[FFmpeg-trac] #5568(swscale:open): POWER8 VSX vectorization libswscale/swscale.c
FFmpeg
trac at avcodec.org
Sat Jun 23 06:10:09 EEST 2018
#5568: POWER8 VSX vectorization libswscale/swscale.c
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Reporter: edelsohn | Owner:
Type: enhancement | Status: open
Priority: wish | Component: swscale
Version: git-master | Resolution:
Keywords: bounty vsx | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
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Comment (by bookmoons):
I have a first build of a skeleton asm version. This is promising.
Numbers from the new command line (with my poor exploratory code mentioned
above). Now timing just the one call as recommended.
{{{
21340 Plain C
19609 New VSX optimized
6214 Altivec optimized
}}}
It does help stabilize. With the old command the first run would sometimes
be wildly higher. There are a few lines with skips now, so I'm taking the
last line with 0-2 skips.
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Ticket URL: <https://trac.ffmpeg.org/ticket/5568#comment:31>
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