[Mesa-users] network memory requirements

[Francis Timmes]

… and in slightly more detail … 

https://lists.mesastar.org/pipermail/mesa-users/2016-August/006859.html

fxt



> On Nov 13, 2018, at 2:33 PM, Rob Farmer <r.j.farmer at uva.nl> wrote:
> 
> 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
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> 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
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