[Users] mass estimation of neutron star

[林家暉]

Dear Roland,

Thanks for your reply.

For the previous question about r-process, I found a document(https://stellarcollapse.org/media/micra2013/moesta.pdf) saying that GRHydro could consider neutrino leakage. But I have no ideal how to implement it. Is there any suggested way to deal with neutrino leakage with GRHydro (or other thorns) ?

Thank you.

Best regards,

Chia-Hui

________________________________
寄件者: Roland Haas <rhaas at illinois.edu>
寄件日期: 2018年10月2日 下午 09:11:21
收件者: 林家暉
副本: Einstein Toolkit Users
主旨: Re: [Users] mass estimation of neutron star

Hello Chia-Hui,

> In addition , I would like to ask question about computation
> consumption. For the BNS merger (using .par file in the gallery
> file), it costs about 5000 core hours (48 cores for 100 hours) for
> the completed simulation (to iteration=15000). Is it reasonable? And
> is there some way to save the computational resources ?
If you want to save overall resources you could reduce the number of
cores used (assuming you do not run out of memory). For example running
on 32 cores will make it run slower but not by a factor of 48/32 so
that the total resources (number-of-cores * hours-used) goes down.

You could also try reducing (slightly!) the resolution eg by a factor
of 1.25 which would make the simulation cheaper (but also loose
significantly in accuracy). Finally you could try and make the
simulation domain smaller, which safes a bit but not a whole lot
usually.

You can also try and see if reducing the amount of output produced
makes any difference (though that is unlikely). This is the
outXXX_every parameters and generally everything with an _every in its
name.

Yours,
Roland

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