[petsc-users] The parallel preconditioner

[Jed Brown]

huaibao zhang <huaibao.zhang at gmail.com> writes:

> Hello there,
>
> I have been confused of the extent of the available preconditioners in PETSc for a while. Here are the lists I got from one slide of a lecture notes saying
>
> Block Jacobi,
> Jacobi,
> Overlapping Additive Schwarz,
> ICC, ILU (sequential only)
> ILU(K), LU(direct solver, sequential only)
> sor
> etc.
>
>
> But in some other sources, only LU is highlighted with "sequential
> only". 

-pc_type lu -pc_factor_mat_solver_package superlu_dist (or "mumps") will
 give you a parallel solver.

> Which one is correct? I am using MATCreateAIJ to construct my A. Which
> preconditioner is available to me? By the way, I tested asm, ilu, icc,
> and they all failed.

"failed" is not sufficiently descriptive.

It would also help to know what sort of problem you're solving.
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