Re: [gmx-users] Can't observe ion separation under the influence of electric field

2020-02-12 Thread David van der Spoel
Den 2020-02-12 kl. 23:07, skrev Live King: Dear all, I am running a simple test case with a lipid bilayer (DMPC), water, and ions (150mM KCL) under the influence of a constant electric field ( 300mV, 500mV, and 700mV). *I expected positive and negative ions to separate in the presence of an

Re: [gmx-users] Estimation of configurational entropy

2020-02-12 Thread David van der Spoel
Den 2020-02-13 kl. 05:10, skrev Pathum Manjula Weerawarna: Hi everyone, I'm trying to estimate the configurational entropy of a small molecule using gmx anaeig. However, it does not allow me to use a mass-weighted covariance matrix for the calculation (only allow me to use mass-unweighted CV

[gmx-users] Estimation of configurational entropy

2020-02-12 Thread Pathum Manjula Weerawarna
Hi everyone, I'm trying to estimate the configurational entropy of a small molecule using gmx anaeig. However, it does not allow me to use a mass-weighted covariance matrix for the calculation (only allow me to use mass-unweighted CV matrix). Theoretically, the use of a mass unweighted CV

[gmx-users] Can't observe ion separation under the influence of electric field

2020-02-12 Thread Live King
Dear all, I am running a simple test case with a lipid bilayer (DMPC), water, and ions (150mM KCL) under the influence of a constant electric field ( 300mV, 500mV, and 700mV). *I expected positive and negative ions to separate in the presence of an external electric field*. However, I am not

[gmx-users] Tabulated potentials

2020-02-12 Thread Ali Khodayari
Dear Gromacs users, I’ve got a question regarding the tabulated potentials for bonded interactions. Gromacs recognises and reads the non-bonded potential tables through the energy groups specified. But how can I refer each bond type to its table? I have derived coarse-grained potentials for a

[gmx-users] Test particle insertion in a specific region

2020-02-12 Thread Sally Li
Dear Gromacs Users, I'm now simulating a water droplet with some vacuum space in a NVT ensemble. I'd like to calculate the excess free energy for different shells of the droplet via test particle insertion method, which I assume I should first calculate the COM of the droplet, and then divide the

Re: [gmx-users] generating Doxygen documentation

2020-02-12 Thread Michele Pellegrino
Paul, thank you very much! Cheers, Michele From: gromacs.org_gmx-users-boun...@maillist.sys.kth.se on behalf of Paul Bauer Sent: 12 February 2020 21:02 To: gmx-us...@gromacs.org Subject: Re: [gmx-users] generating Doxygen documentation The correct

Re: [gmx-users] generating Doxygen documentation

2020-02-12 Thread Paul Bauer
The correct address is http://jenkins.gromacs.org/job/Documentation_Nightly_master/javadoc/doxygen/html-full/index.xhtml Need to fix a link somewhere then I think. /Paul On Wed, 12 Feb 2020, 20:46 Michele Pellegrino, wrote: > Moreover: the link to Jenkins does not work (section 7.8.1,

Re: [gmx-users] generating Doxygen documentation

2020-02-12 Thread Michele Pellegrino
Moreover: the link to Jenkins does not work (section 7.8.1, "Building the documentation"): http://jenkins.gromacs.org/job/Documentation_Nightly_master/javadoc/html-lib/index.xhtml Cheers, Michele From: gromacs.org_gmx-users-boun...@maillist.sys.kth.se

Re: [gmx-users] generating Doxygen documentation

2020-02-12 Thread Michele Pellegrino
Mark, no such directory is produced after make (evein if the output is 'Built target doxygen-all'). The only Doxyfile I can utilize to generate html/latex documentation is 'Doxyfile-compact', while all others are still 'Doxyfile-*.cmakein'. It seems I need to run cmake somewhere, somehow, but

Re: [gmx-users] Call for Abstracts: SES - Advances in Polymer Modeling and Simulations (deadline March 17, 2020)

2020-02-12 Thread Jihong Ma
Sounds good. Thanks. On Wed, Feb 12, 2020 at 1:22 PM Paul bauer wrote: > Hello, > > please do ***NOT*** use the mailing list for those kinds of > announcements in the future. > It is supposed to be for people discussing and asking for help with > GROMACS, not for advertising conferences. > >

Re: [gmx-users] generating Doxygen documentation

2020-02-12 Thread Sergio Perez
I'm using Ubuntu 18.04.3 LTS On Wed, Feb 12, 2020 at 7:52 PM Benson Muite wrote: > > Hi, > What platform are you building on? Last time I tried this, there were a > few extra dependencies I needed to install. > Benson > > On Thu, Feb 13, 2020, at 12:34 AM, Mark Abraham wrote: > > Hi, > > > >

Re: [gmx-users] generating Doxygen documentation

2020-02-12 Thread Benson Muite
Hi, What platform are you building on? Last time I tried this, there were a few extra dependencies I needed to install. Benson On Thu, Feb 13, 2020, at 12:34 AM, Mark Abraham wrote: > Hi, > > When they succeed, the doxygen targets produce files like > >

[gmx-users] lmfit not working

2020-02-12 Thread Sergio Perez
Dear gmx comunity, I am trying to use gmx analyze for the block analysis and I get this error: Fatal error: This build of GROMACS was not configured with support for lmfit, so the requested fitting cannot be performed. See the install guide for instructions on how to build GROMACS with lmfit

Re: [gmx-users] runtime error: pdb2gmx issues in Python API

2020-02-12 Thread Eric Irrgang
Hi Marko, I apologize for the slow response. "pdb2gmx" is not an executable, but an argument. Try gmx.commandline_operation( 'gmx', ['pdb2gmx', '-water', 'spce', '-ff', 'oplsaa'] ...) I hope to be able to improve the documentation soon, but the exception should have

Re: [gmx-users] Call for Abstracts: SES - Advances in Polymer Modeling and Simulations (deadline March 17, 2020)

2020-02-12 Thread Paul bauer
Hello, please do ***NOT*** use the mailing list for those kinds of announcements in the future. It is supposed to be for people discussing and asking for help with GROMACS, not for advertising conferences. Thanks Paul On 12/02/2020 19:13, Jihong Ma wrote: Dear colleagues, The Society of

[gmx-users] Call for Abstracts: SES - Advances in Polymer Modeling and Simulations (deadline March 17, 2020)

2020-02-12 Thread Jihong Ma
Dear colleagues, The Society of Engineering Science (SES) 57th Annual Technical Meeting will be held at Hyatt Regency Minneapolis, September 28-30, 2020 ( https://ccaps.umn.edu/SES). As part of this meeting, we are organizing a mini-symposium addressing the *advances in polymer modeling and

Re: [gmx-users] generating Doxygen documentation

2020-02-12 Thread Mark Abraham
Hi, When they succeed, the doxygen targets produce files like $builddir/docs/html/doxygen/html-*/index.xhtml which you can open in your browser. The doxygen for the released versions is on the web however, so it's much easier to just use or refer to that. Mark On Wed, 12 Feb 2020 at 16:30,

[gmx-users] generating Doxygen documentation

2020-02-12 Thread Michele Pellegrino
Hi, I am trying to generate the Doxygen documentation for GROMACS from the files in /docs/doxygen. I following 2020 manual, I run 'make doxygen-all' in the build directory, succesfully; I don't know what to do next: I tried to run cmake in the doxygen directory to generate the Doxyfiles, but

Re: [gmx-users] Protein stabilization

2020-02-12 Thread Justin Lemkul
On 2/12/20 6:20 AM, Gonzalez Fernandez, Cristina wrote: Dear Gromacs users, I'm trying to perform a protein-lipid complex simulation. While the interaction between these molecules seems reasonable, the protein Root Mean Square Deviation is too high, and I don't know how to stabilice it.

Re: [gmx-users] Experimental to Simulation Time Period Conversion

2020-02-12 Thread Justin Lemkul
On 2/12/20 8:23 AM, Peter Mawanga wrote: Thanks a lot sir for your reply. Since experiments take place over hours but the simulations can at best approach millisecond levels. I was wondering if there is an acceptable time conversion factor from experiments to simulations. For example, the

Re: [gmx-users] Query

2020-02-12 Thread Justin Lemkul
On 2/11/20 4:46 PM, sai manohar wrote: You cannot generate the desired parameters (.itp) for metals in the ATB server. In fact even CGenFF or RED server are also not useful for metals. However, if you have access to any DFT modeling in house to perform QM calculations using Gaussian etc., you

Re: [gmx-users] Experimental to Simulation Time Period Conversion

2020-02-12 Thread Peter Mawanga
Thanks a lot sir for your reply. Since experiments take place over hours but the simulations can at best approach millisecond levels. I was wondering if there is an acceptable time conversion factor from experiments to simulations. For example, the simulation data generated over a 350 ns period

Re: [gmx-users] Experimental to Simulation Time Period Conversion

2020-02-12 Thread John Whittaker
> Dear group members > > My sincere apologies for the non-Gromacs related question, but I require > this information urgently and hence posted my query here. > > Could someone please provide me with any guidelines to appropriately model > experimental processes with molecular dynamics simulations?

[gmx-users] Protein stabilization

2020-02-12 Thread Gonzalez Fernandez, Cristina
Dear Gromacs users, I'm trying to perform a protein-lipid complex simulation. While the interaction between these molecules seems reasonable, the protein Root Mean Square Deviation is too high, and I don't know how to stabilice it. Could you recommend me any simulation trick to stabilize the

[gmx-users] Experimental to Simulation Time Period Conversion

2020-02-12 Thread Peter Mawanga
Dear group members My sincere apologies for the non-Gromacs related question, but I require this information urgently and hence posted my query here. Could someone please provide me with any guidelines to appropriately model experimental processes with molecular dynamics simulations? Since the

Re: [gmx-users] Free energy perturbation of ligand

2020-02-12 Thread Alessandra Villa
Hi, On Wed, Feb 12, 2020 at 8:54 AM TIASHA ADHIKARY wrote: > Hello, > I am trying to calculate FEP using gromacs. I have used pmx for initial > structure and .itp file. > I am getting the following warning > > WARNING 1 [file MOL.itp, line 185]: > Some parameters for bonded interaction