> I should add a MatNestGetISs() so you can get out the automatically-created > ISs. They will have the structure described below. If you want to work with > the released version, you should create the ISs yourself.
As a user, having MatNestGetISs would be most convenient. > A has a contigous distribution, so the ISs must respect that. Did you try > creating the index sets described above? Please explain "something's wrong". Finally I understand the relation between the nesting and the index sets. After replacing my incorrect ISs with the correct ones, everything's fine (no more [0]PETSC ERROR: Arguments are incompatible! [0]PETSC ERROR: Could not find index set!). Thanks a lot for your help, Jed, I really appreciate it. dr. ir. Christiaan Klaij CFD Researcher Research & Development E mailto:C.Klaij at marin.nl T +31 317 49 33 44 MARIN 2, Haagsteeg, P.O. Box 28, 6700 AA Wageningen, The Netherlands T +31 317 49 39 11, F +31 317 49 32 45, I www.marin.nl
