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Subject: Re: [ublas] General (specialize)d optimized matrix product proposal
From: Gunter Winkler (guwi17_at_[hidden])
Date: 2010-03-22 17:45:53
Hello Jörn,
thanks for this patch. The matrix multiply definitely needs some
improvement.
Am Sunday 21 March 2010 schrieb Jörn Ungermann:
> Dear all!
>
> Abstract;
> The (lacking) performance of sparse-matrix products was quite often
> noted on this list.
> Currently there are several functions which implement matrix
> products. Each is efficient under certain conditions only and some of
> them are not even documented.
> I think it important for users to have one (near-)optimal function
> only. The attached file contains an improved axpy_prod that matches
> the performance of "prod", "axpy_prod" and "sparse_prod" and is
> thereby optimal for all matrix types (see table below).
I opened a new ticket to track the progress:
https://svn.boost.org/trac/boost/ticket/4033
@all: feel free to add comments to the ticket.
mfg
Gunter