[Mesa-users] Strange error when running a MESA model (NaN values)

[Warrick Ball]

Hi,

I just copied your files to a new star/work folder and get the error

     failed to open z0014_y0266_ekstrom_30.data
     failed to open /home/wball/mesa/9575/data/star_data/zams_models/z0014_y0266_ekstrom_30.data
     failed in get_zams_model
     star_load_zams ierr           2
     do_load1_star ierr           2
     before_evolve_loop ierr           2

I presume that you're using your own set of ZAMS models, stored in the 
missing file. That's fine but we can't reproduce your run without them.

Also, I see that your `run_star_extras.f` provides an extra wind routine. 
That's important but you didn't mention it in your original message.  I 
would first suggest making sure that your problem is not being caused by 
your extra code in `run_star_extras.f`.  If it is, then I further suggest 
trying to reduce your `run_star_extras.f` to the minimum that reproduces 
the problem.  That will make it much easier for us to help you.

The same is true of the inlists: the fewer non-default settings we have to 
look at to find potential problems, the easier it is, so try to distil the 
problem as best you can.

Cheers,
Warrick


------------
Warrick Ball
Postdoc, School of Physics and Astronomy
University of Birmingham, Edgbaston, Birmingham B15 2TT
W.H.Ball at bham.ac.uk
+44 (0)121 414 4552


On Fri, 19 Oct 2018, mesa-users at lists.mesastar.org wrote:

> I'm sorry! I've forgotten to attach the inlist_massive_defaults file, which contains the atmosphere setup.
> 
> Thanks, I'll try with the simple_photosphere option.
> 
> Em qui, 18 de out de 2018 às 20:00, Aaron Dotter <aaron.dotter at gmail.com> escreveu:
>       Hi Matheus,
> I'm confused by your inlists and your terminal output.  The latter says you're using the Eddington_grey atmostphere boundary condition but this doesn't seem to be set in the inlists.  Do you know 
> 
> Anyway, the error message in the terminal says that the Eddington_grey atmosphere T-tau integration has failed.  You might have better luck using the simple_photosphere from the start.
> 
> The atmosphere boundary condition is set in the &controls inlist.  http://mesa.sourceforge.net/controls_defaults.html#which_atm_option
> 
> Cheers,
> Aaron
> 
> On Thu, Oct 18, 2018 at 6:54 PM Matheus Bernini via Mesa-users <mesa-users at lists.mesastar.org> wrote:
>       Hello everyone,
> I'm an undergraduate student, I'm studying the evolution of massive stars and I'm using r-9575.
> 
> I was running a model (32Msun) testing different (exponential)overshooting values and after some time the  running stopped and it was showed me this error. What this error means? I couldn't find
> anything about this error on the website.
> 
> image.png
> 
> Thanks :)
> -----------------------------------------------------------------
> Matheus Bernini Peron
> Undergraduate student
> Observatório do Valongo,
> Universidade Federal do Rio de Janeiro
> Ladeira do Pedro Antônio, 43 - Saúde
> Rio de Janeiro - RJ - CEP 20080-090
> Brasil
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>