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Message-ID: <fa6045991a9c5fdfd3a14162dc9e2a63@smtp.hushmail.com>
Date: Fri, 24 Mar 2017 08:54:32 +0100
From: magnum <john.magnum@...hmail.com>
To: john-users@...ts.openwall.com
Subject: Re: GPU performance
On 2017-03-23 21:04, Patrick Proniewski wrote:
>> patpro@...cracker:~$ ./john/run/john -test -format=raw-sha1-opencl
>> Device 1: GeForce GTX 1080
>> Benchmarking: Raw-SHA1-opencl [SHA1 OpenCL]... DONE
>> Raw: 87208K c/s real, 87208K c/s virtual
>
> On one hand, I find it surprising that raw-sha1-opencl on GTX 1080 is only 3.3 times faster than raw-sha1 on 2.1 GHz Xeon (E5-2620 v4).
>
> On the other hand, hashcat got a very nice 8191.7 MH/s on the GPU:
Try adding -mask too, as in "john -test -mask -format=raw-sha1-opencl".
Most of our fast OpenCL formats support GPU-side mask which speeds
things up. But for the fastest formats, hashcat is still a bit better.
magnum
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