[Dune] Timings for the changes in dune-common r4695

[Markus Blatt]

Hi,

it seems to me, that the template metaprogramms were useful. At least
for small blocksizes.

I have attached timings for solving a laplacian on a structured 2d
250x250 grid with AMG (with 2 steps jacobi pre and postsmoothing) as a
preconditioner to CG. (BS is the blocksize, T the time for solving,
TIT the time for one iteration). The code was compiled with g++-4.0
and -O3 -DNDEBUG options.

It seems to be that at least for small blocksizes there is a
difference. Probably one should test also bigger block sizes, but
right now my time is limited.

Cheers,

Markus
-- 
DUNE -- The Distributed And Unified Numerics Environment 
<http://www.dune-project.org>
-------------- next part --------------
      rev 4694    rev 4695
BS  T     TIT     T     TIT
1    4.49 0.0510   4.62 0.0526
2   12.44 0.141   20.47 0.233
3   33.14 0.376   44.33 0.504
4   51.52 0.585   68.92 0.783
5   98.43 1.119  106.26 1.207