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<p><span style="font-size: 12pt; font-family: Calibri, Helvetica, sans-serif;">People present:</span></p>
<p><span style="font-size: 12pt; font-family: Calibri, Helvetica, sans-serif;">Christopher Evans, Helvi Witek, Peter </span><span style="font-size: 12pt; font-family: Calibri, Helvetica, sans-serif;">Diener, Steven Brandt, Roland Haas, Zach Etienne, Maria Babiuc,
Geraint Pratten</span></p>
<p><span style="font-size: 12pt; font-family: Calibri, Helvetica, sans-serif;">Chair: Zach Etienne</span></p>
<p><span style="font-size: 12pt; font-family: Calibri, Helvetica, sans-serif;">Minutes: Maria Babiuc</span></p>
<p><br>
</p>
<p><span style="font-size: 12pt; font-family: Calibri, Helvetica, sans-serif;">Zach Etienne opened the meeting.</span></p>
<p></p>
<ul style="margin-bottom: 0px; margin-top: 0px;">
<li><span style="font-size: 12pt; font-family: Calibri, Helvetica, sans-serif;">The </span><span style="font-size: 12pt; font-family: Calibri, Helvetica, sans-serif;">first order on the agenda: official </span><span style="font-size: 12pt; font-family: Calibri, Helvetica, sans-serif;">ETK
representation at the Advances in Computational Relativity workshop to be held at </span><span style="font-size: 12pt; color: rgb(34, 34, 34); font-family: Calibri, Helvetica, sans-serif;">Brown University, Sep 9 - Dec 11, 2020. </span>
<ul>
<li>Zach will attend <span style="font-family: Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(34, 34, 34);">Oct 5-9, 2020. </span></li><li><span style="font-family: Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(34, 34, 34);"></span><span style="font-family: Calibri, Helvetica, sans-serif; font-size: 12pt;">Pieter Diener will be there at the opening and, although will give a talk
on self-force, can act as ETK representative. </span><span style="font-family: Calibri, Helvetica, sans-serif; font-size: 12pt;">Sep 14-18, 2020. </span></li><li><span style="font-family: Calibri, Helvetica, sans-serif; font-size: 12pt;"></span>Other ideas on how to make ETK
<span style="font-family: Calibri, Helvetica, sans-serif; font-size: 12pt;">representation</span><span style="font-family: Calibri, Helvetica, sans-serif; font-size: 12pt;"> more official: add a logo to the talks (Zach), wear
</span><span style="font-family: Calibri, Helvetica, sans-serif; font-size: 12pt;">T-shirts</span><span style="font-family: Calibri, Helvetica, sans-serif; font-size: 12pt;"> with the logo (Steve). </span></li><li><span style="font-family: Calibri, Helvetica, sans-serif; font-size: 12pt;"></span>The program is not out yet, but <span style="font-family: Calibri, Helvetica, sans-serif;">Hevli, who is in the Committee for Math and Computational Approaches, and the scientific
organizer of one of the weeks, suggested including ETK in one of the discussion sessions, as a platform for modeling techniques relevant to LISA and LSC</span><span style="font-size: 12pt; font-family: Calibri, Helvetica, sans-serif;">. </span></li></ul>
</li></ul>
<p></p>
<p></p>
<ul style="margin-bottom: 0px; margin-top: 0px;">
<li>Second, was discussed the status of the <span>CT_MultiLevel tests on macOS. </span>
<ul>
<li><span>Maria confirmed that <span>tests run fine on macOS Mojave with homebrew. </span></span></li><li><span><span>Zach mentioned he has a student who might be able to check the status of the tests on Catalina. </span></span></li><li><span><span>Maria will contact Ian Hinder to find out how many ETK mac users are relying on macport. </span></span></li></ul>
</li><li><span style="font-size: 12pt;">Zach advanced to the third item on the agenda, namely </span><span style="font-size: 12pt;">unanswered question on mailing list and remarked that Roland is doing a terrific job in answering any questions that arise from all
users. The then </span><span style="font-size: 12pt;">moved to open tickets and tickets in review. </span>
<ul>
<li><span style="font-size: 12pt;">Roland ha</span><span style="font-size: 12pt;">d</span><span style="font-size: 12pt;"> no new </span><span style="font-size: 12pt;">ticket to report, and mentioned that the reason why </span><span style="font-size: 12pt;">tests
hang on two Virtual Machines running on a MacOS 8G laptop is that too little memory is allocated to each machine, and consequently they run out of memory. The fix is to make sure memory doesn't get allocated. </span></li><li><span style="font-size: 12pt;">One other ticket Zach mentioned is that supermike fails to compile with intel, due to an internal conflict between the new c++ compiler and previous gcc versions. Peter mentioned that ETK runs with simfactory on supermike2. Zach
and Peter agreed to close the ticket. </span></li><li><span style="font-size: 12pt;"></span><span style="font-size: 12pt;">Next Zach
</span><span style="font-size: 12pt;">asked and was granted the request</span><span style="font-size: 12pt;"> to assign
</span><span style="font-size: 12pt;">tickets to</span><span style="font-size: 12pt;"> people that volunteer.</span></li></ul>
</li><li><span><span><span><span>Next, Zach opened the conversation on the BaikalETK code, namely on how to deal with steering parameters run-time vs compile-time, run-time being more convenient for users. </span></span></span></span>
<ul>
<li><span><span><span><span>Zaxh proposes 2 new thorns: BaikalVac and BaikalTmunu, implementing finite difference up to 8th order, with two kernels and more robust options for IllinoisGRMHD. Helvi agreed, as being more manageable for users. </span></span></span></span></li><li><span><span><span><span>Roland mentioned of possibly two more copies of the thorn in the future, to support Llama and CCZ4. </span></span></span></span></li><li><span><span><span><span>As future work, Zach had the idea to link scalar fields with Baikal as well. It followed a conversation between Zach and Helvi regarding the usefulness of public codes modeling scalar fields. The name of Katie Wright was mentioned,
who developed a purely SENR-based scalar field code.</span></span></span></span></li></ul>
</li><li><span><span><span><span>With this all items on the agenda were addressed. Steve wished Zach Happy Birthday!</span></span></span></span>
<ul>
<li><span><span><span><span>Roland mentioned that <span style="font-family: Calibri, Helvetica, sans-serif, Helvetica, EmojiFont, "Apple Color Emoji", "Segoe UI Emoji", NotoColorEmoji, "Segoe UI Symbol", "Android Emoji", EmojiSymbols; font-size: 16px;">testing </span><span style="font-family: Calibri, Helvetica, sans-serif, Helvetica, EmojiFont, "Apple Color Emoji", "Segoe UI Emoji", NotoColorEmoji, "Segoe UI Symbol", "Android Emoji", EmojiSymbols; font-size: 16px;">ETK</span><span style="font-family: Calibri, Helvetica, sans-serif, Helvetica, EmojiFont, "Apple Color Emoji", "Segoe UI Emoji", NotoColorEmoji, "Segoe UI Symbol", "Android Emoji", EmojiSymbols; font-size: 16px;"> on
Mac is still </span>open to discussion. </span></span></span></span></li><li><span><span><span><span>Maria generated visualization for her run on the <span style="font-family: Calibri, Helvetica, sans-serif, Helvetica, EmojiFont, "Apple Color Emoji", "Segoe UI Emoji", NotoColorEmoji, "Segoe UI Symbol", "Android Emoji", EmojiSymbols; font-size: 16px;">binary </span><span style="font-family: Calibri, Helvetica, sans-serif, Helvetica, EmojiFont, "Apple Color Emoji", "Segoe UI Emoji", NotoColorEmoji, "Segoe UI Symbol", "Android Emoji", EmojiSymbols; font-size: 16px;">neutron
star example and </span>the will check for differences with the data from the <span style="font-family: Calibri, Helvetica, sans-serif, Helvetica, EmojiFont, "Apple Color Emoji", "Segoe UI Emoji", NotoColorEmoji, "Segoe UI Symbol", "Android Emoji", EmojiSymbols; font-size: 16px;">ETK </span><span style="font-family: Calibri, Helvetica, sans-serif, Helvetica, EmojiFont, "Apple Color Emoji", "Segoe UI Emoji", NotoColorEmoji, "Segoe UI Symbol", "Android Emoji", EmojiSymbols; font-size: 16px;">Gallery. </span></span></span></span></span></li><li><span><span><span><span><span style="font-family: Calibri, Helvetica, sans-serif, Helvetica, EmojiFont, "Apple Color Emoji", "Segoe UI Emoji", NotoColorEmoji, "Segoe UI Symbol", "Android Emoji", EmojiSymbols; font-size: 16px;">She will <span style="font-family: Calibri, Helvetica, sans-serif, Helvetica, EmojiFont, "Apple Color Emoji", "Segoe UI Emoji", NotoColorEmoji, "Segoe UI Symbol", "Android Emoji", EmojiSymbols; font-size: 16px;">open
a ticket to </span>request</span> more explanation on the initial data used.</span></span></span></span></li></ul>
</li><li><span style="font-size: 12pt;">Lastly, Helvi requested an update of the </span>
<span style="font-size: 12pt;">chair/minute taker </span><span style="font-size: 12pt;">schedule</span><span style="font-size: 12pt;"> for the next month.
</span><span style="font-size: 12pt;">A</span><span style="font-size: 12pt;"> discussion followed, then</span><span style="font-size: 12pt;"> </span><span style="font-size: 12pt;">Zach updated the web page </span><a href="https://docs.einsteintoolkit.org/et-docs/ET_tasks_rota" class="OWAAutoLink" id="LPlnk284032" previewremoved="true" style="font-size: 12pt;">https://docs.einsteintoolkit.org/et-docs/ET_tasks_rota</a><span style="font-size: 12pt;"> to
reflect the updated schedule. </span><br>
</li></ul>
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<p>Zach closed the meeting.</p>
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</p>
<p>Happy Birthday, Zach!<br>
<br>
</p>
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<div dir="ltr">_______________________</div>
<div dir="ltr"><i><font size="2">Maria C. Babiuc Hamilton, Ph.D.</font></i></div>
<div dir="ltr"><i><font size="2">Professor, Department of Physics </font></i></div>
<div dir="ltr"><i style="font-size:12pt"><font size="2"><i style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt"><font size="2"></font></i>College of Science, </font></i><i style="font-size:12pt"><font size="2">Marshall University,</font></i></div>
<div dir="ltr"><i><font size="2">1 John Marshall Drive, </font></i><i style="font-size:12pt"><font size="2">Huntington, WV, 25755</font></i></div>
<div dir="ltr"><i><font size="2"><i style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt"><font size="2"><i style="font-size:12pt"><font size="2">Room S 257, <i style="font-size:16px"><font size="2">Phone: (304)696-2754</font></i></font></i></font></i><br>
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