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Date: Wed, 15 Feb 2012 08:23:13 -0800
From: Alain Espinosa <>
Subject: Re: OMP version not use all CPU

On 2/15/12, Solar Designer <> wrote:
> Yes, but my question was about speeds of john-omp.exe - I don't think
> you provided any numbers for that (except for CPU time use percentages).

I will add all those numbers to the performance webpage mentioned earlier.

> And perhaps you can contribute some optimizations, too. ;-)

The main optimization in Hash Suite is not in the "format" itself but
in the key-generation and found matches process. This ideas can not
apply easily in john without break support to many other options. But
there some "things" that i was planing to add when i have some free
time/supported hardware:
1- Eliminate in 32 bits version the use of 32 bits register. This
improve performance in old CPU (when i wrote initially the asm) but
currently i think it slow down performance.
2- Eliminate the full binary and only use partial (for table hash lookup).
3- AVX support. I think we need for this AVX2 with integer support.


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