Present: Roland, Peter, Zach, Steve, Atul. Yosef, Beyhan, Cheng-Hsin
New contributions:
* Zach, Cheng-Hsin: NRPyElliptic, can compile with ET * Hayley, Zach: FLRW started review, interacting, Python dependency removed * Alireza, Beyhan: time constraints, will likely skip this review and release * Sam, Peter: SelfForce1D checked out and compiling
Moving back to 9:00am * accepted, no objections
gallery examples: * BBH - Steve is working on it (simulation finished)
functionality to retire: * Tmunu inheritance from ADMBase, StaticConformal * REQUIRES THHORN is deprecated, Roland is replacing its use by REQUIRES * also add CoordGauge
Messages on list: * http://lists.einsteintoolkit.org/pipermail/users/2022-August/008654.html is an internal Carpet issue, Roland thinks that it means that Carpet tries to copy between refinement levels with different resolution, wold need stack backtrace to see exactly where it is a called from
* http://lists.einsteintoolkit.org/pipermail/users/2022-August/008649.html is an MPI failure on a new cluster. Roland was in contact with her, error message indicates a failure in MPI in reduction call. Strange thing is that error happens relatively late, since there should have been reductions before. Peter says he has seen delayed SEGFAULTs if one does not ask or enough memory in the submit script (#SBATCH --mem XXX).Beyhan notes that the output indicates that 1GB is required for the simulations
Open tickets:
* Zach worked on FishboneMoncrief ID thorn (https://bitbucket.org/einsteintoolkit/tickets/issues/2503) with significant updates in sympy / NRPy+. Will include improved integration with ADMBase's methods. * Zach found that the proposed change can lead to slight differences wrt to centering (https://bitbucket.org/einsteintoolkit/tickets/issues/181) * Improve McLachlan accuracy (https://bitbucket.org/einsteintoolkit/tickets/issues/963), Zach added a comment, found big improvement, Peter had looked in during hackathon at UIdaho, but could not find obvious change
ET conventions * Zach brought up old code in ADMBase and non-intuitive required usage * Yosef and Steve brought up suggested code style. Cactus has one in MaintGuide.pdf chapter A2 "Coding Style" (not online but in Cactus/docs/)
Zach suggested adding discussions on CarpetX transition to the agenda * full transition and retirement for Carpet may be years in the future * many thorns currently require re-implementation, adapting * Steve mentions that for a while both stacks may need to be maintained * Yosef suggests that if these are many small changes then these would be good hackathon projects * Sam Cupp is working on porting IllinoisGRMHD to CarpetX * Roland mentioned weekly CarpetX call Wed 9am Central Time (join http://lists.einsteintoolkit.org/mailman/listinfo/carpetx-developers to receive Zoom invite ) * add as recurring item agenda
ET workshop in Dublin: * no call during workshop (2 weeks from now) * Steve, Peter, Roland in person * Steve will present on NRPy+, will interact with Zach
Chair next week: Zach Minutes next week: Roland (or Leo)
Yours, Roland