Re: [boost] interest in structure of arrays container?

Subject: Re: [boost] interest in structure of arrays container?
From: Larry Evans (cppljevans_at_[hidden])
Date: 2016-10-25 13:41:40

On 10/25/2016 12:22 PM, Larry Evans wrote:
[snip]
>
> From the above, the LibFlatArray and SSE methods are the
> fastest.  I'd guess that a new "SoA block SSE" method, which
> uses the _mm_* methods, would narrow the difference.  I'll
> try to figure out how to do that.  I notice:
>
>   #include <mmintrin.h>
>
> doesn't produce a compile error; however, that #include
> doesn't have the _mm_add_ps used here:
>
> https://github.com/cppljevans/soa/blob/master/soa_compare.benchmark.cpp#L621
>
>
> Do you know of some package I could install on my ubuntu OS
> that makes those SSE functions, such as _mm_add_ps,
> available?
[snip]
Never mind.  Google for:

   __mm128

lead to:

 
http://stackoverflow.com/questions/11679741/vector-of-mm128-wont-push-back

and change of #include to:

   #include <emmintrin.h>

which solved problem.

particle_count=1,024
frames=1,000
minimum duration=0.0371714

comparitive performance table:

method   rel_duration
________ ______________
SSE_opt  0.330574
SSE      0.440405
Flat     0.904265
SoA      0.911574
Block    0.97398
AoS      1
StdArray 1.15079
LFA      undefined

Compilation finished at Tue Oct 25 12:36:33