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Date: Sun, 9 May 2010 07:18:50 -0400
From: Erik Winkler <>
Subject: Re: OpenMP

Patch compiles and works flawlessly on MacOS 10.6 as OpenMPI is part of the OS.  CPU is a Intel "Core 2 Duo" "Penryn" (P8600).

./john -test -format:bf
Benchmarking: OpenBSD Blowfish (x32) [32/64 X2]... DONE
Raw:	1211 c/s real, 627 c/s virtual

Running with more threads on this CPU degrades performance:

OMP_NUM_THREADS=4 ./john --test=1 --format=bf
Benchmarking: OpenBSD Blowfish (x32) [32/64 X2]... DONE
Raw:	1165 c/s real, 628 c/s virtual

This would be very useful for other hash types as well.  Nice work Alexander.


On May 8, 2010, at 10:56 AM, Solar Designer wrote:

> Have fun.  As usual, any feedback is welcome.
> Alexander
> <john-1.7.5-omp-1.diff>

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