Date: Mon, 19 Sep 2011 17:02:45 +0400 From: Solar Designer <solar@...nwall.com> To: john-users@...ts.openwall.com Subject: Re: OpenCL performance numbers on Radeon HD 5870 Paul - thanks! All - this started as off-list discussion between Paul, Lukas, and me - initially focusing on poor performance of the phpass OpenCL code that Paul was observing. I asked Paul to bring it to the list. On Mon, Sep 19, 2011 at 12:43:47PM +0000, Relkin, Paul wrote: > ./john -test -format=phpassopencl > Benchmarking: PHPASSOPENCL [PORTABLE-MD5]... > OpenCL Device: Cypress > DONE > Raw: 35415 c/s real, 131764 c/s virtual This is poor performance. Lukas is going to look into it once he has a similar GPU himself (should be soon). Meanwhile, the CUDA and OpenCL patches are providing much better performance on NVidia cards: 200k c/s to 300k c/s real at a phpass benchmark similar to the above on GTX 460. > ./john -test -format=cryptmd5opencl > Benchmarking: CRYPTMD5OPENCL [MD5-based CRYPT]... > OpenCL Device: Cypress > Error while building program [-11] > BUILD LOG: > /tmp/OCLyZkkkh.cl(1): catastrophic error: cannot open source file > "../src/cryptmd5opencl_fmt.h" > #include "../src/cryptmd5opencl_fmt.h" > > ./john -test -format=cryptsha256opencl > Benchmarking: CRYPTSHA256OPENCL [SHA256-based CRYPT]... > OpenCL Device: Cypress > Error while creating program [-30] Lukas is to look into these failures as well. Obviously, this did not happen for the systems that he developed and tested the code on. Thanks again, Alexander
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