Re: [gmx-users] help about ibi

2013-11-13 Thread Mark Abraham
Hi, Something went wrong earlier in your workflow. Check your log files, etc. Mark On Nov 13, 2013 3:57 AM, "guozhicheng222" wrote: > Hi: > > When I am running the ibi procedure, I get the following error message: > > > > A coordinate in file conf.gro does >

Re: [gmx-users] help about logfile

2013-11-11 Thread Justin Lemkul
On 11/11/13 5:04 AM, guozhicheng222 wrote: Hi I am confusing with the output file (.log) about the sample frequency (frames) in my simulation. The average information in .log file is 'Statistics over 31 steps using 3001 frames' where nstxout =4000 and nstlog =4000. While, 'Statistics over

Re: [gmx-users] Help to simulate gas mixture

2013-11-03 Thread Mark Abraham
The principle is the same as at http://www.gromacs.org/Documentation/How-tos/Mixed_Solvents On Nov 3, 2013 6:55 PM, "ali.nazari" wrote: > Dear Friends, > > I am just a beginner in using GROMCS-4.6.3 and I want to simulate gas > mixture, the same as mixture of O2 and N2, any help(the same as intro

Re: [gmx-users] Help on itp and pdb

2013-09-06 Thread Justin Lemkul
Please don't reply to the entire digest; the archive is hopelessly confused as it is, but let's not make it any worse ;) On 9/6/13 2:29 PM, R R S Pissurlenkar wrote: If I use the topology and coordinates of a small molecule from ATB for docking (structure.pdb / structure.itp which match in at

Re: [gmx-users] help

2013-09-04 Thread Justin Lemkul
On 9/4/13 6:04 AM, Prajisha Sujaya wrote: I am facing a problem while simulating the tRNA molecule while converting pdb to gro, Fatal error: Atom OP3 in residue A 1 was not found in rtp entry RA5 with 31 atoms while sorting atoms. force field used 3 (AMBER96 protein, nucleic AMBER94), water

Re: [gmx-users] Help with Error Message

2013-08-27 Thread Tsjerk Wassenaar
An editor is a program to edit the text in a file: gedit, nano, vi, emacs, ... It'll be the equivalent of Windows' Notepad. Can you find a tutor around to help you out with the basic usage of Linux? It's always difficult to plunge into several different things at the same time, here 'using linux',

Re: [gmx-users] Help with Error Message

2013-08-27 Thread Rafael I. Silverman y de la Vega
a text editor On Tue, Aug 27, 2013 at 1:54 PM, The One And Only wrote: > What kind of editor should I open it in? I have Pymol, but I don't know if > it's the right one. > -- > gmx-users mailing listgmx-users@gromacs.org > http://lists.gromacs.org/mailman/listinfo/gmx-users > * Please search

Re: [gmx-users] Help with Error Message

2013-08-27 Thread The One And Only
What kind of editor should I open it in? I have Pymol, but I don't know if it's the right one. -- 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!

Re: [gmx-users] Help with Error Message

2013-08-27 Thread Tsjerk Wassenaar
Hi ..., You should have had a look at the topology file format in an earlier step. At the end is a listing of molecules. As it says in the tutorial, you replaced solvent by ions, and you have to make changes in the topology file to match that replacement. Open the file in an editor, have a look ar

Re: [gmx-users] Help with Error Message

2013-08-27 Thread The One And Only
I've moved on from that point; now I'm stuck at where it asks me to remove molecules of solvent from the topology file. On Tue, Aug 27, 2013 at 1:33 PM, Tsjerk Wassenaar wrote: > Hey :) > > Sorry for replying a bit late. But the issues you mention in this and the > other posts are usually solve

Re: [gmx-users] Help with Error Message

2013-08-27 Thread Tsjerk Wassenaar
Hey :) Sorry for replying a bit late. But the issues you mention in this and the other posts are usually solved by closely reading the text of the tutorial, not only the commands. Cheers, Tsjerk On Sun, Aug 25, 2013 at 3:44 AM, The One And Only wrote: > Never mind, I'm dumb. I just realized t

Re: [gmx-users] Help with Error Message

2013-08-24 Thread The One And Only
Never mind, I'm dumb. I just realized that protein.pdb means i have to specify which protein i want like "1qlz.pdb" and not actually type "protein.pdb" BUT THANKS GUYS!! On Sat, Aug 24, 2013 at 6:40 PM, The One And Only wrote: > so how do i solve the protein.pdb issue? > > > On Sat, Aug 24, 2013

Re: [gmx-users] Help with Error Message

2013-08-24 Thread The One And Only
so how do i solve the protein.pdb issue? On Sat, Aug 24, 2013 at 6:37 PM, Justin Lemkul wrote: > > > On 8/24/13 9:26 PM, The One And Only wrote: > >> that's something i know nothing about; I just graduated from high school >> and I have no background or experience in open source projects or pro

Re: [gmx-users] Help with Error Message

2013-08-24 Thread Justin Lemkul
On 8/24/13 9:26 PM, The One And Only wrote: that's something i know nothing about; I just graduated from high school and I have no background or experience in open source projects or programs like pymol/gromacs. My professor wants me to be able to produce a setup, simulation, and analysis withi

Re: [gmx-users] Help with Error Message

2013-08-24 Thread The One And Only
that's something i know nothing about; I just graduated from high school and I have no background or experience in open source projects or programs like pymol/gromacs. My professor wants me to be able to produce a setup, simulation, and analysis within a week so I'm pretty desperate right now in te

Re: [gmx-users] Help with Error Message

2013-08-24 Thread Rafael I. Silverman y de la Vega
It sounds like you dont have the .pdb file in your working directory. Perhaps you need to learn a bit about unix filesystems On Sat, Aug 24, 2013 at 6:18 PM, The One And Only wrote: > So I started following some tutorials online since I didn't get a response > last time. the tutorial I'm using i

Re: [gmx-users] Help needed in installation

2013-07-02 Thread Tsjerk Wassenaar
Hi Sonika, cmake needs a specification of the path where the source code is. In addition to that, it is best to build it in a separate directory. As explained on the website, in your gromacs directory: mkdir build cd build cmake ../ make make install Hope it helps, Tsjerk On Tue, Jul 2, 2013

Re: [gmx-users] Help with modified gmx_covar

2013-06-05 Thread Mark Abraham
You need to call the newly compiled code. Either install the new version and source GMXRC appropriately, or use a full path to the new version in the build tree. Mark On Wed, Jun 5, 2013 at 11:05 AM, rohitarora wrote: > Dear Gmx users, > > I need to ask you about a doubt I have regarding chang

RE: [gmx-users] help with g_hydorder and g_polystat

2013-05-02 Thread Emmanuel, Alaina
t.edu] Sent: 01 May 2013 22:58 To: Discussion list for GROMACS users Subject: Re: [gmx-users] help with g_hydorder and g_polystat On 5/1/13 8:44 AM, Emmanuel, Alaina wrote: > > No, using a trajectory file with g_hydorder hasn't made any difference. The > error is still the same. > &

Re: [gmx-users] help with g_hydorder and g_polystat

2013-05-01 Thread Justin Lemkul
On 5/1/13 8:44 AM, Emmanuel, Alaina wrote: No, using a trajectory file with g_hydorder hasn't made any difference. The error is still the same. When I use g_polystat, I use the following command: g_polystat_d -f file.xtc -s file.tpr -n polymer_backbone.ndx -p persist.xvg -o polystat.xvg

RE: [gmx-users] help with g_hydorder and g_polystat

2013-05-01 Thread Emmanuel, Alaina
y 2013 10:58 To: Discussion list for GROMACS users Subject: Re: [gmx-users] help with g_hydorder and g_polystat On 4/30/13 9:00 PM, Emmanuel, Alaina wrote: > Hello Justin, > > My mdp file shows that the pbc was set to xyz. > Instead of analyzing a coordinate file, does it work with a traje

Re: [gmx-users] help with g_hydorder and g_polystat

2013-05-01 Thread Justin Lemkul
laina From: gmx-users-boun...@gromacs.org [gmx-users-boun...@gromacs.org] on behalf of Justin Lemkul [jalem...@vt.edu] Sent: 30 April 2013 16:10 To: Discussion list for GROMACS users Subject: Re: [gmx-users] help with g_hydorder and g_polystat On 4/30/13 6:24 AM, Emm

RE: [gmx-users] help with g_hydorder and g_polystat

2013-04-30 Thread Emmanuel, Alaina
GROMACS users Subject: Re: [gmx-users] help with g_hydorder and g_polystat On 4/30/13 6:24 AM, Emmanuel, Alaina wrote: > Dear All, > > I'm fairly new to gromacs and having a bit of problem with the g_hydorder and > g_polystat. Thanks in advanced for your time. > > For g_hydorder

RE: [gmx-users] help with g_hydorder and g_polystat

2013-04-30 Thread Emmanuel, Alaina
GROMACS users Subject: Re: [gmx-users] help with g_hydorder and g_polystat On 4/30/13 6:24 AM, Emmanuel, Alaina wrote: > Dear All, > > I'm fairly new to gromacs and having a bit of problem with the g_hydorder and > g_polystat. Thanks in advanced for your time. > > For g_hydorder

Re: [gmx-users] help with g_hydorder and g_polystat

2013-04-30 Thread Justin Lemkul
On 4/30/13 6:24 AM, Emmanuel, Alaina wrote: Dear All, I'm fairly new to gromacs and having a bit of problem with the g_hydorder and g_polystat. Thanks in advanced for your time. For g_hydorder, I get a fatal error when I type the following command: g_hydorder_d -f file.gro -s file.tpr -n

Re: [gmx-users] help: load imbalance

2013-04-10 Thread Szilárd Páll
On Wed, Apr 10, 2013 at 4:50 PM, 申昊 wrote: > Hello, >I wanna ask some questions about load imbalance. > 1> Here are the messages resulted from grompp -f md.mdp -p topol.top -c > npt.gro -o md.tpr > >NOTE 1 [file md.mdp]: > The optimal PME mesh load for parallel simulations is below 0.5

Re: [gmx-users] help: load imbalance

2013-04-10 Thread Justin Lemkul
On Wed, Apr 10, 2013 at 10:50 AM, 申昊 wrote: > Hello, >I wanna ask some questions about load imbalance. > 1> Here are the messages resulted from grompp -f md.mdp -p topol.top -c > npt.gro -o md.tpr > >NOTE 1 [file md.mdp]: > The optimal PME mesh load for parallel simulations is below 0.5

Re: [gmx-users] help with chromophore of a GFP

2013-03-21 Thread lloyd riggs
pdb format as its easier than jumping back and forth. Original-Nachricht > Datum: Thu, 21 Mar 2013 21:43:16 +0100 > Von: Mark Abraham > An: Discussion list for GROMACS users > Betreff: Re: [gmx-users] help with chromophore of a GFP > On Thu, Mar 21, 2013 a

Re: [gmx-users] help with chromophore of a GFP

2013-03-21 Thread Justin Lemkul
estion was to create a new entry in the .rtp file of the selected forcefield. Indeed, this kind of problem is most easily solved by making a new "residue" that contains the whole chromophore, such that it links to its neighbours with normal peptide links.

Re: [gmx-users] help with chromophore of a GFP

2013-03-21 Thread Mark Abraham
involving residue CFY. > Yeah, but my bet is those atoms are the C-terminus and N-terminus of the fragments that should form peptide bonds to CFY. Mark > Any help is > welcome > > Thank you so much. > > Anna > > Il 21.03.2013 12:00 > gmx-users-requ...@gromacs.org ha scr

Re: [gmx-users] help with chromophore of a GFP

2013-03-21 Thread Justin Lemkul
ch. > > Anna > > Il 21.03.2013 12:00 > gmx-users-requ...@gromacs.org ha scritto: > > >> Dear gmx-users, it's > about two weeks that I'm trying to solve this problem, and I can't, so > I'm asking your help. I want to do some MD simulations on a p

Re: [gmx-users] help with chromophore of a GFP

2013-03-21 Thread Anna MARABOTTI
to its > neighbours with normal peptide links. > -- Message: 5 Date: Thu, 21 Mar 2013 11:46:12 +0100 From: Mark Abraham Subject: Re: [gmx-users] help with chromophore of a GFP To: Discussion list for GROMACS users Message-ID: Content-Type: text/plain; charset=IS

Re: [gmx-users] help with chromophore of a GFP

2013-03-21 Thread Mark Abraham
On Wed, Mar 20, 2013 at 6:01 PM, Anna MARABOTTI wrote: > > > Dear gmx-users, > > it's about two weeks that I'm trying to solve this > problem, and I can't, so I'm asking your help. > > I want to do some MD > simulations on a protein of the family of green fluorescent protein. > This protein, as y

Re: [gmx-users] help with chromophore of a GFP

2013-03-21 Thread Anna Marabotti
an with a pen, the man with the gun is a dead man" (Roberto Benigni, about Roberto Saviano) Il 21/03/2013 06:37, gmx-users-requ...@gromacs.org ha scritto: Message: 3 Date: Wed, 20 Mar 2013 13:05:08 -0400 From: Justin Lemkul Subject: Re: [gmx-users] help with chromophore of a GFP

Re: [gmx-users] help with chromophore of a GFP

2013-03-20 Thread Justin Lemkul
On Wed, Mar 20, 2013 at 1:01 PM, Anna MARABOTTI wrote: > > > Dear gmx-users, > > it's about two weeks that I'm trying to solve this > problem, and I can't, so I'm asking your help. > > I want to do some MD > simulations on a protein of the family of green fluorescent protein. > This protein, as y

Re: [gmx-users] help

2013-02-26 Thread Justin Lemkul
On 2/26/13 7:46 AM, Sjøli Stian wrote: dear gmx-users, this is a stupid question (and partially a test of use). I cant find any information on how to use/modify maxvarn as a parameter for grompp. Can you point to examples or literature? Consider the help text: -maxwarn int0

Re: [gmx-users] help with building DNA in gromacs

2013-01-23 Thread יוכבד
Hi Steven I'm running simulations on DNA structures using the amber99sb-ildn FF. I had no problem generating .top and .gro files I might be able to help if you are interested. send me the PDB file. Yocheved On Sun, Jan 20, 2013 at 10:57 PM, Tom wrote: > Dear Gromacs User > > I built DNA with t

Re: [gmx-users] help with building DNA in gromacs

2013-01-20 Thread Justin Lemkul
On 1/20/13 3:57 PM, Tom wrote: Dear Gromacs User I built DNA with the pdb file and *mol2 But when I used pdb2gmx to obtain *top file, pdb2gmx give error report when I chose charmm27: --- Program pdb2gmx, VERSION 4.5.5 Source code file: resall.c, line: 581 Fatal error: R

Re: [gmx-users] help with improper angle in gmx

2013-01-07 Thread Justin Lemkul
On 1/7/13 6:11 PM, Tom wrote: Dear Gromacs Users I want to use harmonic type of improper angle potential with opls-aa The manu seems not clear. Can anyone give an small example about the format in *rtp file and ffbond.itp file? The names of improper_*_*_*_* tell you to what improper the p

Re: [gmx-users] help

2012-12-02 Thread Justin Lemkul
On 12/2/12 2:17 AM, 申昊 wrote: Hi everyone, I am a new one on using gromacs. Now I have some problems. [1] I want using g_analyze to calculate the self-ACF with the dist.xvg resulted from g_dist, the file nameddist.xvg consists two lists of time(ns) and distance(nm), respectively

Re: [gmx-users] help

2012-10-05 Thread Justin Lemkul
On 10/5/12 7:20 AM, Marlon Hinner wrote: Please unsubscribe. Thank you. Per the instructions in the footer of every mail on the list: * Please don't post (un)subscribe requests to the list. Use the www interface or send it to gmx-users-requ...@gromacs.org. -Justin -- ===

Re: [gmx-users] help with "interaction of type atom in the topology database, but an atom of that name was not found in residue" error

2012-08-30 Thread Justin Lemkul
On 8/30/12 9:23 PM, Katrina Lexa wrote: Hello Gromacs Users: I apologize for asking a question that has come up several times in the forum, but I have read the answers to those posts and I am not still unable to fix the error based on the suggestions in the previous emails. It

Re: [gmx-users] Help of mdrun-gpu

2012-07-27 Thread Mark Abraham
On 28/07/2012 12:58 AM, Du Jiangfeng (BIOCH) wrote: Dear All, I just configured the mdrun-gpu. When I tested "mdrun-gpu" by running gromacs-gpubench-dhfr.tar.gz which is from gromacs website. Unfortunately, it failed with segmentation fault. I don't think the system has any equilibrium proble

Re: [gmx-users] help!!

2012-06-15 Thread Justin A. Lemkul
On 6/15/12 5:58 AM, ankita oindrila wrote: i am using the tutorial KALP15 in DPPC for my protein in bilipid membrane SIMULATION. i have reached Step Three: Defining the Unit Cell & Adding Solvent where i hav to pack the lipids around the protein using InflateGro. how do i start using infl

RE: [gmx-users] Help with free energy

2012-05-05 Thread Emanuel Birru
how to do it. Cheers, Emmanuel From: gmx-users-boun...@gromacs.org [gmx-users-boun...@gromacs.org] on behalf of Justin A. Lemkul [jalem...@vt.edu] Sent: Saturday, May 05, 2012 12:59 PM To: Discussion list for GROMACS users Subject: Re: [gmx-users] Help

Re: [gmx-users] Help with free energy

2012-05-04 Thread Justin A. Lemkul
Please keep all correspondence on the gmx-users list. I am not a private tutor and you have better odds of solving your problem by allowing others to provide input. On 5/4/12 8:01 PM, Milinda Samaraweera wrote: Hi Justin Im a very new to using Gromacs. I tried to reproduce the values in sh

Re: [gmx-users] Help with free energy

2012-05-04 Thread Justin A. Lemkul
On 5/4/12 3:56 PM, Milinda Samaraweera wrote: Hi Im trying to calculate the hydration free energy for the molecule Aniline And I get a free energy value about 10 kcal higher than the experimental value What I do is I couple vdw then charges from a dummy state and add the two delta G values usi

RE: [gmx-users] help about "Inconsistent DD boundary staggering limits"

2012-04-26 Thread Desheng Zheng
file and the same commands? Best wishes, Desheng From: gmx-users-boun...@gromacs.org [gmx-users-boun...@gromacs.org] On Behalf Of Justin A. Lemkul [jalem...@vt.edu] Sent: Thursday, April 26, 2012 3:05 PM To: Discussion list for GROMACS users Subject

Re: [gmx-users] help about "Inconsistent DD boundary staggering limits"

2012-04-26 Thread Justin A. Lemkul
On 4/26/12 3:30 PM, Desheng Zheng wrote: Thanks Justin! about the "Software inconsistency error: Inconsistent DD boundary staggering limits!" I still have three concerts. 1. Is it ok, if i use grompp to generate the edr file in gromacs 4.5.5 environmentwith the gro file and top file whic

Re: [gmx-users] help about "Inconsistent DD boundary staggering limits"

2012-04-26 Thread Justin A. Lemkul
On 4/26/12 2:52 PM, Desheng Zheng wrote: Hi Guys, I have done the simulation. The total steps is 500. At around 90 steps, the error information appear like the followings. Please give me some suggestions to fix it. Based on the comment that precedes the error call in the code: /*

Re: [gmx-users] Help: Anyone worked with "Wall"?

2012-04-05 Thread Peter C. Lai
For walls, the atoms in the wall are virtual. Remember that 9-3 LJ integratees over the volume behind the wall so you will have to set your atom density appropriately. Setting wall_density to 20/nm^3 for 9-3 wall leads to 20 carbon atoms per nm^3. That's not going to be totally solid, imo. I am

Re: [gmx-users] help needed

2012-03-31 Thread Mark Abraham
On 31/03/2012 6:02 PM, oindrila das wrote: *SIMULATION OF LYSOZYME IN WATER USING GROMACS-4.0.5 * STEP: TO NEUTRALIZE THE +8 CHARGE WITH 8 CL- MOLECULES* COMMAND GIVEN : [root@localhost gromacs-4.0.5]# genion -s ions.tpr -o 1AKI_solv_ions.gro -p topol.top -pname NA -nname CL -nn 8*

Re: [gmx-users] Help regarding running DSSP in gmx

2012-03-19 Thread Mark Abraham
On 20/03/2012 12:39 AM, chandran karunakaran wrote: Dear ALL, We could not run DSSP for analysing the secondary structure. Any help in this regard is very much appreciated ***+ Dr.Karunakaran Chandran + Biophysics Department + Medical College of Wisconsin +

Re: [gmx-users] Help regarding running DSSP in gmx

2012-03-19 Thread Tsjerk Wassenaar
Hi Chandran, What did you try, and what error did it come up with? What platform are you using, and which version of DSSP? The latest version of DSSP won't work with Gromacs yet. Cheers, Tsjerk On Mon, Mar 19, 2012 at 2:39 PM, chandran karunakaran wrote: > Dear ALL, > >     We could not r

Re: [gmx-users] help on replica exchange dynamics with gromacs

2012-03-12 Thread Mark Abraham
On 13/03/2012 3:17 PM, Raghuvir Pissurlenkar wrote: Dear friends Can someone help me with tutorial on replica exchange dynamics Thanks in advance Raghuvir Search the GROMACS webpage, please. You will want to do some normal tutorials to understand normal workflows first. Mark -- gmx-us

Re: [gmx-users] Help about g_hbond and angle cutoff

2012-01-14 Thread Justin A. Lemkul
alejandro esteban blanco munoz wrote: Hi gromacs Users: I have a doubt respect to how g_hbond consider the cutoff angle (-a) Acceptor-Donnor-Hydrogen in gromacs 4.5.4. I need to evaluate the hydrogen bonds with an anble larger than 135°. The default value of the angle is cutoff in g_hbond i

Re: [gmx-users] Help with non-standard residues and molecular structures

2012-01-04 Thread Robert Hamers
Thanks-- that clarifies a lot. I hadn't quite realized how much is assumed about the residue terminii. It seems like I was trying to fit a square peg into a round hole. I'm going to re-think this and maybe take a different approach just based on using HETATMs and not trying to define a sepa

Re: [gmx-users] Help with non-standard residues and molecular structures

2012-01-04 Thread Mark Abraham
On 4/01/2012 4:57 PM, Robert Hamers wrote: I'd appreciate any help -- I'm trying to model a small (~ 20-carbon ) molecule linked to a diamond surface. I got the diamond surface with >1500 atoms working fine all the way through to the MD simulation and it looks great. But I'm getting stuck

Re: [gmx-users] Help with Principal component analysis

2012-01-02 Thread Mark Abraham
On 3/01/2012 6:54 AM, Alex Jemulin wrote: Dear all I run a MD on a GPCR (transmembrane protein) Then I run a PCA on results and I found 3PC sufficient to explain variance. On the same PC I get big values for samples located both at Nter (extracellular) and Cter (intracellular) or for similar ca

RE: [gmx-users] Help with g_density

2011-12-19 Thread Dallas Warren
What is your interpretation? Catch ya, Dr. Dallas Warren Medicinal Chemistry and Drug Action Monash Institute of Pharmaceutical Sciences, Monash University 381 Royal Parade, Parkville VIC 3010 dallas.war...@monash.edu +61 3 9903 9304 - When the only tool you own is

Re: [gmx-users] Help with g_rmsf

2011-12-14 Thread Tsjerk Wassenaar
Hi Carla, > during my simulation, the dimer I'm simulating changed a lot. > So when I calculate with g_rms, the RMSD between my initial and my final > structure (choosing "Protein-H"), I get a value of 10 angstroms. Have you made sure there are no atoms jumping across the boundaries? > g_rmsf -s

Re: [gmx-users] help on mdrun

2011-07-09 Thread lina
I am not sure I can give an affirmative working answer, but you may check ssh to each node, use "top" to see whether it's really run or just occupy the node but not use. On Sat, Jul 9, 2011 at 8:56 AM, Mark Abraham wrote: > On 9/07/2011 3:37 AM, raghu...@bcpindia.org wrote: >> >> Hi >> >> >> I

Re: [gmx-users] help on mdrun

2011-07-08 Thread Mark Abraham
On 9/07/2011 3:37 AM, raghu...@bcpindia.org wrote: Hi I have a problem related to submitting a mdrun job on cluster. I tried to ask help or gromacs and rocks users-group. My machine specs. Cluster of Intel Xeon processors:QC with Rocks Cluster. 8 processors (16 threads) When I submit md

Re: [gmx-users] help

2011-07-07 Thread Mark Abraham
On 8/07/2011 1:31 PM, wrote: Hi, I'm doing implicit solvent in gromacs 4.5.2 with amber03 force field .I have done energy minimization .Then mdrun in NVT,but there is always LINCS error .When I make impolicit_solvent=no,it can run successfully. Is there a problem in the parameter settings

Re: [gmx-users] Help: Gromacs Installation

2011-04-27 Thread Mark Abraham
On 4/28/2011 4:44 AM, Hrachya Astsatryan wrote: Dear Roland, We need to run the GROMACS on the base of the nodes of our cluster (in order to use all computational resources of the cluster), that's why we need MPI (instead of using thread or OpenMP within the SMP node). I can run simple MPI exa

Re: [gmx-users] Help: Gromacs Installation

2011-04-27 Thread Hrachya Astsatryan
Dear Roland, We need to run the GROMACS on the base of the nodes of our cluster (in order to use all computational resources of the cluster), that's why we need MPI (instead of using thread or OpenMP within the SMP node). I can run simple MPI examples, so I guess the problem on the implementat

Re: [gmx-users] Help: Gromacs Installation

2011-04-27 Thread Roland Schulz
This seems to be a problem with your MPI library. Test to see whether other MPI programs don't have the same problem. If it is not GROMACS specific please ask on the mailinglist of your MPI library. If it only happens with GROMACS be more specific about what your setup is (what MPI library, what ha

Re: [gmx-users] Help: Gromacs Installation

2011-04-27 Thread Hrachya Astsatryan
Dear Mark Abraham & all, We used another benchmarking systems, such as d.dppc on 4 processors, but we have the same problem (1 proc use about 100%, the others 0%). After for a while we receive the following error: Working directory is /localuser/armen/d.dppc Running on host wn1.ysu-cluster.gr

Re: [gmx-users] Help: Gromacs Installation

2011-04-22 Thread Mark Abraham
On 4/22/2011 5:40 PM, Hrachya Astsatryan wrote: Dear all, I would like to inform you that I have installed the gromacs4.0.7 package on the cluster (nodes of the cluster are 8 core Intel, OS: RHEL4 Scientific Linux) with the following steps: yum install fftw3 fftw3-devel ./configure --prefix=

Re: [gmx-users] help on converting charmm/cgenff parameters to gromacs

2011-04-07 Thread Mark Abraham
On 7/04/2011 9:38 PM, Peter C. Lai wrote: Ok here's a minor? problem I'm having with dihedrals. Apparently grompp won't read H-H dihedrals such as: HGA2 CG321 CG321 HGA2 9 0.000.92048 3 ;LIPID alkane HGA2 CG321 CG331 HGA3 9 0.000.66944 3 ;PROT rot

Re: [gmx-users] help on converting charmm/cgenff parameters to gromacs

2011-04-07 Thread Peter C. Lai
Ok here's a minor? problem I'm having with dihedrals. Apparently grompp won't read H-H dihedrals such as: HGA2 CG321 CG321 HGA2 9 0.000.92048 3 ;LIPID alkane HGA2 CG321 CG331 HGA3 9 0.000.66944 3 ;PROT rotation barrier in ethane (the lipid equiv wo

Re: [gmx-users] help on converting charmm/cgenff parameters to gromacs

2011-04-07 Thread Mark Abraham
On 7/04/2011 5:39 PM, Peter C. Lai wrote: Actually I figured it out. in forcefield.itp, the nonbonded.itp file must be included before the bonded.itp file... Yep, it has the [atomtypes]. Mark On 2011-04-07 02:22:38AM -0500, Mark Abraham wrote: On 7/04/2011 3:45 PM, Peter C. Lai wrote: Ok

Re: [gmx-users] help on converting charmm/cgenff parameters to gromacs

2011-04-07 Thread Peter C. Lai
Actually I figured it out. in forcefield.itp, the nonbonded.itp file must be included before the bonded.itp file... On 2011-04-07 02:22:38AM -0500, Mark Abraham wrote: > On 7/04/2011 3:45 PM, Peter C. Lai wrote: > > Ok I'm now getting the dreaded "Unknown bond_atomtype CG2O5" > > grompp fatal er

Re: [gmx-users] help on converting charmm/cgenff parameters to gromacs

2011-04-07 Thread Peter C. Lai
On 2011-04-07 02:01:47AM -0500, Mark Abraham wrote: > On 7/04/2011 3:45 PM, Peter C. Lai wrote: > > Ok I'm now getting the dreaded "Unknown bond_atomtype CG2O5" > > On what line of what file? Please copy and paste the whole error > message. Keeping information back only hurts you :-) Here is the

Re: [gmx-users] help on converting charmm/cgenff parameters to gromacs

2011-04-07 Thread Mark Abraham
On 7/04/2011 3:45 PM, Peter C. Lai wrote: Ok I'm now getting the dreaded "Unknown bond_atomtype CG2O5" grompp fatal error. I ran pdb2gmx on a pdb of my ligand and it generated a gro and a top file: http://pastebin.com/HL3k7EPU for the gro http://pastebin.com/y6T4ir7y for the top I ran "grompp -

Re: [gmx-users] help on converting charmm/cgenff parameters to gromacs

2011-04-07 Thread Mark Abraham
On 7/04/2011 3:45 PM, Peter C. Lai wrote: Ok I'm now getting the dreaded "Unknown bond_atomtype CG2O5" On what line of what file? Please copy and paste the whole error message. Keeping information back only hurts you :-) Mark grompp fatal error. I ran pdb2gmx on a pdb of my ligand and it g

Re: [gmx-users] help on converting charmm/cgenff parameters to gromacs

2011-04-06 Thread Peter C. Lai
Ok I'm now getting the dreaded "Unknown bond_atomtype CG2O5" grompp fatal error. I ran pdb2gmx on a pdb of my ligand and it generated a gro and a top file: http://pastebin.com/HL3k7EPU for the gro http://pastebin.com/y6T4ir7y for the top I ran "grompp -f em.mdp -c nonanone.gro -p nonanone.top -o

Re: [gmx-users] Help with using g_bar

2011-04-06 Thread Justin A. Lemkul
Warren Gallin wrote: On 2011-04-06, at 10:58 AM, Justin A. Lemkul wrote: Warren Gallin wrote: I am trying to use g_bar to derive a PMF curve from non-equilibrium trajectory data. I am using v 4.5.4 on a Mac running OSX 10.6.7. I am using the end-to-end distance of a peptide as the co-ordin

Re: [gmx-users] Help with using g_bar

2011-04-06 Thread Warren Gallin
On 2011-04-06, at 10:58 AM, Justin A. Lemkul wrote: > > > Warren Gallin wrote: >> I am trying to use g_bar to derive a PMF curve from non-equilibrium >> trajectory data. I am using v 4.5.4 on a Mac running OSX 10.6.7. >> I am using the end-to-end distance of a peptide as the co-ordinate of >>

Re: [gmx-users] Help with using g_bar

2011-04-06 Thread Justin A. Lemkul
Warren Gallin wrote: I am trying to use g_bar to derive a PMF curve from non-equilibrium trajectory data. I am using v 4.5.4 on a Mac running OSX 10.6.7. I am using the end-to-end distance of a peptide as the co-ordinate of interest. After doing a long simulation of the peptide, I selected t

Re: [gmx-users] help on converting charmm/cgenff parameters to gromacs

2011-04-06 Thread Peter C. Lai
On 2011-04-06 01:49:50AM -0500, Mark Abraham wrote: > The standard CHARMM .prm files give an indication of how the parameters > will be used, so it's just a matter of converting units and taking care > of any constants. Looks like if I use http://lists.gromacs.org/pipermail/gmx-users/2010-Septem

Re: [gmx-users] help on converting charmm/cgenff parameters to gromacs

2011-04-06 Thread Thomas Piggot
Yes, Mark is exactly correct about the glitch. I had just forgotten to change this default charge in the ffnonbonded.itp when copying from another atom. As mentioned this has no impact as these charges are never used by pdb2gmx. Cheers Tom Mark Abraham wrote: On 6/04/2011 2:51 PM, Peter C.

Re: [gmx-users] help on converting charmm/cgenff parameters to gromacs

2011-04-05 Thread Mark Abraham
On 6/04/2011 2:51 PM, Peter C. Lai wrote: Hello I am constructing a ligand for which I wish to use the new Charmm CGenFF parameters (a long aliphatic ketone). I am using Tom/Par's charmm36 lipid conversion as a baseline template for comparison: For reference, c36 lipid CTL3 atoms (in the case

Re: [gmx-users] Help with Umbrella Sampling

2011-03-31 Thread Justin A. Lemkul
Raghuvir R S Pissurlenkar wrote: Dear Justin I removed the constrain on the DPPC molecules, however I find still LINCS errors are prominent Any alterative can I try Reduce the pull_rate. If you pull too fast, your system cannot adapt properly to the collisions that are induced by the ar

Re: [gmx-users] Help on umbrella sampling

2011-03-30 Thread Justin A. Lemkul
raghu...@bcpindia.org wrote: Dear Users and Developers I am trying to execute md_pull.mdp {given below} on a small molecule embedded at the core of lipid bilayer. I have tried to modify the md_pull.mdp from the Tutorial by Justin Lemkul on Umbrella sampling. I encounter LINCS warning (10

Re: [gmx-users] Help regarding terinary complex simulation with ZN at active site

2011-02-28 Thread Justin A. Lemkul
kala wrote: Dear friends I am trying to run a MD simulation with a Zn ion in the active site. The zinc makes covalent bond to His , Asp , Cys and Drug molecule. however I am trying to study various ligands that make a sustainable bond with zn over period of time. I am new to

RE: [gmx-users] Help please.

2011-02-24 Thread Dallas Warren
Best place to start is to provide an exact copy paste of the command you used, then an exact copy/paste of the error message. A good resource for errors is http://www.gromacs.org/Documentation/Errors and searching the emailing list http://www.gromacs.org/Support/Mailing_Lists/Search Catch

Re: [gmx-users] Help with B2AR within the POPC membrane

2011-02-08 Thread Aldo Segura
Dear Justin, You're right, I corrected the box vectors , and it works! Thanks, -- 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! Please don't pos

Re: [gmx-users] Help with B2AR within the POPC membrane

2011-02-08 Thread Justin A. Lemkul
Aldo Segura wrote: Thanks for your answer. You're right in the procedure for the packing of the protein and lipids. However, after several iterations (~30) the lipids are packaged to form the bilayer and the protein is outside of it. I can send you a couple of pictures for a better explanation

Re: [gmx-users] Help with B2AR within the POPC membrane

2011-02-08 Thread Aldo Segura
Thanks for your answer. You're right in the procedure for the packing of the protein and lipids. However, after several iterations (~30) the lipids are packaged to form the bilayer and the protein is outside of it. I can send you a couple of pictures for a better explanation of my problem. Best

Re: [gmx-users] Help with B2AR within the POPC membrane

2011-02-08 Thread Justin A. Lemkul
Aldo Segura wrote: Dear gmxusers, I need to perform molecular dynamics simulation of a B2AR within the POPC membrane. I have downloaded the 128b.pdb, popc.itp and lipid.itp files from Prof.Tieleman's group. My protein of interest is 343 residues. Also, I aligned the protein and membrane. I fol

Re: [gmx-users] Help with the heme group in forcefield gromos53a6

2011-01-19 Thread Justin A. Lemkul
Tanos Franca wrote: Dear users, We are trying to perform a MD simulation of a protein with a heme group using the gromos53a6 force field but, when trying to run grompp, we receive the error mesage: Program grompp, VERSION 4.0.3 Source code file: ../../../../src/kernel/toppush.c, line: 947 F

Re: [gmx-users] help regarding simulation

2011-01-04 Thread Justin A. Lemkul
onetwo wrote: Hello All, I want to know one thing that if MD could be used in my case, i have a protein for which crystal structure is known with a conenzyme bound to it. It is given in literature that related proteins of this family shows large conformational change near the substrate bind

Re: [gmx-users] Help for MD of short peptides at 276K

2010-10-26 Thread Justin A. Lemkul
Subhrangshu Supakar wrote: Hi!! I am new to short peptide simulations at low temperatures. I want to run a MD of short peptides of 6 - 12 residues at 276 K. For this the scheme I wish to follow is : 1. Run a short energy minimization of the peptide + water system to remove short contacts 2.

Re: [gmx-users] Help to run demo- reg

2010-10-14 Thread Mark Abraham
On 14/10/2010 7:19 PM, Sathish wrote: Dear all, I have installed gromacs 4.5.1 in RHEL5.5 server. Then i was started to run demo but still its running ( more then 5 hrs). How long will take time to complete. Any other possible way is there to increase speed ? Anybody can help me? It's proba

Re: [gmx-users] Help on data anaysis in g_rdf and g_dist

2010-08-27 Thread Justin A. Lemkul
tekle...@ualberta.ca wrote: Dear Justine, As for the distance, have you corrected for PBC? Are you analyzing the molecules that you think you are? No, I did not correct for the PBC. How can I do that. And what is the purpose of that in the g_dist calculation. Usually one uses trjconv. I

Re: [gmx-users] Help on data anaysis in g_rdf and g_dist

2010-08-27 Thread teklebrh
Dear Justine, As for the distance, have you corrected for PBC? Are you analyzing the molecules that you think you are? No, I did not correct for the PBC. How can I do that. And what is the purpose of that in the g_dist calculation. Yes, I just look at the last frame of my simulation and

Re: [gmx-users] Help on data anaysis in g_rdf and g_dist

2010-08-27 Thread Justin A. Lemkul
tekle...@ualberta.ca wrote: Dear Gmx users, After working for quite sometime I managed to simulated almost all my molecules for 20ns. Thank you for all your help especially Justine.Now I am on last stage of analyzing my data. First: I want to calculate g(r)and I used the following command

Re: [gmx-users] Help on data anaysis in g_rdf and g_dist

2010-08-27 Thread teklebrh
Dear Gmx users, After working for quite sometime I managed to simulated almost all my molecules for 20ns. Thank you for all your help especially Justine.Now I am on last stage of analyzing my data. First: I want to calculate g(r)and I used the following command g_rdf -f PAP_20ns.xtc -s PA

Re: [gmx-users] help with git

2010-08-24 Thread Mark Abraham
- Original Message - From: Alan Date: Wednesday, August 25, 2010 0:10 Subject: Re: [gmx-users] help with git To: Discussion list for GROMACS users > Sorry if confused... because I am *really* confused too with git. > Anyway, I started anew again and it seems to be working now.&

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