[Dune] Parallel grid partitioning

[Oliver Sander]

Hi Nagaiah,
as far as I know there are serious benchmarks that compare the different
grids.  One would indeed expect that ALUGrid is faster than UGGrid, because
it doesn't have the overhead from hybrid grids, and because the ALUGrid
maintainers care about speed a lot.  I would expect that Robert knows
most about the subject.
cheers,
Oliver

>
> 2) second issue about comparison sequential run cpu times for the same
> problem using UG and ALU: In this case using UGGRID is about twice
> faster than using ALUGRID.
> Even I can see a similar behavior for the nonoverlappingsinglephaseflow
> problem in
> dune-pdelab-howto/src/convection-diffusion.
>
> I am quite surprised why ALUGRID is 50% slower than UG for pdelab sub
> routines???
> did I make a mistake during the compilation (I used -DNDEBUG flag and
> -O3 during the ALUGRID and DUNE compilation) or did you observe the
> similar behavior?
>
> Thank you in advance.
>
> Best Regards
> Nagaiah
>
>
>
>
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