Re: [gmx-users] Questions regarding Polarization Energy Calculation

2012-08-17 Thread jesmin jahan
Okay thanks. I got it. :-) Best Regards, Jesmin On Fri, Aug 17, 2012 at 11:17 PM, Mark Abraham wrote: > On 18/08/12, *jesmin jahan * wrote: >> >> Hi Mark, >> >> Thanks for your reply. >> >> In the ffnonbonded.itp, I set all sigma and epsilon values to zero. >> So, the the LJ energy is coming as

Re: [gmx-users] Questions regarding Polarization Energy Calculation

2012-08-17 Thread Mark Abraham
On 18/08/12, *jesmin jahan * wrote: Hi Mark, Thanks for your reply. In the ffnonbonded.itp, I set all sigma and epsilon values to zero. So, the the LJ energy is coming as zero. But the coulomb potential is non zero. What should I do to make it zero? Each charge-charge interaction contribute

Re: [gmx-users] xtc file and trr file

2012-08-17 Thread Justin Lemkul
On 8/17/12 6:44 PM, Acoot Brett wrote: This explaination of Justin is correct. For VMD read trr file, it cannot read more than 522 frames, and it can read far more than 522 frames of xtc file. However if the XTC is too large, VMD will gives the error of runtime error. Can anyone solve this p

Re: [gmx-users] xtc file and trr file

2012-08-17 Thread Acoot Brett
This explaination of Justin is correct. For VMD read trr file, it cannot read more than 522 frames, and it can read far more than 522 frames of xtc file. However if the XTC is too large, VMD will gives the error of runtime error. Can anyone solve this problem?   I will try gmxcheck.   Cheers,  

Re: [gmx-users] xtc file and trr file

2012-08-17 Thread Justin Lemkul
On 8/17/12 5:52 PM, Acoot Brett wrote: Dear Justin, But it is very difficult to explain why the xtc file gives more frames in VMD than trr file. Can you explain it? Or VMD has made the modification when read the xtc file or the trr file? It is possible that VMD ran out of memory attemptin

[gmx-users] xtc file and trr file

2012-08-17 Thread Acoot Brett
Dear Justin,   But it is very difficult to explain why the xtc file gives more frames in VMD than trr file. Can you explain it? Or VMD has made the modification when read the xtc file or the trr file?   Cheers,   Acoot - Forwarded Message - From: Justin Lemkul To: Acoot Brett ; Discuss

Re: [gmx-users] xtc file and trr file

2012-08-17 Thread Justin Lemkul
On 8/17/12 4:33 PM, Acoot Brett wrote: Dear All, Follwong is the MD mdp file I used for my production MD, which I downloaded from http://www.bevanlab.biochem.vt.edu/Pages/Personal/justin/gmx-tutorials/lysozyme/Files/md.mdp. Clearly it writes how it extract xtp file. Will you please explain t

[gmx-users] xtc file and trr file

2012-08-17 Thread Acoot Brett
Dear All, Follwong is the MD mdp file I used for my production MD, which I downloaded from http://www.bevanlab.biochem.vt.edu/Pages/Personal/justin/gmx-tutorials/lysozyme/Files/md.mdp. Clearly it writes how it extract xtp file. Will you please explain to me which is the command for the extracti

Re: [gmx-users] 4 question

2012-08-17 Thread Shima Arasteh
 :-) Thanks Justin. Sincerely, Shima - Original Message - From: Justin Lemkul To: Shima Arasteh ; Discussion list for GROMACS users Cc: Sent: Friday, August 17, 2012 10:07 PM Subject: Re: [gmx-users] 4 question On 8/17/12 1:33 PM, Shima Arasteh wrote: > Hi, > > The .pdb file

Re: [gmx-users] 4 question

2012-08-17 Thread Justin Lemkul
On 8/17/12 1:33 PM, Shima Arasteh wrote: Hi, The .pdb file either should be dowloaded from RCSB website or you need to construct the structure by a software such as hyperchem and save the structure in .pdb format, so you are not supposed to get .pdb output through pdb2gmx command. The ou

Re: [gmx-users] 4 question

2012-08-17 Thread Shima Arasteh
Hi, The .pdb file either should be dowloaded from RCSB website or you need to construct the structure by a software such as hyperchem and save the structure in .pdb format, so you are not supposed to get .pdb output through pdb2gmx command. About the second problem, I think you need to chose t

Re: [gmx-users] 4 question

2012-08-17 Thread Justin Lemkul
On 8/17/12 1:19 PM, Hossein Lanjanian wrote: Hi we are new academic users of GROMACS. we installed gromacs 4.5.5 and tried to learn the job by using tutorials found in the "gromacs.org" web site. There is one question: we successfully ran the "1PGB.pdb". we know that *.pdb or *.gro files ar

[gmx-users] 4 question

2012-08-17 Thread Hossein Lanjanian
Hi we are new academic users of GROMACS. we installed gromacs 4.5.5 and tried to learn the job by using tutorials found in the "gromacs.org" web site. There is one question: we successfully ran the "1PGB.pdb". we know that   *.pdb or *.gro files  are necessary for the rest of analysis however we h

[gmx-users] Re: atom numbering

2012-08-17 Thread dariush
Thank you dear Justin! Dariush On Fri, Aug 17, 2012 at 11:04 AM, Justin Lemkul [via GROMACS] < ml-node+s5086n5000298...@n6.nabble.com> wrote: > > > On 8/17/12 10:41 AM, dariush wrote: > > genconf -renumber works well for renumbering. However, after > minimization > > of that renumbered .gro fil

Re: [gmx-users] Questions regarding Polarization Energy Calculation

2012-08-17 Thread jesmin jahan
Hi Mark, Thanks for your reply. In the ffnonbonded.itp, I set all sigma and epsilon values to zero. So, the the LJ energy is coming as zero. But the coulomb potential is non zero. What should I do to make it zero? Energies (kJ/mol) GB PolarizationLJ (SR) Coulomb (SR) Potential

Re: [gmx-users] Re: atom numbering

2012-08-17 Thread Justin Lemkul
On 8/17/12 10:41 AM, dariush wrote: genconf -renumber works well for renumbering. However, after minimization of that renumbered .gro file, I have previous numbering. You always will. The numbering is read from the topology, so simulation output will always be numbered that way and you wil

[gmx-users] Re: atom numbering

2012-08-17 Thread dariush
genconf -renumber works well for renumbering. However, after minimization of that renumbered .gro file, I have previous numbering. Dariush On Thu, Aug 16, 2012 at 5:54 PM, Justin Lemkul [via GROMACS] < ml-node+s5086n5000267...@n6.nabble.com> wrote: > > > On 8/16/12 5:22 PM, dariush wrote: > > De

Re: [gmx-users] xtc file and trr file

2012-08-17 Thread Mark Abraham
On 17/08/2012 6:46 PM, Acoot Brett wrote: Dear All, After a production MD, both the xtc file and trr file are produced. trr file is much larger than the xtc file. But when we openned the original gro file one of the file from xtc file and trr file in VMD, we will find the xtc contains more fr

Re: [gmx-users] how to check total charge by command?

2012-08-17 Thread Justin Lemkul
On 8/17/12 5:25 AM, Albert wrote: Dear: I am going to check the total charge of my system from a gro file. I am wondering which command should I use? I check the manual and found nothing for it. Charge information is stored in the topology, not the coordinate file. -Justin --

Re: [gmx-users] xtc file and trr file

2012-08-17 Thread Chandan Choudhury
On Fri, Aug 17, 2012 at 2:16 PM, Acoot Brett wrote: > > Dear All, > > After a production MD, both the xtc file and trr file are produced. trr > file is much larger than the xtc file. But when we openned the original gro > file one of the file from xtc file and trr file in VMD, we will find the xtc

[gmx-users] how to check total charge by command?

2012-08-17 Thread Albert
Dear: I am going to check the total charge of my system from a gro file. I am wondering which command should I use? I check the manual and found nothing for it. thank you very much best A -- gmx-users mailing listgmx-users@gromacs.org http://lists.gromacs.org/mailman/listinfo/gmx-users

[gmx-users] xtc file and trr file

2012-08-17 Thread Acoot Brett
Dear All, After a production MD, both the xtc file and trr file are produced. trr file is much larger than the xtc file. But when we openned the original gro file one of the file from xtc file and trr file in VMD, we will find the xtc contains more frames in comparison with the trr file. Will