Re: [gmx-users] RF and TI

2009-12-05 Thread Alexey Odinokov
But my system is rigid benzene molecule, and all intramolecular interactions are absent. The RF modifies a short-range electrostatic potential. Is it correct for both decoupling scheme and manual method? Where is the difference? And what about additive constant (named Crf in the manual, formula

[gmx-users] Problems

2009-12-05 Thread pawan raghav
When defining the box dimention then how do I know about the distance of protein from the box wall? Which should be greater than half of the Cut-Off (1.4nm) (according to some tutorial). Then what are longest cutoff which must be shorter than half the shortest box vector to satisfy the minimum

Re: [gmx-users] Problems

2009-12-05 Thread Justin A. Lemkul
pawan raghav wrote: When defining the box dimention then how do I know about the distance of protein from the box wall? Which should be greater than half of the You know because you specify it with editconf -d :) Cut-Off (1.4nm) (according to some tutorial). This solute-wall distance

[gmx-users] Re: gmx-users Digest, Vol 68, Issue 35

2009-12-05 Thread Stefan Hoorman
Stefan Hoorman wrote: Stefan Hoorman wrote: How can I calculate the angle between a helix inserted in a membrane and the axis perpendicular to the surface of the membrane. I have tried using g_helixorient, but the graphs all come as a straight line in

Re: [gmx-users] Reducing Standard Error output

2009-12-05 Thread Jack Shultz
Even though I can sucessfully run this when I remove the verbose flag, it causes another problem. We keep trac of the progress of indivual simulations using a code modfication in sim_util.c 124: f = fopen(progress.txt, w); 125- if (!f) return; 126- fprintf(f, %g, (step -

Re: [gmx-users] intramolecular LJ and Coulomb interactions

2009-12-05 Thread Justin A. Lemkul
Vitaly V. Chaban wrote: Hi, Is there a way to output only intramolecular interaction (LJ and Coulomb but not bond, angle, etc) energies (with a respect of exclusions, of course). It seems LJ-(SR) and Coulomb-(SR) terms in g_energy include all interaction, both inter- and intramolecular ones.

[gmx-users] Re: intramolecular LJ and Coulomb interactions

2009-12-05 Thread Vitaly V. Chaban
On Sat, Dec 5, 2009 at 10:40 PM, Justin A. Lemkul jalem...@vt.edu wrote: Vitaly V. Chaban wrote: Hi, Is there a way to output only intramolecular interaction (LJ and Coulomb but not bond, angle, etc) energies (with a respect of exclusions, of course). It seems LJ-(SR) and Coulomb-(SR)

[gmx-users] Re: intramolecular LJ and Coulomb interactions

2009-12-05 Thread Justin A. Lemkul
Vitaly V. Chaban wrote: On Sat, Dec 5, 2009 at 10:40 PM, Justin A. Lemkul jalem...@vt.edu wrote: Vitaly V. Chaban wrote: Hi, Is there a way to output only intramolecular interaction (LJ and Coulomb but not bond, angle, etc) energies (with a respect of exclusions, of course). It seems

Re: [gmx-users] Reducing Standard Error output

2009-12-05 Thread Mark Abraham
Jack Shultz wrote: Even though I can sucessfully run this when I remove the verbose flag, it causes another problem. We keep trac of the progress of indivual simulations using a code modfication in sim_util.c 124: f = fopen(progress.txt, w); 125- if (!f) return; 126- fprintf(f,

Re: [gmx-users] Re: gmx-users Digest, Vol 68, Issue 35

2009-12-05 Thread Mark Abraham
Stefan Hoorman wrote: Stefan Hoorman wrote: Stefan Hoorman wrote: How can I calculate the angle between a helix inserted in a membrane and the axis perpendicular to the surface of the membrane. I have tried using

[gmx-users] Questions about hydrogen bond lifetime

2009-12-05 Thread Jian Dai
Hi, dear all (especially for David): When reading the paper Thermodynamics of hydrogen bonding in hydrophilic and hydrophobic media and its supplementary material and the code gmx_hbond.c for the analysis of hydrogen bond, I got questions: 1. When calculating the autocorrelation function of the