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Message-ID: <CANJ2NMNhRd+3hHYibn+=dUmeucabPLLO=YysC8ng4kz9dvf+YA@mail.gmail.com>
Date: Sat, 14 Apr 2012 23:13:41 +0800
From: myrice <qqlddg@...il.com>
To: john-dev@...ts.openwall.com
Subject: Xsha512 OpenCL Code
Hi, all
I just implement XSHA512 on OpenCL. It is already in myrice-JtR of my
github(https://github.com/qqldd/myrice-JtR).
Here are benchmark on GTX580:
Benchmarking: Mac OS X 10.7+ salted SHA-512 [OpenCL]... DONE
Many salts: 52937K c/s real, 49569K c/s virtual
Only one salt: 24197K c/s real, 22469K c/s virtual
And my G9600MGS:
Benchmarking: Mac OS X 10.7+ salted SHA-512 [OpenCL]... DONE
Many salts: 1395K c/s real, 1381K c/s virtual
Only one salt: 1330K c/s real, 1317K c/s virtual
In G9600MGS, it performs better than cuda code. Amazing!
At this moment, I haven't implemented cmp_all on GPU. Hopefully add it in
next few days.
Besides, though there is find_best_workgroup in opencl_xsha512_fmt.c, I
don't use it. Since the max_group_size is too large(512 for G9600MGS, 1024
for GTX580). There is always a CL_OUT_OF_RESOURCES error. I fix
it(local_work_size) to 128 on 9600 and 512 on GTX580.
Please notice that if you want to change local_work_size(I use THREADS in
top of opencl_xsha512_fmt.c and xsha512_kernel.cl), you should both change
the defination in both opencl_xsha512_fmt.c and xsha512_kernel.cl. I will
solve it by pass a parameter to the OpenCL code in next commit.
Thanks!
Dongdong Li
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