Matrix-based adjoint is inaccurate with overset meshes
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- Dominant language
- Fortran
- Stars
- 332
- Forks
- 124
- PR merge metrics
- No merged PRs in 30d
Description
Description
The matrix-based derivative routines do not fully account for overset connectivities. This results in inaccurate gradients if using the matrix-based adjoint with overset meshes. This also affects the accuracy of the preconditioner used in the matrix-free adjoint, which could be detrimental for convergence.
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First steps
- Read the whole issue, then the project's contributing guide.
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- Fork the repository and make your change on a branch.
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Research direction
No files, tests, or entry points are named. Start by tracing the matrix-based derivative routines and their handling of overset connectivities, then examine how the resulting preconditioner is used by the matrix-free adjoint. Done means accurate gradients and an accurate preconditioner for overset meshes.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- fortran
- Domain
- hpc
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 25/100