[gmx-users] verified address blues

2013-01-07 Thread Kabir Roy Chowdhury
Dear gmx-mail experts, Happy 2013! I have been struggling to send New-Year greetings using a Thunderbird list with 50+ addresses, and sought help from GMX support. Below is a nutshell of the exchanges: === *Jan 02*: I get the error message 5.5.3. (more than 26 addresses) while trying to send

Re: [gmx-users] verified address blues

2013-01-07 Thread Justin Lemkul
On 1/7/13 7:54 AM, Kabir Roy Chowdhury wrote: Dear gmx-mail experts, Happy 2013! I have been struggling to send New-Year greetings using a Thunderbird list with 50+ addresses, and sought help from GMX support. Below is a nutshell of the exchanges: === *Jan 02*: I get the error message 5.5.3.

Re: [gmx-users] verified address blues

2013-01-07 Thread Kabir Roy Chowdhury
Sorry, Justin - I should have known better. Please remove my message if possible. -kabir...@gmx.com *On 01/07/2013 02:07 PM, Justin Lemkul wrote:* On 1/7/13 7:54 AM, Kabir Roy Chowdhury wrote: Dear gmx-mail experts, Happy 2013! I have been struggling to send New-Year greetings using a

Re: [gmx-users] gromacs on GPU

2013-01-07 Thread Szilárd Páll
Hi James, Don't use the OpenMM accelerated mdrun for explicit solvent simulations. For such runs any modern CPU with 4-8 cores will probably be as fast or faster than most GPUs. However, do consider the 4.6 *native* heterogeneous GPU-accelerated code. This new efficient code can provide 2-4x

Re: [gmx-users] gromacs on GPU

2013-01-07 Thread James Starlight
Hi Szilárd! As I understood you correctly gromacs-4.6 have specific algorithm (independent on openMM?) for gpu-based calculations havent ? If it true how I should compilate such new gpu-based gromacs? In the gromacs-4.6-beta-3 folder I've found instructuon for the standart installation via cmake

Re: [gmx-users] npt equilibrium

2013-01-07 Thread Peter Lai
Shima Arasteh shima_arasteh2...@yahoo.com wrote: Dear Peter, Would you please let me know how much time approximately the system of protein/popc took to be npt-equilibrated sufficiently, in accordance with the simulation you have reported in Beyond modeling paper. In fact, I put the

[gmx-users] Gromacs + Mopac error

2013-01-07 Thread raul arias
I'm trying to compile Gromacs with mopac using the instructions in the tutorial (the compilation of mopac was made with gfortran since f77 gave me error) ./configure --prefix=/home/raul/gromacs_mopac LIBS=-lmopac LDFLAGS=-L/home/raul/fftw/lib -L/home/raul/lib CPPFLAGS=-DUSE_MOPAC

RE: [gmx-users] selecting res CYS from G53a5 using pdb2gmx

2013-01-07 Thread Payman Pirzadeh
Dear Justin, I have been able to temporarily solve my force field parameter problem (at least test the new parameters). I defined a new Cys residue say CYSA (as anion) in the rtp file. But how can I prevent the pdb2gmx from adding hydrogen to the Cysteine residue? Addition of this extra hydrogen

RE: [gmx-users] selecting res CYS from G53a5 using pdb2gmx

2013-01-07 Thread Payman Pirzadeh
Two clarifications: 1. can utilization of an index file help during topology generation for my problem? 2. I use -inter for getting prompted for LYS, ARG, ... but CYS is not one of them. Cheers, Payman -Original Message- From: gmx-users-boun...@gromacs.org

Re: [gmx-users] selecting res CYS from G53a5 using pdb2gmx

2013-01-07 Thread Justin Lemkul
On 1/7/13 7:36 PM, Payman Pirzadeh wrote: Two clarifications: 1. can utilization of an index file help during topology generation for my problem? No. Reading pdb2gmx -h will tell you this. 2. I use -inter for getting prompted for LYS, ARG, ... but CYS is not one of them. CYS should be

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

Re: [gmx-users] npt equilibrium

2013-01-07 Thread Shima Arasteh
I got it. Thanks for your reply. Sincerely, Shima From: Peter Lai p...@uab.edu To: Shima Arasteh shima_arasteh2...@yahoo.com; Discussion list for GROMACS users gmx-users@gromacs.org Sent: Monday, January 7, 2013 7:02 PM Subject: Re: [gmx-users] npt

RE: [gmx-users] selecting res CYS from G53a5 using pdb2gmx

2013-01-07 Thread Payman Pirzadeh
Dear Justin, Thanks for your suggestions. It all made sense. But I ran into a strange problem. I checked the mail list, and all I found was about misspelling the force field name. I copied the whole gromos53a5.ff directory into my working folder, copied the modified .rtp, .dat and .hdb files into

[gmx-users] enough time for simulation

2013-01-07 Thread mohammad agha
Dear GROMACS Specialists, I have one system consists of many surfactant molecules that they create several micelles. How should I know that time of simulation is enough or not? that means where is the enough time for equilibrium of system? To creation of micelles, the small oligomers are merged