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Date: Sun, 6 Dec 2015 22:27:53 +0100
From: magnum <>
Subject: Re: hashcat CPU vs. JtR

On 2015-12-06 15:53, Solar Designer wrote:
> On Sun, Dec 06, 2015 at 05:40:44PM +0300, Solar Designer wrote:
>> [ hashcat-build]$ ./hashcat-cli64.bin -b -m 3200
>> Initializing hashcat v2.00 with 32 threads and 32mb segment-size...
>> Device...........: Intel(R) Xeon(R) CPU E5-2670 0 @ 2.60GHz
>> Instruction set..: x86_64
> Oh, I just realized I should have explicitly built for AVX.  I just did,
> with "make posixAVX".  This produced hashcat-cliAVX.bin.  Somehow it's a
> bit slower at bcrypt:
> (...)
> So clearly AVX does improve speeds at some of these, but overall it's
> the same picture as before.

Another aspect is HC does not take advantage of AVX2 yet and Atom had no 
plans for fixing that (but now someone else could). So using an AVX2 
build, JtR runs in circles around HC. And we also support AVX-512 already...


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