I just saw that Florent prepares the patches going into 4.6. I wanted
to ask if someone has a little time to review this patch #9651.

Thanks and have a nice week, Christian

On Sep 22, 10:43 am, Christian Stump <[email protected]>
wrote:
> > I wonder if we can figure out why I was getting slower times for
> > the experiment I did.
>
> Can you double check that data as I redid the test and the differences
> didn't seem to be there:
>
> 8.85, 8.92 without the patch and
> 8.45, 8.49 with the patch.
>
> > Thus (if I understand you) rewriting the product_by_generator_on_basis
> > method in
> > iwahori_hecke_algebra.py might help.
>
> I played a little around this morning, and indeed one can reduce
> overhead inside in the product method for algebras_with_basis.
>
> But this still doesn't improve your computations on the Hecke algebra.
> The problem in there is that most of the time is taken by the
> product_on_basis method and the submethods called therein. The reduced
> word and the descent set is computed multiple times and simples are
> applied - that takes a while...
>
> To me it looks like the speed in there is not a question of general
> speed improvements for CFM or algebras_with_basis...
>
> Christian

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