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Date: Sat, 5 Jan 2013 09:04:41 +0400
From: Solar Designer <solar@...nwall.com>
To: john-dev@...ts.openwall.com
Subject: Re: BLAKE2 (was: New plugin load order magic)
On Sat, Jan 05, 2013 at 10:12:41AM +0530, Dhiru Kholia wrote:
> Using SSE on FX-8120 gives a small boost.
>
> $ ../run/john -fo:raw-blake2-512 -t
> Benchmarking: BLAKE2 512 [32/64]... DONE
> Raw: 2533K c/s real, 2533K c/s virtual
>
> However, doing the same on AMD X3 720 leads to a *weird* performance
> drop from 2.xM c/s to 1.6M c/s.
Maybe this CPU has much higher instruction latencies for SIMD vs. ALU
instructions - more so than Bulldozer.
Alexander
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