Subject: Re: [boost] Boost SIMD beta release
From: Mukkaysh Srivastav (srimks11_at_[hidden])
Date: 2012-12-20 05:10:07
Great work, SIMD is all time favorite for me. Thanks for extending SIMD
support for Boost library.
On Thu, Dec 20, 2012 at 3:29 PM, Tim Blechmann <tim_at_[hidden]> wrote:
> > * We welcome comments, questions and random requests/rants/bug reports
> > as to polish the library before actual submission to the boost
> > review. Such comments
> > can be sent there, on our nt2-dev Google groups or in the nt2 issue
> > tracker.
> in a way it is hard to comment on the library, as the documentation does
> not really exist, still some questions/thoughts, maybe i've missed
> something in the slides/paper ... didn't have a look at the code, yet:
> * does boost.simd support horizontal operations (fold/reduce/accumulate)?
> * is it possible to define simd kernels for both packs and scalars e.g.
> to make use of branches in the scalar implementation used in
> preroll/postroll of unrolled loops?
> * does boost.simd have any facility to do loop unrolling? in my library,
> i'm unrolling loops by the size of a cache line and try to avoid
> read-after-write hazards by pre-loading data.
> * how does boost.simd deal with stack alignment? on win32 i ended up
> compiling with -mstackrealign, though it is said not to be the best
> solution (didn't have a closer look)
> cheers, tim
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