Re: [gmx-users] Treating solute as a rigid body with flexible solvent molecules

2012-05-10 Thread Mark Abraham
On 10/05/2012 7:29 PM, Debayan Chakraborty wrote: Dear Gromacs Users, I want to simulate an organic dye in a solvent ( such as aniline as DMA). I have already relaxed the solvent around the dye in the equilibration run ( NPT) using position restraints on the

Re: [gmx-users] Free energy calculation about ions (hope Justin A. Lemkul can give some suggestions )

2012-05-10 Thread Justin A. Lemkul
On 5/9/12 10:37 PM, DeChang Li wrote: Dear all, I want to calculate the ion solvation free energy (e.g. an ion Na+ solvated in a water box) using Bennett Acceptance Ratio (BAR) method, following the tutorial by Justin A. Lemkul. However, if I turn off the Coulombic interaction, the

[gmx-users] Re: gmx-users Digest, Vol 97, Issue 69

2012-05-10 Thread farideh zergani
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Re: [gmx-users] keep the nanotube cylindrical.

2012-05-10 Thread Elton Carvalho
On Sat, May 5, 2012 at 7:27 PM, Za Pour za.p...@yahoo.com wrote: Dear gmx users I am simulation a system including carbon nanotube+water.I have done these things: However as I looked into the nvt.gro I realized that the cylindrical shape of carbon nanotube  has been changed.I am not sure

[gmx-users] poor performance in Hemiltonian Replica Exchange

2012-05-10 Thread francesco oteri
Dear gromacs users, I performed a Hemiltonian Replica Exchange (i.e. replica exchange where each replica has a init_lambda=0, delta_lambda=0 and init_lambda ranging uniformely from 0 to 1). Since I have only ten fixed discrete lambda, I run a Temperature Replica Exchange where, for each replica

Re: [gmx-users] poor performance in Hemiltonian Replica Exchange

2012-05-10 Thread Michael Shirts
4.6 will include Hamiltonian replia exchange functionality built into the MPI version. Currently the description of the error is very vague -- if you can write up what exactly the numbers are, and what they should be, with files that exactly replicate the error, then I can take a look. But