phc-discussions - Re: [PHC] GPU benchmarks: Lyra2+yescrypt (was: Another PHC candidates "mechanical" tests (ROUND2))

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Date: Sun, 26 Jul 2015 15:54:23 +0200
From: Solar Designer <solar@...nwall.com>
To: discussions@...sword-hashing.net
Subject: Re: [PHC] GPU benchmarks: Lyra2+yescrypt (was: Another PHC candidates "mechanical" tests (ROUND2))

On Sun, Jul 26, 2015 at 03:47:50AM +0200, Solar Designer wrote:
> (Also, if I understood Agnieszka correctly, Lyra2 had the advantage of
> AVX2 in its benchmark on CPU, whereas yescrypt was plain AVX only.

Correction: no, this was not correct understanding.  Neither uses AVX2
in this benchmark.

> OTOH, yescrypt can be sped up by only ~6% with AVX2 on this CPU with
> yescrypt's current pwxform settings.)

Alexander