By: Anders (anders.delete@this.no.reply.co), October 3, 2015 11:04 pm
Room: Moderated Discussions
itsmydamnation (no.delete@this.way.com) on October 3, 2015 3:47 pm wrote:
> Heikki Kultala (hkultala.delete@this.iki.fi) on October 3, 2015 8:01 am wrote:
>
> >
> > Though the 128-bit FPU's are one thing which Dresdenboy quessed without
> > any better knowledge/any source. They may also be 256-bit.
> >
>
> i saw somewhere that the patch Dresdenboy got the other specs
> from it stated that 256bit ops are fast path doubles.
>
>
> cheers
>
>
The patch Dresdenboy referenced in his blog post stated all `znver1_avx256_*` (add, iadd, mov, log, etc.) entries are `znver1-double`, instead of `znver1-direct` is attributed on all the `znver1_sseavx_*` entries.
Link: https://patchwork.ozlabs.org/patch/524324/
> Heikki Kultala (hkultala.delete@this.iki.fi) on October 3, 2015 8:01 am wrote:
>
> >
> > Though the 128-bit FPU's are one thing which Dresdenboy quessed without
> > any better knowledge/any source. They may also be 256-bit.
> >
>
> i saw somewhere that the patch Dresdenboy got the other specs
> from it stated that 256bit ops are fast path doubles.
>
>
> cheers
>
>
The patch Dresdenboy referenced in his blog post stated all `znver1_avx256_*` (add, iadd, mov, log, etc.) entries are `znver1-double`, instead of `znver1-direct` is attributed on all the `znver1_sseavx_*` entries.
Link: https://patchwork.ozlabs.org/patch/524324/