[Users] meeting minutes for 2026-10-01

[Roland Haas]

Present: Roland, Lucas,, Zach, Max, Nikolai
Chair: Zach
Minutes: Roland

ET summer school recordings
---------------------------

* all presentations uploaded
* should be made public shortly after Oct 2nd

wiki transition
---------------

* no updates

accumulated updates after release
---------------------------------

* McLachlan: no updates

unanswered questions
--------------------

* no new questions

AI policy document
------------------

* there was a discussion about creating a AI policy usage guideline,
  similar to what other projects have
* connected to AI for NR efforts: https://github.com/AI-for-NR/AI-for-NR
* will continue the discussion
* Zach reports that we have received AI based contributions, will
  continue to accept them and handle in a polite manner, pointing to
  policy if required (eg thorns are created for science reasons)

Open tickets
------------

* https://github.com/EinsteinToolkit/tickets/issues/2974 "CarpetX:
  Support summation by parts derivative operators". Roland asked about
  a science application code using them. Zach suggests a gallery
  example to illustrate their use.
* https://github.com/EinsteinToolkit/tickets/issues/2973 "Add support
  for Multi-step Runge-Kutta methods in CarpetX/ODESolvers" contains a
  cleaned up implementation of the methods of
  https://arxiv.org/abs/2603.05763 . Request to add groupstoragencrease
  as full Cactus API
* https://github.com/EinsteinToolkit/tickets/issues/2956 "CarpetX:
  Allow conditional expressions after SCHEDULE declarations in
  schedule.ccl" has two competing pull requests. Those should be merged.
** would make most of https://github.com/EinsteinToolkit/tickets/issues/2948

Yours,
Roland

-- 
My email is as private as my paper mail. I therefore support encrypting
and signing email messages. Get my PGP key from http://pgp.mit.edu .