Hi Ian,
I did the changes but it started and finished early. I am attaching
the qc0-mclachlan.err file. At the end there is a warning in one of
the Carpet files (mask_test.c)

Where can I find the puncture tracker?

Thanks,
Jose

On Fri, Jan 13, 2012 at 4:38 AM, Ian Hinder <ian.hinder@aei.mpg.de> wrote:

On 13 Jan 2012, at 12:32, Jose Fiestas Iquira wrote:

Yes, trajectories and wave forms would be enough for now. Which are

the names of this files? Many of the .asc files have data like kxx,

kxy, kxz, etc. Is there any description of them?

Not that I am aware of.  Files with extension .x.asc are 1D ascii output of grid functions from CarpetIOASCII.  kxy is the variable name for the x,y component of the extrinsic curvature tensor K.  The waveform file should be in mp_psi4_l2_m2_r*.asc where * corresponds to the radius of the extraction sphere.  However, looking at the qc0-mclachlan.par file, I see that there is no wave extraction switched on.  You should be able to enable wave extraction by adding something like the following to the parameter file:

ActiveThorns = "WeylScal4 CarpetInterp AEILocalInterp Multipole"

Multipole::nradii    = 3

Multipole::radius[0] = 30

Multipole::radius[1] = 40

Multipole::radius[2] = 50

Multipole::variables = "WeylScal4::Psi4r{sw=-2 cmplx=’WeylScal4::Psi4i’}"

Multipole::l_max     = 4

WeylScal4::fdOrder   = 4

(I haven't tested this, so let me know if it doesn't work)

I've just found that the usual PunctureTracker thorn is not enabled in this example parameter file.  So to look at trajectories you will have to use the apparent horizon centroids.  These are in the files BH_diagnostics.ah*.gp.  The meanings of the columns are at the top of the files.  You want the centroid x and y columns to plot in GnuPlot.

Thanks,

Jose

On Fri, Jan 13, 2012 at 12:41 AM, Ian Hinder <ian.hinder@aei.mpg.de> wrote:

On 12 Jan 2012, at 23:46, Jose Fiestas Iquira wrote:

Dear all,

I run the tutorial and found other interesting examples like the

McLachlan tool for Binary Black Holes.

Regarding the McLachlan tool,

Could somebody help me finding a description of the output? Is all

contained in the .asc files? I would like to visualize it.

Hi Jose,

What sort of output do you want to visualise?  Cactus thorns typically

output "lightweight" information such as BH trajectories and waveforms as

ASCII, and more heavyweight data -- like gridfunctions -- as HDF5.  For the

trajectories (from thorn Puncture Tracker) and waveforms (from Multipole)

you can use gnuplot or anything that can read standard ASCII output to

visualise them.  For gridfunctions in HDF5 format, I think the easiest way

to get started is to use VisIt, for which there is a Carpet plugin (though

installing VisIt is sometimes not so easy!).

Does anyone know if the Carpet plugin is distributed with VisIt yet?  I

believe that was the intention.

Cheers,

Jose

On Wed, Jan 11, 2012 at 7:06 PM, Jose Fiestas Iquira <jafiestas@lbl.gov>

wrote:

Thanks to Erik for advise. ETK example simulation run successfully.

On Wed, Jan 11, 2012 at 11:49 AM, Jose Fiestas Iquira <jafiestas@lbl.gov>

wrote:

Right, it looks good now:

./simfactory/bin/sim list-simulations

  static_tov              [ACTIVE (RUNNING), restart 0000, job id 595490]

Let see how it looks when it finishes. The example was set to 8 hours.

Thanks,

Jose

On Wed, Jan 11, 2012 at 11:45 AM, Erik Schnetter <schnetter@cct.lsu.edu>

wrote:

On Wed, Jan 11, 2012 at 2:42 PM, Jose Fiestas Iquira <jafiestas@lbl.gov>

wrote:

The only thing is that now

$ ./simfactory/bin/sim list-simulations

returns

Error: unknown command list-simulation

Aborting Simfactory.

Did you really type "list-simulations", and the error message says

"list-simulation" (without the final "s")?

-erik

--

Erik Schnetter <schnetter@cct.lsu.edu>   http://www.cct.lsu.edu/~eschnett/

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<qc0-mclachlan.err>