[FFmpeg-devel] [PATCH 4/4] huffyuvencdsp: Add ff_diff_bytes_avx2

[Timothy Gu]

On Mon, Oct 19, 2015 at 1:44 PM Ganesh Ajjanagadde <gajjanag at mit.edu> wrote:

> On Mon, Oct 19, 2015 at 4:41 PM, Hendrik Leppkes <h.leppkes at gmail.com>
> wrote:
> > On Mon, Oct 19, 2015 at 10:36 PM, Ganesh Ajjanagadde <gajjanag at mit.edu>
> wrote:
> >> On Mon, Oct 19, 2015 at 4:00 PM, Timothy Gu <timothygu99 at gmail.com>
> wrote:
> >>> About 16% faster on large clips (>1200px width), more than 2x slower
> on small clips
> >>> (352px). So using a heuristic to select with one to use.
> >>
> >> What system, what compiler, etc? Without any such information, numbers
> >> are meaningless. Please either give them in full, or not at all -
> >> particularly here since there is this "voodoo" threshold that needs to
> >> be picked.
> >
> > It assembly, compiler is meaningless.
>
> system and cpu still is - my point still remains.
>

On a Haswell Xeon. It's on Linux, although it shouldn't matter.

Timothy