Only rebuild the CirculantPC blocks when the reference state has changed #186
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JHopeCollins
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colinjcotter
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May 7, 2024
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The blocks of the circulant or jacobi preconditioners only need to be rebuilt when the reference state is updated. However by default, Firedrake will force the Jacobian and preconditioner to be rebuilt at every
LinearVariationalSolver.solvecall.We can prevent this by setting
constant_jacobian=Trueand explicitly telling the blocks when they need to rebuild.