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Message-ID: <4EEBDB95.4030109@hushmail.com>
Date: Sat, 17 Dec 2011 01:00:21 +0100
From: magnum <john.magnum@...hmail.com>
To: john-dev@...ts.openwall.com
Subject: Re: OpenMP for MD5-crypt
On 12/17/2011 12:37 AM, Solar Designer wrote:
> magnum -
>
> I am making the below change in -jumbo-5 such that the multiple threads
> are used in single crack mode as well.
>
> --- john-1.7.9-jumbo-4/src/MD5_fmt.c 2011-12-16 02:25:34 +0400
> +++ john-1.7.9-jumbo-5/src/MD5_fmt.c 2011-12-17 03:34:12 +0400
> @@ -79,9 +79,11 @@
> {
> MD5_std_init(pFmt);
> #if defined(_OPENMP)&& defined(MD5_SSE_PARA)
> - omp_para = OMP_SCALE * omp_get_max_threads();
> + omp_para = omp_get_max_threads();
> if (omp_para< 1)
> omp_para = 1;
> + fmt_MD5.params.min_keys_per_crypt = MD5_N * omp_para;
> + omp_para *= OMP_SCALE;
> fmt_MD5.params.max_keys_per_crypt = MD5_N * omp_para;
> #elif MD5_std_mt
> fmt_MD5.params.min_keys_per_crypt = MD5_std_min_kpc;
>
> Non-SIMD version of the code already used a similar approach.
Great! I didn't know there was a problem. How does this affect single
mode? Would min=max work too or is that also bad?
magnum
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