Hello, I am solving a pressure Poisson equation with KSP, where the initial guess, RHS and matrix are computed by functions that I've hooked into KSPSetComputeXXX. (I'm also using DMDA for my domain decomposition.)
For (single-phase|two-phase) I would like to (reuse|not reuse) the preconditioner. How do I specify that when using this way of setting the operator? Is it toggled by whether or not I call KSPSetOperators before each KSPSolve? (The manual does not mention KSPSetComputeXXX.) Regards, Åsmund
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