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Date: Sun, 26 Jul 2015 15:58:42 +0200
From: Solar Designer <solar@...nwall.com>
To: john-dev@...ts.openwall.com
Subject: Re: PHC: Lyra2 vs yescrypt benchmarks 2
Agnieszka,
On Sun, Jul 26, 2015 at 03:40:18PM +0200, Solar Designer wrote:
> On Sun, Jul 26, 2015 at 03:15:43PM +0200, Agnieszka Bielec wrote:
> > I was thinking that it uses AVX2 becaues Lyra2 uses
> > blake2b which has some instructions in SSE4_1
>
> Huh?! Do you understand how SSE2, SSE4.1, AVX, and AVX2 correspond to
> each other and in what ways they differ? Can you please explain your
> understanding to me, so that I see if it's correct or where exactly it
> is wrong. You sound confused pretty badly here. Perhaps not enough
> assembly output reading on your part. ;-)
To clarify, I don't need a lot of detail from you - e.g., I am not
asking you to list all extra instructions available with one of these
that are not in another (although listing one or two particularly
relevant instructions is OK). I just need a few sentences summarizing the
relationship and main differences between these SIMD instruction sets.
Thanks,
Alexander
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