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<p>Dear Enzo,</p>
<p>CactusTutorial.ipynb shows you how to run simulations.</p>
<p>For example, to run interactively, it shows that you do this:</p>
<p>./simfactory/bin/sim create-run helloworld \<br>
--parfile
arrangements/CactusExamples/HelloWorld/par/HelloWorld.par</p>
<p>So create a simulation name, e.g. multipatch, and pass your
parfile.</p>
<p>--Steve<br>
</p>
<div class="moz-cite-prefix">On 3/9/2023 3:50 PM, Enzo Iubini wrote:<br>
</div>
<blockquote type="cite"
cite="mid:CALW_x=4JxSk7mYrz9n8PT4KpU=4aYvPUamryW50e=wq48CfT8w@mail.gmail.com">
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<div dir="ltr">Hello Steve, I'm sorry to bother but I forgot one
thing.
<div><br>
</div>
<div>I was told that I could learn about Einstein Toolkit by
running some done simulations and shifting parameters to see
how the code works. </div>
<div>I tried working with this Multipatch wave equation : <a
href="https://einsteintoolkit.org/gallery/multipatch/index.html"
moz-do-not-send="true" class="moz-txt-link-freetext">https://einsteintoolkit.org/gallery/multipatch/index.html</a></div>
<div><br>
</div>
<div>But I do not know how to run it. I see I have a parameter
file, but don't I need the ccl files as well? (the schedule,
init, boundary) How do I work with these?</div>
<div><br>
</div>
<div>This would help me so much, I hope you can help me out.</div>
<div><br>
</div>
<div>Best regards, </div>
<div>Enzo</div>
</div>
<br>
<div class="gmail_quote">
<div dir="ltr" class="gmail_attr">El jue, 9 mar 2023 a las
18:38, Enzo Iubini (<<a href="mailto:egic.enzo@gmail.com"
moz-do-not-send="true" class="moz-txt-link-freetext">egic.enzo@gmail.com</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">
<div dir="ltr">Hello Steve, thanks for your thoughtful
answer.
<div><br>
<div>Just for clarification, I just meant it was a black
box for me as I'm still trying to understand the basics.
:D</div>
<div><br>
</div>
<div>So I ran all the cells once more and they didn't show
anything different. If I could ask for a favour, could
you run all the cells and then send me that jupyter
notebook? I know the simulation will not run correctly
on my computer but I could see which warnings (or lack
thereof) arise when you run the code and maybe figure
out if something is wrong with my computer, or anything
similar.</div>
</div>
<div><br>
</div>
<div>I would appreciate it very much, I've got to learn the
Einstein Toolkit and I have no one here in Chile to help
me, but I'll try my best this year!</div>
<div><br>
</div>
<div>Thank you again, I'll wait for your answer.</div>
<div><br>
</div>
<div>Best regards, </div>
<div>Enzo</div>
<div><br>
</div>
<div><br>
</div>
</div>
<br>
<div class="gmail_quote">
<div dir="ltr" class="gmail_attr">El mié, 8 mar 2023 a las
17:59, Steven R. Brandt (<<a
href="mailto:sbrandt@cct.lsu.edu" target="_blank"
moz-do-not-send="true" class="moz-txt-link-freetext">sbrandt@cct.lsu.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">
<div>
<p><br>
</p>
<div>On 3/8/2023 2:13 PM, Enzo Iubini wrote:<br>
</div>
<blockquote type="cite">
<div dir="ltr">Thank you Steve!
<div><br>
</div>
<div>My problem is: the simulation gifs of the Wave
Equation and Heat Equation notebooks on the
tutorial folder are not showing correctly.</div>
</div>
</blockquote>
<p>So I just clicked through the heat equation notebook.
The cell that ends with:</p>
<p>## play animation<br>
from IPython.display import HTML<br>
HTML(anim.to_html5_video()) #playback option 1<br>
#HTML(anim.to_jshtml()) #playback option 2</p>
<p>Played an animation for me. Initially, there is a
spike at the center of the grid, and it evolves to
become flat. (It also printed a deprecation warning
about the "close_event" function, whatever that is).</p>
<p>Did you click through to this cell or did you stop at
the one before? Because the one before it just
displays a still image.</p>
<p>The WaveEquation also worked for me by just clicking
through the cells in order.<br>
</p>
<blockquote type="cite">
<div dir="ltr">
<div><br>
</div>
<div>I'm trying to understand how Cactus works, so I
ran every cell in the notebook while looking at
the Terminal and seeing how each file is created
and its contents. </div>
<div>The problem comes when I finally run the
simulations, which take a while. </div>
</div>
</blockquote>
This happens in seconds for me.<br>
<blockquote type="cite">
<div dir="ltr">
<div>So after the running is complete, there's this
section called "Extract data from hdf5 files".</div>
<div>The files exist, as I have previously checked,
but the time steps array is actually a [0,0] array
in the heat equation, and a very random array in
the wave equation. </div>
<div>In both cases, when plotting the simulations,
the solution does not change from the initial
condition.</div>
</div>
</blockquote>
Did you modify the cells from the original tutorial?
Because this all just worked for me.<br>
<blockquote type="cite">
<div dir="ltr">
<div><br>
</div>
<div>I tried to open the data files to see if I
could understand what was going on but I'm unable
to open these kind of files, and Cactus being a
black box leaves me helpless to see where the
mistake is coming from.</div>
</div>
</blockquote>
<p>So I disagree that Cactus is a black box since it is
open source and the purpose of these tutorials is to
show how it works... but it's a very big non-black box
which can be overwhelming.</p>
<p>I think your problem is the hdf5 files, not Cactus.
Hdf5 is a file format that Cactus uses. You can open
them with commands like h5ls, or Python's h5py library
(which the notebook provides some examples of usage).<br>
</p>
<blockquote type="cite">
<div dir="ltr">
<div><br>
</div>
<div>I want to work on the problems at the end of
these notebooks, but not correctly seeing the
solution makes me think there's something wrong
since the beggining, and I have not changed
anything else from the initial notebook.</div>
</div>
</blockquote>
<p>So I'm not 100% sure what's going on, but I suspect
you've either not clicked far enough or you have
modified the notebook. Please check and let me know.</p>
<p>--Steve<br>
</p>
<blockquote type="cite">
<div dir="ltr">
<div><br>
</div>
<div>Has this happened to anyone before?</div>
<div><br>
</div>
<div>I'm sorry for the long email, I'm very new to
this software and there's so much to learn! :-)</div>
<div>Thank you in advance.</div>
<div><br>
</div>
<div>- Enzo</div>
</div>
<br>
<div class="gmail_quote">
<div dir="ltr" class="gmail_attr">El mié, 8 mar 2023
a las 14:02, Steven R. Brandt (<<a
href="mailto:sbrandt@cct.lsu.edu"
target="_blank" moz-do-not-send="true"
class="moz-txt-link-freetext">sbrandt@cct.lsu.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">
<div>
<p>You've come to the right place. What's the
problem?</p>
<p>--Steve<br>
</p>
<div>On 3/7/2023 7:41 PM, Enzo Iubini wrote:<br>
</div>
<blockquote type="cite">
<div dir="ltr">
<div>Hello!</div>
<div>Thank you for approving my tutorial
account.</div>
<div><br>
</div>
<div>I have a small question. I'm having a
bit of trouble with some tutorial
notebooks, in particular the Heat Equation
and Wave Equation notebooks, where the
simulations are not running properly. The
question is, who can I contact to get
support with this? I would not want to bug
you if this is not your job, but I'm a
little lost and got nobody to ask for
help.</div>
<div><br>
</div>
<div>Thank you in advance.</div>
<div>Greetings!</div>
<div><br>
</div>
<div>Enzo Iubini</div>
</div>
<br>
<div class="gmail_quote">
<div dir="ltr" class="gmail_attr">El lun, 5
dic 2022 a las 13:12, Steven R. Brandt
(<<a href="mailto:sbrandt@cct.lsu.edu"
target="_blank" moz-do-not-send="true"
class="moz-txt-link-freetext">sbrandt@cct.lsu.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">Approved.
:)<br>
<br>
--Steve<br>
<br>
On 12/5/2022 9:53 AM, <a
href="mailto:RegistrationBot@einsteintoolkit.org"
target="_blank" moz-do-not-send="true"
class="moz-txt-link-freetext">RegistrationBot@einsteintoolkit.org</a>
wrote:<br>
> Einstein Toolkit maintainers:<br>
><br>
> New Tutorial Request:<br>
> Name: <a
href="http://orcid.org/0000-0001-9327-0832"
rel="noreferrer" target="_blank"
moz-do-not-send="true"
class="moz-txt-link-freetext">http://orcid.org/0000-0001-9327-0832</a><br>
> Email: <a
href="mailto:egic.enzo@gmail.com"
target="_blank" moz-do-not-send="true"
class="moz-txt-link-freetext">egic.enzo@gmail.com</a><br>
> Organization: ORCID<br>
> Why: Hello!<br>
> My name is Enzo Iubini and I'm doing
my Master's degree in Applied Mathematics.
I study at Universidad de Chile, and my
work is about binary black holes. My
proffessor has recommended me to try
Einstein toolkit, but I'm having trouble
understanding how to work around it,
therefore I'd really like to have a
tutorial account.<br>
> I do not have a homepage.<br>
><br>
> Thanks in advance!<br>
><br>
><br>
> The above user has requested a
tutorial account.<br>
><br>
> Thanks,<br>
> Einstein Toolkit Registration Bot<br>
><br>
>
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