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Add tridiagonal solvers #194

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mwarusz wants to merge 2 commits into E3SM-Project:develop from mwarusz:omega/tridiagonal

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mwarusz commented Jan 24, 2025 •

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This draft PR adds four solvers for tridiagonal systems based on the following algorithms:

Thomas algorithm for general tridiagonal systems on CPUs
PCR algorithm for general tridiagonal systems on GPUs
Thomas algorithm for diffusion systems with improved stability properties on CPUs
PCR algorithm for diffusion systems with improved stability properties on GPUs

together with tests.

See the design doc PR (#166) for more information.

Checklist

Documentation:
- Design document has been generated and added to the docs
- User's Guide has been updated
- Developer's Guide has been updated
- Documentation has been built locally and changes look as expected
Testing
- CTest unit tests for new features have been added per the approved design.
- Unit tests have passed. Please provide a relevant CDash build entry for verification.

mwarusz added 2 commits

January 23, 2025 16:29


          Add tridiagonal solvers

469f842


          Add tridiagonal test

mwarusz mentioned this pull request

Add tridiagonal solver design document #166

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