[Mesa-users] network memory requirements

[Rob Farmer]

Hi
The most relevant memory usage for large nets is the size of the matrix,
that is set in get_newton_work_sizes in star/private/star_newton.f90. Short
answer is the max memory mesa will us is ~16GB. You get this from looking
at the max size of lwork which is a signed 4-byte int and plug it into
get_newton_work_sizes you can infer the number of zones/ number of
isotopes, which gives you the 16Gb.  Depending on how many isotopes you
want ( >400) you may need to reduce the numerical spatial resolution.

Then you need a few extra Gb's on top for the eos/rates/other arrays.

Rob







On Tue, 13 Nov 2018 at 22:13, amber lauer via Mesa-users <
mesa-users at lists.mesastar.org> wrote:

> Can someone point me to the relevant resource to calculate the memory
> requirements for a given size network? I'm trying to get a sense of how to
> allocate resources on a cluster for models with a large net. Thanks.
>
> --
> Amber Lauer
> Postdoctoral Researcher
> Triangle Universities Nuclear Lab
> Duke University
> amber.lauer at tunl.duke.edu <amber.lauer at duke.edu>
> _______________________________________________
> mesa-users at lists.mesastar.org
> https://lists.mesastar.org/mailman/listinfo/mesa-users
>
>
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