I know that PETSc has hooks for Euclid but I discovered today that it does not support 64 bit indices, which many MOOSE applications need. This would probably be more appropriate for a hypre support forum (does anyone know if such a forum exists other than opening GitHub issues?), but does anyone here know what the difference between hypre-ILU and hypre-Euclid are? From the docs it seems they are both supposed to be parallel ILU solvers.
If hypre-ILU worked with 64 bit indices (I can probably check this sifting through the sources), then I would probably add hooks for it in PETSc (AFAICT those don't exist at present).
