On Tue, Feb 14, 2017 at 2:46 PM, Gideon Simpson <[email protected]>
wrote:
> Is there a clever way to handle a prefix (cumulative) sum in petsc? I
> think I can see how to do with using some underlying MPI, but I was
> wondering if there were some built in routines that could be useful.
>
It is one MPI call (MPI_Scan), but you could do it by assigning sizes to a
PetscLayout (which is how I have done it several places).
Thanks,
Matt
> -gideon
>
>
--
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
