Subject: Re: [boost] [string] Yet another Unicode string class
From: Mathias Gaunard (mathias.gaunard_at_[hidden])
Date: 2011-02-15 08:05:49
On 15/02/2011 13:35, Jeff Flinn wrote:
> This caught my eye. A couple of years ago I looked at MMX/SIMD - tested
> an example off of the codeguru website which out of the box showed
> MMX/SIMD was faster. I unrolled the loop of the non-MMX/SIMD code using
> duff's device and saw no difference in performance with or without
> MMX/SIMD. I'm just wondering in your experience is there a real benefit
> of MMX/SIMD even discounting the alignment issue.
I don't think copying 3 words is really the area where SIMD shines the most.
But it does shine (with linear speedups) in others.
Boost list run by bdawes at acm.org, gregod at cs.rpi.edu, cpdaniel at pacbell.net, john at johnmaddock.co.uk