Re: TIMEOUT MERGE: move AlignedArray to public API

[Tim Janik <tim janik lanedo com>]

On Sat, 5 Jun 2010, Stefan Westerfeld wrote:

> TIMEOUT MERGE TIMEOUT MERGE TIMEOUT MERGE TIMEOUT MERGE TIMEOUT MERGE
>
>   Hi!
>
> To be able to use SSE functions (like my fast sincos() implementation), the
> caller has to ensure 16-byte alignment. AlignedArray does this in a fairly
> elegant manner, but so far it was only used by the Resampler code. Since now
> there are other pieces of code (like the SpectMorph Encoder) that need
> 16-byte-alignment (for calling SSE functions), here is a patch to move the
> class to Birnet::AlignedArray.

Thinking of cache line trashing, shouldn't we strive for a
64-byte aligned array if we do this at all?
64-byte aligned memory blocks are generally used to
avoid false sharing. See:
	http://en.wikipedia.org/wiki/False_sharing

> repo:   http://space.twc.de/public/git/stwbeast.git
> branch: aligned-array
>
>   Cu... Stefan
> --
> Stefan Westerfeld, Hamburg/Germany, http://space.twc.de/~stefan


Yours sincerely,
Tim Janik

---
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