dolfin team mailing list archive

[Anders Logg <logg@xxxxxxxxx>]

On Mon, Aug 11, 2008 at 10:32:23AM +0200, Dag Lindbo wrote:
> Hello! (I've been out of e-mail range for a week)
> 
> I've posted some results on the wiki (and I actually have MTL4 :-) )
> where I just show total assembly times with and without optimization
> turned on. MTL4 responds quite well to -O3 (unlike uBLAS).
> 
> As far as the MTL4 backend goes, I have implemented and tested almost
> all the operators and member functions. We are running into some quirks
> with namespaces in MTL4 which Peter G is going to sort out. Also, there
> is a bug somewhere in the version of the backend currently in place --
> so please don't use it without manually initializing matrix dimensions.
> 
> I will sort this out in a day or two and then have a bundle ready that
> finalizes the MTL4 backend. The performance results have been
> encouraging enough to keep me (and Garth) motivated to get this backend
> ready for "real" use.
> 
> /Dag

Good. I've updated my results (this time with MTL4 actually installed)
and MTL4 does very good.

The problem is it's cheating. Other backends would also do much better
if they were allowed to guess the number of nonzeros and guess right.

-- 
Anders

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