Present: Roland H, Maria H, Leonardo W, Steve B, Yosef Z, Zach E, Atul K
Chair: Steve B, Minutes: Atul K
* SPEC benchmark contribution [https://bitbucket.org/einsteintoolkit/tickets/issues/2470] [RH, SB] Nothing new
* ET 2021 NA summer school [http://lists.einsteintoolkit.org/pipermail/users/2021-May/007944.html] [RH] Roland - Collecting info from people attending. 1 empty lecture slots - probably going to be used for lightning talk.
Roland - Talk abstracts are accepted up until 23/June. Registration (no-abstract) deadline is upto 2 days before the Meeting. Meeting dates 26-30th July.
Maria - May not be able to attend, travelling.
Atul - Is making a doc compiling the info on LORENE code. Going to share the doc with 5 people involved in the LORENE discussion. Needed in advance to be installed on the servers.
Yosef - Do Maria, Bruno, Antonios, Atul need coordination emails? Maria - Going to get things ready by the June 23rd deadline. Roland - Sent emails IDs to Yosef.
BlackHoles@Home (http://astro.phys.wvu.edu/bhathome/)
Stand alone code independent of ET and Cactus Steve- Mesh refinement technique on BH@H? ZE using their own Mesh refinement code? Zach - Does a lot of stuff.. Like 3 spheres overlap, with smaller cartesian grids included. Interpolation, coordinate transformation, and so on. Steve - Why does it not call Cactus? Zach - Need full control of all memory for running it on PC. Steve - Make BH at home’s Mesh refinement a real driver in Cactus. Not much overhead with Cactus. Zach - Not MPI parallelized. Build system limitations, can't do on Windows or Mac. Zach - Can interest new users as it makes BBH sims more accessible. Steve - ET works on Mac and Windows (WSL), so can make BH@H also work.
Steve - There should be documentation for adding drivers on ET.
Yosef - Change parameters not possible on Cactus (like mesh refinement)? So that you can stop cactus and restart? Roland - Possible. All thorns free space. Yosef - Cactus refused to restart. Calls terminate and reinitialize. Roland - Shutdown completely. MPI-init needs to be done at the beginning. Can compile with no MPI thorn. Roland and Zach are hacking it currently.
Roland - Gabriele Bozzolla proposed to include Kuibit. People interested in having it and to review this? [http://lists.einsteintoolkit.org/pipermail/users/2021-June/007998.html] [ https://bitbucket.org/einsteintoolkit/tickets/issues/2538/inclusion-of-kuibi... ] Atul - Interested in it and could be a co-reviewer. Roland - More than one reviewer is good. Steve - Interested but can’t commit. Got Kuibit mentioned in the BBH gallery page for starters.
* [https://www.einsteintoolkit.org/tools/unanswered.php unanswered question on mailing list] Prasad R. Wants to use PiecewisePolytrope or tabulated EoS with IllinoisGRMHD - Leonardo W may be answering it.
HiK - Recon dependency issue. Need to be careful to compare, they have Mag fields code on but with it B =0. They always run with evolve B_vec = yes, but with B = 0. Brings differences in con2prim. Their Par files are at : https://einstein.pr.infn.it/svn/numrel/pub/BNS_2015_work/WorkBNS/ They use PRThorns. If there are large differences in recon methods there might be bugs in recon methods.
* [ https://bitbucket.org/einsteintoolkit/tickets/issues?status=open&status=... open tickets sorted by update time]
* [ https://bitbucket.org/einsteintoolkit/tickets/issues?status=new&status=o... tickets ready for review]
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Atul Kedia PhD Candidate University of Notre Dame