Date: Tue, 08 May 2012 01:13:37 +0200 From: magnum <john.magnum@...hmail.com> To: john-dev@...ts.openwall.com Subject: Re: Lukas - status report #3 On 05/07/2012 11:22 PM, Lukas Odzioba wrote: > I've been working on opencl problems on Bull. Unfortunatelly I wasn't > able to fix any of them. Magnum stated that they should be trivial, > but somehow I couldn't make formats work as they should. I didn't really intend to fix your problems but I noticed you never implemented this: http://www.openwall.com/lists/john-dev/2012/04/10/4 so I got curious now and tried it. OpenCL platform 0: NVIDIA CUDA, 1 device(s). Using device 0: GeForce GTX 570 Optimal Group work Size = 256 Benchmarking: PHPASS-OPENCL [PORTABLE-MD5]... DONE Raw: 502690 c/s real, 601043 c/s virtual OpenCL platform 0: NVIDIA CUDA, 1 device(s). Using device 0: GeForce GTX 570 Optimal Group work Size = 32 Benchmarking: wpapsk-opencl [GPU - OpenCL]... DONE Raw: 24094 c/s real, 24094 c/s virtual Simple as that ;-) For crypt-md5, it's a matter of compilers not being very verbose (or rather, not telling you a dang thing). When I get weird problems like this I use to try all compilers, nvidia, AMD and Intel. Usually one of them (and usually just one, and you never know which) informs about a problem but not this time. I have yet to succeed in building clcc on bull, but on my laptop I got this: $ clcc opencl/cryptmd5_kernel.cl output.ptx Building... :150:6: error: call to 'rotate' is ambiguous a = ROTATE_LEFT(AC1 + x, S11); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~ :9:27: note: instantiated from: #define ROTATE_LEFT(x, s) rotate(x,s) ^~~~~~ <built-in>:2784:22: note: candidate function int __OVERLOADABLE__ rotate(int, int); ^ <built-in>:2785:23: note: candidate function uint __OVERLOADABLE__ rotate(uint, uint); ^ <built-in>:2780:23: note: candidate function char __OVERLOADABLE__ rotate(char, char); ^ <built-in>:2781:24: note: candidate function uchar __OVERLOADABLE__ rotate(uchar, uchar); ^ ...and almost 10,000 similar lines. So armed with this knowledge it was in fact trivial: -#define ROTATE_LEFT(x, s) rotate(x,s) +#define ROTATE_LEFT(x, s) rotate(x, (uint32_t)s) OpenCL platform 0: NVIDIA CUDA, 1 device(s). Using device 0: GeForce GTX 570 Max Group Work Size 960 Optimal Group work Size = 128 Benchmarking: CRYPTMD5-OPENCL [MD5-based CRYPT]... DONE Raw: 653872 c/s real, 646647 c/s virtual On the 7970 we get a nice ASIC hang as usual though :-/ magnum
Powered by blists - more mailing lists
Confused about mailing lists and their use? Read about mailing lists on Wikipedia and check out these guidelines on proper formatting of your messages.