--- In Boost-Users@y..., Walter Bowen <yg-boost-users@m...> wrote: <snip comparison performance ublas and Roguewave math.h++ > I find it surprising that ublas can outperform math++. Nevertheless, I think that, once you're handling matrices larger than 10x10 you should consider calling BLAS (preferably vendor-tuned BLAS or ATLAS). During the review, there was some discussion on the performance. Martin Weiser for instance made this graph : http://www.zib.de/weiser/ublas_review.gif. Of course you need to take into account that much emphasis has been on the interface, I figure performance optimisation will now (after the review) be looked at in greater detail (I can't speak for Joerg and Mathias of course but I figure they're on vacation so I wanted to give you this feedback already anyhow). Also, you can use the BLAS-bindings for ublas that are in the sandbox. I've only added a few BLAS-calls up till now but will extend this to cover all of BLAS in the future. I use these bindings myself in my projects and this provides me the rich functionality of ublas with the performance of ATLAS. toon