Re: [gmx-users] velocity-verlet giving nans

2013-07-20 Thread Elton Carvalho
On Fri, Jun 7, 2013 at 11:52 AM, Mark Abraham wrote: > If you want to suggest fixing any possible problem, please file an issue at > redmine.gromacs.org > There is already a report in redmine with a suggestion on how to deal with NaNs: http://redmine.gromacs.org/issues/941 On Thu, Jun 6, 2013 a

Re: [gmx-users] velocity-verlet giving nans

2013-06-07 Thread Mark Abraham
Don't know, but re-interpreting the old velocities at a new time might not be fully integrated with things calculated from the old velocities, such as temperature-coupling quantities. For switching integrators, you will need to re-equilibrate, so you may as well generate new velocities and avoid th

[gmx-users] velocity-verlet giving nans

2013-06-05 Thread Sikandar Mashayak
Hi I first performed a simulation using leap-frog integrator, which went well and got the expected results. For post-processing I want velocities at full time step, but, as per my understanding, leap-frog computes and writes velocities at half-time step. Therefore, I just changed integrator from '