[Users] Meeting Minutes

[Roland Haas]

Present: Frank, Roland, Peter, Steve, Yosef, Zach, Philipp

current release bugfixes:
* Frank will create v1 tags
* will update the release tarball
* backported fixes are: #1499 #1504
* possibly backport for to 1512

GRHydro changes:
* lots of changes since US Thanksgiving. Large parts of code ported to
C++ from F90 (often by copying routines and translating the language).
* new code uses template arguments for boolean/enum parameters inside of
innermost loop
* considerable speedup for ppm, hlle and prim2con routines
* increases object size due to number of template instantiations
* hidden behind parameter GRHydro::use_cxx_code
* will propose to push into svn repository for testing/compiling
* separate call by Roland and Frank and whoever is interested to review code
* transition code to new C++ routines over the next couple releases.
Usual procedure: add code  in next release but do not make default, make
default and deprecate old code in next to next release, move old code
into archive after that
* verify that published results can still be run with new code
* further planned changes: reconstruct pressure instead of eps (seem to
behave better when a contact discontinuity is present)

EOS_Omni changes:
* rewrite of nuclear EOS backend
* much faster
* internal changes, no externally visible change

IllinoisGRMHD:
* progress made checking for regressions, now agrees with previous
Illinois code for 100 steps when using AMR and no symmetries
* will be proposed for inclusion
* Philipp and Zach to add edge centered prolongation operators for
magnetic vector potentials
* code review once code is deemed ready (requirements for inclusion:
http://einsteintoolkit.org/documentation/contribute/)
* code repository is at:
https://svn.einsteintoolkit.org/cactus/EinsteinEvolve/IllinoisGRMHD

Yours,
Roland













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