[petsc-users] ILU preconditioner hangs with some zero elements on the diagonal

2015-10-27 Thread Gary Rebt
Dear petsc-users,   While using the FEniCS package to Solve a simple Stokes' flow problem, I have run into problems with PETSc preconditioners. In particular, I would like to use ILU (no parallel version) along with GMRES to solve my linear system but the solver just hangs indefinitely at MatLUF

[petsc-users] ILU preconditioner hangs with some zero elements on the diagonal

2015-10-27 Thread Gary Rebt
Dear petsc-users,   While using the FEniCS package to Solve a simple Stokes' flow problem, I have run into problems with PETSc preconditioners. In particular, I would like to use ILU (no parallel version) along with GMRES to solve my linear system but the solver just hangs indefinitely at MatLUFa