Re: [gmx-users] Using Charmm 36 forcefield on Gromacs 4.6 or higher

2013-08-02 Thread Mark Abraham
On Thu, Aug 1, 2013 at 10:10 PM, akk5r  wrote:
> Hi All,
>
> I am trying to run a membrane protein simulation on Gromacs 4.6 using the
> Charmm 36 force field parameters.
>
> I found the following parameters on the gromacs mailing list for Charmm 36:
> *; nblist cut-off
> rlist= 1.2
> ; long-range cut-off for switched potentials
> rlistlong= 1.4
>
> ; OPTIONS FOR ELECTROSTATICS AND VDW
> ; Method for doing electrostatics
> coulombtype  = PME
> rcoulomb-switch  = 0
> rcoulomb = 1.2
> ; Relative dielectric constant for the medium and the reaction field
> epsilon_r= 1
> epsilon_rf   = 1
> ; Method for doing Van der Waals
> vdw-type = switch
> ; cut-off lengths
> rvdw-switch  = 0.8
> rvdw = 1.2
> ; Apply long range dispersion corrections for Energy and Pressure
> DispCorr = No *
>
>
>
>
> Putting these setting into my .mdp file, I then get this error on grompp:
>
> *ERROR 1 [file nvt.mdp]:
>   With Verlet lists only cut-off LJ interactions are supported*
>
> I then turned off the Verlet cut-off scheme and was able to create a .tpr
> file.

That's up to you, of course. Your other option is to use Verlet and a
plain cut-off at 1.2nm; over the distance from 0.8 and 1.2, the
difference between plain cutoff and force-shifted VDW is probably
irrelevant anyway.

> Then I ran my .tpr on mdrun and got the following error:
>
> *Program mdrun, VERSION 4.6.1
> Source code file: /home/akk5r/Downloads/gromacs-4.6.1/src/kernel/runner.c,
> line: 824
>
> Fatal error:
> OpenMP threads have been requested with cut-off scheme Group, but these are
> only supported with cut-off scheme Verlet
> For more information and tips for troubleshooting, please check the GROMACS
> website at http://www.gromacs.org/Documentation/Errors*
>
> At this point, I don't know what to do. I have to run this job on a cluster
> system due to the size of the system.

Sure, but your commands to your cluster are setting up the environment
with OMP_NUMTHREADS>1. With the group scheme, you want one MPI rank
per core.

Mark

> Does any one know how to run Charmm 36
> simulations on Gromacs 4.6 or higher using Verlet cut-off scheme?
>
> Best Wishes,
> Ali
>
>
>
> --
> View this message in context: 
> http://gromacs.5086.x6.nabble.com/Using-Charmm-36-forcefield-on-Gromacs-4-6-or-higher-tp5010290.html
> Sent from the GROMACS Users Forum mailing list archive at Nabble.com.
> --
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Re: [gmx-users] Using Charmm 36 forcefield on Gromacs 4.6 or higher

2013-08-01 Thread Justin Lemkul



On 8/1/13 4:10 PM, akk5r wrote:

Hi All,

I am trying to run a membrane protein simulation on Gromacs 4.6 using the
Charmm 36 force field parameters.

I found the following parameters on the gromacs mailing list for Charmm 36:
*; nblist cut-off
rlist= 1.2
; long-range cut-off for switched potentials
rlistlong= 1.4

; OPTIONS FOR ELECTROSTATICS AND VDW
; Method for doing electrostatics
coulombtype  = PME
rcoulomb-switch  = 0
rcoulomb = 1.2
; Relative dielectric constant for the medium and the reaction field
epsilon_r= 1
epsilon_rf   = 1
; Method for doing Van der Waals
vdw-type = switch
; cut-off lengths
rvdw-switch  = 0.8
rvdw = 1.2
; Apply long range dispersion corrections for Energy and Pressure
DispCorr = No *




Putting these setting into my .mdp file, I then get this error on grompp:

*ERROR 1 [file nvt.mdp]:
   With Verlet lists only cut-off LJ interactions are supported*

I then turned off the Verlet cut-off scheme and was able to create a .tpr
file.

Then I ran my .tpr on mdrun and got the following error:

*Program mdrun, VERSION 4.6.1
Source code file: /home/akk5r/Downloads/gromacs-4.6.1/src/kernel/runner.c,
line: 824

Fatal error:
OpenMP threads have been requested with cut-off scheme Group, but these are
only supported with cut-off scheme Verlet
For more information and tips for troubleshooting, please check the GROMACS
website at http://www.gromacs.org/Documentation/Errors*

At this point, I don't know what to do. I have to run this job on a cluster
system due to the size of the system. Does any one know how to run Charmm 36
simulations on Gromacs 4.6 or higher using Verlet cut-off scheme?



The error messages are inconsistent.  Can you please post a full .mdp file and 
your exact mdrun command?


-Justin

--
==

Justin A. Lemkul, Ph.D.
Postdoctoral Fellow

Department of Pharmaceutical Sciences
School of Pharmacy
Health Sciences Facility II, Room 601
University of Maryland, Baltimore
20 Penn St.
Baltimore, MD 21201

jalem...@outerbanks.umaryland.edu | (410) 706-7441

==
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Re: [gmx-users] Using Charmm 36 forcefield on Gromacs 4.6 or higher

2013-08-01 Thread francesco oteri
Hi,
just try to disable OpenMP threads, unsetting OMP_NUM_THREADS environment
variable

Francesco


2013/8/1 akk5r 

> Hi All,
>
> I am trying to run a membrane protein simulation on Gromacs 4.6 using the
> Charmm 36 force field parameters.
>
> I found the following parameters on the gromacs mailing list for Charmm 36:
> *; nblist cut-off
> rlist= 1.2
> ; long-range cut-off for switched potentials
> rlistlong= 1.4
>
> ; OPTIONS FOR ELECTROSTATICS AND VDW
> ; Method for doing electrostatics
> coulombtype  = PME
> rcoulomb-switch  = 0
> rcoulomb = 1.2
> ; Relative dielectric constant for the medium and the reaction field
> epsilon_r= 1
> epsilon_rf   = 1
> ; Method for doing Van der Waals
> vdw-type = switch
> ; cut-off lengths
> rvdw-switch  = 0.8
> rvdw = 1.2
> ; Apply long range dispersion corrections for Energy and Pressure
> DispCorr = No *
>
>
>
>
> Putting these setting into my .mdp file, I then get this error on grompp:
>
> *ERROR 1 [file nvt.mdp]:
>   With Verlet lists only cut-off LJ interactions are supported*
>
> I then turned off the Verlet cut-off scheme and was able to create a .tpr
> file.
>
> Then I ran my .tpr on mdrun and got the following error:
>
> *Program mdrun, VERSION 4.6.1
> Source code file: /home/akk5r/Downloads/gromacs-4.6.1/src/kernel/runner.c,
> line: 824
>
> Fatal error:
> OpenMP threads have been requested with cut-off scheme Group, but these are
> only supported with cut-off scheme Verlet
> For more information and tips for troubleshooting, please check the GROMACS
> website at http://www.gromacs.org/Documentation/Errors*
>
> At this point, I don't know what to do. I have to run this job on a cluster
> system due to the size of the system. Does any one know how to run Charmm
> 36
> simulations on Gromacs 4.6 or higher using Verlet cut-off scheme?
>
> Best Wishes,
> Ali
>
>
>
> --
> View this message in context:
> http://gromacs.5086.x6.nabble.com/Using-Charmm-36-forcefield-on-Gromacs-4-6-or-higher-tp5010290.html
> Sent from the GROMACS Users Forum mailing list archive at Nabble.com.
> --
> gmx-users mailing listgmx-users@gromacs.org
> http://lists.gromacs.org/mailman/listinfo/gmx-users
> * Please search the archive at
> http://www.gromacs.org/Support/Mailing_Lists/Search before posting!
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> www interface or send it to gmx-users-requ...@gromacs.org.
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>



-- 
Oteri Francesco, PhD
https://sites.google.com/site/francescooteri
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[gmx-users] Using Charmm 36 forcefield on Gromacs 4.6 or higher

2013-08-01 Thread akk5r
Hi All,

I am trying to run a membrane protein simulation on Gromacs 4.6 using the
Charmm 36 force field parameters. 

I found the following parameters on the gromacs mailing list for Charmm 36:
*; nblist cut-off 
rlist= 1.2 
; long-range cut-off for switched potentials 
rlistlong= 1.4 

; OPTIONS FOR ELECTROSTATICS AND VDW 
; Method for doing electrostatics 
coulombtype  = PME 
rcoulomb-switch  = 0 
rcoulomb = 1.2 
; Relative dielectric constant for the medium and the reaction field 
epsilon_r= 1 
epsilon_rf   = 1 
; Method for doing Van der Waals 
vdw-type = switch 
; cut-off lengths 
rvdw-switch  = 0.8 
rvdw = 1.2 
; Apply long range dispersion corrections for Energy and Pressure 
DispCorr = No *




Putting these setting into my .mdp file, I then get this error on grompp:

*ERROR 1 [file nvt.mdp]:
  With Verlet lists only cut-off LJ interactions are supported*

I then turned off the Verlet cut-off scheme and was able to create a .tpr
file. 

Then I ran my .tpr on mdrun and got the following error:

*Program mdrun, VERSION 4.6.1
Source code file: /home/akk5r/Downloads/gromacs-4.6.1/src/kernel/runner.c,
line: 824

Fatal error:
OpenMP threads have been requested with cut-off scheme Group, but these are
only supported with cut-off scheme Verlet
For more information and tips for troubleshooting, please check the GROMACS
website at http://www.gromacs.org/Documentation/Errors*

At this point, I don't know what to do. I have to run this job on a cluster
system due to the size of the system. Does any one know how to run Charmm 36
simulations on Gromacs 4.6 or higher using Verlet cut-off scheme?

Best Wishes,
Ali



--
View this message in context: 
http://gromacs.5086.x6.nabble.com/Using-Charmm-36-forcefield-on-Gromacs-4-6-or-higher-tp5010290.html
Sent from the GROMACS Users Forum mailing list archive at Nabble.com.
-- 
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* Please search the archive at 
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