[Users] Help with GW150914 Black Hole simulation

[Enzo Iubini]

Thank you Zach for your reply, that clears it up.

I have one more question then. Since I was not able to run the code in my
laptop, I tried downloading the datafiles from the following site.

https://zenodo.org/record/155394

I run into the following problem. When following the tutorial example in '
https://docs.einsteintoolkit.org/et-docs/GW150914_VisIt_Tutorial ' on the
section "A visualization example", it shows a long folder of
surface01_00xxxxx.vtk datafiles, all of which are different time steps for
the black hole horizons. But when looking at the downloaded file, I cannot
seem to find all these .vtk files. Instead I only find one .vtk file, and
therefore am unable to run the complete simulation. Does anyone understand
what's going on?

Thank you so much for your help.
Best regards,
Enzo

El lun, 9 oct 2023 a las 13:23, Zach Etienne (<zachetie at gmail.com>)
escribió:

> Hi Enzo,
>
> As the website warns: "Note that the simulation requires about 82 GB of
> RAM, *so most likely you will need to use a cluster.*" As for the error,
> MPI is probably seeing only one node (your laptop) so requesting 16 is
> throwing an error.
>
> -Zach
>
> *     *     *
> Zachariah Etienne
> Assoc. Prof. of Physics, U. of Idaho
> Adjunct Assoc. Prof. of Physics & Astronomy, West Virginia U.
> https://etienneresearch.com
> https://blackholesathome.net
>
>
> On Mon, Oct 9, 2023 at 7:18 AM Enzo Iubini <egic.enzo at gmail.com> wrote:
>
>> Greetings to all.
>>
>> I've been having some problems running the GW150914 simulation. When
>> following the tutorial on "
>> https://einsteintoolkit.org/gallery/bbh/cr.html " , I run into problems
>> when running the parfile, specifically when running
>>
>> simfactory/bin/sim create-submit GW150914_28 --define N 28 --parfile par/GW150914/GW150914.rpar --procs 128 --walltime 24:00:00
>>
>>
>> This leads to the error
>>
>> Parameter file: /home/enzo/Cactus/par/GW150914/GW150914.rpar
>> Skeleton Created
>> Job directory: "/home/enzo/simulations/GW150914_28"
>> Executable: "/home/enzo/Cactus/exe/cactus_sim"
>> Option list: "/home/enzo/simulations/GW150914_28/SIMFACTORY/cfg/OptionList"
>> Submit script: "/home/enzo/simulations/GW150914_28/SIMFACTORY/run/SubmitScript"
>> Run script: "/home/enzo/simulations/GW150914_28/SIMFACTORY/run/RunScript"
>> Parameter file: "/home/enzo/simulations/GW150914_28/SIMFACTORY/par/GW150914.rpar"
>> Assigned restart id: 0
>>
>> Error: Too many nodes specified: nodes=16 (maxnodes is 1)
>> Aborting Simfactory.
>>
>>
>> I am inclined to believe this is because I am running it on my own
>> laptop, but I would nonetheless like to know exactly what does that error
>> mean and if I can fix it somehow.
>>
>> I would really appreciate your help, thank you :)
>>
>> Best regards,
>> Enzo
>> _______________________________________________
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>> Users at einsteintoolkit.org
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>>
>
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