[petsc-users] Difference between Block Jacobi and ILU?

[Justin Chang]

Hi all,

What exactly is the difference between these two preconditioners? When I
use them to solve a Galerkin finite element poisson problem, I get the
exact same performance (iterations, wall-clock time, etc). Only thing is I
can't seem to use ILU in parallel though.

Thanks,
Justin
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