phc-discussions - Re: [PHC] Argon2 CPU/GPU benchmarks

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Message-ID: <CA+hr98F1_Mi1WQaVVHgi+Mim0QZO-d2kXUVC+xxETsg-e6ZgRw@mail.gmail.com>
Date: Thu, 15 Oct 2015 15:13:09 +0200
From: Krisztián Pintér <pinterkr@...il.com>
To: "discussions@...sword-hashing.net" <discussions@...sword-hashing.net>
Subject: Re: [PHC] Argon2 CPU/GPU benchmarks

On Thu, Oct 15, 2015 at 3:03 PM, Solar Designer <solar@...nwall.com> wrote:

> For 2i, the best result is for Titan X: 6301/2480 = 2.54 times faster
> than the CPU.
>
> For 2d, the best result is for the old TITAN: 11715/7808 = 1.5 times
> faster than the CPU.

so far, i'm not convinced that data dependent access worth the
increased timing risk. although, argon uses a randomish access pattern
in i mode too, so maybe it leaves space for significant optimization
not done yet? do you plan to do some clever pre-reading?