[Users] Meeting minutes

[Roland Haas]

Hello all,

present were: Frank, Roland, Tanja, Christian, Eloisa, Josh, Yosef, Bruno

ET paper:
 * was not discussed at workshop
 * will submit to CQG
 * need to send to editor before submission so that it can be presented
to editorial board
 * Josh has some more changes, after that Christian will read through it
Frank will contact individual authors about remaining TODO's and write
an abstract
 * Finish mid of this week (latest at end of this week).
 * author list: Frank Loeffler, Joshua Faber, Eloisa Bentivegna, Tanja
Bode, Peter Diener, Roland Haas, Ian Hinder, Bruno C. Mundim, Christian
D. Ott, Erik Schnetter, Gabrielle Allen, Manuela Campanelli, Pablo
Laguna (as is currently in paper repository)

ET workshop:
 * Frank provided a short summary, detailed summary information can be
found on the wiki:
 **
https://docs.einsteintoolkit.org/et-docs/ET_Workshop_Fall_2011_Summary_Cactus
 **
https://docs.einsteintoolkit.org/et-docs/ET_Workshop_Fall_2011_Summary_ET
 ** https://docs.einsteintoolkit.org/et-docs/ET_Workshop_Fall_2011

misc:
 * maintainers please look at (large number) of tickets up for review
 * Kristen Boydstun at Caltech has written a Con2Prim routine using
OpenCL which runs on a GPU and finds a 2x speedup (incl. data transfer)
for about 10,000 zones and more for larger grids
 * will include Christian Reisswig's SphericalSlice in ET
 * propose to include GT's Outflow thorn in ET

MHD:
 * Roland implemented unigrid, cell-centered constraint transport in
GRHydro (which is what WhiskyMHD uses, with help from Bruno Giacomazzo)
 * Tanja mostly implemented the algebraic gauge vector potential method
with vector potential at the centre (also what WhiskyMHD uses), held up
by EOS_Omni fixes


Yours,
Roland

-- 
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