Re: [gmx-users] minimum number of atoms required.

2006-07-10 Thread Mark Abraham
> I am sorry. The particle does move if I give it an initial velocity myself > after setting comm-mode = None. However with gen_velocity = yes, It gives > the atom a velocity of zero. So it probably produces velocities such that the center of mass velocity is zero... this is something that a norma

Re: [gmx-users] minimum number of atoms required.

2006-07-10 Thread karamyog singh
I am sorry. The particle does move if I give it an initial velocity myself after setting comm-mode = None. However with gen_velocity = yes, It gives the atom a velocity of zero. thanks for your help. karamyog. ___ gmx-users mailing listgmx-users@gro

Re: [gmx-users] minimum number of atoms required.

2006-07-10 Thread karamyog singh
yes i have used gen_velocity = yes. when it did not work with this i gave the system a velcity of my own. It did not move even then. even after removing the restrictions oon center of mass motion, that is after setting comm-mode = None, the particle does not move. any idea why? - karamyog.On 7/10

Re: [gmx-users] minimum number of atoms required.

2006-07-09 Thread Mark Abraham
karamyog singh wrote: Dear users, I have a system with just one atom. I am using periodic boundary conditions. No matter what conditions I use, the atom doesnt seem to move. Are a minimum of 2 atoms required to do a simulation in Gromacs? If I have only one atom and I am using periodic boundary

Re: [gmx-users] minimum number of atoms required.

2006-07-09 Thread Yang Ye
have you used gen_vel=yes. Yang Ye karamyog singh wrote: Dear users, I have a system with just one atom. I am using periodic boundary conditions. No matter what conditions I use, the atom doesnt seem to move. Are a minimum of 2 atoms required to do a simulation in Gromacs? If I have only one

[gmx-users] minimum number of atoms required.

2006-07-09 Thread karamyog singh
Dear users, I have a system with just one atom. I am using periodic boundary conditions. No matter what conditions I use, the atom doesnt seem to move. Are a minimum of 2 atoms required to do a simulation in Gromacs? If I have only one atom and I am using periodic boundary conditions then whether I