Re: [gmx-users] About the removal of the center of mass

2012-02-21 Thread Yang Ye
yes. you need to and can still put System for the removal group. > > On Feb 21, 2012 5:51 PM, "xiaojing gong" wrote: >> >> Dear all, >> I used the GMX 4.5.5 to run a simulation with a fixed plane and water. >> I wonder to know if I fix the plane, shall I use the command of >> the remov

Re: [gmx-users]Question about reduced unit for coarse grain

2011-06-22 Thread Yang Ye
Hi, The unit in output is in assumed to be for the standard unit input while the value is in reduced unit. So you need to do your own calculation to figure out what's the reduced unit is. Regards, Yang Ye On Thu, Jun 23, 2011 at 5:48 AM, Ye Yang wrote: > Dear all: > I s

Re: [gmx-users] add a new force field to the pdb2gmx list

2010-11-30 Thread Yang Ye
Please use "find" to locate FF.dat in your particular installation. Regards, Yang Ye On Wed, Dec 1, 2010 at 12:17 PM, Jia Haitao wrote: > Dear all, > I have constructed a new CG force field named "polycg", and added them > to direction ..$GMXLIB/polycg.ff. C

Re: [gmx-users] cvs version

2010-03-28 Thread Yang Ye
chive at http://www.gromacs.org/search before posting! > Please don't post (un)subscribe requests to the list. Use the > www interface or send it to gmx-users-requ...@gromacs.org. > Can't post? Read http://www.gromacs.org/mailing_lists/users.php > -- Regards, Yang Ye -- gm

Re: [gmx-users] [help]How to produce .top file from Material Studio

2010-03-22 Thread Yang Ye
No way from MS. Check x2top. Yang YE On Mon, Mar 22, 2010 at 10:42 PM, 程迪 wrote: > Hi,everyone > > I have build a SiO2 structure in Material Studio, And I've set the xyz > coordinates and force field parameters of the structure. Is there some tool > or method to produce a

Re: [gmx-users] Is there anyone who has tip3p.gro?

2010-01-18 Thread Yang Ye
ubscribe requests to the list. Use the > www interface or send it to gmx-users-requ...@gromacs.org. > Can't post? Read http://www.gromacs.org/mailing_lists/users.php > -- Regards, Yang Ye -- gmx-users mailing listgmx-users@gromacs.org http://lists.gromacs.org/mailman/listinfo/gmx

Re: [gmx-users] compiling problem

2009-09-17 Thread Yang Ye
Just a work-around, force mpicc to point to cc. alias mpicc=cc Yang Ye On Wed, Sep 16, 2009 at 5:35 PM, Mu Yuguang (Dr) wrote: > No, even I do not use mpi , the error is still there. > > > > Regards > > Yuguang > > > -- > > *

Re: [gmx-users] compiling problem

2009-09-15 Thread Yang Ye
Is LAM-MPI's binary in PATH? if you run mpicc from console, will it also show "No such file or directory"? Check LAM-MPI installation. Regards, Yang Ye On Wed, Sep 16, 2009 at 12:39 PM, Mu Yuguang (Dr) wrote: > Hi, > I use > git clone git://git.gromacs.org/gromacs.gi

Re: [gmx-users] Gromacs 4 Binaries for Mac

2008-12-23 Thread Yang Ye
Get it through MacPorts? There is a free GUI frontend, porticus. Yang Ye On Tue, Dec 23, 2008 at 5:41 PM, Hadas Leonov wrote: > Hi guys, > > Is there any intension to release binaries for Gromacs 4, for Mac OS X > Leopard? > > Thanks, > Hadas. > > =

Re: Re: [gmx-users] how to set up a rigid system

2008-12-08 Thread Yang Ye
3 1 1.00e-01 0.1 c0 is the distance in nm. for c1, put a relative large value to make it stiff. Yang Ye On Tue, Dec 9, 2008 at 8:56 AM, Xin Liu <[EMAIL PROTECTED]> wrote: > Yang Ye > > I can understand I need to put (3n-6) constraints to the system, but I > do

Re: [gmx-users] how to set up a rigid system

2008-12-05 Thread Yang Ye
www.gromacs.org/mailman/listinfo/gmx-users > Please search the archive at http://www.gromacs.org/search before posting! > Please don't post (un)subscribe requests to the list. Use the > www interface or send it to [EMAIL PROTECTED] > Can't post? Read http://www.gromacs.org/mailing_lists/u

Re: [gmx-users] About REMD specification in mdrun argument

2008-12-01 Thread Yang Ye
omacs.org > http://www.gromacs.org/mailman/listinfo/gmx-users > Please search the archive at http://www.gromacs.org/search before posting! > Please don't post (un)subscribe requests to the list. Use the > www interface or send it to [EMAIL PROTECTED] > Can't pos

[gmx-users] Re:

2008-11-25 Thread Yang Ye
; http://www.gromacs.org/mailman/listinfo/gmx-users > Please search the archive at http://www.gromacs.org/search before posting! > Please don't post (un)subscribe requests to the list. Use the > www interface or send it to [EMAIL PROTECTED] > Can't p

Re: [gmx-users] mdrun in parallel

2008-11-21 Thread Yang Ye
grompp -np 16 On 11/21/08 7:06 PM, [EMAIL PROTECTED] wrote: Hi All, I'd need an help to run GROMACS 3.3.3 in parallel. I'm running mdrun in parallel using the command: mpirun -machinefile /storage1/home/rgr/machines_16 -np 16 /storage2/rgr/software/gromacs/bin/mdrun_d -s min0.tpr -g min0.log -

Re: [gmx-users] the Temperature in the mdp.file

2008-11-10 Thread Yang Ye
Can anyone of you tell me what is the reason for that? > > Thank you in advance. > > Yang > > ___ > gmx-users mailing listgmx-users@gromacs.org > http://www.gromacs.org/mailman/listinfo/gmx-users > Please search the arch

Re: [gmx-users] Re: High frequency output slow down the simulation?

2008-11-08 Thread Yang Ye
Writing on local or remote certainly makes a difference. How about the speed with no output at all? Regards, Yang Ye From: xianghong qi <[EMAIL PROTECTED]> To: Discussion list for GROMACS users Sent: Sunday, November 9, 2008 12:36:40 AM Subject: Re

Re: [gmx-users] Re: High frequency output slow down the simulation?

2008-11-08 Thread Yang Ye
More details please. Local hard disk? How much the time difference? YY On 11/8/08 12:41 PM, xianghong qi wrote: Hello, all: I compare the two simulations with different output frequency for .xtc file in same machine. One with low frequency runs much faster than the one with high frequency.

Re: [gmx-users] mpi- gromacs

2008-10-29 Thread Yang Ye
version for all analysis programs. Regards, Yang Ye On 10/30/08 11:40 AM, Chih-Ying Lin wrote: Hi Here is my pdb file. #!/bin/bash #PBS -l nodes=2 cat $PBS_NODEFILE echo Working directory is $PBS_O_WORKDIR cd $PBS_O_WORKDIR mpirun -np 2 g_energy_mpi -f minim_ener.edr -o minim_ener.xvg

Re: [gmx-users] About the example case "A toy peptide in water" and other protein case (CG martini force field )

2008-10-26 Thread Yang Ye
miss anything in the tutorial/example? Read the manual more carefully to understand how grompp works. This list just tries to help any user but not spoon-feed. Regards, Yang Ye On 10/24/08 3:19 PM, wang wrote: Dear Sir , I used your CG parameters and gromacs V3.3  to simulate protein aggregation

Re: [gmx-users] Selecting part of the trajectory

2008-10-13 Thread Yang Ye
this secondary trajectory. Regards, Yang Ye - Original Message From: #NGUYEN CONG TRI# <[EMAIL PROTECTED]> To: Discussion list for GROMACS users Sent: Monday, October 13, 2008 3:47:32 PM Subject: [gmx-users] Selecting part of the trajectory Hi all, I want get the snapshots eve

Re: [gmx-users] Cann't get the same result ?

2008-09-21 Thread Yang Ye
This is normal. You shall get statistical identical properties between runs. Besides obvious reasons (gen_vel=yes and gen_seed=-1, or optimize_fft=yes), there might be other factors. Regards, Yang Ye On 9/22/08 8:26 AM, xuji wrote: > Hi all: > I run mdrun of gromacs-3.3.3 6 times of a

Re: [gmx-users] Dissipative Particle Dynamics (DPD)

2008-09-01 Thread Yang Ye
there is dpdmacs available.. Regards, Yang Ye - Original Message From: Suman Chakrabarty <[EMAIL PROTECTED]> To: Discussion list for GROMACS users Sent: Monday, September 1, 2008 5:50:15 PM Subject: [gmx-users] Dissipative Particle Dynamics (DPD) Dear all, since one of my

Re: [gmx-users] How to calculate van der Waals potential between a given residue and the rest of residues in the protein?

2008-08-31 Thread Yang Ye
A more complete answer is that to define energy groups for this reside and rest residues respectively, generate the tpr with grompp and then use mdrun -rerun to run through the existing trajectory to obtain what you wanted.  Regards, Yang Ye - Original Message From: Justin A. Lemkul

Re: [gmx-users] Run test in parallel

2008-08-06 Thread Yang Ye
successfully Only 0 energies in the log file Can I ignore above error messages? Most likely. I checked those errors before and they are indeed not errors. gmxtest suite is not just not very up-to-date with gromacs. Thank you in advance. Regards, Teru 2008/8/7 Yang Ye <[EMAIL PROTEC

Re: [gmx-users] Run test in parallel

2008-08-06 Thread Yang Ye
experience with OpenMPI. Regards, Yang Ye ikedaike wrote: Hi I built GROMACS-3.3.3 with GCC-3.4.6 and OpenMPI-1.2.5 on CentOS 4.5(Intel Core2 Duo). I tested with gmxtest-3.3.3 and all tests passed in non-parallel. However, when I tested in parallel, I encountered the following messages. [Use 2 Cores

Re: [gmx-users] some questions about gmx_density.c

2008-08-05 Thread Yang Ye
ating density) or the template. To understand some development work for Gromacs (not only analysis tools), I recommend Erik's talk in CSC2007. http://www.csc.fi/english/research/sciences/chemistry/courses/gmx2007 "Thursday 1.3. Workshop day 3" *Gromacs development.* Regards, Yang Ye

Re: [gmx-users] settle issue

2008-07-29 Thread Yang Ye
David van der Spoel wrote: Mu Yuguang (Dr) wrote: Dear All, When I try to simulate TIP4Pew water box at 298K, and found the density got from gromacs is relative low (983 g/cm3) than the amber (sander) version 994 g/cm3. I cannot find the reason. The parameters for the tip4pew model are identical

Re: [gmx-users] Error:Cannot determine precision of trn file

2008-07-10 Thread Yang Ye
[EMAIL PROTECTED] wrote: Dear colleagues, I successfully finished a 3 ns gromacs run using 40 nodes. When, I tried to convert .trr file to .xtc using trjconv, the run stops at 560 frame giving error "cannot determimine precision of trn file". I tried various options like -s

Re: [gmx-users] low cpu usage

2008-06-25 Thread Yang Ye
It could be system-specific. Could you try out dppc in tutor/gmxbench or download gmxbench from gromacs' website (section Benchmark)? Regards, Yang Ye Dr. Bernd Rupp wrote: same problem as mpich2. regards, Bernd Am Mittwoch, 25. Juni 2008 schrieb Yang Ye: I don't think Pytho

Re: [gmx-users] low cpu usage

2008-06-25 Thread Yang Ye
I don't think Python is to be blamed. How about lam-mpi? Regards, Yang Ye Dr. Bernd Rupp wrote: Dear all, CPU: Intel(R) Core(TM)2 Extreme CPU Q6850 @ 3.00GHz System: fedora 8 Kernel: 2.6.25.6-27.fc8 #1 SMP gromacs 3.3.3 correct compiled MPI : mpich or mpich2 We had the same problem

Re: [gmx-users] Does GROMACS have a multi-thread implementation?

2008-06-24 Thread Yang Ye
For latest stable 3.3.3, there is no multi-thread implementation. For CVS version for coming 4.0, might be, I am not sure, but that's only for testing. Your question tricky without indicating the version. Regards, Yang Ye Lee Soin wrote: But I see that in mdrun there's an option

Re: [gmx-users] Re: The number of PME nodes

2008-06-23 Thread Yang Ye
this topic. So I think it's maybe better we discuss this problem in private email. I think Yang Ye simply meant that you should choose a meaningful subject - not "Re: [gmx-developers]". I also forward this to the users mailing list, which is the best place for this discus

Re: [gmx-users] Re: The number of PME nodes

2008-06-23 Thread Yang Ye
there's no other >> people that is interest in this topic. So I think it's maybe better we >> discuss this problem in private email. >> > I think Yang Ye simply meant that you should choose a meaningful subject - > not "Re: [gmx-developers]". I als

Re: [Bulk] [gmx-users] RMSD graph

2008-06-17 Thread Yang Ye
p and then center that group. Regards, Yang Ye Anamika Awasthi wrote: Dear All, Please tell, what should I predict from this graph? I can understand this is normal type of graph. Sorry for inconvenience, but I want to ask some questions, my this job crashed many time, becaus

Re: [gmx-users] [Fwd: some questions about simulate a liquid-vapor interface of a solution, many thanks]

2008-06-12 Thread Yang Ye
Hi, beibei The first point made by Mark is to check whether volume stabilizes when the system is subjected to NPT simulation. Regards, Yang Ye Mark Abraham wrote: > Please leave GROMACS-related correspondence on the GROMACS mailing list. > That way others can follow and contribute

Re: [gmx-users] amber ports in gromas - bond length warning

2008-05-25 Thread Yang Ye
What are the atoms involved in the Long Bond waring? For cyclic peptide, you also need to hand edit the topology file after pdb2gmx to connect the last residue to the first residue. Regards, Yang Ye David van der Spoel wrote: N-J.M. Macaluso wrote: Hello, I am using the Amber ports for

Re: [gmx-users] how to edit pdb file

2008-05-21 Thread Yang Ye
://www.wwpdb.org/documentation/format23/sect9.html The same applies to GRO file, which is described in GROMACS manual. Regards, Yang Ye andrea spitaleri wrote: Hi, have look to this: http://stein.bioch.dundee.ac.uk/~charlie/software/pdb-mode/pdb-mode.html I found it very useful regards andrea

Re: [gmx-users] Is such hardware suitable for gromacs

2008-05-07 Thread Yang Ye
tware installation (Linux) and configuration on network and LAM-MPI libraries. Regards, Yang Ye 之光 贾 wrote: > ASUS DSBV-DX/C or Intel S5000VSA > E5410 2.33 * 2 > FB-DIMM 1G * 8... > > I could only find some body test their E5410 on Gromacs in google, but > I am not sure this

Re: [gmx-users] NVT simulation

2008-05-05 Thread Yang Ye
with pcoupl=none Arnab Senapati wrote: - Hi, can anyone tell me how to run a NVT simulation in gromacs. ___ gmx-users mailing listgmx-users@gromacs.org http://www.gromacs.org/mailman/listinfo/gmx-users Please search the archive at http:

Re: [gmx-users] benchmark: buying a new cluster

2008-05-05 Thread Yang Ye
one node, more cores are better. This happens to be my case. If 32-core or more parallel running is planned, 2.8GHz helps. Regards, Yang Ye andrea spitaleri wrote: Hi all, we are going to buy a new cluster and we are in doubt about the frequency to consider. Basically, we have the possibility

Re: [gmx-users] syntax for switching between multiple position restraint .itp in the .top file

2008-04-28 Thread Yang Ye
gards, Yang Ye Low Soo Mei wrote: Hi gmx-users, If I use different position restraints during each stage of minimization, should I separately write all my restraints in the same .top file in this manner, #ifdef LIPID_ALL_POSRE #include "lipid_all_posre.itp" #ifdef WATER

Re: [gmx-users] Choose of force fields of ethanol and B-DNA with 15 base pairs

2008-04-21 Thread Yang Ye
Mark Abraham wrote: Collins Nganou wrote: Dear all. greetings. I need to know what force fields can I Choose to run: 1- ethanol vibrational mode. 2- B-DNA with 15 base pairs Start with a literature search. You'll need to do one later in order to defend your choice. "Some person on a mailing

Re: [gmx-users] how to make choices of COM in the system with freeze group?

2008-04-16 Thread Yang Ye
You can opt for 3). If your system only compose of nanotube and water, why freeze it? Regards, Yang Ye tuyusong wrote: Hi, all, I have a system with one carbon Nanotube and lots of water, in which Nanotube is frozen. How do I remove the center-of-mass: 1) only

Re: [gmx-users] Simulation at different temperature

2008-03-31 Thread Yang Ye
different mdp files with different ref_t. Regards, Yang Ye - Original Message From: s lal badshah <[EMAIL PROTECTED]> To: gromacs Sent: Monday, March 31, 2008 12:48:47 PM Subject: [gmx-users] Simulation at different temperature Dear Experts, Hi ! I want to simulate a protein a

Re: [gmx-users] Position restraint and distance restraints

2008-03-28 Thread Yang Ye
if ;include"disres.itp" Putting semicolon in front of the line effectively turns off that line. Regards, Yang Ye ___ gmx-users mailing listgmx-users@gromacs.org http://www.gromacs.org/mailman/listinfo/gmx-users Please search the archive a

Re: [gmx-users] why trjconv cannot split a file more than 1020 parts

2008-03-27 Thread Yang Ye
Please supply us the output of trjconv. Alternatively, use trjconv -o foo.pdb -sep. Regards, Yang Ye 齐文鹏 wrote: > > I use the trjconv -split 1.0 to split my long xtc file to seperate pdb > files to analysis with the Curves . > > But I cannot split files more than 1020. why? The

Re: [gmx-users] Help needed on using general amber force field (GAFF) in Gromacs

2008-03-13 Thread Yang Ye
ave a solution for almost all molecules. Regards, Yang Ye Xiangyu Fan wrote: Hi all, I am using GAFF force field for Gromacs package to simulate MD of surfactant molecule. I know we can generate .top file using some simple command like pdb2gmx if we use gromos force field. I am just wondering wh

Re: [gmx-users] .gro files generation for a certain time-step interval in a simulation

2008-03-07 Thread Yang Ye
trjconv -dump time Huey Ling Tan wrote: Hi All, I wonder if anyone knows what is the command to use in order to generate .gro files for a certain time-step interval in a simulation? For example, if I have a completed simulation of 10 ns long and I want to output (somehow) 10 .gro files each

Re: [gmx-users] Gromacs setup on dual core machine

2008-03-06 Thread Yang Ye
Ricardo Soares wrote: Hi everybody, I think this may sound rather trivial for most users, but I intend to install gromacs 3.3.1 on a dual core machine and I want to be sure what to do. Could anyone indicate me some online tutorial to do so (as well some simulation examples)? Is this conside

Re: [gmx-users] about parallel run

2008-01-14 Thread Yang Ye
i reckon that you have not built in mpi support to mdrun in GROMACS so each instance of mdrun produces one trajectory rather than running in parallel and produce only one trajectory. Mark Abraham wrote: Yunierkis Perez Castillo wrote: Hi all, I'm new to gromacs. I have setup a protein MD simul

[gmx-users] [Fwd: lipid simulation at low temperature (please help me to transmit the letter )]

2008-01-13 Thread Yang Ye
posting for my friend as her network has some problem. Dear gmx-users, I want to simulate lipid bilayers at temperature as low as 230K, will the water near the head group of lipid freeze? If I want to get a knowledge of the phase of lipid at temperature much lower than zero, what should I

Re: [gmx-users] Fatal error: atoms 970 and 973 in charge group 600 are in different energy groups

2008-01-11 Thread Yang Ye
you shall check what this warning message claims first. Mao-Cai Yan wrote: > Dear colleague, > I want to calculate the Coul-SR energy and LJ energy between the > receptor and PART of my ligand, using a given XTC file with "mdrun > -rerun". I modified "energygrps" in the MDP file, and then type > g

Re: [gmx-users] Asking help about PME

2008-01-10 Thread Yang Ye
shall you find them yourself first? /src/mdlib/*fft* Actual FFT is done by FFTW. Regards, Yang Ye xuji wrote

Re: [Bulk] Re: [gmx-users] Re: Targeted MD

2008-01-10 Thread Yang Ye
Protein are defined by the residue names inside aminoacids.dat. So, it is possible for nucleic acid to be "Protein". Steven Kirk wrote: Mark Abraham <[EMAIL PROTECTED]> wrote Subject: Re: [gmx-users] Re: Targeted MD To: Discussion list for GROMACS users Message-ID: <[EMAIL PROTECTED]> Conten

Re: [gmx-users] Re: Targeted MD

2008-01-09 Thread Yang Ye
wei-xin xu wrote: 2008/1/10, Mark Abraham <[EMAIL PROTECTED]>: Some hints on practices that generally not a good idea to use: Do not use separate thermostats for different components of your system. Some molecular dynamics thermostats only work well in the thermodynamic limit. If y

Re: [gmx-users] Question regarding compatibility of UFF and GROMACS

2008-01-04 Thread Yang Ye
gromacs manual has the answer (FF terms) for you. Subhashis Biswas wrote: Hi, I know this issue has been discussed in some form before, but hough may be I resurface it again. Is it possible to transfer a UFF forcefield to a GROMACS forcefield with help of a script? UFF force-field cannot be

Re: [gmx-users] deleted edr file

2007-12-27 Thread Yang Ye
Use mdrun -rerun (will not be a complete recovery). pragya chohan wrote: Dear users I by mistake deleted the edr file generated from production run. Is there any way to recover or generate the edr file again? It's abou

Re: [gmx-users] different results when using different number cpus

2007-12-05 Thread Yang Ye
1. how long is the simulation? 2. did you start from equilibration (with gen_vel=yes) or production md? 3. ... On 12/5/2007 8:28 PM, Dechang Li wrote: > Dear all, > >   I used Gromacs3.3.1 to do a simulation about two proteins in water(tip3p). > I run two similar simulations, one for 2 cpu

Re: [gmx-users] Ambconv running

2007-12-05 Thread Yang Ye
you shall use AMBER's new2oldparm < new > old to get the old format file. I remember that David Mobley has another ambconv script on his website (http://www.alchemistry.org/) but it is not accessible right now. Regards, Yang Ye On 12/6/2007 3:52 AM, Shozeb Haider wrote: Hi, I a

Re: [gmx-users] Re: Question about embedding a force field with no torsion term

2007-11-21 Thread Yang Ye
Hi,Zhou Bo Please take some time to get to know what's 1-4 interaction, and what is torsion. In simple words, they are of two types: 1-4 belonging to non-bonded interaction; torsion is bonded interaction. So in nature, they are not conflicting each other; The reason why we isolate the definition

Re: [gmx-users] GROMACS in parallel on a multicore PC?

2007-11-21 Thread Yang Ye
On 11/21/2007 7:33 PM, Vasilii Artyukhov wrote: Hi everybody, Sorry for a somewhat technical question, but I'd like to know which is the best way to run GROMACS on a SMP machine (in particular, a multicore PC). The (known) points of interest are: - Does GROMACS support multithreaded executi

Re: [gmx-users] How to specify .mdp file for position restrained simulation?

2007-11-20 Thread Yang Ye
o, you can use this mechanism to do position restraint MD with different parts of the system, or gradually give freedom to the system. Regards, Yang Ye On 11/20/2007 4:18 PM, Maik Goette wrote: Hi Use the following term in your mdp: define = -DPOSRES Now, everythi

Re: [gmx-users] How to add calcium ions at desired position?

2007-11-18 Thread Yang Ye
step 4) shall be add water, minimize energy. step 5) it's a bad idea to couple ion alone, see wiki pls. step 6,7) you shall at least have two stages, em, eq before production md. On 11/19/2007 5:23 AM, Peggy Yao wrote: Hi all, I would like to simulate a protein with calcium ions at the calcium

Re: [gmx-users] Differences in the bonded potentials in 3.3.2 vs. 3.3.1

2007-11-16 Thread Yang Ye
submitting a bugzilla entry could be helpful in examining this case. On 11/17/2007 4:45 AM, Amadeu wrote: My student and I have been trying the latest Gromacs version (3.3.2) for the simulation of a CNT. We noticed that the bonded energies calculated with 3.3.2 are quite different compared to

Re: [gmx-users] make gives error in futil.c with mpi and ccc-6.5.6.002-1

2007-11-15 Thread Yang Ye
Find out the c preprocessor of the Compaq C compiler and try to obtain its output of parsed C source file. On 11/15/2007 10:12 AM, [EMAIL PROTECTED] wrote: I have had some success reproducing the event with a simple c program and the issue appears to be with the in-house mpicc wrapper script.

Re: [gmx-users] make gives error in futil.c with mpi and ccc-6.5.6.002-1

2007-11-15 Thread Yang Ye
ine, so you may go into the files to hard code the string values (e.g. GMXLIBDIR are present in tools/futil.c and kernel/topio.c) Regards, Yang Ye On 11/15/2007 6:59 AM, Chris Neale wrote: I am having difficulty installing the mpi version of gromacs 3.3.2 on a new computer. I have the same pro

Re: [Bulk] Re: [gmx-users] force=nan in frame 0

2007-11-12 Thread Yang Ye
You can send me the file off the list. To solve this kind of problem, start from simple case: two or a handful of atoms. Regards, Yang Ye On 11/13/2007 5:36 AM, Dongsheng Zhang wrote: Dear Yang Ye, Thank you very much for your reply. You are very helpful in my experience. I turned off the

Re: [gmx-users] force=nan in frame 0

2007-11-12 Thread Yang Ye
how do you turn off the interactions? e.g. setting rvdw=0 doesn't mean turning of vdw interactions. Regards, Yang Ye On 11/13/2007 12:55 AM, dongsheng zhang wrote: Dear Mark, The installation works for other systems. The error happens in either EM or MD. When I turn off all intera

Re: [gmx-users] How to set N-terminal lysine carry only +1 unit charge?

2007-11-09 Thread Yang Ye
ribe from the group */Yang Ye <[EMAIL PROTECTED]>/* wrote: it could not be possible since amber force field doesn't parameterized NLYN. alternative, use ACE/NME to cap the peptide. On 11/9/2007 7:36 PM, Hu Zhongqiao wrote: > > Hi, > > >

Re: [gmx-users] genernal problem in simulation

2007-11-09 Thread Yang Ye
this is a too general question. please read the wiki first. On 11/9/2007 9:58 PM, Kitty Ji wrote: > Dear users: > After we get some data from GMX simulation, how can we validate them? > I met many difficulties in parameters setting. > ___ > Kitty JI > Groupe

Re: [gmx-users] gmx 3.3.2 explodes with libc.so.6

2007-11-09 Thread Yang Ye
On 11/9/2007 9:21 PM, David van der Spoel wrote: Yang Ye wrote: On 11/9/2007 9:09 PM, David van der Spoel wrote: Yang Ye wrote: On 11/9/2007 6:47 PM, Bruce Milne wrote: Dear Li Qiang, it seems another guy get the same error(cannot pass gmxtest with rb1/acetonitrilRF) as me. and it sounds

Re: [gmx-users] Re: How to set N-terminal lysine carry only +1 unit charge?

2007-11-09 Thread Yang Ye
ACE for the N-termail and NME for the C-terminal. They are neutral. You can do so with aids from PyMol... Regards, Yang Ye On 11/9/2007 9:50 PM, Hu Zhongqiao wrote: Thanks, Yang Ye. You mean that I put an additional ACE or NME on the N-terminal lysine residue? zhongqiao Message: 3

Re: [gmx-users] gmx 3.3.2 explodes with libc.so.6

2007-11-09 Thread Yang Ye
On 11/9/2007 9:09 PM, David van der Spoel wrote: Yang Ye wrote: On 11/9/2007 6:47 PM, Bruce Milne wrote: Dear Li Qiang, it seems another guy get the same error(cannot pass gmxtest with rb1/acetonitrilRF) as me. and it sounds like the compatible problem between GROMACS 3.3.2 and and UBUNTU

Re: [gmx-users] gmx 3.3.2 explodes with libc.so.6

2007-11-09 Thread Yang Ye
about their failure pattern when reporting. The fix of acetonitrilRF is available in the CVS. Even you don't apply, it won't affect if you are using parallel and you are not using RF. Regards, Yang Ye On 11/9/2007 7:49 PM, Li Qiang wrote: I see. thanks for the information. but

Re: [gmx-users] gmx 3.3.2 explodes with libc.so.6

2007-11-09 Thread Yang Ye
found that it was due to one line in mshift.c "srenew(g->edge[0],n); " mdrun output: realloc for g->edge[0] (24 bytes, file mshift.c, line 251, g->edge[0]=0x0x 1) Regards, Yang Ye Cheers, Bruce ___ gmx-users m

Re: [gmx-users] How to set N-terminal lysine carry only +1 unit charge?

2007-11-09 Thread Yang Ye
it could not be possible since amber force field doesn't parameterized NLYN. alternative, use ACE/NME to cap the peptide. On 11/9/2007 7:36 PM, Hu Zhongqiao wrote: Hi, I am using amber force field in Gromacs. The protein I simulated is the lysozyme (PDBID: 1HEL). I want to set all lysine

Re: [gmx-users] gmx 3.3.2 explodes with libc.so.6

2007-11-08 Thread Yang Ye
Regarding the failed test for simple/rb1, I used dmalloc and the message is realloc for g->edge[0] (24 bytes, file mshift.c, line 251, g->edge[0]=0x0x 1) the line in mshift.c is srenew(g->edge[0],n); Regards,. Yang Ye On 11/9/2007 1:35 AM, David van der Spoel wrote: Yang

Re: [gmx-users] gmx 3.3.2 explodes with libc.so.6

2007-11-08 Thread Yang Ye
3.3.1 --- Program mdrun, VERSION 3.3.2 Source code file: network.c, line: 437 Routine should not have been called: gmx_sumi --- Perhaps gmx-developer is a better place for this thread. Regards, Yang Ye

Re: [gmx-users] can not pass gmxtest

2007-11-07 Thread Yang Ye
file GMXRC.bash in the locations which you can find in "make install". Run it with source /path/to/GMXRC.bash Then you can make sure that you are using your own version. Put that line "source ..." into ~/.bashrc shall make it default for every login session. Regards,

Re: [gmx-users] can not pass gmxtest

2007-11-07 Thread Yang Ye
Hi, You shall always try to build gromacs yourself. What's the error with tutorial? Regards, Yang Ye On 11/7/2007 10:14 AM, Li Qiang wrote: hi all, I newly installed GROMACS on UBUNTU 7.10 from Synaptic Package Manager(SPM). However, it can not pass the gamxtest with log as below

Re: [gmx-users] Help: A ligand covalently bond to protein

2007-11-06 Thread Yang Ye
between ligand and protein, how about other propery of covalent bond? Maybe I missed something of your message. Yours Tanping --- Yang Ye <[EMAIL PROTECTED]> wrote: you might want to try distance constraint. On 11/7/2007 5:11 AM, Tanping Li wrote: Dear all, I searched the maillin

Re: [gmx-users] Help: A ligand covalently bond to protein

2007-11-06 Thread Yang Ye
you might want to try distance constraint. On 11/7/2007 5:11 AM, Tanping Li wrote: Dear all, I searched the mailling list, and still can't find a way to set up my system: a ligand covalently bond to protein. I don't know if there is a easier way to do this. What I can think of is: 1) Add a b

Re: [gmx-users] Fatal error:Atom index (1) in settles out of bounds (1-0)

2007-11-04 Thread Yang Ye
Hi, To use GROMACS' spc topology with ffamber, you may create a new spc topology, e.g. spc-amber.itp. Following is its content. If you know C preprocessor, you can merge it with original spc.itp. [ moleculetype ] ; molname nrexcl SOL 2 [ atoms ] ; nr type resnr residue atom cg

Re: [gmx-users] entropy calaculted script??

2007-10-23 Thread Yang Ye
I doubt that no one could give you such script. To plot free energy surface, you can utilize Rg/Q or Rg/ContactNumber or dPCA (http://wiki.gromacs.org/index.php/Dihedral_PCA) analysis. Regards, Yang Ye - Original Message From: xi zhao <[EMAIL PROTECTED]> To: gmx-users@groma

Re: [gmx-users] Position restricted md

2007-10-23 Thread Yang Ye
Doing position-restrained simulation is useful to equilibrate solvent and ions. If you would like to study the dynamics of the peptide, PRMD doesn't help. PRMD is usually performed before production run for a duration from several hundred ps to 1ns. Regards, Yang Ye - Original Me

Re: [gmx-users] pdb2gmx error - version 3.3.1

2007-10-16 Thread Yang Ye
submit a bug report at bugzilla.gromacs.org? On 10/17/2007 2:40 AM, Justin A. Lemkul wrote: Hello all, I am having a strange error when using pdb2gmx. I am trying to generate the topology for a simple protein, using Gromos96 43a1. I am able to create the topology with version 3.3 without issu

Re: [gmx-users] pbc problem

2007-10-15 Thread Yang Ye
On 10/16/2007 2:31 AM, tangxuan wrote: Dear all, If pbc is full or xyz in mdp file, do i need to use the "trjconv -pbc nojump" to remove the jump when the protein is separate in the box after simulation and I want to calculate the rmsd of the protein? IT is not necessary to use trjconv -pbc be

Re: [gmx-users] the comm_mode

2007-10-14 Thread Yang Ye
with explicit solvent. Regards, Yang Ye On 10/15/2007 12:24 AM, OZGE ENGIN wrote: Sorry, but I have to ask some more questions. I have just started to perform simulations in vacuum. I can understand not using of PME in vacuum simulations; however, I can not understand the sentence you

Re: [gmx-users] Tool for visualizing disulphide bonds

2007-10-14 Thread Yang Ye
Program like VMD can draw extra bond. You need to get its manual and code a line or two in TCL. Regards, Yang Ye On 10/14/2007 11:38 PM, van Bemmelen wrote: Hi Ozge, I'm not sure what you mean by "visualization". But what about using VMD for trajectory visualization

Re: Re: [gmx-users] the comm_mode

2007-10-14 Thread Yang Ye
y done without PBC, Rotation is recommended. >> COM velocity removal's effect is directly visible, so if "Linear" works for >> you, you may use it. Thanks in advance Ozge -Original Message- From: Yang Ye <[EMAIL PROTECTED]> To: Discussion list for GROMAC

Re: [gmx-users] the comm_mode

2007-10-14 Thread Yang Ye
in the beginning of your simulation for a few ns. Regards, Yang Ye - Original Message From: Dechang Li <[EMAIL PROTECTED]> To: gmx-users Sent: Sunday, October 14, 2007 5:34:35 PM Subject: [gmx-users] the comm_mode Dear all, There are three options of comm_mode:

Re: [gmx-users] running gromacs in parallel, and with nice levels

2007-10-08 Thread Yang Ye
On 10/4/2007 11:50 PM, maria goranovic wrote: Dear All, - So I "think" I succeeded in running gromacs on a 4-core node. How does one confirm this without looking at the speed. i.e, where is it mentioned in the log file what the number of processors is ? I do get 4 different log files for 4 pr

Re: [gmx-users] How to calculate the average distance or energy between two residues?

2007-10-07 Thread Yang Ye
Hi, For average distance, you can gather distance v. time by g_mindist, then average them. For "average energy", you are refering to interaction energy? What you can do is to define two energy groups for two residues separatedly, make a new tpr and use mdrun rerun to get it. Reg

Re: [gmx-users] Nucleic Acid Simulations with Gromacs

2007-10-02 Thread Yang Ye
gy of small molecules in OPLS format but except this, don't use for serious business. Regards, Yang Ye On 10/2/2007 6:58 PM, [EMAIL PROTECTED] wrote: Hi, On the gromacs webpage in user contributions->topologies you have (at least) 2 forcefields do download that allow you to simulate N

Re: [gmx-users] Nucleic Acid Simulations with Gromacs

2007-10-02 Thread Yang Ye
the amber port from eric j sorin. On 10/2/2007 6:44 PM, Monika Sharma wrote: Dear All, I want to start nucleic acid simulations. I am using gromacs3.3.1. But I could not find any mention of Nucleic Acids in any of the force-field provided by gromacs distro. So does it mean that one _can not_

Re: [gmx-users] ANTECHAMBER & GAFF

2007-09-29 Thread Yang Ye
to GROMACS. The amb2gmx.pl from E.J. Sorin shall help (http://chemistry.csulb.edu/ffamber/tools.html). Regards, Yang Ye On 9/29/2007 10:22 PM, Dechang Li wrote: > Dear gmx-users, > I want to use ANTECHAMBER & GAFF to generate the topology of a small > molecular(HIV-1 Protease inh

Re: [gmx-users] Gromacs for Aerosol Particle Agglomeration

2007-09-29 Thread Yang Ye
On 9/29/2007 9:13 PM, Lorenzo Isella wrote: Dear All, I am 100% new on this list and to Molecular Dynamics in general. This is what I am interested into (and would like to know if Gromacs is then the right tool). I am not really into biology or chemistry, but rather in aerosol science. I am inter

Re: [gmx-users] Recompile GROMACS

2007-09-26 Thread Yang Ye
make shall automatically recognize the newly modified file and you just need to type make. If it says nothing to do, you just need to delete the file.o of your modified source file and then type make. Anyway, make clean && make will do so. Also, if you are changing tool part, then you just need

Re: [gmx-users] Using GROMACS to do colloid simulations

2007-09-25 Thread Yang Ye
Perhaps you shall look Espresso (http://www.espresso.mpg.de/) for coarse-grain simulation. Espresso saved my PhD thesis after spending more than one year's time in engaging GROMACS to do what I desired. Because of the size of the colloid simulation system, the expensive PME calculation will dr

Re: [gmx-users] Pbc and Com in simulation video

2007-09-25 Thread Yang Ye
shall you try -fit progress? On 9/25/2007 11:03 PM, [EMAIL PROTECTED] wrote: Hello gmx-users! I am trying to make a simulation video in which a water droplet is rolling or sliding on a surface. Due to a periodic boundary conditions a droplet is not whole all the time but it disappears from the

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