[petsc-users] Parallel Incomplete Choleski Factorization

Hong Zhang hzhang at mcs.anl.gov
Fri Jul 13 14:14:22 CDT 2012

Michele :

> I need to use the ICC factorization as preconditioner, but I noticed that
> no parallel version is supported.
> Is that correct?

> If so, is there a work around, like building  the preconditioner "by hand"
> by using PETSc functions?
You may try block jacobi with icc in the blocks  '-ksp_type cg -pc_type
bjacobi -sub_pc_type icc'


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