On Fri, Nov 11, 2011 at 2:26 PM, TAY wee-beng <zonexo at gmail.com> wrote:
> Hi, > > I am currently using PETSc for my Fortran CFD code and I am manually > partitioning my Cartesian grids. So in 2D, it will be something like > u(1:size_x,jstart:jend), where the y component is partitioned into 2,4,8 > etc parts depending on the no. of processors. > > However, it seems that there are better ways to do it to get a more > balanced load. Do I use DMDA in PETSc to do it? I'm now using staggered > Cartesian grids for my u,v,p. Is there an example to construct a > Laplace/Poisson equation using DMDA? > Yes use DMDA. Look at SNES ex5 and ex50. > It is mentioned in the manual that DMMG infrastructure will be replaced in > the next release and we should not use it. Is this related to DMDA? > Only if you use multigrid. Matt > Yours sincerely, > > TAY wee-beng > > > -- 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-users/attachments/20111111/20c6e0a6/attachment.htm>
