[Bf-committers] How about adding boost uBLAS library to blender/extern?

Shaul Kedem shaul.kedem at gmail.com
Tue Jan 27 16:02:11 CET 2009

Thank you for the info benoit.

Can you please ask him how he debug the template on each platform?
what is his main dev platform?

On Tue, Jan 27, 2009 at 4:09 AM, Benoit Bolsee <benoit.bolsee at online.be> wrote:
> Regarding Eigen2, I received additional explanations from the main
> developper Benoit Jacob. It shows a nice commitment to future
> improvements:
>> it has automatic SIMD and cache friendly optimization
> Yup indeed :)
>> it provides out of the box SVD decomposition
> Indeed. The current SVD code, in Eigen 2.0, is taken from the public
> domain JAMA. It's decent but not a killer. My top priority right now is
> to get a much more SVD, written from scratch, in Eigen 2.1. In
> particular it will be extremely stable numerically, it should have
> efficient fixed-size specializations, and it should of course take full
> advantage of the Eigen framework. My motivation is that this is one of
> the most asked-for features.
> Eigen 2.0 will be released next week. Eigen 2.1 will be used heavily by
> KDE 4.3 so has to be released around June or July.
>>MSVC 2005 and up (MSVC 2008 for SSE
>>optimization), gcc 3.3 and up (gcc 4 for SIMD optimization), recent ICC
>>(9? 10?, 11?).
> GCC 4.2 for SIMD. For ICC, I don't know exactly because it's not me who
> tested it. There were at least successful reports with ICC 10.
>> However, current version is beta6,
> Yep, final release next week.
>>API is stable for dense matrices
> Mostly. In Eigen 2.0 we marked many parts as experimental to retain some
> freedom, although we will ensure 99.9% compatibility for our important
> users. If Blender uses Eigen we will work with you to minimize trouble.
> Our goal is to shed the experimentalness and extend the API stability
> guarantee to much more of Eigen for the 2.1 release around June.
>>it is already used by many projects
> Indeed new projects switch every week.
>> and available as a package in various
>>Linux distributions.
> Indeed, mostly thanks to KDE and KOffice depending on it.
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