I am little confused by the Pdamp and Tdamp parameters in fix npt. The following statement is from the www site.
For example, a value of 100.0 means to relax the temperature in a timespan of (roughly) 100 time units (tau or fmsec or psec - see the units command).
I am using units real, so does that mean relaxation occurs at every 100fmsec?
My concern is following: by default the time step is 1fs for units real but in my simulations I use 0.1fs as timestep. Relaxation occurs still at every 100fs or at every 10fs? I figured it would say time steps or just steps, just wanted to make sure.