Hi all,

Here are the minutes for today’s meeting.

Chair: Lucas Minutes: Leo Present: Johnny, Leo, Lucas, Roland, Steve, Zach

* Reproducibility of Data from Binary Neutron Star Simulations - Roland sees binary differences in Space Mask when comparing BNS gallery example with different MPI ranks, but otherwise they seem identical. - Observes issues in the post-merger, but inspiral looks the same. - Option MoL::run_MoL_PostStep_in_Post_Recover_Variables = "no" should make checkpoints bitwise identical.

* Possible ET Inclusions - Z4c: no updates. - BHaHAHAH: needs reviewer. - CCE code to hook up with Specter: needs reviewer. - Updated FLRWSolver thorn: needs reviewer. - New gallery examples: need champions and reviewers. Leo will work on IllinoisGRMHD's and GRHayL's with David's help.

* Unanswered Questions on the Mailing List None.

* Open Tickets - #2282: Erik pointed out a potential double-counting issue, but Zach says that, upon reviewing, there should be no issue because the code assumes cell centering instead of vertex centering. Zach is opposed to using higher order integration methods on potentially noisy data.

* Tickets Ready for Review - #2776: this helps on macOS using the system installed zlib. - #2364: avoid opening and closing HDF5 files multiple times during output. - #2846: added PreSync support in regrid. - #2842: Silo captures incorrect LIBS values on second CST run. - #2845: support (again) filesystem in std::experimental in Silo output. - #2843: update FFTW3 to 3.3.10. - #2821: update PETSc to 3.21.5. - #2841: update GSL tar file to version 2.8. - #2840: supplement rather than supersede auto-guessed data with gsl-config. - #2839: look for multiple flavors of hdf5 library names (Leo will look).

* Lucas is experiencing an issue in CarpetX, but with suggestions form Steve and Roland he has a good idea of how to fix it.

Next Chair: Peter Next Minutes: Roland

Cheers, Leo

------ Leonardo R. Werneck, Ph.D. Postdoctoral researcher Office EP 314 | Department of Physics | University of Idaho 875 Perimeter Dr. MS 0903 Moscow, ID 83844-0903, USA leonardo@uidaho.edu mailto:leonardo@uidaho.edu https://leowerneck.github.io https://leowerneck.github.io/