Playing SIMD

Iakh via Digitalmars-d digitalmars-d at puremagic.com
Mon Oct 26 04:10:30 PDT 2015


On Monday, 26 October 2015 at 09:49:00 UTC, Iakh wrote:
> On Monday, 26 October 2015 at 00:00:45 UTC, anonymous wrote:
>> runBinary calls naiveIndexOf. You're not testing binaryIndexOf.
>
> You are right.
> This is fixed example:
> http://dpaste.dzfl.pl/f7a54b789a21
>
> and results at dpaste.dzfl.pl:
> -----
> SIMD:   TickDuration(151000)
> Binary: TickDuration(255000)
> Naive:  TickDuration(459000)
>
> So SIMD version ~1.68 faster than binary

At home with defult dub config "dub run --build=release":
-----
SIMD:    TickDuration(350644)
Binary:  TickDuration(434014)
Naive:   TickDuration(657548)


~1.24 times faster than binary and
~1.87 times faster than naive


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