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Date: Sun, 24 Jun 2012 01:08:07 +0400
From: Solar Designer <solar@...nwall.com>
To: john-dev@...ts.openwall.com
Subject: xsha512-opencl, raw-sha512-opencl on HD 7970 (was: Myrice: Weekly Report #3)
myrice -
This is a reminder that the problem mentioned below is still present.
Yet raw-sha512-opencl passes self-test fine (but is slow).
On Tue, May 01, 2012 at 04:29:12AM +0400, Solar Designer wrote:
> Can you please add the following tasks to the above list? -
>
> 4. Get xsha512-opencl to work on the HD 7970 in bull. Currently, the
> version in magnum-jumbo fails as follows:
>
> user@...l:~/john/magnum-jumbo/src$ ../run/john -te -fo=xsha512-opencl -pla=1
> OpenCL platform 1: AMD Accelerated Parallel Processing, 2 device(s).
> Using device 0: Tahiti
> Compilation log: LOOP UNROLL: pragma unroll (line 174)
> Unrolled as requested!
> LOOP UNROLL: pragma unroll (line 179)
> Unrolled as requested!
> LOOP UNROLL: pragma unroll (line 194)
> Unrolled as requested!
>
> Local work size = 256
> Global work size = 2097152
> Benchmarking: Mac OS X 10.7+ salted SHA-512 [OpenCL]... FAILED (get_hash[0](0))
>
> It works on GTX 570 and on CPU fine. :-) In fact, on CPU it is only
> slightly slower than the OpenSSL/OpenMP code, which is impressive.
$ ./john -te -fo=xsha512-opencl -pla=1
OpenCL platform 1: AMD Accelerated Parallel Processing, 2 device(s).
Using device 0: Tahiti
Compilation log: LOOP UNROLL: pragma unroll (line 163)
Unrolled as requested!
LOOP UNROLL: pragma unroll (line 168)
Unrolled as requested!
LOOP UNROLL: pragma unroll (line 183)
Unrolled as requested!
Optimal Group work Size = 256
Global work size = 2097152
Benchmarking: Mac OS X 10.7+ salted SHA-512 [OpenCL]... FAILED (get_hash[0](0))
$ ./john -te -fo=raw-sha512-opencl -pla=1
OpenCL platform 1: AMD Accelerated Parallel Processing, 2 device(s).
Using device 0: Tahiti
Compilation log: LOOP UNROLL: pragma unroll (line 163)
Unrolled as requested!
LOOP UNROLL: pragma unroll (line 168)
Unrolled as requested!
LOOP UNROLL: pragma unroll (line 183)
Unrolled as requested!
Optimal Group work Size = 128
Global work size = 524288
Benchmarking: Raw SHA-512 [OpenCL]... DONE
Raw: 17854K c/s real, 29756K c/s virtual
Alexander
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