[petsc-dev] strangness in Chebyshev estimate of eigenvalues

[Mark Adams]

>
>
>    What "global idea"? Even with something simple like DMDA the "global
> idea" of a variable depends on the number of processes, similarly if one is
> doing any kind of partitioner on the unknowns the ordering changes with the
> number of processors.
>
>


The point is that it is possible to have a process invariant test, as
opposed to impossible. PETSc's MIS is not invariant now anyway.  I don't
think about DMDA; the problems that I have experience with have a global
numbering that can be preserved if one wishes for debugging.
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