On 7/16/2021 11:46 AM, Alan Kelly wrote:
On Fri, Jul 16, 2021 at 4:02 PM James Almer wrote:
On 7/16/2021 10:44 AM, Alan Kelly wrote:
Broadwell and later and Zen3 and later have fast gather instructions.
---
Haswell is now excluded from EXTERNAL_AVX2_FAST as discussed in the
email thread
On Fri, Jul 16, 2021 at 4:02 PM James Almer wrote:
> On 7/16/2021 10:44 AM, Alan Kelly wrote:
> > Broadwell and later and Zen3 and later have fast gather instructions.
> > ---
> > Haswell is now excluded from EXTERNAL_AVX2_FAST as discussed in the
> > email thread.
>
> I was very explicit abo
On 7/16/2021 10:44 AM, Alan Kelly wrote:
Broadwell and later and Zen3 and later have fast gather instructions.
---
Haswell is now excluded from EXTERNAL_AVX2_FAST as discussed in the
email thread.
I was very explicit about this not being ok. We're not disabling all ymm
usage for Haswell ju
Broadwell and later and Zen3 and later have fast gather instructions.
---
Haswell is now excluded from EXTERNAL_AVX2_FAST as discussed in the
email thread.
libavutil/cpu.h | 1 +
libavutil/x86/cpu.c | 11 ++-
2 files changed, 11 insertions(+), 1 deletion(-)
diff --git a/libavutil/c
12 Jul 2021, 13:53 by jamr...@gmail.com:
> On 7/12/2021 7:46 AM, Lynne wrote:
>
>> 12 Jul 2021, 11:29 by alankelly-at-google@ffmpeg.org:
>>
>>> On Fri, Jun 25, 2021 at 1:24 PM Alan Kelly wrote:
>>>
On Fri, Jun 25, 2021 at 10:40 AM Lynne wrote:
> Jun 25, 2021, 09:54 by alankelly
On 7/12/2021 7:46 AM, Lynne wrote:
12 Jul 2021, 11:29 by alankelly-at-google@ffmpeg.org:
On Fri, Jun 25, 2021 at 1:24 PM Alan Kelly wrote:
On Fri, Jun 25, 2021 at 10:40 AM Lynne wrote:
Jun 25, 2021, 09:54 by alankelly-at-google@ffmpeg.org:
Broadwell and later and Zen3 and later
12 Jul 2021, 11:29 by alankelly-at-google@ffmpeg.org:
> On Fri, Jun 25, 2021 at 1:24 PM Alan Kelly wrote:
>
>> On Fri, Jun 25, 2021 at 10:40 AM Lynne wrote:
>>
>>> Jun 25, 2021, 09:54 by alankelly-at-google@ffmpeg.org:
>>>
>>> > Broadwell and later and Zen3 and later have fast gather ins
On Fri, Jun 25, 2021 at 1:24 PM Alan Kelly wrote:
> On Fri, Jun 25, 2021 at 10:40 AM Lynne wrote:
>
>> Jun 25, 2021, 09:54 by alankelly-at-google@ffmpeg.org:
>>
>> > Broadwell and later and Zen3 and later have fast gather instructions.
>> > ---
>> > Gather requires between 9 and 12 cycles o
On Fri, Jun 25, 2021 at 10:40 AM Lynne wrote:
> Jun 25, 2021, 09:54 by alankelly-at-google@ffmpeg.org:
>
> > Broadwell and later and Zen3 and later have fast gather instructions.
> > ---
> > Gather requires between 9 and 12 cycles on Haswell, 5 to 7 on Broadwell,
> > and 2 to 5 on Skylake a
Jun 25, 2021, 09:54 by alankelly-at-google@ffmpeg.org:
> Broadwell and later and Zen3 and later have fast gather instructions.
> ---
> Gather requires between 9 and 12 cycles on Haswell, 5 to 7 on Broadwell,
> and 2 to 5 on Skylake and newer. It is also slow on AMD before Zen 3.
> libavutil
Broadwell and later and Zen3 and later have fast gather instructions.
---
Gather requires between 9 and 12 cycles on Haswell, 5 to 7 on Broadwell,
and 2 to 5 on Skylake and newer. It is also slow on AMD before Zen 3.
libavutil/cpu.h | 2 ++
libavutil/x86/cpu.c | 18 --
libav
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