Re: [gmx-users] Installing GMX-GPU 4.5.5

2012-01-31 Thread Андрей Гончар
I dont know exactly, but yesterday I've installed gromacs with this guide and now everything works fine. 2012/2/1 Efrat Exlrod : > Thanks for your reply. > > > > I looked at this guide but I still wonder - can't the deletion of instances > of "-fexcess-precision=fast" affect performance? And why i

[gmx-users] Installing GMX-GPU 4.5.5

2012-01-31 Thread Efrat Exlrod
Thanks for your reply. I looked at this guide but I still wonder - can't the deletion of instances of "-fexcess-precision=fast" affect performance? And why is this flag unrecognized? Thanks, Efrat >Date: Tue, 31 Jan 2012 21:50:53 +0300 >From: ?? ?? >Subject: Re: [gmx-users] Insta

Re: [gmx-users] problem with make_ndx

2012-01-31 Thread Anushree Tripathi
But in coordinate file(.pdb file) ,I am not getting the atoms which belongs to DPPC.only I have included the name of dppc.itp file like this: ;Include DPPC chain topology #include "dppc.itp" That's why I have found the atoms wich belongs to DPPC molecule from dppc.itp file itself. On Wed, Feb 1,

Re: [gmx-users] problem with make_ndx

2012-01-31 Thread Mark Abraham
On 1/02/2012 6:04 PM, Anushree Tripathi wrote: When I run the command (i.e., make_ndx -f em.gro -o index.ndx) ,it is showing the following options: 0 System : 18379 atoms 1 Protein : 11739 atoms 2 Protein-H : 9135 atoms 3 C-alpha : 1173 ato

Re: [gmx-users] g_dist

2012-01-31 Thread Mark Abraham
On 1/02/2012 4:26 PM, dina dusti wrote: Dear Prof. Thank you very much from your response. Yes, dist.xvg has four column consists origin distance and distances in direction x, y , z. So distance that I want according to result of g_analyze, is 5.324286e-02 that isn't correct. I selected 2 grou

[gmx-users] problem with make_ndx

2012-01-31 Thread Anushree Tripathi
When I run the command (i.e., make_ndx -f em.gro -o index.ndx) ,it is showing the following options: 0 System : 18379 atoms 1 Protein : 11739 atoms 2 Protein-H : 9135 atoms 3 C-alpha : 1173 atoms 4 Backbone: 3519 atoms 5 MainC

Re: [gmx-users] A query

2012-01-31 Thread Mark Abraham
On 1/02/2012 4:19 PM, Anik Sen wrote: Hello, Am anik. Am using gromacs 4.5.5 But the dna.rtp file contains the atom bname N3 under the residue file DT. So whats the problem then. Yes, that's the reason from the problem. Your input structure doesn't have that... I said: pdb2gmx can only mat

[gmx-users] g_dist

2012-01-31 Thread dina dusti
Dear Prof. Thank you very much from your response. Yes, dist.xvg has four column consists origin distance and distances in direction x, y , z. So distance that I want according to result of g_analyze, is 5.324286e-02 that isn't correct. I selected 2 groups, micelle and the last carbon bounded

RE: [gmx-users] A query

2012-01-31 Thread Anik Sen
Hello, Am anik. Am using gromacs 4.5.5 But the dna.rtp file contains the atom bname N3 under the residue file DT. So whats the problem then. the dna.rtp file for DT [ DT ] [ atoms ] P P 1.16590 1 O2 O1P -0.77610 2 O2 O2P -0.7761

Re: [gmx-users] can mdrun append output files without the proper .cpt?

2012-01-31 Thread Alex Marshall
Thanks Mark! On Tue, Jan 31, 2012 at 7:26 PM, Mark Abraham wrote: > On 28/01/2012 7:09 AM, Alex Marshall wrote: > > Hi all, > I was trying to extend my simulation but I used the wrong .tpr file when I > called mdrun_mpi. I didn't catch it in time and my checkpoint files were > overwritten. Now I

Re: [gmx-users] can mdrun append output files without the proper .cpt?

2012-01-31 Thread Mark Abraham
On 28/01/2012 7:09 AM, Alex Marshall wrote: Hi all, I was trying to extend my simulation but I used the wrong .tpr file when I called mdrun_mpi. I didn't catch it in time and my checkpoint files were overwritten. Now I've used GROMPP to extend the simulation (as directed in http://www.gromacs

Re: [gmx-users] g_dist

2012-01-31 Thread Mark Abraham
On 1/02/2012 1:05 AM, dina dusti wrote: Dear Gromacs specialists, Can you help me about g_dist? I have a micelle system, I want to obtain distance between center of mass of micelle with the last of carbon bounded to head group in surfactant. It should be near 2.2 but when I did "g_dist -f md

Re: [gmx-users] make_ndx select atoms from different residues

2012-01-31 Thread Mark Abraham
On 1/02/2012 5:02 AM, Zhuyi Xue wrote: Hi, there I would like to select, for example, CA of GLY, CB of PRO, so I typed r GLY& a CA | r PRO& a CB, but it doesn't work. make_ndx also doesn't support parenthesis, either. Previously, I used "r GLY& a CA" (save as group 1), then "r PRO& a CB"

RE: [gmx-users] g_rdf

2012-01-31 Thread Dallas Warren
An RDF is normalised to the density for the entire box, so you should simply be using that. 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

Re: [gmx-users] Gromacs on GPU

2012-01-31 Thread Matthew Lardy
I should add that while we had runs that completed, all we got were NaN for the coordinates and energies. Personally, I have attributed our inability to execute the GPU code cleanly to our C2050 Teslas [they are double precision]. (As I had the GPUized code working with an earlier card, although

Re: [gmx-users] Gromacs on GPU

2012-01-31 Thread Matthew Lardy
Sorry for the delay, but I used gcc version 4.1.2 20080704 to compile our version of "GPU" enabled gromacs. Matt On Sat, Jan 28, 2012 at 11:32 AM, Benjamin Hall wrote: > Justin A. Lemkul wrote: > > > We get junk output with 4.5.4 if the box size is set to zero, for some odd > reason, though in p

RE: [gmx-users] Monte Carlo with Gromacs and implicit solvent

2012-01-31 Thread Gianluca Interlandi
Hi Rene, Thanks for your reply. One question though. How much overhead do you think I would have in calling "mdrun -rerun" after every step and would it run more efficiently if I used GromPy? Thanks, Gianluca On Tue, 31 Jan 2012, Pool, R. wrote: Hi Gianluca, Ah, I get it. In that ca

Re: [gmx-users] Dihedral potential with chirality

2012-01-31 Thread David van der Spoel
On 2012-01-31 19:49, Li SUN wrote: Thanks for the explanation! Is the improper dihedral in GROMACS implemented in an unsigned fashion? Yes, that means that changing the order of atoms changes the sign and this may give you the opposite chirality. On Mon, Jan 30, 2012 at 9:01 PM, Mark Abraham

Re: [gmx-users] Installing GMX-GPU 4.5.5

2012-01-31 Thread Андрей Гончар
You should try this: http://verahill.blogspot.com/2012/01/debian-testing-64-wheezy-compiling_20.html 2012/1/31 Efrat Exlrod : > Hi, > > I'm compiling gromacs 4.5.5 with gcc compiler (v 4.5.3), cmake (2.8.7) and > OpenMM 3.1.1 on Linux (Red Hat release 5.7). I have followed the > installation instr

Re: [gmx-users] Dihedral potential with chirality

2012-01-31 Thread Li SUN
Thanks for the explanation! Is the improper dihedral in GROMACS implemented in an unsigned fashion? On Mon, Jan 30, 2012 at 9:01 PM, Mark Abraham wrote: > On 31/01/2012 2:59 PM, Li SUN wrote: > > So please look at the attached figure which is exactly the leftmost > subfigure of Figure 4.8 from

[gmx-users] make_ndx select atoms from different residues

2012-01-31 Thread Zhuyi Xue
Hi, there I would like to select, for example, CA of GLY, CB of PRO, so I typed r GLY& a CA | r PRO& a CB, but it doesn't work. make_ndx also doesn't support parenthesis, either. Previously, I used "r GLY& a CA" (save as group 1), then "r PRO& a CB" (save as group 2), then "1|2", and final

Re: [gmx-users] mdrun on GROMACS 3.3.1

2012-01-31 Thread Justin A. Lemkul
francesca vitalini wrote: Well I'm keeping struggling with this script. Apparently the problem in in using the integrator md with the GOMACS 3.3.1 version. In fact the same .mdp file with integrator steep works. while with md it always gives the error message that it cannot open the .xtc file

Re: [gmx-users] mdrun on GROMACS 3.3.1

2012-01-31 Thread francesca vitalini
Well I'm keeping struggling with this script. Apparently the problem in in using the integrator md with the GOMACS 3.3.1 version. In fact the same .mdp file with integrator steep works. while with md it always gives the error message that it cannot open the .xtc file. How can I get around this prob

[gmx-users] Problem Compiling grogui with plotting.

2012-01-31 Thread Stephen P. Molnar
openSUSE 12.1 64bit. I have managed to compile grogui with plotting on earlier versions of openSUSE. However when I attempt compiling the program on my current OS I get the following errors: src/editor.cpp: In member function ‘void Editor::updateMenus()’: src/editor.cpp:156:59: error: ‘class

[gmx-users] Re: Assigning protonation states using Amber ff

2012-01-31 Thread intra\sa175950
Hi, I suggest taking a look in RED.DB web site (http://q4md-forcefieldtools.org/REDDB/index.php), where some RESP charges for DNA are stored. HTH Stephane -- Message: 1 Date: Tue, 31 Jan 2012 16:11:02 +1100 From: Mark A

[gmx-users] Re: Thanks for your help!

2012-01-31 Thread Bruce D. Ray
I am replying to the Gromacs User's list rather than directly. On Monday, January 30, 2012 12:38 AM,Tom wrote: > Thanks for answering me my question and thanks for the nice open > source code program! > I found out my prvious problem due to the problem of my *mol2 file. >  > Can you help with

[gmx-users] g_dist

2012-01-31 Thread dina dusti
Dear Gromacs specialists, Can you help me about g_dist? I have a micelle system, I want to obtain distance between center of mass of micelle with the last of carbon bounded to head group in surfactant. It should be near 2.2 but when I did   "g_dist -f md.xtc -s md.tpr -b 15 -o dist.xvg" an

Re: [gmx-users] mdrun on GROMACS 3.3.1

2012-01-31 Thread Francesca Vitalini
Thank you Justin for your quick reply. Unfortunately I cannot use a more modern version of GROMACS as my topology and .gro files where first created for a reverse transformation from cg to fg and thus required the 3.3.1 version and some specific .itp files that are only present in that version

Re: [gmx-users] A query

2012-01-31 Thread Mark Abraham
On 31/01/2012 9:04 PM, Anik Sen wrote: Hello, Am anik. Am using gromacs 4.5.5 I could not find the proper reason of the foillowig failure of my job. please help. *The following is a part of the dna pdb file, which I am using: *ATOM 1 O5' DG5 X 1 13.663 36.760 21.465 0.00 0.0

Re: [gmx-users] mdrun on GROMACS 3.3.1

2012-01-31 Thread Justin A. Lemkul
Francesca Vitalini wrote: Actually the directory is of my own and I have created it in my home directory so that shouldn't be a problem as I also have created other files in the same directory without any problems so far. Other ideas? Thanks Francesca Il giorno 31/gen/2012, alle ore 13.0

Re: [gmx-users] mdrun on GROMACS 3.3.1

2012-01-31 Thread Francesca Vitalini
Actually the directory is of my own and I have created it in my home directory so that shouldn't be a problem as I also have created other files in the same directory without any problems so far. Other ideas? Thanks Francesca Il giorno 31/gen/2012, alle ore 13.02, Justin A. Lemkul ha scritto:

Re: [gmx-users] umbrella curve

2012-01-31 Thread Justin A. Lemkul
parto haghighi wrote: Dear gmx users I have done umbrella sampling for a membrnae drug system and i have used 13 windows in this process but at last when I extracted the histogram curve I only had two peak.Is this reasonable? No. If you conducted 13 simulations, you should have 13 histograms

[gmx-users] Installing GMX-GPU 4.5.5

2012-01-31 Thread Efrat Exlrod
Hi, I'm compiling gromacs 4.5.5 with gcc compiler (v 4.5.3), cmake (2.8.7) and OpenMM 3.1.1 on Linux (Red Hat release 5.7). I have followed the installation instructions. The configuration seems to work well. > ~/progs/cmake-2.8.7/bin/cmake -DGMX_OPENMM=ON > -DCUDA_TOOLKIT_ROOT_DIR:PATH=/opt/

Re: [gmx-users] problem with calculating SASA

2012-01-31 Thread Justin A. Lemkul
Maryam Hamzehee wrote: Hi Many thanks for your email, the question is that topology file (*.top) has not DNA, if I want to produce the tpr file I need a top file containing both DNA and protein; How can I edit my top file in oredr to include DNA in my top file. Then you need to incorp

Re: [gmx-users] mdrun on GROMACS 3.3.1

2012-01-31 Thread Justin A. Lemkul
francesca vitalini wrote: Hallo GROMACS users! I'm trying to run a simple md script after running an energy minimization script on my system and I'm getting a wired error message Reading file dynamin_dimer_PR1.tpr, VERSION 3.3.1 (single precision) Loaded with Money -

Re: [gmx-users] problem with making index.ndx

2012-01-31 Thread Justin A. Lemkul
Anushree Tripathi wrote: I am using gromacs 4.5.3 version.When I run the command (i.e., make_ndx -f em.gro -o index.ndx),It is not showing any option for DPPC group which I want to include.Please tell me how could I merge or create this option for proceeding to the next step of NVT simulation

[gmx-users] umbrella curve

2012-01-31 Thread parto haghighi
Dear gmx users I have done umbrella sampling for a membrnae drug system and i have used 13 windows in this process but at last when I extracted the histogram curve I only had two peak.Is this reasonable? Also my PMF curve has several minimum and maximum points and at last it converges to zero.Is i

Re: [gmx-users] develop parameters for small molecules

2012-01-31 Thread David van der Spoel
On 2012-01-31 11:28, Qinghua Liao wrote: Dear GMX users, We want to develop the ff parameters for some small molecules in consistent with gromos 53a6, and I know that PRODRG can do it, but it is not accurate enough. So we want to do some QM calculations to validate it. However, how can I derive

[gmx-users] develop parameters for small molecules

2012-01-31 Thread Qinghua Liao
Dear GMX users, We want to develop the ff parameters for some small molecules in consistent with gromos 53a6, and I know that PRODRG can do it, but it is not accurate enough. So we want to do some QM calculations to validate it. However, how can I derive these parameters for bonds and dihedrals fr

[gmx-users] g_rdf

2012-01-31 Thread mohammad agha
- Forwarded Message - From: mohammad agha To: "gmx-users@gromacs.org" Sent: Tuesday, January 31, 2012 11:56 AM Subject: g_rdf Dear Prof. I am confused about generation a radial density graph (density vs distance from center of mass), I know that I should use g_rdf. Then I count t

[gmx-users] A query

2012-01-31 Thread Anik Sen
Hello, Am anik. Am using gromacs 4.5.5 I could not find the proper reason of the foillowig failure of my job. please help. The following is a part of the dna pdb file, which I am using: ATOM 1 O5' DG5 X 1 13.663 36.760 21.465 0.00 0.00 ATOM 2 C1' DG5 X 1 14

RE: [gmx-users] Monte Carlo with Gromacs and implicit solvent

2012-01-31 Thread Pool, R.
Hi Gianluca, Ah, I get it. In that case you can actually use GromPy, but it needs to be modified slightly. You need only one tpr file that will be stored in memory during execution of GromPy. For the sampling you can generate new configurations and accept/reject them according to the appropriat

Re: [gmx-users] Restraints for specific residues

2012-01-31 Thread Андрей Гончар
Ok, thanks 2012/1/31 Mark Abraham : > On 31/01/2012 7:14 PM, Андрей Гончар wrote: >> >> So for every residue I need to specify their atoms, am I right? > > > Yeah. One way is to use make_ndx to select the atoms in the residues and > make an index file group, then genrestr, then #include the genera

[gmx-users] g_rdf

2012-01-31 Thread mohammad agha
Dear Prof. I am confused about generation a radial density graph (density vs distance from center of mass), I know that I should use g_rdf. Then I count the number of atoms in the shells around the COM of special group by " trjorder -com -nshell -r " , next I use from this formula for compute t

Re: [gmx-users] Restraints for specific residues

2012-01-31 Thread Mark Abraham
On 31/01/2012 7:14 PM, Андрей Гончар wrote: So for every residue I need to specify their atoms, am I right? Yeah. One way is to use make_ndx to select the atoms in the residues and make an index file group, then genrestr, then #include the generated .itp file. Mark 2012/1/31 Mark Abraham

Re: [gmx-users] Restraints for specific residues

2012-01-31 Thread Андрей Гончар
So for every residue I need to specify their atoms, am I right? 2012/1/31 Mark Abraham : > On 31/01/2012 7:06 PM, Андрей Гончар wrote: >> >> Hi! >> Is it possible to specify which residues to restrain during MD simulation? >> For example I have a protein, but I don't want to restrain all the >> mo

Re: [gmx-users] Restraints for specific residues

2012-01-31 Thread Mark Abraham
On 31/01/2012 7:06 PM, Андрей Гончар wrote: Hi! Is it possible to specify which residues to restrain during MD simulation? For example I have a protein, but I don't want to restrain all the molecule, but a part. How can I do this? See http://www.gromacs.org/Documentation/How-tos/Position_Restr

[gmx-users] Restraints for specific residues

2012-01-31 Thread Андрей Гончар
Hi! Is it possible to specify which residues to restrain during MD simulation? For example I have a protein, but I don't want to restrain all the molecule, but a part. How can I do this? -- Андрей Гончар -- gmx-users mailing listgmx-users@gromacs.org http://lists.gromacs.org/mailman/listinfo