<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
<style type="text/css" style="display:none;"> P {margin-top:0;margin-bottom:0;} </style>
</head>
<body dir="ltr">
<div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
<span style="margin:0px;font-size:15px;font-family:"Segoe UI", "Segoe UI Web (West European)", "Segoe UI", -apple-system, system-ui, Roboto, "Helvetica Neue", sans-serif;color:rgb(32, 31, 30);background-color:rgb(255, 255, 255)"></span></div>
<span style="background-color: rgb(255, 255, 255); display: inline !important; font-size: 12pt;"><u>Present</u>:</span><span style="background-color:rgb(255, 255, 255);display:inline !important"><span style="font-size: 12pt;"> </span></span>
<div><span data-markjs="true" class="markxg2g20nsv" data-ogac="" data-ogab="" data-ogsc="" data-ogsb="" style="margin: 0px; background-color: rgb(255, 255, 255); font-size: 12pt;">Zach Etienne</span><span style="background-color: rgb(255, 255, 255); display: inline !important; font-size: 12pt;">,
Yosef Zlochower, <span style="color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);display:inline !important">
Miguel Garcia, Leonardo Werneck, Ken Sible, Atul Kedia, </span>Steve Brandt, Roland Haas, Peter Diener, Maria Hamilton</span>
<div><u>Chair:</u> <span style="color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);display:inline !important">Peter Diener</span></div>
<div><font color="#000000"><u>Minute taker</u>: <span style="background-color:rgb(255, 255, 255);display:inline !important">Maria Hamilton</span><br>
</font>
<div style="margin:0px;background-color:rgb(255, 255, 255)">
<ul>
<li><span style="font-size: 12pt;"><b>pre-Agenda : </b>nothing<b> </b></span></li><li><span style="font-size: 12pt;"><b>SPEC benchmark contribution</b></span><span style="font-size: 12pt;">: Steve no news</span></li><li><span style="font-size: 12pt;"><b style="color: rgb(0, 0, 0); background-color: rgb(255, 255, 255);">Workshop update: </b></span></li><ul>
<li><span style="font-size: 12pt;">Roland: deadline talks registration June 23</span></li><li><a href="https://einsteintoolkit.github.io/et2021uiuc/" title="https://einsteintoolkit.github.io/et2021uiuc/">ETK 2021 Workshop Webpage</a></li><li><span style="margin:0px"><span style="margin:0px;font-size:12pt"><a href="https://hyperspace.uni-frankfurt.de/2021/05/20/north-american-einsteintoolkit-virtual-school/" title="https://hyperspace.uni-frankfurt.de/2021/05/20/north-american-einsteintoolkit-virtual-school/" style="margin:0px">ETK
2021 Workshop Announcement</a> </span></span></li><li>Scientific committee - Yosef, tasked to contact speakers, Roland will provide email addresses.<br>
</li></ul>
<li><span style="font-size: 12pt;"><b>New release main features</b></span><span style="font-size: 12pt;">:</span><span style="font-size: 12pt;"> </span></li><ul>
<li><span style="margin:0px;font-size:12pt">POWER: Roland just pushed a new commit, added documentation, Maria will test</span><span style="margin:0px;font-size:12pt">.</span><u><b></b></u></li></ul>
<li><span style="font-size: 12pt;"><b><b style="color:rgb(0, 0, 0);background-color:rgb(255, 255, 255)">New release issues</b>: <b style="color:rgb(0, 0, 0);background-color:rgb(255, 255, 255)"><span style="margin:0px;font-weight:400;background-color:rgb(255, 255, 255);display:inline !important"><span style="margin:0px"><u>BBH</u>
Gallery</span></span></b></b></span></li><ul>
<li><span style="font-size: 12pt;"><b><span style="color:rgb(0, 0, 0);font-weight:400;background-color:rgb(255, 255, 255);display:inline !important"><span>Steve reran BBH from Gallery, run on Deep(?) Bayou cluster, c<span style="margin:0px;font-size:12pt"><b><span style="margin:0px;font-weight:400;background-color:rgb(255, 255, 255);display:inline !important"><span style="margin:0px">ode
dies with assertion failure on number of threads. Made ticket, reported problem to </span></span></b></span>Erik, who said is not pssibe, his code is perfect!<br>
</span></span></b></span></li><li><b style="color: inherit; font-family: inherit; font-size: 12pt; font-style: inherit; font-variant-ligatures: inherit; font-variant-caps: inherit;"><span style="color: rgb(0, 0, 0); font-weight: 400;">Zach suggested to try running with previous release,
if yes, then revert to it </span></b><br>
</li><li><span style="font-size: 12pt;"><b><span style="color:rgb(0, 0, 0);font-weight:400;background-color:rgb(255, 255, 255);display:inline !important"><span>Steve will try, and see if works, although expects is an issue with the cluster, not teh code</span></span></b></span></li><li><span style="font-size: 12pt;"><b><span style="color:rgb(0, 0, 0);font-weight:400;background-color:rgb(255, 255, 255);display:inline !important"><span>Roland explained that it might come from an misunderstanding between threads and computing nodes, a problem
due to hwloc1, hwloc2 conflict. He found a workaround for QueenBee and advised Steve to check the QueenBee optionlist.</span></span></b></span></li><li><span style="font-size: 12pt;"><b><span style="color:rgb(0, 0, 0);font-weight:400;background-color:rgb(255, 255, 255);display:inline !important"><span>Steve mentioned that hyperthreading is disabled for most clusters, while here is enabled and threads per
core = 1, thus this might be the issue.</span></span></b></span></li></ul>
<li><span style="font-size: 12pt;"><b>Other gallery examples</b></span><span style="font-size: 12pt;">: </span></li><ul>
<li><span style="font-size: 12pt;"><u>BNS:</u> Atul NSTracker link provided</span></li><ul>
<li><span style="font-size: 12pt;">asks what should be updated, if results identical</span></li><li>Roland advises update everything</li><li>Leo: works on documentation for VolumeIntegral and will update in the ETK arrangements. </li><li>Maria asks if the way VolumeIntegral is set up to follow star center does depend on mesh refinement and if is there any need for AHFinder or PunctureTracker. Zach explains that it tracks the center of the quantity set up to track, for example the lapse
of a BBH system, and it does not depend of regridding. As for AHFinder or PunctureTracker, it can use both.<br>
</li><li>Zach computed constraint viloation, and set it up to avoid interior of horizon, by specifying radius and center, thus substracting off interiors, and also excising region outside some boundary like when tracking constraint violation<br>
</li></ul>
<li>Name for the release ->male -> Lorentz -> no bjection, no vote necessary</li><li>Peter spoke up, <a href="https://en.wikipedia.org/wiki/Hendrik_Lorentz" title="https://en.wikipedia.org/wiki/Hendrik_Lorentz">
Lorentz</a> it is</li><li><u>Multipach Wave Equaton</u> -> Bill travels, sent update to Zach, bumps regarding visualization, will update/improve web page, to make it easier for next person, will update ticket on Mon </li><li><u>Poisson Equation:</u> -> Miguel updated all results, will replace on the website </li><ul>
<li>Roland confirms that will be no more changes of the code after the freeze<br>
</li></ul>
<li><u>TOV</u> -> Peter ran it, everything looks identical, can't use presink yet, and not uploaded yet. Did not know what was used to generate the plot, will use gnuplot and add script on web page, update source tree, rerun and add updates.</li><li>
<div>Zack: friendly reminder of crunch time, everything needs to be in place for next week, update all that needs to be updated. He will work on release announcement. </div>
</li><li>
<div><u>Release</u> <a href="https://docs.einsteintoolkit.org/et-docs/Release_Process" title="https://docs.einsteintoolkit.org/et-docs/Release_Process">Process</a> and <a href="https://docs.einsteintoolkit.org/et-docs/Release_Details" title="https://docs.einsteintoolkit.org/et-docs/Release_Details">Details</a><br>
</div>
</li><li>
<div>Roland reminded Zach to contact those who contributed and ask if they are willing to be listed - usually should be listed as authors if they are gallery runners </div>
</li><li>
<div>Zach - will take care of Zenodo link asks if its a new one or updated. Roland explains that it keeps track of versions, but needs token change to "become" Steve to be able to update.</div>
</li><li>
<div>Nothing else on the release<br>
</div>
</li></ul>
</ul>
<ul>
<li><span style="font-size: 12pt;"><b>Unanswered mailing list queries</b></span><span style="font-size: 12pt;">: Peter - no unanswered email found </span></li><li><span style="font-size: 12pt;"><b>Tickets</b></span><span style="font-size: 12pt;">: </span></li><ul>
<li><span style="font-size: 12pt;">Roland couple of tickets, nothing to worry about </span></li><li><span style="font-size: 12pt;">Flang compiler <a href="https://bitbucket.org/einsteintoolkit/tickets/issues/2529/flang-error-in-cactus-src-util" title="https://bitbucket.org/einsteintoolkit/tickets/issues/2529/flang-error-in-cactus-src-util">
Error #2529</a></span></li><li><span style="font-size: 12pt;">Problem with Vectors compipation in gcc8, but we use gcc9</span></li><li><span style="font-size: 12pt;">Bug report about initialized variables, if you want some that don't exist.</span></li><li><span style="font-size: 12pt;">Peter Erick found Flang issue<br>
</span></li></ul>
<li><b>End of Agenda:</b> Miguel reported about Gabriel's pull request for machine file Frontera simfactory2. Roland will look into it to be approved<br>
</li><li><span style="font-size: 12pt;"><b>May 27 meeting</b></span><span style="font-size: 12pt;">: Minute taker: Bill. Chair: Atul</span></li></ul>
</div>
<div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
<br>
</div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
<br>
</div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
<span style="color: rgb(0, 0, 0); font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt;">Maria</span></div>
<div id="Signature">
<div>
<div id="divtagdefaultwrapper" dir="ltr" style="font-size:12pt; color:#000000; font-family:Calibri,Helvetica,sans-serif">
<div name="divtagdefaultwrapper" style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:; margin:0">
<div>
<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, <span id="ms-rterangepaste-start"></span><i style="font-size:16px"><font size="2">Phone:
(304)696-2754</font></i></font></i></font></i><br>
</font></i></div>
<div dir="ltr"><br>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</body>
</html>