| Re: [eigen] State of eigen support for small integers(16 bit, signed/unsigned) |
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- To: eigen@xxxxxxxxxxxxxxxxxxx
- Subject: Re: [eigen] State of eigen support for small integers(16 bit, signed/unsigned)
- From: Rohit Garg <rpg.314@xxxxxxxxx>
- Date: Thu, 20 Aug 2009 07:17:16 -0700
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1) My app thrashes cache badly, so save space, and improve locality of
reference!
2) Smaller ints are a _tiny_ bit faster.
3) 1 Vector expression is better than three for my app.
4) Video encode, decode deals in int/uint16 exclusively. But that's
not what I am working on.
On Thu, Aug 20, 2009 at 7:13 AM, Thomas Capricelli<orzel@xxxxxxxxxxxxxxx> wrote:
> In data giovedì 20 agosto 2009 15:45:34, Benoit Jacob ha scritto:
>> Yes, most welcome. When I look at forums linking to our website, this
>> is a frequently wanted feature. The fact that people on this list
>> asked for it several times, finishes proving that it's a wanted
>> feature. Vectorization is most welcome here too -- the prospect of 8x
>> boosts on int16 and 16x boosts on int8 is very interesting...
>
> I'm quite curious : why would people need 8-bit or 16-bit integers nowadays ?
> I can only think of embedded platforms, but that does not seem to be the
> matter here, is it ? Or is it for the speed ? kind of ... trading precsion for
> speed, that's it ?
>
> regards,
> Thomas
>
>
>
--
Rohit Garg
http://rpg-314.blogspot.com/
Senior Undergraduate
Department of Physics
Indian Institute of Technology
Bombay