On Jan 12, 2015, at 10:40 , Ian Hinder ian.hinder@aei.mpg.de wrote:

On 12 Jan 2015, at 13:43, Erik Schnetter schnetter@gmail.com wrote:

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On Jan 11, 2015, at 22:10 , Frank Loeffler knarf@cct.lsu.edu wrote:

...

Hi

Please consider joining the weekly Einstein Toolkit phone call at 10 am US central time on Mondays. As usual, you can find instructions how to join on the following web site:

http://einsteintoolkit.org/community/support/

In short: the number is (+1) 225-578-4942 and the conference id is 118682#.

This being the first meeting in 2015 we should take a step back and discuss what we want the ET to be one year from now, and how this can be achieved.

Of course, other topics are as always welcome.

I would like to discuss:

• having a type that is CCTK_INT8 by default on 64-bit platforms
• adding a new type CCTK_INT16
• merging the McLachlan rewrite branch

These are items for today, they are not goals for the year.

-erik

...

I may be late in calling in.

I would add the following potential goals for the next year:

• Improving timelevel handling and making Carpet more flexible wrt time prolongation orders etc (https://trac.einsteintoolkit.org/ticket/620)

• Dependency-based scheduling, to avoid errors and allow potential parallelisation

• Output of simulation metadata in a standardised form (i.e. avoiding the need to parse parameter files) (https://trac.einsteintoolkit.org/ticket/1370)

• Get tickets under control (https://trac.einsteintoolkit.org/ticket/1698)

  • We have a system for triaging tickets which seems to work (https://docs.einsteintoolkit.org/et-docs/Tickets), and have applied it to the most recent tickets. We need to apply it to the rest, and work out how to make sure that this is done in future.

• Make tests independent of number of processes, or run on the right number (https://trac.einsteintoolkit.org/ticket/1075, https://trac.einsteintoolkit.org/ticket/1230).

  • With some care, we now have all the required features to make Carpet 1D output be independent of the number of processes, and I started converting some of the tests a few weeks ago. This needs to be extended to all tests, and probably instructions added to the documentation for how to write a test such that it can be run on any number of processes.

-- Ian Hinder http://members.aei.mpg.de/ianhin

-- Erik Schnetter schnetter@gmail.com http://www.perimeterinstitute.ca/personal/eschnetter/

My email is as private as my paper mail. I therefore support encrypting and signing email messages. Get my PGP key from http://pgp.mit.edu/.

Hi all,

I have to teach on Mondays from 9:30AM--10:20AM (Central US time), so this semester, I will need to dial in a bit late to ET telecons (next Monday, MLK Day, is an exception).

I would like to add two items to the 2015 wish list, having to do with making it easier for IllinoisGRMHD to be used with the rest of the Toolkit: 1) Modify HydroBase so that staggered A-fields are supported. The best strategy will require that we consider how initial data thorns might be made compatible with staggered or unstaggered A-field, as well as B-field-only evolutions. 2) Incorporate staggered prolongation/restriction operators into Carpet.

-Zach

* * * Zachariah Etienne Assistant Professor of Mathematics West Virginia University

On Mon, Jan 12, 2015 at 12:12 PM, Frank Loeffler knarf@cct.lsu.edu wrote:

Present were: Erik, Ian, Steve, Frank, Peter, Barry, Josef, Roland, (problems with audio), and others I don't remember anymore (sorry, but they also didn't speak up)

We first talked about plans for 2015. Mentioned were:

• ET meeting in Europe, doodle poll about location and time
  • either in Italy (close to MG meeting) or Sweden (Micra)
  • either mid-July or mid-end August
• Improving timelevel handling and making Carpet more flexible wrt time prolongation orders etc (https://trac.einsteintoolkit.org/ticket/620)
• Dependency-based scheduling, to avoid errors and allow potential parallelization
• Make tests independent of number of processes, or run on the right number (https://trac.einsteintoolkit.org/ticket/1075, https://trac.einsteintoolkit.org/ticket/1230).
• Get tickets under control (https://trac.einsteintoolkit.org/ticket/1698)
• Adding some Hydro analysis tools used by Frank and the Parma group
• Working on Chemora, adding to the ET eventually
• Getting some more interesting single-NS initial data into the ET
• Adding Llama. Since Llama is public now, and officially released there would need to be a chaperon.
• Including an elliptic solver

Specific tickets/issues mentioned were

• having a type that is CCTK_INT8 by default on 64-bit platforms Here the consensus seems to be that using CCTK_INT as platform-dependent type should be ok.
• Adding a new type CCTK_INT16
• Merging the McLachlan rewrite branch There is a wiki page about that:

https://docs.einsteintoolkit.org/et-docs/Rewrite_McLachlan If nobody objects this looks like to be happening soon.

• The Jenkins Server will move to the PI. Erik and Ian will coordinate on that, and Frank volunteered to help.
• McLachlan will move to bitbucket. The timeframe was not fixed, but is expected to be "soonish".

Frank

---

Users mailing list Users@einsteintoolkit.org http://lists.einsteintoolkit.org/mailman/listinfo/users

On 12 Jan 2015, at 18:12, Frank Loeffler knarf@cct.lsu.edu wrote:

Present were: Erik, Ian, Steve, Frank, Peter, Barry, Josef, Roland, (problems with audio), and others I don't remember anymore (sorry, but they also didn't speak up)

We first talked about plans for 2015. Mentioned were:

• Including an elliptic solver

To clarify, I meant including the CT_MultiLevel elliptic solver from the CosmoToolkit, as per https://trac.einsteintoolkit.org/ticket/1676. We just need to add an example to the gallery page, and then it can be added.