[petsc-users] matrix reordering

Barry Smith bsmith at mcs.anl.gov
Fri Oct 19 17:00:47 CDT 2012


     We've thought about adding this kind of support this over the years but always came to the conclusion that "the right way to do it" is during the mesh setup step.


On Oct 19, 2012, at 4:16 PM, Mohammad Mirzadeh <mirzadeh at gmail.com> wrote:

> Hi guys,
> Quick question. *After* the matrix is setup, is it possible to ask PETSc to renumber the nodes internally in the KSPSolve phase to minimize communications for MatMul inside the solver? Can I use the MatPartitioning object for this or is that only intended to partition the mesh as a pre-processing step?
> Thanks

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