Hello I just want to make sure that I understand the right thing, in the manual page of PCFieldSplitSetSchurFactType: http://www.mcs.anl.gov/petsc/petsc-current/docs/manualpages/PC/PCFieldSplitSetSchurFactType.html
The "upper" option uses DU from the full factorization. If I understand correctly, the ksp must be used with right preconditioning, because A P^-1 = (LDU) * (DU)^(-1) = L. If that was the case, should the manual put this information to be more clear? Thanks Giang
