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Date: Sat, 31 May 2014 23:44:09 +0200
From: magnum <john.magnum@...hmail.com>
To: john-dev@...ts.openwall.com
Subject: Re: Different c/s speed after compiling with new autoconf
 on 32-bit system (64bit system not affected)

On 2014-05-31 22:09, [Jano] wrote:
> I have also a 32-bit machine and today when pull the new
> bleeding-jumbo I see this difference:
> Will run 2 OpenMP threads
> Benchmarking: wpapsk, WPA/WPA2 PSK [PBKDF2-SHA1 128/128 SSE2 4x]...
> (2xOMP) DONE
> Raw:    376 c/s real, 188 c/s virtual

> jano:~$ john --test --format=wpapsk
> Will run 2 OpenMP threads
> Benchmarking: wpapsk, WPA/WPA2 PSK [PBKDF2-SHA1 128/128 SSE2 8x]...
> (2xOMP) DONE
> Raw:    345 c/s real, 176 c/s virtual

This is supposedly not caused by autoconf - the "4x" or "8x" is chosen 
from your version of gcc, regardless of building w/ autoconf or not. But 
it's not the sharpest of swords.

Try "./configure --with-icc-asm && make -s clean default" and see if it 
ends up faster.

magnum


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