[aspect-devel] meeting notes

[Lorraine Hwang]

Hi Timo,

Do you want to use the wiki to post meeting summaries:

https://wiki.geodynamics.org/software:aspect:user_group_agenda?&#next_meeting <https://wiki.geodynamics.org/software:aspect:user_group_agenda?&#next_meeting>

?

Best,
Lorraine

***************************
Lorraine Hwang, PhD
Associate Director, CIG
530.752.3656

> On Mar 30, 2015, at 10:05 AM, Timo Heister <heister at clemson.edu> wrote:
> 
> Hey all,
> 
> here is a quick summary of today's meeting:
> 
> - For these meetings in general:
>  - no pre-planned topics, but sending questions to Timo/Wolfgang/Mailing list
>    before hand is helpful
>  - reporting what you are currently working on / struggling with
> 
> - free surface bugs? (Cedric):
>  - please report problems (and send simple test cases)
>  - Ian needs to fix some bugs
>  - not tested in 3d, not tested with new manifold description
>  - free surface computations can not use higher order mappings/etc. and need
>    very fine mesh on surface to begin with
> 
> - Bug with grouping vtk output? (Scott):
>  - there was a bug with intel MPI and MPI I/O that is used to group output
>    files (should be fixed, though)
>  - if it is still broken with newest development version, please report error
>    messages
>  - for now: disable grouping (only necessary if you use a large number of
>    CPUs)
> 
> - Solid body rotation:
>  - there is a feature to do that: see "Remove nullspace" in the manual and
>    cookbooks/future/
> 
> - Please explain manifolds:
>  - Timo explained manifold descriptions in detail (all faces in interior and
>    on surface are represented using higher order polynomials in the
>    computation)
>  - vtk output is only a linear approximation, nothing we can do about it
>  - this will create triangle shaped holes near hanging nodes in the output
>    when using adaptive refinement
>  - We can implement refining into many more patches for the output (very
>    costly for high resolution)
>  - Another option: move hanging vertices back onto surfaces for output
>    (hackathon topic)
> 
> - tracer status:
>  - Rene is working on attaching data (->hackathon)
>  - Gerry's student has some work done. Instead of preparing a finished pull
>    request (difficult right now), we should try to share the current state,
>    so we can take a look before the hackathon.
> 
> - How to output stress (Sarah):
>  - not done yet, but easy enough to implement (hackathon topic)
>  - full tensor vs. only norm? maybe both?
>  - => Sarah creates issue on github
> 
> - thanks for your participation and all your questions!
> 
> - next meeting: April 20th, 9am
> 
> -- 
> Timo Heister
> http://www.math.clemson.edu/~heister/
> _______________________________________________
> Aspect-devel mailing list
> Aspect-devel at geodynamics.org
> http://lists.geodynamics.org/cgi-bin/mailman/listinfo/aspect-devel

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