On Sun, May 21, 2017 at 11:26 AM, Franck Houssen <[email protected]>
wrote:
> Using PETSc MatIS, how to matmult a global IS matrix and a global vector ?
> Example is attached : I don't get what I expect that is a vector such that
> proc0 = [1, 2] and proc1 = [2, 1]
>
1) I think the global size of your matrix is wrong. You seem to want 3, not
4
2) Global vectors have a non-overlapping row partition. You might be
thinking of local vectors
Thanks,
Matt
> Franck
>
--
What most experimenters take for granted before they begin their
experiments is infinitely more interesting than any results to which their
experiments lead.
-- Norbert Wiener
http://www.caam.rice.edu/~mk51/
