Re: [gmx-users] Conjugate Gradient - Equations

2009-05-02 Thread Tsjerk Wassenaar
Hi Una, Maybe this answers your question? http://en.wikipedia.org/wiki/Conjugate_gradient_method Cheers, Tsjerk On Thu, Apr 30, 2009 at 5:00 PM, Una Bjarnadottir wrote: > Hi everyone, > > In the gromacs manual the equations regarding the conjugate gradient are not > shown. > > Is there anybod

[gmx-users] How to build a lipid bilayer in GROMACS?

2009-05-02 Thread Anirban Ghosh
Hi ALL, I have a protein pdb file. I want to put this protein molecule in a lipid bilayer using GROMACS. I shall be glad if anyone can kindly tell me how to build a lipid bilayer in GROMACS and how to embed the protein in it to get the final pdb of the entire system. Thanks a lot. Regards,

Re: [gmx-users] How to build a lipid bilayer in GROMACS?

2009-05-02 Thread Justin A. Lemkul
Anirban Ghosh wrote: Hi ALL, I have a protein pdb file. I want to put this protein molecule in a lipid bilayer using GROMACS. I shall be glad if anyone can kindly tell me how to build a lipid bilayer in GROMACS and how to embed the protein in it to get the final pdb of the entire system.

Re: [gmx-users] How to build a lipid bilayer in GROMACS?

2009-05-02 Thread Jack Shultz
I don't know if this helps you, but there is a membrane plugin for VMD which you can download for free. I've used this to insert proteins in membranes and then use namd to run MD. I don't know what steps are involved to make this structure compatible with GROMACS. http://www.ks.uiuc.edu/Research/v

[gmx-users] Reducing Size of Data

2009-05-02 Thread Jack Shultz
Hi, I am taking a look at reducing the size of my analysis. I've decreased log writing intervals. I notice mdruns generate these pdb files. Is there any way of reducing the frequency these files are written? I think that will go a long way to making my analysis easier. 05/02/2009 07:34 PM

Re: [gmx-users] Reducing Size of Data

2009-05-02 Thread Justin A. Lemkul
These step*.pdb are written when there is an instability in the system (i.e., on the verge of a crash). You can usually map them to instances in the .log file of LINCS warnings or "water molecule could not be settled" reports. -Justin Jack Shultz wrote: Hi, I am taking a look at reducing