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Message-Id: <8E88871D-D79A-4DAE-BE33-A36A16192D68@gmail.com>
Date: Fri, 10 Jul 2015 16:56:08 +0800
From: Lei Zhang <zhanglei.april@...il.com>
To: john-dev@...ts.openwall.com
Subject: Re: JtR on Power
> On Jul 9, 2015, at 12:00 PM, Lei Zhang <zhanglei.april@...il.com> wrote:
>
> Strangely, MD5, SHA256 and SHA512 become even slower. Currently there're some inefficient emulation for several intrinsics, notably int64 shift, which very likely slows down SHA512 here. I try to do some optimization and see how it goes.
With some optimization, the result gets better.
OpenMP disabled this time:
[before]
Benchmarking: Raw-MD4 [MD4 32/64]... DONE
Raw: 3552K c/s real, 3588K c/s virtual
Benchmarking: Raw-MD5 [MD5 32/64]... DONE
Raw: 2784K c/s real, 2812K c/s virtual
Benchmarking: Raw-SHA1 [SHA1 32/64]... DONE
Raw: 3661K c/s real, 3661K c/s virtual
Benchmarking: Raw-SHA256 [SHA256 32/64 OpenSSL]... DONE
Raw: 2306K c/s real, 2330K c/s virtual
Benchmarking: Raw-SHA512 [SHA512 32/64 OpenSSL]... DONE
Raw: 1868K c/s real, 1887K c/s virtual
[after]
Benchmarking: Raw-MD4 [MD4 128/128 AltiVec 4x]... DONE
Raw: 10755K c/s real, 10649K c/s virtual
Benchmarking: Raw-MD5 [MD5 128/128 AltiVec 4x]... DONE
Raw: 9073K c/s real, 9258K c/s virtual
Benchmarking: Raw-SHA1 [SHA1 128/128 AltiVec 4x]... DONE
Raw: 7964K c/s real, 8127K c/s virtual
Benchmarking: Raw-SHA256 [SHA256 128/128 AltiVec 4x]... DONE
Raw: 5849K c/s real, 5908K c/s virtual
Benchmarking: Raw-SHA512 [SHA512 128/128 AltiVec 2x]... DONE
Raw: 2711K c/s real, 2711K c/s virtual
Speedup of each format:
-----------
MD4 3.0
MD5 3.3
SHA1 2.2
SHA256 2.5
SHA512 1.4
-----------
I'll take a closer look at AltiVec's manual and see if I can squeeze a little more performance out of it.
Lei
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