Re: [gmx-users] Help for gmx enemat

2016-01-14 Thread valerio di giulio
Hi Justin,

You are right!! Thanks a lot!! Your help was precious.
Again thanks.

Valerio

2016-01-14 18:26 GMT+01:00 Justin Lemkul :

>
>
> On 1/14/16 12:18 PM, valerio di giulio wrote:
>
>> Hi Justin,
>>
>> I need the LJ potential just between the two DNAs, instead gmx energy
>> calculates the total LJ energy. Is it right?
>>
>>
> gmx energy does what you tell it.  You specified DNA1 and DNA2 as
> energygrps, therefore all short-range nonbonded interaction energies are
> decomposed.  This is actually no different than what you were trying to do
> with gmx enemat, except that enemat is a more roundabout way to obtain what
> you want.  The information you need is in the .edr file; gmx energy is the
> first port of call for extracting anything related to energy.
>
> -Justin
>
> Valerio
>>
>> Il giovedì 14 gennaio 2016, Justin Lemkul > > ha scritto:
>>
>>
>>
>>>
>>> On 1/14/16 4:48 AM, Peter Stern wrote:
>>>
>>> Hi Valerio,
>>>>
>>>> Sorry, I don't know then.
>>>>
>>>> Peter
>>>>
>>>> -Original Message-
>>>> From: gromacs.org_gmx-users-boun...@maillist.sys.kth.se [mailto:
>>>> gromacs.org_gmx-users-boun...@maillist.sys.kth.se] On Behalf Of valerio
>>>> di giulio
>>>> Sent: Wednesday, January 13, 2016 11:17 PM
>>>> To: gmx-us...@gromacs.org
>>>> Subject: Re: [gmx-users] Help for gmx enemat
>>>>
>>>> Hi Peter,
>>>>
>>>> I have already created  an index file with make_ndx in which I specify
>>>> what atoms are in DNA1 and DNA2 groups. Moreover the two groups are
>>>> present
>>>> in the file topol.top. Indeed GROMACS doesn't produce any error about
>>>> the
>>>> declaration of them in the file .mdp. I send you also my topol.top file
>>>> for
>>>> clarity:
>>>>
>>>>
>>> You don't need g_enemat to get the numbers you want.  Just use g_energy;
>>> there's no point in plotting them as a matrix when all you need are the
>>> values.
>>>
>>> -Justin
>>>
>>> .
>>>
>>>>
>>>> ; GROMACS topology
>>>> ;
>>>> ; Include the force field
>>>> #include "/amber03.ff/forcefield.itp"
>>>>
>>>> ; Include chain topologies
>>>> #include "topol1.itp"
>>>> #include "topol2.itp"
>>>>
>>>> ; Include water topology
>>>> #include "amber03.ff/tip4p.itp"
>>>>
>>>> ; Include generic ion topology
>>>> #include "amber03.ff/ions.itp"
>>>>
>>>> [ system ]
>>>> Two all-AT in water
>>>>
>>>> [ molecules ]
>>>> DNA11
>>>> DNA21
>>>> SOL 39390
>>>> NA   190
>>>> CL   146
>>>>
>>>> .
>>>>
>>>> Thanks,
>>>>
>>>> Valerio
>>>>
>>>> 2016-01-13 20:40 GMT+01:00 Peter Stern :
>>>>
>>>> I believe that you need to define which nucleotides are in each group
>>>>
>>>>> DNA1 and DNA2 using make_ndx, since those are not "default" groups.  I
>>>>> think that you can do this and then do an Metin -rerun just to define
>>>>> the new groups.
>>>>>
>>>>> Peter
>>>>>
>>>>> Sent from my iPad
>>>>>
>>>>> On 13 בינו׳ 2016, at 20:53, valerio di giulio
>>>>>
>>>>>> 
>>>>>>
>>>>>> wrote:
>>>>>
>>>>>
>>>>>> Hi,
>>>>>>
>>>>>> I have a problem with the use of "gmx enemat". I'm trying to
>>>>>> calculate the contribution of SH-LJ to the potential that exists
>>>>>> between two DNA strands with GROMACS 5.1.1. I've already got a
>>>>>> Potential of Mean Force doing an umbrella sampling.
>>>>>> For this reason I have already many files .edr each one linked to a
>>>>>>
>>>>>> window,
>>>>>
>>>>> from
>>>>>> which I would like to extract the SH-LJ contribution but every time
>>>>>

Re: [gmx-users] Help for gmx enemat

2016-01-14 Thread Justin Lemkul



On 1/14/16 12:18 PM, valerio di giulio wrote:

Hi Justin,

I need the LJ potential just between the two DNAs, instead gmx energy
calculates the total LJ energy. Is it right?



gmx energy does what you tell it.  You specified DNA1 and DNA2 as energygrps, 
therefore all short-range nonbonded interaction energies are decomposed.  This 
is actually no different than what you were trying to do with gmx enemat, except 
that enemat is a more roundabout way to obtain what you want.  The information 
you need is in the .edr file; gmx energy is the first port of call for 
extracting anything related to energy.


-Justin


Valerio

Il giovedì 14 gennaio 2016, Justin Lemkul > ha scritto:




On 1/14/16 4:48 AM, Peter Stern wrote:


Hi Valerio,

Sorry, I don't know then.

Peter

-Original Message-
From: gromacs.org_gmx-users-boun...@maillist.sys.kth.se [mailto:
gromacs.org_gmx-users-boun...@maillist.sys.kth.se] On Behalf Of valerio
di giulio
Sent: Wednesday, January 13, 2016 11:17 PM
To: gmx-us...@gromacs.org
Subject: Re: [gmx-users] Help for gmx enemat

Hi Peter,

I have already created  an index file with make_ndx in which I specify
what atoms are in DNA1 and DNA2 groups. Moreover the two groups are present
in the file topol.top. Indeed GROMACS doesn't produce any error about the
declaration of them in the file .mdp. I send you also my topol.top file for
clarity:



You don't need g_enemat to get the numbers you want.  Just use g_energy;
there's no point in plotting them as a matrix when all you need are the
values.

-Justin

.


; GROMACS topology
;
; Include the force field
#include "/amber03.ff/forcefield.itp"

; Include chain topologies
#include "topol1.itp"
#include "topol2.itp"

; Include water topology
#include "amber03.ff/tip4p.itp"

; Include generic ion topology
#include "amber03.ff/ions.itp"

[ system ]
Two all-AT in water

[ molecules ]
DNA11
DNA21
SOL 39390
NA   190
CL   146

.

Thanks,

Valerio

2016-01-13 20:40 GMT+01:00 Peter Stern :

I believe that you need to define which nucleotides are in each group

DNA1 and DNA2 using make_ndx, since those are not "default" groups.  I
think that you can do this and then do an Metin -rerun just to define
the new groups.

Peter

Sent from my iPad

On 13 בינו׳ 2016, at 20:53, valerio di giulio




wrote:



Hi,

I have a problem with the use of "gmx enemat". I'm trying to
calculate the contribution of SH-LJ to the potential that exists
between two DNA strands with GROMACS 5.1.1. I've already got a
Potential of Mean Force doing an umbrella sampling.
For this reason I have already many files .edr each one linked to a


window,


from
which I would like to extract the SH-LJ contribution but every time
I use "enemat" this is the output:

..

GROMACS:  gmx enemat, VERSION 5.1.1
Executable:   /usr/local/gromacs/bin/gmx
Data prefix:  /usr/local/gromacs
Command line:
   gmx enemat umbrella1e.edr -ljsr

Opened ener.edr as single precision energy file Will read groupnames
from inputfile Read 2 groups group 0WARNING! could not find group
Coul-SR:DNA1-DNA1 (0,0)in energy


file


WARNING! could not find group LJ-SR:DNA1-DNA1 (0,0)in energy file
WARNING! could not find group Coul-SR:DNA1-DNA2 (0,1)in energy file
WARNING! could not find group LJ-SR:DNA1-DNA2 (0,1)in energy file
group 1WARNING! could not find group Coul-SR:DNA2-DNA2 (1,1)in
energy


file


WARNING! could not find group LJ-SR:DNA2-DNA2 (1,1)in energy file

Will select half-matrix of energies with 0 elements Last energy
frame read 500 time  500.000 Will build energy half-matrix of 2
groups, 0 elements, over 501 frames Segmentation fault (core dumped)

...

Although I have written to the .mdp file:

energygrps = DNA1 DNA2

Thank you in advance,

Valerio Di Giulio
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[gmx-users] Help for gmx enemat

2016-01-14 Thread valerio di giulio
Hi Justin,

I need the LJ potential just between the two DNAs, instead gmx energy
calculates the total LJ energy. Is it right?

Valerio

Il giovedì 14 gennaio 2016, Justin Lemkul > ha scritto:

>
>
> On 1/14/16 4:48 AM, Peter Stern wrote:
>
>> Hi Valerio,
>>
>> Sorry, I don't know then.
>>
>> Peter
>>
>> -Original Message-
>> From: gromacs.org_gmx-users-boun...@maillist.sys.kth.se [mailto:
>> gromacs.org_gmx-users-boun...@maillist.sys.kth.se] On Behalf Of valerio
>> di giulio
>> Sent: Wednesday, January 13, 2016 11:17 PM
>> To: gmx-us...@gromacs.org
>> Subject: Re: [gmx-users] Help for gmx enemat
>>
>> Hi Peter,
>>
>> I have already created  an index file with make_ndx in which I specify
>> what atoms are in DNA1 and DNA2 groups. Moreover the two groups are present
>> in the file topol.top. Indeed GROMACS doesn't produce any error about the
>> declaration of them in the file .mdp. I send you also my topol.top file for
>> clarity:
>>
>
> You don't need g_enemat to get the numbers you want.  Just use g_energy;
> there's no point in plotting them as a matrix when all you need are the
> values.
>
> -Justin
>
> .
>>
>> ; GROMACS topology
>> ;
>> ; Include the force field
>> #include "/amber03.ff/forcefield.itp"
>>
>> ; Include chain topologies
>> #include "topol1.itp"
>> #include "topol2.itp"
>>
>> ; Include water topology
>> #include "amber03.ff/tip4p.itp"
>>
>> ; Include generic ion topology
>> #include "amber03.ff/ions.itp"
>>
>> [ system ]
>> Two all-AT in water
>>
>> [ molecules ]
>> DNA11
>> DNA21
>> SOL 39390
>> NA   190
>> CL   146
>>
>> .
>>
>> Thanks,
>>
>> Valerio
>>
>> 2016-01-13 20:40 GMT+01:00 Peter Stern :
>>
>> I believe that you need to define which nucleotides are in each group
>>> DNA1 and DNA2 using make_ndx, since those are not "default" groups.  I
>>> think that you can do this and then do an Metin -rerun just to define
>>> the new groups.
>>>
>>> Peter
>>>
>>> Sent from my iPad
>>>
>>> On 13 בינו׳ 2016, at 20:53, valerio di giulio
>>>> 
>>>>
>>> wrote:
>>>
>>>>
>>>> Hi,
>>>>
>>>> I have a problem with the use of "gmx enemat". I'm trying to
>>>> calculate the contribution of SH-LJ to the potential that exists
>>>> between two DNA strands with GROMACS 5.1.1. I've already got a
>>>> Potential of Mean Force doing an umbrella sampling.
>>>> For this reason I have already many files .edr each one linked to a
>>>>
>>> window,
>>>
>>>> from
>>>> which I would like to extract the SH-LJ contribution but every time
>>>> I use "enemat" this is the output:
>>>>
>>>> ..
>>>>
>>>> GROMACS:  gmx enemat, VERSION 5.1.1
>>>> Executable:   /usr/local/gromacs/bin/gmx
>>>> Data prefix:  /usr/local/gromacs
>>>> Command line:
>>>>   gmx enemat umbrella1e.edr -ljsr
>>>>
>>>> Opened ener.edr as single precision energy file Will read groupnames
>>>> from inputfile Read 2 groups group 0WARNING! could not find group
>>>> Coul-SR:DNA1-DNA1 (0,0)in energy
>>>>
>>> file
>>>
>>>> WARNING! could not find group LJ-SR:DNA1-DNA1 (0,0)in energy file
>>>> WARNING! could not find group Coul-SR:DNA1-DNA2 (0,1)in energy file
>>>> WARNING! could not find group LJ-SR:DNA1-DNA2 (0,1)in energy file
>>>> group 1WARNING! could not find group Coul-SR:DNA2-DNA2 (1,1)in
>>>> energy
>>>>
>>> file
>>>
>>>> WARNING! could not find group LJ-SR:DNA2-DNA2 (1,1)in energy file
>>>>
>>>> Will select half-matrix of energies with 0 elements Last energy
>>>> frame read 500 time  500.000 Will build energy half-matrix of 2
>>>> groups, 0 elements, over 501 frames Segmentation fault (core dumped)
>>>>
>>>> ...
>>>>
>>>> Although I have written to the .mdp file:
>>>>
>>>> energygrps = DNA1 DNA2
>>>>
>>>>

Re: [gmx-users] Help for gmx enemat

2016-01-14 Thread Justin Lemkul



On 1/14/16 4:48 AM, Peter Stern wrote:

Hi Valerio,

Sorry, I don't know then.

Peter

-Original Message-
From: gromacs.org_gmx-users-boun...@maillist.sys.kth.se 
[mailto:gromacs.org_gmx-users-boun...@maillist.sys.kth.se] On Behalf Of valerio 
di giulio
Sent: Wednesday, January 13, 2016 11:17 PM
To: gmx-us...@gromacs.org
Subject: Re: [gmx-users] Help for gmx enemat

Hi Peter,

I have already created  an index file with make_ndx in which I specify what 
atoms are in DNA1 and DNA2 groups. Moreover the two groups are present in the 
file topol.top. Indeed GROMACS doesn't produce any error about the declaration 
of them in the file .mdp. I send you also my topol.top file for clarity:


You don't need g_enemat to get the numbers you want.  Just use g_energy; there's 
no point in plotting them as a matrix when all you need are the values.


-Justin


.

; GROMACS topology
;
; Include the force field
#include "/amber03.ff/forcefield.itp"

; Include chain topologies
#include "topol1.itp"
#include "topol2.itp"

; Include water topology
#include "amber03.ff/tip4p.itp"

; Include generic ion topology
#include "amber03.ff/ions.itp"

[ system ]
Two all-AT in water

[ molecules ]
DNA11
DNA21
SOL 39390
NA   190
CL   146

.

Thanks,

Valerio

2016-01-13 20:40 GMT+01:00 Peter Stern :


I believe that you need to define which nucleotides are in each group
DNA1 and DNA2 using make_ndx, since those are not "default" groups.  I
think that you can do this and then do an Metin -rerun just to define
the new groups.

Peter

Sent from my iPad


On 13 בינו׳ 2016, at 20:53, valerio di giulio


wrote:


Hi,

I have a problem with the use of "gmx enemat". I'm trying to
calculate the contribution of SH-LJ to the potential that exists
between two DNA strands with GROMACS 5.1.1. I've already got a
Potential of Mean Force doing an umbrella sampling.
For this reason I have already many files .edr each one linked to a

window,

from
which I would like to extract the SH-LJ contribution but every time
I use "enemat" this is the output:

..

GROMACS:  gmx enemat, VERSION 5.1.1
Executable:   /usr/local/gromacs/bin/gmx
Data prefix:  /usr/local/gromacs
Command line:
  gmx enemat umbrella1e.edr -ljsr

Opened ener.edr as single precision energy file Will read groupnames
from inputfile Read 2 groups group 0WARNING! could not find group
Coul-SR:DNA1-DNA1 (0,0)in energy

file

WARNING! could not find group LJ-SR:DNA1-DNA1 (0,0)in energy file
WARNING! could not find group Coul-SR:DNA1-DNA2 (0,1)in energy file
WARNING! could not find group LJ-SR:DNA1-DNA2 (0,1)in energy file
group 1WARNING! could not find group Coul-SR:DNA2-DNA2 (1,1)in
energy

file

WARNING! could not find group LJ-SR:DNA2-DNA2 (1,1)in energy file

Will select half-matrix of energies with 0 elements Last energy
frame read 500 time  500.000 Will build energy half-matrix of 2
groups, 0 elements, over 501 frames Segmentation fault (core dumped)

...

Although I have written to the .mdp file:

energygrps = DNA1 DNA2

Thank you in advance,

Valerio Di Giulio
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--
==

Justin A. Lemkul, Ph.D.
Ruth L. Kirschstein NRSA Postdoctoral Fellow

Department of Pharmaceutical Sciences
School of Pharmacy
Health Sciences Facility II, Room 629
University of Maryland, Baltimore
20 Penn St.
Baltimore, MD 21201

jalem...@outerbanks.umaryland.edu | (410) 706-7441
http://mackerell.umaryland.edu/~jalemkul

==
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Re: [gmx-users] Help for gmx enemat

2016-01-14 Thread Peter Stern
Hi Valerio,

Sorry, I don't know then.

Peter

-Original Message-
From: gromacs.org_gmx-users-boun...@maillist.sys.kth.se 
[mailto:gromacs.org_gmx-users-boun...@maillist.sys.kth.se] On Behalf Of valerio 
di giulio
Sent: Wednesday, January 13, 2016 11:17 PM
To: gmx-us...@gromacs.org
Subject: Re: [gmx-users] Help for gmx enemat

Hi Peter,

I have already created  an index file with make_ndx in which I specify what 
atoms are in DNA1 and DNA2 groups. Moreover the two groups are present in the 
file topol.top. Indeed GROMACS doesn't produce any error about the declaration 
of them in the file .mdp. I send you also my topol.top file for clarity:
.

; GROMACS topology
;
; Include the force field
#include "/amber03.ff/forcefield.itp"

; Include chain topologies
#include "topol1.itp"
#include "topol2.itp"

; Include water topology
#include "amber03.ff/tip4p.itp"

; Include generic ion topology
#include "amber03.ff/ions.itp"

[ system ]
Two all-AT in water

[ molecules ]
DNA11
DNA21
SOL 39390
NA   190
CL   146

.

Thanks,

Valerio

2016-01-13 20:40 GMT+01:00 Peter Stern :

> I believe that you need to define which nucleotides are in each group 
> DNA1 and DNA2 using make_ndx, since those are not "default" groups.  I 
> think that you can do this and then do an Metin -rerun just to define 
> the new groups.
>
> Peter
>
> Sent from my iPad
>
> > On 13 בינו׳ 2016, at 20:53, valerio di giulio 
> > 
> wrote:
> >
> > Hi,
> >
> > I have a problem with the use of "gmx enemat". I'm trying to 
> > calculate the contribution of SH-LJ to the potential that exists 
> > between two DNA strands with GROMACS 5.1.1. I've already got a 
> > Potential of Mean Force doing an umbrella sampling.
> > For this reason I have already many files .edr each one linked to a
> window,
> > from
> > which I would like to extract the SH-LJ contribution but every time 
> > I use "enemat" this is the output:
> >
> > ..
> >
> > GROMACS:  gmx enemat, VERSION 5.1.1
> > Executable:   /usr/local/gromacs/bin/gmx
> > Data prefix:  /usr/local/gromacs
> > Command line:
> >  gmx enemat umbrella1e.edr -ljsr
> >
> > Opened ener.edr as single precision energy file Will read groupnames 
> > from inputfile Read 2 groups group 0WARNING! could not find group 
> > Coul-SR:DNA1-DNA1 (0,0)in energy
> file
> > WARNING! could not find group LJ-SR:DNA1-DNA1 (0,0)in energy file 
> > WARNING! could not find group Coul-SR:DNA1-DNA2 (0,1)in energy file 
> > WARNING! could not find group LJ-SR:DNA1-DNA2 (0,1)in energy file 
> > group 1WARNING! could not find group Coul-SR:DNA2-DNA2 (1,1)in 
> > energy
> file
> > WARNING! could not find group LJ-SR:DNA2-DNA2 (1,1)in energy file
> >
> > Will select half-matrix of energies with 0 elements Last energy 
> > frame read 500 time  500.000 Will build energy half-matrix of 2 
> > groups, 0 elements, over 501 frames Segmentation fault (core dumped)
> >
> > ...
> >
> > Although I have written to the .mdp file:
> >
> > energygrps = DNA1 DNA2
> >
> > Thank you in advance,
> >
> > Valerio Di Giulio
> > --
> > Gromacs Users mailing list
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Re: [gmx-users] Help for gmx enemat

2016-01-13 Thread valerio di giulio
Hi Peter,

I have already created  an index file with make_ndx in which I specify
what atoms are in DNA1 and DNA2 groups. Moreover the two groups
are present in the file topol.top. Indeed GROMACS doesn't produce any
error about the declaration of them in the file .mdp. I send you also my
topol.top file
for clarity:
.

; GROMACS topology
;
; Include the force field
#include "/amber03.ff/forcefield.itp"

; Include chain topologies
#include "topol1.itp"
#include "topol2.itp"

; Include water topology
#include "amber03.ff/tip4p.itp"

; Include generic ion topology
#include "amber03.ff/ions.itp"

[ system ]
Two all-AT in water

[ molecules ]
DNA11
DNA21
SOL 39390
NA   190
CL   146

.

Thanks,

Valerio

2016-01-13 20:40 GMT+01:00 Peter Stern :

> I believe that you need to define which nucleotides are in each group DNA1
> and DNA2 using make_ndx, since those are not "default" groups.  I think
> that you can do this and then do an Metin -rerun just to define the new
> groups.
>
> Peter
>
> Sent from my iPad
>
> > On 13 בינו׳ 2016, at 20:53, valerio di giulio 
> wrote:
> >
> > Hi,
> >
> > I have a problem with the use of "gmx enemat". I'm trying to calculate
> > the contribution of SH-LJ to the potential that exists between two DNA
> > strands with GROMACS 5.1.1. I've already got a Potential of Mean Force
> > doing an umbrella sampling.
> > For this reason I have already many files .edr each one linked to a
> window,
> > from
> > which I would like to extract the SH-LJ contribution but every time I use
> > "enemat" this is the output:
> >
> > ..
> >
> > GROMACS:  gmx enemat, VERSION 5.1.1
> > Executable:   /usr/local/gromacs/bin/gmx
> > Data prefix:  /usr/local/gromacs
> > Command line:
> >  gmx enemat umbrella1e.edr -ljsr
> >
> > Opened ener.edr as single precision energy file
> > Will read groupnames from inputfile
> > Read 2 groups
> > group 0WARNING! could not find group Coul-SR:DNA1-DNA1 (0,0)in energy
> file
> > WARNING! could not find group LJ-SR:DNA1-DNA1 (0,0)in energy file
> > WARNING! could not find group Coul-SR:DNA1-DNA2 (0,1)in energy file
> > WARNING! could not find group LJ-SR:DNA1-DNA2 (0,1)in energy file
> > group 1WARNING! could not find group Coul-SR:DNA2-DNA2 (1,1)in energy
> file
> > WARNING! could not find group LJ-SR:DNA2-DNA2 (1,1)in energy file
> >
> > Will select half-matrix of energies with 0 elements
> > Last energy frame read 500 time  500.000
> > Will build energy half-matrix of 2 groups, 0 elements, over 501 frames
> > Segmentation fault (core dumped)
> >
> > ...
> >
> > Although I have written to the .mdp file:
> >
> > energygrps = DNA1 DNA2
> >
> > Thank you in advance,
> >
> > Valerio Di Giulio
> > --
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Re: [gmx-users] Help for gmx enemat

2016-01-13 Thread Peter Stern
I believe that you need to define which nucleotides are in each group DNA1 and 
DNA2 using make_ndx, since those are not "default" groups.  I think that you 
can do this and then do an Metin -rerun just to define the new groups.

Peter

Sent from my iPad

> On 13 בינו׳ 2016, at 20:53, valerio di giulio  
> wrote:
> 
> Hi,
> 
> I have a problem with the use of "gmx enemat". I'm trying to calculate
> the contribution of SH-LJ to the potential that exists between two DNA
> strands with GROMACS 5.1.1. I've already got a Potential of Mean Force
> doing an umbrella sampling.
> For this reason I have already many files .edr each one linked to a window,
> from
> which I would like to extract the SH-LJ contribution but every time I use
> "enemat" this is the output:
> 
> ..
> 
> GROMACS:  gmx enemat, VERSION 5.1.1
> Executable:   /usr/local/gromacs/bin/gmx
> Data prefix:  /usr/local/gromacs
> Command line:
>  gmx enemat umbrella1e.edr -ljsr
> 
> Opened ener.edr as single precision energy file
> Will read groupnames from inputfile
> Read 2 groups
> group 0WARNING! could not find group Coul-SR:DNA1-DNA1 (0,0)in energy file
> WARNING! could not find group LJ-SR:DNA1-DNA1 (0,0)in energy file
> WARNING! could not find group Coul-SR:DNA1-DNA2 (0,1)in energy file
> WARNING! could not find group LJ-SR:DNA1-DNA2 (0,1)in energy file
> group 1WARNING! could not find group Coul-SR:DNA2-DNA2 (1,1)in energy file
> WARNING! could not find group LJ-SR:DNA2-DNA2 (1,1)in energy file
> 
> Will select half-matrix of energies with 0 elements
> Last energy frame read 500 time  500.000
> Will build energy half-matrix of 2 groups, 0 elements, over 501 frames
> Segmentation fault (core dumped)
> 
> ...
> 
> Although I have written to the .mdp file:
> 
> energygrps = DNA1 DNA2
> 
> Thank you in advance,
> 
> Valerio Di Giulio
> -- 
> 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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[gmx-users] Help for gmx enemat

2016-01-13 Thread valerio di giulio
Hi,

I have a problem with the use of "gmx enemat". I'm trying to calculate
the contribution of SH-LJ to the potential that exists between two DNA
strands with GROMACS 5.1.1. I've already got a Potential of Mean Force
doing an umbrella sampling.
For this reason I have already many files .edr each one linked to a window,
from
which I would like to extract the SH-LJ contribution but every time I use
"enemat" this is the output:

..

GROMACS:  gmx enemat, VERSION 5.1.1
Executable:   /usr/local/gromacs/bin/gmx
Data prefix:  /usr/local/gromacs
Command line:
  gmx enemat umbrella1e.edr -ljsr

Opened ener.edr as single precision energy file
Will read groupnames from inputfile
Read 2 groups
group 0WARNING! could not find group Coul-SR:DNA1-DNA1 (0,0)in energy file
WARNING! could not find group LJ-SR:DNA1-DNA1 (0,0)in energy file
WARNING! could not find group Coul-SR:DNA1-DNA2 (0,1)in energy file
WARNING! could not find group LJ-SR:DNA1-DNA2 (0,1)in energy file
group 1WARNING! could not find group Coul-SR:DNA2-DNA2 (1,1)in energy file
WARNING! could not find group LJ-SR:DNA2-DNA2 (1,1)in energy file

Will select half-matrix of energies with 0 elements
Last energy frame read 500 time  500.000
Will build energy half-matrix of 2 groups, 0 elements, over 501 frames
Segmentation fault (core dumped)

...

Although I have written to the .mdp file:

energygrps = DNA1 DNA2

Thank you in advance,

Valerio Di Giulio
-- 
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