<div dir="ltr">That's great, thank you very much, Roland.<div><br></div><div>Cheers.</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">El mar, 4 may 2021 a las 11:17, Roland Haas (<<a href="mailto:rhaas@illinois.edu">rhaas@illinois.edu</a>>) escribió:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">Hello Luciano,<br>
<br>
> I'm a relatively new user of the toolkit; I've been mainly using GRHydro<br>
> and I'd like to start using it with LLAMA. I played a bit with the<br>
> multipatch gallery example but I have a few questions:<br>
> <br>
> 1) Is there a public parfile for a simple TOV or any GRHydro implementation<br>
> using LLAMA (or someone I could ask about it)?<br>
Not sure about fully public, but you are free to use the attached one<br>
that was used in <br>
<br>
<a href="https://arxiv.org/abs/1212.1191" rel="noreferrer" target="_blank">https://arxiv.org/abs/1212.1191</a><br>
<br>
though it uses CTGamma rather than McLachlan so will require some<br>
adaptation (or you can use CTGamma which is available in the Llama<br>
repo). It also uses some private thorns (CCCGlobalModes and<br>
Psiclops, WaveExtractL) which you can either remove or use eg<br>
Hydro_Analysis for CCCGlobalModes, and WeylScal and Multipole the way<br>
the GW150914 example does for the waves.<br>
<br>
Note: there is nothing really that needs to be done use GRhydro with<br>
Llama, other than setting up the grid, ie it needs no extra parameters<br>
so a Llama parfile could be constructed by merging the gallery bns<br>
example with the gallery GW150914 example (at reduced finite difference<br>
order since order 8 is overkill for a hydro run).<br>
<br>
You may also take a look at the Parma group's collection of data and<br>
files (some digging in the website required) starting from here:<br>
<br>
<a href="https://docs.einsteintoolkit.org/et-docs/Additional_resources" rel="noreferrer" target="_blank">https://docs.einsteintoolkit.org/et-docs/Additional_resources</a><br>
<br>
though there is no Llama files I think.<br>
<br>
Note that due to the way NSTracker works, the parfile will only work<br>
with equal mass bns systems. For unqual ones the WVUThorns_Analysis has<br>
thorns that can track each bns separately (those thorns won't work with<br>
symmetry enabled but should work with Llama as long as the NS are only<br>
on the Cartesian grid).<br>
<br>
> 2) Reading the mailing list I found that there was an issue with the GW<br>
> propagation caused by refinement boundaries (<br>
> <a href="https://urldefense.com/v3/__http://lists.einsteintoolkit.org/pipermail/users/2017-March/005411.html__;!!DZ3fjg!q8UZ3uoTcF5BGa-3mdV_BF1Sdv9tQjnP3RipvVq7Mt4xIi_Kc32UI63Ga10flgmj$" rel="noreferrer" target="_blank">https://urldefense.com/v3/__http://lists.einsteintoolkit.org/pipermail/users/2017-March/005411.html__;!!DZ3fjg!q8UZ3uoTcF5BGa-3mdV_BF1Sdv9tQjnP3RipvVq7Mt4xIi_Kc32UI63Ga10flgmj$</a> ).<br>
<br>
I would say those still exist, though there is a possibility that<br>
changes due to <br>
<br>
<a href="https://bitbucket.org/einsteintoolkit/tickets/issues/2398/multipole-default-midpoint-integration" rel="noreferrer" target="_blank">https://bitbucket.org/einsteintoolkit/tickets/issues/2398/multipole-default-midpoint-integration</a><br>
<br>
have changed behaviour a bit.<br>
<br>
> Do you know if this is still an issue?<br>
<br>
I would not say "know", but my guess would be "yes, still an issue to<br>
the extend reported by Christian".<br>
<br>
> If I get to use it, I'd be happy to contribute in some way, if there's room<br>
> and interest for that.<br>
If you can make the parfile simpler and eg baesd on the bns gallery<br>
example and were to contribute it back, than would be very nice to have.<br>
<br>
Yours,<br>
Roland<br>
<br>
-- <br>
My email is as private as my paper mail. I therefore support encrypting<br>
and signing email messages. Get my PGP key from <a href="http://pgp.mit.edu" rel="noreferrer" target="_blank">http://pgp.mit.edu</a> .<br>
</blockquote></div><br clear="all"><div><br></div>-- <br><div dir="ltr" class="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><font face="trebuchet ms, sans-serif"><b>Luc Combi</b></font></div><div dir="ltr"><div style="font-family:sans-serif"><div style="color:rgb(117,117,117)">Instituto Argentino de Radioastronomía </div><div style="color:rgb(117,117,117)">CONICET, Buenos Aires, Argentina</div><div style="color:rgb(117,117,117)"><a href="http://sites.google.com/view/lucianocombi" target="_blank">web page.</a><br></div></div><div style="color:rgb(33,33,33);font-family:sans-serif"><br><br></div></div></div></div></div></div></div></div></div></div></div></div>