[petsc-users] (no subject)

[Klaij, Christiaan]

>> [0]PETSC ERROR: Unhandled case, must have at least two fields!
>
>
>You can use PCFieldSplitSetIS(). The implementation could check whether a
>MatNest is being used and automatically set the splits if it is, but you
>would have to call PCFieldSplitSetIS() later when you wanted to assemble
>into an AIJ format, so I'm hesitant to pick it up automatically. Just call
>the function for now.

Then what would be the best way to create the IS in this case?
Can it somehow be deduced from the separate blocks?


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