...
Generated 2412 of the 2415 non-bonded parameter combinations
Generating 1-4 interactions: fudge = 0.5
Generated 2415 of the 2415 1-4 parameter combinations

ERROR 1 [file dna-his_DNA_chain_I.itp, line 44148]:
  No default Improper Dih. types


ERROR 2 [file dna-his_DNA_chain_J.itp, line 44148]:
  No default Improper Dih. types

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Re: [gmx-users] Regarding force field for silicon oxide

2019-11-05 Thread David van der Spoel

Den 2019-11-05 kl. 01:59, skrev Mijiddorj B:

Dear Prof. David van der Spoel,

Thank you very much for your reply and sending an amazing work.
I am sorry for asking further questions. Can you give me an advice to use
the parameters which were considered in the ref#44 in this work?
Ref#44 uses the OPLS force field and expresses LJ parameters for the
contents.



The OPLS files for gromacs 4.6 contain this non-standard addition to 
nonbonded types
This is what was used in my paper and ref 44. Note that there is no 
GROMACS force field, so just refer to this as parameters used in those 
papers.


; Added by DvdS 05/2005 copied from GROMACS force field.
 SI SI 14   28.08000 0.000   A3.38550e-01 
2.44704e+00





Best regards,

Mijiddorj



--

Message: 4
Date: Fri, 1 Nov 2019 17:44:38 +0100
From: David van der Spoel 
To: gmx-us...@gromacs.org
Subject: Re: [gmx-users] Regarding force field for silicon oxide
Message-ID: <68c1ff39-9979-14ac-a1f9-eb1788be0...@xray.bmc.uu.se>
Content-Type: text/plain; charset=windows-1252; format=flowed

Den 2019-11-01 kl. 17:07, skrev Mijiddorj B:

I would like to simulate a system which contains a silicon oxide surface
and a polymer. Is it possible to simulate in gromacs?
I thought that GROMOS force field could be applied in this purpose. Is it
right? I am not sure.

If you have a potential function that supports it and software to build
topologies it works, e.g.:

David van der Spoel, Erik J. W. Wensink and Alex C. Hoffmann: Lifting a
glass from a wet table: a microscopic picture Langmuir 22 pp. 5666-5672
(2006) http://pubs.acs.org/cgi-bin/download.pl?la053284f/X8nx

However please do not ask me for the files :)



Also, is it possible to use InterfaceFF and Charmm force fields for this
system? I mean that the silicon oxide could be treated by InterfaceFF,

and

CharmmFF could be applied for polymer structure. Do you have any
experience, please let me advice.

Thanks for your help.

Best regards,
Mijiddorj




--
David van der Spoel, Ph.D., Professor of Biology
Head of Department, Cell & Molecular Biology, Uppsala University.
Box 596, SE-75124 Uppsala, Sweden. Phone: +46184714205.
http://www.icm.uu.se


--




--
David van der Spoel, Ph.D., Professor of Biology
Head of Department, Cell & Molecular Biology, Uppsala University.
Box 596, SE-75124 Uppsala, Sweden. Phone: +46184714205.
http://www.icm.uu.se
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