[Mesa-users] How do you change timestep in MESA?

Francis Timmes fxt44 at mac.com
Sun Oct 4 14:52:12 EDT 2020

hi bea,

generally it means a model was unable to evolve despite trying tiny time steps.
decreasing the minimum time step is unlikely to be a solution, but not enough 
information is provided for anyone to potentially help.
best practice is to at least share the inlist(s) one is using.


> On Oct 4, 2020, at 9:01 AM, Bea Marie Cajandig via Mesa-users <mesa-users at lists.mesastar.org> wrote:
> Good day to all,
> I am running a simulation on a red dwarf star, and it is always terminated with this message:
> "stopping because of problems dt < min_timestep_limit
> terminated evolution: cannot find acceptable model
> termination code: min_timestep_limit"
> I would like to ask a few questions in regards to this:
> 1. What does this error mean?
> 2. Where is the timestep adjusted? Where do you add the timestep value: &star_job or &controls?
> Thank you in advance for helping me out. The help is very much appreciated. 
> Cheers,
> Bea
> _______________________________________________
> mesa-users at lists.mesastar.org
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