[mesa-users] Running Speeds of MESA

[Robert Farmer]

Depends on the problem and the accuracy of the results you want.

If you increase varcontrol_target this will decrease the number of steps
you need to take to get to some evolutionary phase. Decreasing
mesh_delta_coeff decreases the spatial resolution (less zones) which should
make you use less ram and each step run quicker. You could also try using a
smaller nuclear network to make the steps quicker.

BUT, all these things will change your results, you'll need to test them to
see if they still make sense/ give answers sufficient for your application.
Maybe try a few runs with different resolutions to see what happens with
the speed and the final results.

Also just make sure that OMP_NUM_THREADS= the number of threads your pc has
(2x the number of cores)

Rob

On Sat, Oct 17, 2015 at 6:05 PM, Glasman, Noah B <NBG4 at pitt.edu> wrote:

> I am wondering if there is a way to speed up how fast MESA runs on my
> computer? At the moment it takes an hour plus to run it for a 1Msun star
> with Z = 0.001 and after an hour it's only at 6.349e9 years. Is there
> something I can do to speed up the program or maybe allocate how much ram
> it uses? At the pace it is going it is almost impractical to use for any
> research or classwork for my Astronomy class. I have a 2012 Macbook Pro 13
> inch, 4gb DDR3 RAM, 2.5 GHz Intel Core i5 cpu, with OSX 10.10.5. I am
> running MESA-r7624, with  Version 20150908 of the MESA-sdk.
>
>
>
> Sincerely,
>
> Noah Glasman
>
>
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