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<p>Hi Erik,</p>
<p>Yes it is a very interesting problem, and a hard one.<br>
</p>
<p>Nigel, Denis and I have been working hard the last year and have
managed to implement a complete CCM algorithm that joins a BSSN
evolution through CTGamma with a null evolution through
NullCodeSpec. On-the-fly extraction-only works very well with BBH,
however full CCM seems to be unstable even for Minkowski
space-time. We are working on implementing a slightly simpler,
slightly different implementation to help identify the cause of
this; it has been very difficult to isolate.<br>
</p>
<p>We will surely take you up on your offer of advice, I have
already received superb answered to questions on this mailing
list.</p>
<p>Cheers,</p>
<p>Chris<br>
</p>
<p><br>
</p>
<div class="moz-cite-prefix">On 12/17/18 5:24 PM, Erik Schnetter
wrote:<br>
</div>
<blockquote type="cite"
cite="mid:CADKQjjfjHbSgwwFMFne2sAoO_vdytinW1O-ssTjen7V_A9YZjA@mail.gmail.com">
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<div dir="ltr">Chris
<div><br>
</div>
<div>This is an exciting topic.</div>
<div><br>
</div>
<div>I assume the meat of the problem lies in the formulation of
the equations, discrete stability, etc. In case you get stuck
on an infrastructure problem instead (i.e. something related
to Cactus, Carpet, scheduling, etc.), I'd (and probably others
on this list) will be happy to assist.</div>
<div><br>
</div>
<div>-erik</div>
<div><br>
</div>
<div><br>
</div>
<div><br>
</div>
</div>
<br>
<div class="gmail_quote">
<div dir="ltr">On Sun, Dec 16, 2018 at 1:53 PM Chris Stevens
<<a href="mailto:c.stevens@ru.ac.za" moz-do-not-send="true">c.stevens@ru.ac.za</a>>
wrote:<br>
</div>
<blockquote class="gmail_quote" style="margin:0px 0px 0px
0.8ex;border-left-width:1px;border-left-style:solid;border-left-color:rgb(204,204,204);padding-left:1ex">
<div bgcolor="#FFFFFF">
<p>Hi everyone,</p>
<p>a two year postdoc is available to further develop code
for Cauchy Characteristic Matching in the Cactus
framework. Please see the below hyperspace ad for details.<br>
</p>
<p><a
class="gmail-m_-1998447782693605500moz-txt-link-freetext"
href="https://hyperspace.uni-frankfurt.de/2018/12/14/postdoctoral-position-in-numerical-relativity-rhodes-university-south-africa/"
target="_blank" moz-do-not-send="true">https://hyperspace.uni-frankfurt.de/2018/12/14/postdoctoral-position-in-numerical-relativity-rhodes-university-south-africa/</a></p>
<p>Closing date is 16th January.</p>
<p>Cheers,</p>
<p>Chris<br>
</p>
<div class="gmail-m_-1998447782693605500moz-signature">-- <br>
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</b></font></font></font><font
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Chris Stevens</b></font></font></font><font
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Grahamstown, 6139</font></font></font><font
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</b></font></font></font><font
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style="font-size:9pt"
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-- <br>
<div dir="ltr" class="gmail_signature">
<div dir="ltr">
<div>Erik Schnetter <<a href="mailto:schnetter@cct.lsu.edu"
target="_blank" moz-do-not-send="true">schnetter@cct.lsu.edu</a>><br>
<a
href="http://www.perimeterinstitute.ca/personal/eschnetter/"
target="_blank" moz-do-not-send="true">http://www.perimeterinstitute.ca/personal/eschnetter/</a></div>
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<p class="western" style="margin-top: 0.19in"><font
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</b></font></font></font><font
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style="font-size: 9pt" size="2"><b>Dr Chris
Stevens</b></font></font></font><font
color="#7b1272"><font face="Arial, serif"><font
style="font-size: 9pt" size="2"><b><br>
</b></font></font></font><font
color="#7b1272"><font face="Arial, serif"><font
style="font-size: 9pt" size="2"><b>Lecturer</b></font></font></font><font
color="#7b1272"><font face="Arial, serif"><font
style="font-size: 9pt" size="2">: </font></font></font><font
color="#7b1272"><font face="Arial, serif"><font
style="font-size: 9pt" size="2">Mathematics</font></font></font><font
color="#7b1272"><font face="Arial, serif"><font
style="font-size: 9pt" size="2"> </font></font></font><font
color="#1f497d"><font face="Arial, serif"><font
style="font-size: 9pt" size="2"><br>
</font></font></font><font color="#7b1272"><font
face="Arial, serif"><font style="font-size: 9pt"
size="2">Facult</font></font></font><font
color="#7b1272"><font face="Arial, serif"><font
style="font-size: 9pt" size="2">y of Science</font></font></font><font
color="#7b1272"><font face="Arial, serif"><font
style="font-size: 9pt" size="2"><br>
t: +27 (0) 46 603 </font></font></font><font
color="#7b1272"><font face="Arial, serif"><font
style="font-size: 9pt" size="2">7547</font></font></font><font
color="#009d93"><font face="Arial, serif"><font
style="font-size: 9pt" size="2"><br>
</font></font></font><font color="#7b1272"><font
face="Arial, serif"><font style="font-size: 9pt"
size="2">1 Artillery Road,</font></font></font><font
color="#7b1272"><font face="Arial, serif"><font
style="font-size: 9pt" size="2"> Grahamstown,
6139</font></font></font><font color="#7b1272"><font
face="Arial, serif"><font style="font-size: 9pt"
size="2"><b> </b></font></font></font><font
color="#1f497d"><font face="Arial, serif"><font
style="font-size: 9pt" size="2"><b><br>
</b></font></font></font><font
color="#7b1272"><font face="Arial, serif"><font
style="font-size: 9pt" size="2">PO Box 94,
Grahamstown, 6140, South Africa<br>
</font></font></font><font color="#7b1272"><font
face="Arial, serif"><font style="font-size: 9pt"
size="2"><font color="#009d93"><font
face="Arial,
 serif"><font
style="font-size: 9pt" size="2"><b> </b></font></font></font><a
href="http://www.ru.ac.za"
moz-do-not-send="true"><font color="#00aec7"><font
face="Arial, serif"><font
style="font-size: 9pt" size="2"><b>www.ru.ac.za</b></font></font></font></a></font></font></font><font
color="#1f497d"><font face="Arial, serif"><font
style="font-size: 9pt" size="2"><b> </b></font></font></font><font
color="#1f497d"><font face="Arial, serif"><font
style="font-size: 9pt" size="2"><b><a
href="http://www.chrisdoesmaths.com/"
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face="Arial, serif"><font
style="font-size:
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color="#00aec7"><font face="Arial,
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9pt" size="2"><b>www.</b></font></font></font><font
color="#00aec7"><font face="Arial,
serif"><font style="font-size:
9pt" size="2"><b>c</b></font></font></font><font
color="#00aec7"><font face="Arial,
serif"><font style="font-size:
9pt" size="2"><u><b>hrisdoesmaths.com</b></u></font></font></font></font></font></font></a>
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