BDDC: cellwise subdomains, matfree MatIS, and user-defined primal vertices #4757
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connorjward
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pbrubeck
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Dec 12, 2025
pbrubeck
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Dec 12, 2025
…roject/firedrake into pbrubeck/bddc-primal-vertices
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Description
This PR adds new features for BDDC.
-bddc_cellwiseenables cellwise subdomains.-bddc_matfreeenables a matfree MatIS to be used for the interior solver.appctx["primal_markers"].