[gmx-users] Re FTP server down

2009-01-20 Thread Dallas B. Warren
Sorry seems that it was just me, or it is back up. Either way things are good now. Catch ya, Dallas Warren A polar bear is a rectangular bear that has undergone a polar transformation ___ gmx-users mailing listgmx-users@gromacs.org http://www.

[gmx-users] ftp Server Down?

2009-01-20 Thread Dallas B. Warren
Is it just me, or is it down at the moment? Trying to get the latest version source files. Catch ya, Dallas Warren A polar bear is a rectangular bear that has undergone a polar transformation ___ gmx-users mailing listgmx-users@gromacs.org htt

Re: [gmx-users] About frozen groups

2009-01-20 Thread Justin A. Lemkul
Mohammed Kamal wrote: Many thanks for Justin for your helpful comments, I think I still need your help for the first question... I have included more details about my system below > Mohammed Kamal wrote: > > > Tcoupl = berendsen > > > > tau_t = 0.1 0.1 0.1 0.1 > > > > tc_grps =

RE: [gmx-users] About frozen groups

2009-01-20 Thread Mohammed Kamal
Many thanks for Justin for your helpful comments, I think I still need your help for the first question... I have included more details about my system below > Mohammed Kamal wrote:> > > Tcoupl = berendsen> > > > tau_t = 0.1 0.1 0.1 0.1> > > > > tc_grps = protein T27 SOL Cl ; T27 is the

Re: [gmx-users] MD vs Scattering

2009-01-20 Thread Justin A. Lemkul
Chih-Ying Lin wrote: Hi Can we simulate "samlple putting on the equipment using GROMACS-MD package"? This question doesn't make any sense to me. If you can explain the procedure you are interested in simulating, you might be able to get more useful advice. -Justin Thank you Lin

[gmx-users] RE: Is there any option to output interaction energy based on energy groups?

2009-01-20 Thread Vitaly Chaban
> Is there any option to output total interaction energy > (without *internal > energy*) based on energy groups? I don't know such. But it seems very easy to sum the terms which are output. === Vitaly V. Chaban, Ph.D.(ABD) School of Chemistry V.N. Karazin Kha

[gmx-users] RE: Constant Velocity

2009-01-20 Thread Vitaly Chaban
gurgo> Hello all, gurgo> Is there anyway to provide constant velocity to any particular group of atoms.? See acc-grps === Vitaly V. Chaban, Ph.D.(ABD) School of Chemistry V.N. Karazin Kharkiv National University Svoboda sq.,4, Kharkiv 61077, Ukraine email: cha..

[gmx-users] MD vs Scattering

2009-01-20 Thread Chih-Ying Lin
Hi Can we simulate "samlple putting on the equipment using GROMACS-MD package"? Thank you Lin ___ gmx-users mailing listgmx-users@gromacs.org http://www.gromacs.org/mailman/listinfo/gmx-users Please search the archive at http://www.gromacs.org/searc

[gmx-users] Is there any option to output interaction energy based on energy groups?

2009-01-20 Thread Liu Shiyong
Hi, Is there any option to output total interaction energy (without *internal energy*) based on energy groups? *g_energy -f r-l_365130_G53a6.minim_traj_withH_0.6.minim_ener.edr* [shiy...@reco temp20090115]$ g_energy -f r-l_365130_G53a6.minim_traj_withH_0.6.minim_ener.edr

[gmx-users] Constant Velocity

2009-01-20 Thread avinash kumar
Hello all, Is there anyway to provide constant velocity to any particular group of atoms.? -- Avinash Kumar. ___ gmx-users mailing listgmx-users@gromacs.org http://www.gromacs.org/mailman/listinfo/gmx-users Please search the archive at http://www.g

Re: [gmx-users] Qestion about how to define groups by chain id in a protein ?

2009-01-20 Thread Justin A. Lemkul
Liu Shiyong wrote: Thanks. I used the PDB file with H . It works though it's still a mystery for me why PDB file without H couldn't work. Because the atoms will be numbered wrong. When you use pdb2gmx, hydrogens will be added to some groups (polar groups, aromatics, N-termini, etc). S

Re: [gmx-users] Qestion about how to define groups by chain id in a protein ?

2009-01-20 Thread Liu Shiyong
Thanks. I used the PDB file with H . It works though it's still a mystery for me why PDB file without H couldn't work. On Tue, Jan 20, 2009 at 1:53 PM, Justin A. Lemkul wrote: > > > Liu Shiyong wrote: > > > > The problem lies here: > > Including chain 1 in system: 1296 atoms 125 residues >

Re: [gmx-users] Qestion about how to define groups by chain id in a protein ?

2009-01-20 Thread Justin A. Lemkul
Liu Shiyong wrote: The problem lies here: Including chain 1 in system: 1296 atoms 125 residues Including chain 2 in system: 1274 atoms 123 residues Including chain 3 in system: 2085 atoms 201 residues This suggests that chain 2 (Protein B) should contain numbers up to about 2500.

Re: [gmx-users] Software Raid and low GROMACS performance

2009-01-20 Thread Martin Höfling
Am Dienstag, den 20.01.2009, 17:07 -0200 schrieb Alexandre Suman de Araujo: > I have two machines with Intel Quad Core processors and Intel > motherboards. In the first one I'm running Open Suse with normal > partition scheme. In the second I'm running Ubuntu 8.04 with software > RAID 1. Hard

[gmx-users] Software Raid and low GROMACS performance

2009-01-20 Thread Alexandre Suman de Araujo
Hi all. I have two machines with Intel Quad Core processors and Intel motherboards. In the first one I'm running Open Suse with normal partition scheme. In the second I'm running Ubuntu 8.04 with software RAID 1. Running a simulations in parallel (4 process, one for each core) in the first

[gmx-users] RE: Numbering in xtc and in conf.gro. Does it coincide?

2009-01-20 Thread Vitaly Chaban
>> >> In other words, is information about the initial (in conf.gro) >> numbering of molecules present in the xtc trajectory file? Looking at >> the xtc using gmxdump I see the numbering always start with zero in >> spite of the xtc-qrps arguments. >> > All files number from 0 to natom-1. You have

Re: [gmx-users] Qestion about how to define groups by chain id in a protein ?

2009-01-20 Thread Justin A. Lemkul
Liu Shiyong wrote: Hi I have checked the manual, but it did not help. Checking the cgnr column did not help either. Well, did it indicate that these atoms are indeed in the same charge group? I suggested before that you check out your topology to see how grompp is interpreting it. If, as

Re: [gmx-users] Qestion about how to define groups by chain id in a protein ?

2009-01-20 Thread Liu Shiyong
Hi I have checked the manual, but it did not help. Checking the cgnr column did not help either. What I do is just splitting the pdb file into two energy groups (chains A+B and C). I do not change any definitions of charge groups in Gromacs. As the result, I am getting "1996 and 1998 are in differe

Re: [gmx-users] Numbering in xtc and in conf.gro. Does it coincide?

2009-01-20 Thread David van der Spoel
Vitaly Chaban wrote: Source code file: matio.c, line: 533 Fatal error: Lo: 0.00, Mid: 1.00, Hi: 1.00 Although nclust.xvg, maxclust.xvg, avclust.xvg are created and seem adequate. However what could the above error indicate? that all atoms belong to the same cluster. Yes, it's

[gmx-users] Numbering in xtc and in conf.gro. Does it coincide?

2009-01-20 Thread Vitaly Chaban
> Source code file: matio.c, line: 533 > > Fatal error: > Lo: 0.00, Mid: 1.00, Hi: 1.00 > > > Although nclust.xvg, maxclust.xvg, avclust.xvg are created and seem > adequate. > > However what could the above error indicate? >that all atoms belong to the same cluster. Yes, it's true

[gmx-users] electric field effects

2009-01-20 Thread rams rams
Dear users, Does any one aware of how to carry out the simulations in presence of a static and oscillating electric fields ? I found an option E_x, E_y, E_z needed to be mentioned in the run mdp file. Other than this are there any thing we need to mention ? Ram. __

RE: [gmx-users] deform option in parallel with Gromacs 4.0.2

2009-01-20 Thread Berk Hess
Hi, This bug has been fixed in 4.0.3, but I forgot about it when writing the release notes. Berk > From: ydub...@uvm.edu > To: gmx-users@gromacs.org > Date: Tue, 20 Jan 2009 08:53:15 -0500 > Subject: [gmx-users] deform option in parallel with Gromacs 4.0.2 > > Hi, > > I am running stress simu

Re: [gmx-users] RE: How to output a single index group

2009-01-20 Thread Omer Markovitch
Also check out "make_ndx -help". Omer. Koby Levy research group, Weizmann Institute of Science. http://www.weizmann.ac.il/sb/faculty_pages/Levy/ On Mon, Jan 19, 2009 at 18:28, Vitaly Chaban wrote: > > I am running a simulation of 5 time steps and am trying to avoid > setting > > nstxtcout

[gmx-users] deform option in parallel with Gromacs 4.0.2

2009-01-20 Thread Yves Dubief
Hi, I am running stress simulations of vesicles and lipid bilayer membranes, which work on one processor but fail when using multiple processors. The simulations run Marrink's CGMD model with Gromacs 4.0.2 (sorry I am unable to upgrade until next week) on openmpi and mpich. The simulation

[gmx-users] RE: Tcl script

2009-01-20 Thread Vitaly Chaban
> I just now started with TCL scripting.And it will be helpful if someone > tell me how to write a TCL script for the following queries.? > 2. what is the total charge of the protein? Yeah, Tcl is a good way to write scripts for gromacs but it is really not a part of the package. :) As for th

Re: [gmx-users] g_clussize. strange error

2009-01-20 Thread David van der Spoel
Vitaly Chaban wrote: Hi, I have a system with three kinds of particles. For this time I want to examine possible clusters containing only two kinds of particles. My index file consists of all the numbers of those atoms which belong to the particles of interest. Then g_clustsize(402) -n index.nd

[gmx-users] g_clussize. strange error

2009-01-20 Thread Vitaly Chaban
Hi, I have a system with three kinds of particles. For this time I want to examine possible clusters containing only two kinds of particles. My index file consists of all the numbers of those atoms which belong to the particles of interest. Then g_clustsize(402) -n index.ndx It seems to work cor

Re: [gmx-users] About frozen groups

2009-01-20 Thread Justin A. Lemkul
Mohammed Kamal wrote: Tcoupl = berendsen tau_t= 0.1 0.1 0.1 0.1 tc_grps = protein T27 SOL Cl ; T27 is the ligand General advice: do not couple solvent and ions separately. I believe there is a newer version of the tutorial that fixes

RE: [gmx-users] Tcl script

2009-01-20 Thread Kukol, Andreas
Tcl is not part of Gromacs. Please direct your enquiry to the appropriate mailing list, e.g. http://www.tcl.tk/community/ Andreas From: gmx-users-boun...@gromacs.org [mailto:gmx-users-boun...@gromacs.org] On Behalf Of varsha gautham Sent: 20 January 2009 07:05 To: gmx-users@gromacs.org Su