Manuel Valera <[email protected]> writes: > Awesome Matt and Jed, > > The GCR is used because the matrix is not invertible and because this was > the algorithm that the previous library used, > > The Preconditioned im aiming to use is multigrid, i thought i configured > the hypre-boomerAmg solver for this, but i agree in that it doesn't show in > the log anywhere, how can i be sure is being used ? i sent -ksp_view log > before in this thread
Did you run with -pc_type hypre? > I had a problem with the matrix block sizes so i couldn't make the petsc > native multigrid solver to work, What block sizes? If the only variable is pressure, the block size would be 1 (default). > This is a nonhidrostatic pressure solver, it is an elliptic problem so > multigrid is a must, Yes, multigrid should work well.
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