# ASPECT Newsletter #92

**URL:** <https://community.geodynamics.org/t/aspect-newsletter-92/907>\
**Category:** ASPECT\
**Created:** [November 18, 2019, 7:00pm UTC](https://community.geodynamics.org/t/aspect-newsletter-92/907 "2019-11-18T19:00:14Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![rgassmoeller](https://yyz2.discourse-cdn.com/flex036/user_avatar/community.geodynamics.org/rgassmoeller/32/49_2.png) [@rgassmoeller](https://community.geodynamics.org/u/rgassmoeller)\
**Post date:** [November 18, 2019, 7:00pm UTC](https://community.geodynamics.org/t/aspect-newsletter-92/907/1 "2019-11-18T19:00:14Z")

</div>

Hello everyone!

```
       This is ASPECT newsletter #92.

```

It automatically reports recently merged features and discussions about the ASPECT mantle convection code.

Below you find a list of recently proposed or merged features:

[#3293](https://github.com/geodynamics/aspect/pull/3293): Add missing benchmark to check script (proposed by [gassmoeller](https://github.com/gassmoeller); merged)  
[#3292](https://github.com/geodynamics/aspect/pull/3292): Reorder viscoelastic-plastic viscosity calculation (proposed by [naliboff](https://github.com/naliboff))  
[#3291](https://github.com/geodynamics/aspect/pull/3291): reduce storage for matrix-free gmg (proposed by [tcclevenger](https://github.com/tcclevenger); merged)  
[#3289](https://github.com/geodynamics/aspect/pull/3289): Add a mass flux statistics for the depth average postprocessor. (proposed by [gassmoeller](https://github.com/gassmoeller); merged)  
[#3287](https://github.com/geodynamics/aspect/pull/3287): Allow multiple output formats for depth average postprocessor (proposed by [gassmoeller](https://github.com/gassmoeller); merged)  
[#3285](https://github.com/geodynamics/aspect/pull/3285): Remove duplicated headers (proposed by [gassmoeller](https://github.com/gassmoeller); merged)  
[#3284](https://github.com/geodynamics/aspect/pull/3284): Reduce memory consumption of unity build on tester (proposed by [gassmoeller](https://github.com/gassmoeller); merged)  
[#3283](https://github.com/geodynamics/aspect/pull/3283): remove an unused variable (proposed by [tjhei](https://github.com/tjhei); merged)  
[#3282](https://github.com/geodynamics/aspect/pull/3282): remove constraint consistency check (proposed by [tjhei](https://github.com/tjhei); merged)  
[#3281](https://github.com/geodynamics/aspect/pull/3281): doc: remove incorrect @copydoc link (proposed by [tjhei](https://github.com/tjhei); merged)  
[#3265](https://github.com/geodynamics/aspect/pull/3265): Mesh def initial topo (proposed by [anne-glerum](https://github.com/anne-glerum); merged)  
[#3257](https://github.com/geodynamics/aspect/pull/3257): add drucker prager rheology module (proposed by [naliboff](https://github.com/naliboff); merged)  
[#3153](https://github.com/geodynamics/aspect/pull/3153): Rayleigh-Taylor Instability Benchmark (proposed by [cedrict](https://github.com/cedrict); merged)

And this is a list of recently opened or closed discussions:

[#3290](https://github.com/geodynamics/aspect/issues/3290) parsing parameters for phase entry, should we allow empty entry in Utilities::parse\_map\_to\_double\_array (opened)  
[#3288](https://github.com/geodynamics/aspect/issues/3288) How large the used memory increases when using larger “GMRES solver restart length” (opened)  
[#3286](https://github.com/geodynamics/aspect/issues/3286) Implement phase change for rheology (opened and closed)

A list of all major changes since the last release can be found at [this website](https://aspect.geodynamics.org/doc/doxygen/changes_current.html) .

Thanks for being part of the community!

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Let us know about questions, problems, bugs or just share your experience by visting our [forum](https://community.geodynamics.org/c/aspect), or by opening issues or pull requests on [Github](https://www.github.com/geodynamics/aspect).
Additional information can be found at our [official website](https://aspect.geodynamics.org/), and CIG's [ASPECT website](https://geodynamics.org/cig/software/aspect/).
```