Hello Roland, I did run the parameter file you gave on my local machine and kraken and both simulations fail at exactly the same time step ( t = 52.320 ) due to the following error: WARNING level 1 in thorn GRHydro processor 0 host bns (line 2004 of GRHydro_Con2Prim.F90): -> Con2Prim failed; stopping the code. WARNING level 1 in thorn GRHydro processor 0 host bns (line 2005 of GRHydro_Con2Prim.F90): -> Even with mesh refinement, this point is not restricted from a finer level, so this is really an error

WARNING level 1 in thorn GRHydro processor 0 host bns (line 2007 of GRHydro_Con2Prim.F90): -> on carpet reflevel: 4 WARNING level 1 in thorn GRHydro processor 0 host bns (line 2010 of GRHydro_Con2Prim.F90): -> xyz location: 3.400000 2.800000 2.400000 WARNING level 1 in thorn GRHydro processor 0 host bns (line 2012 of GRHydro_Con2Prim.F90): -> radius: 5.015974 WARNING level 0 in thorn GRHydro processor 0 host bns (line 2015 of GRHydro_Con2Prim.F90): -> velocities: NaN NaN NaN WARNING level 0 in thorn GRHydro processor 0 host bns (line 2015 of GRHydro_Con2Prim.F90): -> velocities: NaN NaN NaN

Any suggestions? Thank you. On Thu, Oct 18, 2012 at 1:20 PM, users-request@einsteintoolkit.org wrote:

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Today's Topics:

1. Re: tov collapse (Roland Haas)

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Message: 1 Date: Thu, 18 Oct 2012 10:20:19 -0700 From: Roland Haas roland.haas@physics.gatech.edu Subject: Re: [Users] tov collapse To: users@einsteintoolkit.org Message-ID: 50803A53.5040009@mail.gatech.edu Content-Type: text/plain; charset="iso-8859-1"

Hello Peter,

...

I'd like to test TOV collapse and I'm using the parameter file from the

ET

...

paper 2011 (tov_collapse_vc_l3.par). There are couple of thorns missing like Corecollapsecontrol and CartesianCoordinates? Could you please

provide

...

this thorns? Also I was wondering if that parameter file will work with ET_2012_05 release since this parameter file was tested on previous

version? The missing thorn is CoreCollapseControl (if it still complains about Coordinates then please just remove the thorn, it is not actually used). The thorn is Christian Ott's helper thorn to control grid setup etc during a core collapse. Christian has already said that he is fine with making the thorn public, it would however require some cleanup.

Since you are not the first to try this parfile and fail (and since I am the person responsible for publishing the parfile), would you mind giving the attached one a try please? It replaces CoreCollapseControl with AEIThorns/Trigger.

I also attach a an amended thorn list to pull in the thorn. Steps are:

cd Cactus bin/GetComponents -a --root . --thornlist einsteintoolkitAndTrigger.th simfactory/bin/sim build --reconfig --thornlist einsteintoolkitAndTrigger.th

Please see the recent thread with Chris Evans http://lists.einsteintoolkit.org/pipermail/users/2012-October/002591.htmlon this mailing list as well (and Vasilios Mewes http://lists.einsteintoolkit.org/pipermail/users/2012-July/002364.html some time ago).

Please note that the parfile apparently leads to GRHydro NaN errors eventually (it always did but only after black hole formation, I am not sure when it happens right now).

I theory the parameter file should work with newer versions. I am trying it right now with the Lovelace release (2012_05) and will get back to you (and Chris) once I am done. Feel free to give it at try as well though.

Yours, Roland

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