> I wouldn't even describe my case as problematic.  The partitioning works
> fine, it just struck me as unusual.  My only thought would be to
> pre-partition the coarse mesh using, e.g., METIS, and then perform a
> Cuthill-McKee ordering within the partitions.  Are there any continuity
> requirements for the space filling curve, or can we rearrange coarse cells
> arbitrarily?

We can arrange them as we want. But pre-partitioning with METIS doesn't work 
because different coarse mesh cells will be refined differently, and so the 
coarse-mesh partitions will be wildly ill-partitioned once you adaptively 
refine.

Best
 W.

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Wolfgang Bangerth                email:            [email protected]
                                 www: http://www.math.tamu.edu/~bangerth/
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