present: Roland, Erik, Alex, Helvi, Steve, Allen, Cheng-Hsin, Jay, Liwei, Lorenzo, Lucas, Sam, Yosef

* discussed what Canuda codes to propose for inclusion ** NewRadX (Alex, Liwei and Jay will review) ** Multipole(X) (Lucas, Roland is reviewer) ** will defer LeanBSSNMoLX, NPScalarsX to next release

* Erik proposes Z4c for inclusion, will champion it. Steve reviewer.

* Allen may propose inclusion of PunctureTracker and ApparentHorizonFinderDirect. Will leave out QuasiLocalMeasures for now since it requires hacks due to Fortran and complex valued grid variables.

** Roland mentioned that the driver specific changes to Multipole should be isolated to a small section of the the code that constructs the test data. Would be good to have single code that supports both drivers (easier to maintain)

** Jay has been using NewRadX with Z4c on Frontier, this worked on GPUs ** Alex suggested that someone at RIT who used NewRadX may be a good person to review,

** Roland mentioned that tests for release will start May 3rd so all reviews must have (positively) finished by then

** Jay will focus on finish the AsterX paper and AsterX will be proposed for inclusion afterwards so that documentation can be written

CarpetX testing and development:

* Erik is currently testing a qc0 setup and would like to use a common setup for the different codes to compare them more directly. Cheng-Hsin will upload the parameter file for grazing collisions that he used with LeanBSSNMoLX to the CarpetX wiki. ** Jay asked about a speed benchmark of Z4c vs. other codes, right now this does not exist. Newer versions of CarpetX make this easier though by outputting performance data.

* Steve and Sam have been looking at CarpetX + NRPy+ ** Sam ran into hard-coded limit on number of grid functions per grid function group, will update limit in CarpetX source code

* Lucas and Erik are working on Multipatch code, currently doing some debugging.

* Lucas made CarpetX documentation TeX files compatible with online documentation system, so they now show up on einsteintoolkit.org

AsterX:

* Jay is making steady progress on the paper * working with Samuel Tootle on FUKA reader * want paper out ASAP

CanudaX:

* Cheng-Hsin has been debugging NPScalarX and in doing so found some race condition in the older NPScalar code * currently still sees some differences but only in the boundaries so could be due to different boundary location in Carpet / CarpetX

Runge Kutta prolongation:

* discussed Liwei's current status of code * required changes can all do done in "user" code and do not require changes to CarpetX itself * suggestion is to implement a standalone RK4 time stepper code for this and not use ODESolvers for now * will need full grid functions for Y1, Y2, Y3, Y4 just for prolongation