[petsc-users] Seq vs MPI convergence

Hugo Gagnon opensource.petsc at user.fastmail.fm
Sun Apr 14 17:03:31 CDT 2013


I have a problem that converges fine in sequential mode but diverges in MPI (other problems seem to converge fine for both modes).  I am no expert in parallel solvers but, is this something I should expect?  I'm using BiCGSTAB with BJACOBI ILU(3).  Perhaps I'm overseeing some parameters that could improve my convergences?

  Hugo Gagnon

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