[petsc-dev] Refactoring PETSc Internal Communication

[Matthew Knepley]

Take a look at the changes in

  https://bitbucket.org/petsc/petsc/branch/knepley/fix-mat-zero-rows

I replace a bunch of messy MPI_ISend/IRecv() with a single PetscSF
operation. I think we can remove all internal non-collective MPI from
PETSc in favor of PetscSF.

This means it would be possible to optimize (since we can change
communication strategies), and much much simpler. I think our
goal should be elimination of all internal comm by the end of next year.

  Comments?

     Matt

-- 
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
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.mcs.anl.gov/pipermail/petsc-dev/attachments/20131101/0289e808/attachment.html>