Re: [gmx-users] getting rid of PBC, completely

2012-01-18 Thread Mark Abraham
On 19/01/2012 5:39 PM, Chandan Choudhury wrote: Dear gmx-users, I have a simulated a system containing a linear polymer in a cubic box with water molecules. I need to get rid of PBC effect on the system such that I can execute my own analysis code. I intend to compute the msd of water molec

Re: [gmx-users] getting rid of PBC, completely

2012-01-18 Thread Tsjerk Wassenaar
Hi Chadan, You should stop after your second step, removing jumps. Don't center. And definitely don't put the system in the box, as that exactly undoes removal of jumps. Cheers, Tsjerk On Thu, Jan 19, 2012 at 7:39 AM, Chandan Choudhury wrote: > > Dear gmx-users, > > I have a simulated a system

[gmx-users] getting rid of PBC, completely

2012-01-18 Thread Chandan Choudhury
Dear gmx-users, I have a simulated a system containing a linear polymer in a cubic box with water molecules. I need to get rid of PBC effect on the system such that I can execute my own analysis code. I intend to compute the msd of water molecules along the polymer backbone. So, when I execute my

Re: [gmx-users] Chromophore residue patch in gromacs

2012-01-18 Thread Mark Abraham
On 19/01/2012 3:17 PM, bharat gupta wrote: No. I am not trying to crosslink the chromophore with nay residue but I have linked it with neighboring Valine(68) and Leucine(64) by specifying the bonds in specbond.dat file. You still have to go and look at residue 51 and see what is going on. Th

Re: [gmx-users] Chromophore residue patch in gromacs

2012-01-18 Thread bharat gupta
No. I am not trying to crosslink the chromophore with nay residue but I have linked it with neighboring Valine(68) and Leucine(64) by specifying the bonds in specbond.dat file. On Thu, Jan 19, 2012 at 12:09 PM, Peter C. Lai wrote: > Are you crosslinking the chromophore to an atom in residue 51?

Re: [gmx-users] Question about Andersen thermostat

2012-01-18 Thread Justin A. Lemkul
Size Zheng wrote: Dear All, We are doing a simulation for ice melting in Efield with thermostat. We would like use Andersen thermostat to couple the temperature but found that it is not implemented yet, even on the latest version of GROMACS. Is there any way we can employ Andersen thermostat d

[gmx-users] Question about Andersen thermostat

2012-01-18 Thread Size Zheng
Dear All, We are doing a simulation for ice melting in Efield with thermostat. We would like use Andersen thermostat to couple the temperature but found that it is not implemented yet, even on the latest version of GROMACS. Is there any way we can employ Andersen thermostat directly on GROMACS

Re: [gmx-users] Chromophore residue patch in gromacs

2012-01-18 Thread Peter C. Lai
Are you crosslinking the chromophore to an atom in residue 51? Can you generate a correct topology without the chromophore as a check? On 2012-01-19 11:50:37AM +0900, bharat gupta wrote: > Hi, > > I have been trying to attach the chromophore of GFP in charmm ff parameter > files. The parameters

[gmx-users] Chromophore residue patch in gromacs

2012-01-18 Thread bharat gupta
Hi, I have been trying to attach the chromophore of GFP in charmm ff parameter files. The parameters have been obtained from a published article. After making the changes as per the documentation ( http://www.gromacs.org/Documentation/How-tos/Adding_a_Residue_to_a_Force_Field) , I am getting follo

Re: [gmx-users] mdrun-gpu error

2012-01-18 Thread Mark Abraham
On 19/01/2012 2:59 AM, aiswarya.pa...@gmail.com wrote: Hi, Its going into the running mode but gets hang there for long hours which generating any data in the output file. And am not able to figure out the error file_doc. Please anyone knows what's going wrong. No, but you should start tryin

Re: [gmx-users] mdrun-gpu error

2012-01-18 Thread aiswarya . pawar
Hi, Its going into the running mode but gets hang there for long hours which generating any data in the output file. And am not able to figure out the error file_doc. Please anyone knows what's going wrong. Thanks Sent from my BlackBerry® on Reliance Mobile, India's No. 1 Network. Go for it!

Re: [gmx-users] mdrun-gpu error

2012-01-18 Thread Szilárd Páll
Hi, Most of those are just warnings, the only error I see there comes from the shell, probably an error in your script. Cheers, -- Szilárd On Wed, Jan 18, 2012 at 12:27 PM, aiswarya pawar wrote: > Hi users, > > Am running mdrun on gpu . I receive an error such as= > > WARNING: This run will g

Re: [gmx-users] Regarding trajectory file

2012-01-18 Thread Mirco Wahab
On 18.01.2012 07:31, Ravi Kumar Venkatraman wrote: Dear All, I have ran a 10 ns production run for chloranil in 500 methanol solvent box. I want to get the coordinates of solvent and solute at different time steps from the trajectory file (*.xtc). Can anybody tell me how to extract the details

Re: [gmx-users] Error in installation

2012-01-18 Thread ahmet yıldırım
Hi, 1.method: You can install it from Synaptic package manager. 2.method: sudo apt-get install libfftw3-dev Later, in gromacs directory ./configure sudo make sudo make install sudo make mdrun sudo make links 2012/1/18 Mark Abraham > On 18/01/2012 7:30 PM, kumud agarwal wrote: > > Hi > > I have

Re: [gmx-users] option -r2 on g_hbond, a third HB citerion?

2012-01-18 Thread Mark Abraham
On 18/01/2012 8:35 PM, Mr Bernard Ramos wrote: Hi everyone! On this page http://manual.gromacs.org/online/g_hbond.html there is an option -r2 when using g_hbond. What is this r2? I can't find it in the Gromacs manual. option -a is the angle H-O-O, option -r is the O-O distance which can be

Re: [gmx-users] pb2gmx SS bond selection

2012-01-18 Thread Justin A. Lemkul
pitheve...@free.fr wrote: Dear all, I'm using the option -ss to select the SS bonds I want to preserve when so problem occur with multiple bonds possible. The problem is that pdb2gmx asks me if I want to preserve the bound between an atom or not. It is very difficult to do this automatically

Re: [gmx-users] Error in installation

2012-01-18 Thread Mark Abraham
On 18/01/2012 7:30 PM, kumud agarwal wrote: Hi I have been trying to install Gromacs on ubuntu. After make command I got the following error */usr/bin/ld: /usr/local/lib/libfftw3f.a(alloc.o): relocation R_X86_64_32 against `.rodata.str1.1' can not be used when making a shared object; recompi

Re: AW: [gmx-users] Regarding trajectory file

2012-01-18 Thread Justin A. Lemkul
Rausch, Felix wrote: Or you could use trjconv in a little script to convert the snapshots you like to .pbd. Use the –b and –e flags to choose the respective time points. Also see http://www.gromacs.org/Documentation/How-tos/Using_Commands_in_Scripts for the use trjconv non-interactively.

[gmx-users] mdrun-gpu error

2012-01-18 Thread aiswarya pawar
Hi users, Am running mdrun on gpu . I receive an error such as= WARNING: This run will generate roughly 38570 Mb of data WARNING: OpenMM does not support leap-frog, will use velocity-verlet integrator. WARNING: OpenMM supports only Andersen thermostat with the md/md-vv/md-vv-avek integrators.

[gmx-users] pb2gmx SS bond selection

2012-01-18 Thread pithevenet
Dear all, I'm using the option -ss to select the SS bonds I want to preserve when so problem occur with multiple bonds possible. The problem is that pdb2gmx asks me if I want to preserve the bound between an atom or not. It is very difficult to do this automatically. Is there a way to tell pdb2g

[gmx-users] option -r2 on g_hbond, a third HB citerion?

2012-01-18 Thread Mr Bernard Ramos
Hi everyone!   On this page http://manual.gromacs.org/online/g_hbond.html there is an option -r2 when using g_hbond. What is this r2? I can't find it in the Gromacs manual. option -a is the angle H-O-O, option -r is the O-O distance which can be switched to H-A by using the "-da no". Nee

AW: [gmx-users] Regarding trajectory file

2012-01-18 Thread Rausch, Felix
Or you could use trjconv in a little script to convert the snapshots you like to .pbd. Use the -b and -e flags to choose the respective time points. Also see http://www.gromacs.org/Documentation/How-tos/Using_Commands_in_Scripts for the use trjconv non-interactively. Good luck. Von: gmx-u

RE: [gmx-users] questions on distance restraints

2012-01-18 Thread NG HUI WEN
Dear Tsjerk, Thanks very much indeed for confirming this, really appreciate it. I will do as you suggest to have a more thorough check. Best wishes, Huiwen From: gmx-users-boun...@gromacs.org [mailto:gmx-users-boun...@gromacs.org] On Behalf Of Tsjerk Wassenaar Sent: Wednesday, January 18, 2012

[gmx-users] Error in installation

2012-01-18 Thread kumud agarwal
Hi I have been trying to install Gromacs on ubuntu. After make command I got the following error */usr/bin/ld: /usr/local/lib/libfftw3f.a(alloc.o): relocation R_X86_64_32 against `.rodata.str1.1' can not be used when making a shared object; recompile with -fPIC* */usr/local/lib/libfftw3f.a: c