[Users] Einstein Toolkit Meeting Reminder

[Frank Loeffler]

Minutes for this week:

Present were: Erik, Frank, Ian, Steven, Vassili and Yosef.

Some issues with the last release will be backported, all of which are 
slight changes to machine options in simfactory, see ticket
https://trac.einsteintoolkit.org/ticket/1997
After those have been backported, a new release tag will be generated 
(but as with all tags, should not be used for checkouts; pull within the 
simfactory repository instead).

PITTNUllCode/SphericalHarmonicRecon apparently uses functions only 
available to the HDF5 version 1.8 API, while the rest of the toolkit so 
far only required version 1.6. It was agreed that requiring version 1.8 
for the toolkit would be the best solution, as this has now been around 
for quite a while, and should be supported on almost all machines. Where 
it might not yet be supported, the bundled version can be used.

The McLachlan constraint test failures with some versions of the Intel 
compilers are still an unsolved issue.

The piraha_everywhere branch will be merged with master very soon.

Erik proposed to move the calculation of the RHS to PostStep. While this 
would change scheduling, this change should be transparent to most 
thorns. Exceptions are infrastructure thorns like Poison, or possibly 
thorns that don't use MoL in the intended way (but we don't know of any 
such thorns).

The creation of a very brief McLachlan gauge condition cheat sheet was 
discussed, to be able to point to that in case of questions about the 
meaning of each parameter, or to prevent those questions in the first 
place. However, the general consensus seems to be that a cleanup should 
be in-order first. Volunteers for this are welcome.

Now is the time to make larger changes to the Einstein Toolkit, so 
expect possible breakages of the development version. Don't use it for 
production.

This is also the time to think about release goals for the spring 
release. Please collect some thoughts, and share them at the next 
Einstein Toolkit meeting. We do want to avoid duplication of effort.

Unless otherwise announced, there will be *no Einstein Toolkit meeting 
next week*. The next call will be on Jan 23, at the usual time.

Happy new year, Frank

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