[Dune] cached geometry grid

[Marco Cisternino]

Hi duners,
I have a small problem about the writing of the VTK files when I use my 
geometry grid.
Everything works fine, the problem is a matter of performance.
During the writing procedure the writer has to call the evaluate method 
of my discrete function, which is a Q3 polynomial in 3D (192 
coefficient), and with millions of elements and few processors, this 
could be very long in time.
I wonder if introducing a persistent container as cache for my discrete 
function (for the nodes), updating it any time I call adapt on the grid 
and using it as return for the evaluate method I can save an important 
amount of time during writing. By this way, I would compute the 
deformation of the host grid only one time after the AMR step. Am I right?

Thanks.

Marco.


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Marco Cisternino, Ph.D.
OPTIMAD Engineering s.r.l.
Via Giacinto Collegno 18
10143 Torino - Italy
www.optimad.it
marco.cisternino at optimad.it
+39 011 19719782
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