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Fix interior facet permutations #3009
Fix interior facet permutations #3009
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…zil/dolfinx into anzil/fix-interior-facet-permutations
Thanks for finding and fixing this subtle bug! There is a patch coming in with the aim of removing PETSc solvers from the tests; can you wait for that to come in and then update? |
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Update tests to not use PETSc solves.
This is related to PETSc's block assembler, so this test needs to be made optional based on PETSc's availability when we get there.
This PR is joint work with @michalhabera and supersedes #3000.
Non-symmetric assembled operators were observed for bilinear forms that combine e.g. Nedelec and Regge elements when interior facet integrals were present in the form.
This PR fixes post dof transformation during sub-block matrix/vector assembly for interior facet integrals.