[gmx-users] RE: Temperature Fluctuations
Mark.Abraham at anu.edu.au
Thu Nov 18 00:06:25 CET 2010
On 18/11/2010 3:28 AM, Nimesh Jain wrote:
> I am doing Replica Exchange (RE) simulations with 8 replicas 10 degree
> apart. My system has implicit solvent and there is only one molecule
> in the system (around 270 atoms). I am using Nose-Hover thermostat and
> tabulated potentials.
> When I do simulations with exchange frequency of 1 ns, the system
> blows up and the temperature goes to a few 10,000K. When I remove RE,
> the temperature fluctuations are +/- 20 degrees and they increase with
> Does anyone know what the problem is ? Let me know if you need any
> other info about the system I am simulating.
If one of your simulations is not stable on its own, then you've not
equilibrated under your thermostat properly. What was your preparation
protocol and final .mdp?
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