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Date: Fri, 29 Sep 2006 13:54:54 +0400
From: Solar Designer <solar@...nwall.com>
To: john-users@...ts.openwall.com
Subject: Re: Development status
On Thu, Sep 28, 2006 at 10:45:46PM +0200, kraeh wrote:
> since a friend of mine has reached about 1.500.000 c/s
It doesn't make sense to mention c/s rates without providing further
detail. What hash type? Is it a --test benchmark or an actual cracking
run? In the latter case, how many hashes and different salts? These
things affect the effective c/s rate heavily.
> on one machine at a university, and i think thes dont have a 16GHz P4...
If this applies to the "Traditional DES" / "Many salts" benchmark, which
is arguably the most essential one for JtR, then a rate of 1.6M c/s can
be achieved on a single PowerPC G5 at 2.7 GHz (with AltiVec). P4 at
around 3 GHz can achieve somewhere up to 1M c/s, too, with the SSE2 code
in JtR 1.7.2+.
> u can guess john is multithreaded =)
No, it is not. Moreover, I had previously mentioned why multi-threading
is likely not the best way to parallelize John:
http://www.openwall.com/lists/john-users/2006/04/27/5
--
Alexander Peslyak <solar at openwall.com>
GPG key ID: 5B341F15 fp: B3FB 63F4 D7A3 BCCC 6F6E FC55 A2FC 027C 5B34 1F15
http://www.openwall.com - bringing security into open computing environments
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