Re: [gmx-users] Re: question about g_rdf -com & a little mistake on make_ndx

2006-09-15 Thread David van der Spoel
Qiao Baofu wrote: Hi, I am using Gromacs 3.3.1. In the help file of make_ndx, it is said that "splitres" is to split group into residues, and "splitat" is to split group into atoms. But after I use them two, I found they are opsite. see the following example > splitres 3 Splitting group 3

[gmx-users] binding free energy calculations on charged ligands

2006-09-15 Thread Diane Fournier
Hello all,   I'm still trying to get the binding free energy for my ligands, and I now think I will have to do another simulation, since my first one used PME and I didn't record velocities in my trajectory.   But first I need some advice, since I can't find a paper which describes unambiguously

[gmx-users] Re: question about g_rdf -com & a little mistake on make_ndx

2006-09-15 Thread Qiao Baofu
Hi,I am using Gromacs 3.3.1. In the help file of make_ndx, it is said that  "splitres" is to split group into residues, and "splitat" is to split group into atoms. But after I use them two, I found they are opsite. see the following example> splitres 3Splitting group 3 'MIL' into atoms> splitat 3Sp

RE: [gmx-users] The right way of killing Gromacs

2006-09-15 Thread Berk Hess
From: kobi <[EMAIL PROTECTED]> Reply-To: Discussion list for GROMACS users To: Discussion list for GROMACS users Subject: [gmx-users] The right way of killing Gromacs Date: Fri, 15 Sep 2006 11:33:27 +0200 Hello, the runtime of our cluster is unfortunately limited. Before mdrun is terminat

Re: [gmx-users] The right way of killing Gromacs

2006-09-15 Thread Erik Lindahl
Hi, mdrun finishes on the next step when receiving TERM, and on the next multiple of nstxout when receiving USR1. On some systems, the USR1/SIGHUP is only sent to the parent MPI program, not the actual mdrun process, and then there isn't much we can do. In your case, try altering the si

[gmx-users] Re: Why RMSFs of some protein chains in my system are unreasonably large?

2006-09-15 Thread Hu Zhongqiao
> are all the lysozymes treated as one protein? in that case it might be a PBC artifact. try doing the rmsf per molecule (by running the program 16> times) and then overlaying the result.   > are you trying to crystallize it?   >David.   Thank David. I just found that it was due to jumps i

Re: [gmx-users] Fatal error: Force field inconsistency

2006-09-15 Thread svb1
Quoting [EMAIL PROTECTED]: > > > Hello, > I had this error while trying to run a simulation for a small molecule > without > water and bilayer, I have included in the topol.top its parameters taken from > OPLS and its topology, since I did not created the topology with the pdb2gmx > I > did not i

[gmx-users] The right way of killing Gromacs

2006-09-15 Thread kobi
Hello, the runtime of our cluster is unfortunately limited. Before mdrun is terminated a USR1 signal is send, but this doesn't cause mdrun to writeout the current frame. Therefore most of the trajectory is lost. I'd like to write a skrip which converts the USR1 sinal to some other signal. The q

RE: [gmx-users] Surface Tension Calculation

2006-09-15 Thread svb1
write g_energy 6 0 enter the number 6 is just the corresponding to the surface tension, it can be any one. Quoting "Dallas B. Warren" <[EMAIL PROTECTED]>: > > I posted a question a few days ago regarding the > > calculation of the surface tension of a lipid bilayer in > > Gromacs. The respon

[gmx-users] MPI version on parallelknoppix live CD

2006-09-15 Thread Michael Creel
Hi gromacs users. The there's a new release of the parallelknoppix live CD out that has a single precision, mpi-enabled version of gromacs installed. You can use this CD to set up a cluster and be running gromacs with MPI in about 10 minutes. The gmxdemo/demo file has been modified to allow you to