Re: [boost] Boost SIMD beta release

Subject: Re: [boost] Boost SIMD beta release
From: Dave Abrahams (dave_at_[hidden])
Date: 2012-12-20 13:12:17

on Thu Dec 20 2012, Joel Falcou <joel.falcou-AT-gmail.com> wrote:

> Maybe we should have a simd::unaligned_input_iterator and/or make
> simd::transform accept non aligned data. Note that on any pre-Nehalem
> CPU, the unaligned load will be horrendsously slow.

It's probably a bit late to bring this up, but did you consider a design
that uses something like Matt Austern's segmented iterator concept
(http://lafstern.org/matt/segmented.pdf) and imposes a hierarchical view
over regular memory that segments on aligned memory regions?

-- 
Dave Abrahams
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