Dear all, there is a way to access an arbitrary block of a parallel matrix? It should work also in the case where the block is owned by an other processor.
I have seen that you can use MatCreateRedundantMatrix() to copy the entire matrix in a processor, but this solution is not very efficient if I just need a (small) block of it. I have also tried to use MatGetSubMatrix() but does not seem to work. Thank you very much for any help, Pietro
