Dario Isola <[email protected]> writes: > Dear all, > > I am investigating the use of hypre+petsc. I was able to successfully > configure, install, compile petsc 3.3 with the external package for hypre. > > I tried to run it with the following options > > -pc_type hypre -pc_type_hypre pilut -ksp_type richardson > > and, although he did not complain, it does not solve the system either.
There is no reason pilut (which is deprecated; Hypre recommends using euclid) can be expected to create a contractive Richardson iteration. You should probably use Krylov (perhaps GMRES, the default), which will also fix the scaling. Use -ksp_monitor_true_residual -ksp_converged_reason while debugging/tuning the solver. > To what extent is hypre supported by petsc? More specifically, what kind > of matrices? I am using a *baij*//matrix. AIJ and BAIJ work with Hypre.
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