[mesa-users] Timestep control

Dean Townsley Dean.M.Townsley at ua.edu
Wed Aug 27 12:30:28 EDT 2014

Hi Warrick,

On 08/27/2014 01:37 AM, Warrick Ball wrote:
> Are there already hooks for the maximum timestep?  Or is it enough 
> simply to add something like
>   s% dt = min(dt, my_dt_limit)
> to extras_check_model in run_star_extras?

I think you should probably do it in extras_finish_step() instead, and 
it is s% dt_next.  This is what we have done to control the timestep for 
accreting WD setups.

I think s%dt is the either the timestep currently being attempted (when 
extras_check_model() is called) or the timestep just finished (when 
extras_finish_step() is called).

There is also a string somewhere that indicates what is constraining the 
timestep and is printed in the summary info to the terminal, but I don't 
know what that is called.  That should probably be changed too, to 
something like "mylimit" or something more meaningful.


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