|Re: [eigen] speed with g++-4.2|
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On Sunday 30 September 2007 16:24:08 Andre Krause wrote: > Benoît Jacob wrote: > > Hi List, > > > > Following Michael's post I upgraded to g++ 4.2.1 and I get results > > similar to his. In my small benchmark, the speed of eigen2 with g++-4.2 > > is 4x faster than eigen2 with g++-4.1, and 10% faster than tvmet with > > g++-4.2. > > > > Even better, this is with the latest svn revision in which the > > __restrict__'s have been removed. So it looks like we won't need to use > > restricted pointers, which is relieving. > > > > Cheers, > > Benoit > > just one word: AWESOME! keep on! > > maybe someone could make speed tests with visual c++ ? i do not have the > time currently... Thanks:) I don't have a windows development environment, but I sure would welcome all feedback. I sure want eigen2 to at least compile with various compilers. As for speed tests, if some minor tweaking can improve performance with VC++, let's do it. For instance, if VC++ has a direct equivalent for gcc's __attribute__((always_inline)) then let's define EI_ALWAYS_INLINE to be that, in the case the compiler is VC++. Cheers, Benoit
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