ASPECT untagged tmp

We are pleased to announce the release of ASPECT 2.0.1. ASPECT is the Advanced Solver for Problems in Earth's ConvecTion. It uses modern numerical methods such as adaptive mesh refinement, multigrid, and a modular software design to provide a fast, flexible, and extensible mantle convection solver. ASPECT is available from

               https://aspect.geodynamics.org/

and the release is available from

    https://github.com/geodynamics/aspect/releases/tag/v2.0.1

This release is a bugfix release for 2.0.0 and includes the following fixes:

• Fixed: The 'compositional heating' heating plugin had a parameter 'Use compositional field for heat production averaging' that was used inconsistently with its description. Its first entry did not correspond to the background field, but to the first compositional field, and the last value was ignored. This is fixed now, the first entry is used for the background field, and all following values determine whether to include the corresponding compositional fields.
• Fixed: The 'depth dependent' material model did not properly initialize the material model it uses as a base model. This caused crashes if the base model requires an initialization (such as the 'steinberger' material model). This is fixed now by properly initializing the base model.
• Fixed: The advection assembler for DG elements was not thread-safe, which led to wrong results or crashes if a discontinuous temperature or composition discretization was combined with multithreading.
• Disabled: The particle functionality was not tested when combined with a free surface boundary, and this combination is currently not supported. This limitation is now made clear by failing for such setups with a descriptive error message.

Wolfgang Bangerth, Juliane Dannberg, Rene Gassmoeller, Timo Heister, Jacqueline Austermann, Menno Fraters, Anne Glerum, John Naliboff, and many other contributors.