# PyLith v3.0.3 released

**URL:** <https://community.geodynamics.org/t/pylith-v3-0-3-released/2632>\
**Category:** PyLith\
**Created:** [October 18, 2022, 5:05pm UTC](https://community.geodynamics.org/t/pylith-v3-0-3-released/2632 "2022-10-18T17:05:21Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![baagaard](https://yyz2.discourse-cdn.com/flex036/user_avatar/community.geodynamics.org/baagaard/32/615_2.png) [@baagaard](https://community.geodynamics.org/u/baagaard)\
**Post date:** [October 18, 2022, 5:05pm UTC](https://community.geodynamics.org/t/pylith-v3-0-3-released/2632/1 "2022-10-18T17:05:21Z")

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# PyLith v3.0.3 now available

I am pleased to announce the release of PyLith 3.0.3, a finite-element code designed to solve dynamic elastic problems and quasi-static viscoelastic problems in tectonic deformation.

You can download the source code and binaries from  
[https://geodynamics.org/resources/pylith](https://geodynamics.org/resources/pylith)

Documentation  
[https://pylith.readthedocs.org/en/v3.0.3](https://pylith.readthedocs.org/en/v3.0.3)

## Release Notes

This is a bug fix release with no new features or changes to the user interface.

- Fixed duplicate integration of fault terms if a fault had one material on one side and multiple materials on the other side.
- Fixed bugs related to running in parallel.
  - Creating constraints on buried fault edges failed for some mesh distribution cases.
  - Green’s function problems did not manage fault impulses on multiple processes.
  - Creating a point mesh for `OutputSolnPoints` failed when running in parallel.
  - PetscSF inconsistencies generated errors at various times when running in parallel.

- Update to PETSc 3.18.0.

**Note** : We now use PETSc routines to write the HDF5 files.  
As a result, there is one change to the layout: `topology/cells` is now `viz/topology/cells`.  
The corresponding Xdmf files reflect this change.

### Binary packages

- Update to Python 3.10.6.
- Use `gmforker` process manager with MPICH to avoid localhost name issues.
- This release include a macOS arm64 binary

### Known issues

- The default PETSc options provide a computationally expensive preconditioner when solving incompressible elasticity problems in parallel. We expect to have a more optimal preconditioner in the next release.

## Contributors

- Brad Aagaard
- Matthew Knepley
- Charles Williams