Present: Frank, Eloisa, Matt, Roland, Steve, Zach, Erik,
Using slack to replace the IRC channel: * Frank inverstigated slack and used it in a different project and has had good experience so far. A test slack project has been created: https://einsteintoolkit.slack.com if you would to test this please send an email an Frank Loeffler knarf@cct.lsu.edu until we have a more permanent solution (in case we decide to use slack). Please provide your email address and name to appear in slack.
Making grid function storage in HydroBase optional: * currently there are a number of grid functions that are not always being used or could be recomputed * there is a desire to make storage for those optional with the default being to have storage * Roland feels that this can be cumbersome if all client thorns require logic to check for storage rather than being able to rely on a complete set of variables always being present. This applies in particular to eps which can only be recomputed if the EOS is known
Making GRHydro_Initdata independent of HydroBase: * agree that this is good idea, would make it useful as ID generator for other ID thorns eg for shock tubes * some parts are unfortunately tied to GRHydro and would have to be moved out of the thorn
Reducing number of checkpointed variables in McLachlan: * RHS variables are fine to not be checkpointed. There should be a helper thorn ML_BSSN_Helper that adjust the checkpoint tags at runtime * constraints need to be checkpointed since they require prolongation to compute which cannot be re-created after recovery
Carpet-preSync by Steve, a pull request exists: * an attempt to move the start of the SYNC forward so that a grid function that is computed only in the interior later needed everywhere SYNCing happens automatically and early
TeamSpeak or Mumble as Google Hangout replacement: * both use equivalent technology * community is split about which one is better * hosting at LSU may be possible as IT is interested in this * external hosters tend to offer both for little money, will need grant money for this
Yours, Roland