On Tue, Jun 21, 2011 at 18:56, Aron Ahmadia <aron.ahmadia at kaust.edu.sa>wrote:
> PETSc could also just provide a VecReduce and VecReduceStride operation, > which might simplify the programming effort a bit. That would be neat, especially if it used MPI_Op for the reduction. You would need MPI-2.2 to have MPI_Reduce_local() for user-defined operations, but it would be more flexible and less code than the current approach. -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.mcs.anl.gov/pipermail/petsc-dev/attachments/20110621/d207946a/attachment.html>
