In this release:

• Added an additional N_Vector implementation for Tpetra vector from Trilinos library (user docs and examples are updated to reflect this)
• Fixed a bug where a nonlinear solver object could be freed twice in some use cases
• Fixed a bug in ARKodeButcherTable_Write when printing a Butcher table without an embedding
• Removed EXAMPLES_ENABLE_RAJA CMake option

Important notes:

• The implementation header files (e.g., arkode_impl.h) are no longer installed. Users who are directly manipulating package memory structures will need to update their code to use the package’s public API.
• Python is no longer required to run make test and make test_install.

Learn more:

• SUNDIALS v4.1.0 release notes
• The complete SUNDIALS release history
• Downloads via the SUNDIALS website and SUNDIALS GitHub repo