Re: [gmx-users] gromacs

2014-07-31 Thread Justin Lemkul
On 7/31/14, 1:16 AM, Meenakshi Rajput wrote: hi gromacs users I have done the whole mdrun simulation of my protein human serum albumin complex with ligand and i got all the files. But when i opened the pdb file obtained after md simulation in pymol to see the interaction, ligand went to some

Re: [gmx-users] gromacs error

2014-07-31 Thread Urszula Uciechowska
How should I correct the input file? Urszula Uciechowska On 7/31/14, 7:42 AM, Urszula Uciechowska wrote: Dear Gromacs users, I tried to run coarse grained MD however after a few steps I got: Step 39, time 0.78 (ps) LINCS WARNING relative constraint deviation after LINCS: rms 0.038933,

Re: [gmx-users] gromacs error

2014-07-31 Thread Justin Lemkul
On 7/31/14, 8:16 AM, Urszula Uciechowska wrote: How should I correct the input file? http://manual.gromacs.org/online/mdp_opt.html#vel And get your hands on some suitable tutorial material; proper use of these settings is routine. -Justin Urszula Uciechowska On 7/31/14, 7:42 AM,

Re: [gmx-users] gromacs error

2014-07-31 Thread Urszula Uciechowska
Can anyone help me with this error file? I did not get the log file... Back Off! I just backed up md.log to ./#md.log.5# Reading file md10ns-2.tpr, VERSION 4.5.3 (single precision) Reading checkpoint file md10ns.cpt generated: Mon Jul 21 20:45:14 2014 Gromacs binary or parallel settings not

[gmx-users] input error?

2014-07-31 Thread Urszula Uciechowska
I have changed the Pcoupl into parrinello-rahman and I have still the same error. The input file was taken from the martini webpage http://md.chem.rug.nl/cgmartini/index.php/proteins define = -DPOSRES dt = 0.02 nsteps = 25000 nstxout = 0 nstvout

Re: [gmx-users] hints for core/shell optimization?

2014-07-31 Thread Tamas Karpati
Dear Justin, I'm in the experimenting with [exclusions] for [thole_polarization]. Still not there but approaching... I'd like to ask more help as the Manual is not detailed enough for me to comprehend the whole. When using the core/shell model I expect the following extra effects and functions

Re: [gmx-users] gromacs error

2014-07-31 Thread Justin Lemkul
On 7/31/14, 8:36 AM, Urszula Uciechowska wrote: Can anyone help me with this error file? I did not get the log file... There is no error here. I assume this is what is concerning: Gromacs binary or parallel settings not identical to previous run. Continuation is exact, but is not

Re: [gmx-users] input error?

2014-07-31 Thread Justin Lemkul
On 7/31/14, 8:41 AM, Urszula Uciechowska wrote: I have changed the Pcoupl into parrinello-rahman and I have still the same error. The input file was taken from the martini webpage http://md.chem.rug.nl/cgmartini/index.php/proteins From my experience, the settings in the equilibration.mdp

Re: [gmx-users] g_select position variables

2014-07-31 Thread Teemu Murtola
Hi, On Tue, Jul 29, 2014 at 6:18 AM, Cara Kreck cara_...@hotmail.com wrote: Is it possible to use a position variable in conjunction with x,y,z keywords in g_select? Unfortunately, this is currently not possible. I'm trying to select all molecules within a channel embedded in a membrane.

Re: [gmx-users] hints for core/shell optimization?

2014-07-31 Thread Tamas Karpati
Dear Justin, 1. With a q_D charge on D, the normal q_A becomes q_C=q_A-q_D to preserve the q_A=q_C+q_D atomic charge in a c/s simulation (since D is attached to A). I assume that GROMPP expects q_C for atoms, q_D for shell particles in the GRO files. Is this correct? No. Every atom in

Re: [gmx-users] hints for core/shell optimization?

2014-07-31 Thread Justin Lemkul
On 7/31/14, 2:17 PM, Tamas Karpati wrote: Dear Justin, 1. With a q_D charge on D, the normal q_A becomes q_C=q_A-q_D to preserve the q_A=q_C+q_D atomic charge in a c/s simulation (since D is attached to A). I assume that GROMPP expects q_C for atoms, q_D for shell particles in the GRO

Re: [gmx-users] g_tcaf error message

2014-07-31 Thread Justin Lemkul
On 7/31/14, 10:51 PM, Andy Chao wrote: Dear GROMACS Users: I tried to use the g_tcaf command to calculate the viscosity of the ionic liquid. I got the following error message while using the following command: g_tcaf -f NPT.trr -s NPT.tpr -n index.ndx -o tcaf.xvg The error message is the

Re: [gmx-users] g_select position variables

2014-07-31 Thread Cara Kreck
Teemu, I suspected that might have been the case. It would be good to see a z of option in a future version, if you find the time. Thanks, Cara Date: Thu, 31 Jul 2014 20:47:11 +0300 From: teemu.murt...@gmail.com To: gmx-us...@gromacs.org Subject: Re: [gmx-users] g_select position