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On Tue, Jul 22, 2008 at 05:05:45PM +0200, Martin Sandve Alnæs wrote: > UFC 1.1 already has a function for tabulating the number of dofs > associated with each mesh entity, but I don't think FFC implements UFC > 1.1 completely yet. True. FFC does not yet implement tabulate_entity_dofs but it would be fairly easy to add. > Shouldn't this be all that's needed from FFC for > DOLFIN to compute/estimate the max non-zeroes per row? Sum the local > dimension of all elements and subtract the number of dofs for each > entity shared by neighbouring elements. How should this be done? It seems that to do this, we would need to compute all cell-cell connectivity which is fairly expensive. On the other hand, we need to compute it anyway to initialize edges and facets when there are dofs on those entities. -- Anders
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