Hi Erik,

Yes it is a very interesting problem, and a hard one.

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.

We will surely take you up on your offer of advice, I have already received superb answered to questions on this mailing list.

Cheers,

Chris

Chris

This is an exciting topic.

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.

-erik

On Sun, Dec 16, 2018 at 1:53 PM Chris Stevens <c.stevens@ru.ac.za> wrote:

Hi everyone,

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.

https://hyperspace.uni-frankfurt.de/2018/12/14/postdoctoral-position-in-numerical-relativity-rhodes-university-south-africa/

Closing date is 16th January.

Cheers,

Chris

--

Dr Chris Stevens   Lecturer: Mathematics   Faculty of Science   t: +27 (0) 46 603 7547   1 Artillery Road, Grahamstown, 6139    PO Box 94, Grahamstown, 6140, South Africa   www.ru.ac.za   www.chrisdoesmaths.com

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Erik Schnetter <schnetter@cct.lsu.edu>
http://www.perimeterinstitute.ca/personal/eschnetter/

--

Dr Chris Stevens   Lecturer: Mathematics   Faculty of Science   t: +27 (0) 46 603 7547   1 Artillery Road, Grahamstown, 6139    PO Box 94, Grahamstown, 6140, South Africa   www.ru.ac.za   www.chrisdoesmaths.com