# ASPECT Newsletter #128

**URL:** <https://community.geodynamics.org/t/aspect-newsletter-128/1874>\
**Category:** ASPECT\
**Created:** [June 3, 2021, 4:00pm UTC](https://community.geodynamics.org/t/aspect-newsletter-128/1874 "2021-06-03T16:00:12Z")\
**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:** [June 3, 2021, 4:00pm UTC](https://community.geodynamics.org/t/aspect-newsletter-128/1874/1 "2021-06-03T16:00:12Z")

</div>

Hello everyone!

This is ASPECT newsletter #128.  
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:

[#4052](https://github.com/geodynamics/aspect/pull/4052): [WIP] Add github test action (implemented by [gassmoeller](https://github.com/gassmoeller))  
[#4051](https://github.com/geodynamics/aspect/pull/4051): Shrink StructuredData. (implemented by [bangerth](https://github.com/bangerth))  
[#4050](https://github.com/geodynamics/aspect/pull/4050): Avoid the use of deprecated functions for iterating over local vector elements. (implemented by [bangerth](https://github.com/bangerth); reviewed by [gassmoeller](https://github.com/gassmoeller))  
[#4049](https://github.com/geodynamics/aspect/pull/4049): Avoid a deprecated version of MappingQCache::initialize(). (implemented by [bangerth](https://github.com/bangerth); reviewed by [MFraters](https://github.com/MFraters))  
[#4048](https://github.com/geodynamics/aspect/pull/4048): Avoid the use of TriaAccessor::number\_of\_children(). (implemented by [bangerth](https://github.com/bangerth); reviewed by [MFraters](https://github.com/MFraters))  
[#4047](https://github.com/geodynamics/aspect/pull/4047): Avoid the use of Threads::Thread. (implemented by [bangerth](https://github.com/bangerth); reviewed by [tjhei](https://github.com/tjhei))  
[#4045](https://github.com/geodynamics/aspect/pull/4045): add dependency info to readme (implemented by [tjhei](https://github.com/tjhei); reviewed by [bangerth](https://github.com/bangerth))  
[#4044](https://github.com/geodynamics/aspect/pull/4044): Add an explanatory sentence to the ‘compositing’ material model. (implemented by [bangerth](https://github.com/bangerth))  
[#4043](https://github.com/geodynamics/aspect/pull/4043): Remove duplicated calls to initialize (implemented by [gassmoeller](https://github.com/gassmoeller); reviewed by [tjhei](https://github.com/tjhei))  
[#4042](https://github.com/geodynamics/aspect/pull/4042): fix lateral viscosity variations (implemented by [jdannberg](https://github.com/jdannberg); reviewed by [gassmoeller](https://github.com/gassmoeller))  
[#4036](https://github.com/geodynamics/aspect/pull/4036): Add a fallback interpolator to bilinear least squares (implemented by [gassmoeller](https://github.com/gassmoeller); reviewed by [bangerth](https://github.com/bangerth))

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

[#4046](https://github.com/geodynamics/aspect/issues/4046) ASPECT hangs right after checkpoint when using \>1 node (opened)  
[#4031](https://github.com/geodynamics/aspect/issues/4031) cmake documentation? (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!

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/).