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Date: Sat, 05 May 2012 01:45:42 +0200
From: magnum <john.magnum@...hmail.com>
To: john-dev@...ts.openwall.com
Subject: Re: New RAR OpenCL kernel
On 05/04/2012 08:19 PM, Milen Rangelov wrote:
> OK, my tests are all successful until now. Speed is relatively the same,
> doesn't matter whether the compressed file is a 4KB text file, or a 50MB
> avi movie :) Unfortunately there is still overhead as compared to the HE
> case, speed being somewhat 20% slower. I am still not 100% whether this
> would hold true in all cases and if I am wrong, it might happen that for
> some archives we can get false negatives.
>
> I am not yet 100% convinced I am correct yet though. The approach is based
> on 2 assumptions, first one can easily be proved, the second one is related
> to the LZ algorithm and I cannot yet prove what I check is safe and can't
> occur in a valid LZ stream.
This is good news Milen, just what I hoped for. I am SURE there are such
short-cuts because cRARk runs full speed no matter what you throw at it.
Please do share your findings, you know I would.
magnum
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