Date: Fri, 20 Apr 2012 17:12:07 +0200 From: Lukas Odzioba <lukas.odzioba@...il.com> To: john-dev@...ts.openwall.com Subject: Re: [Off-topic] Experiments! 2012/4/19 Claudio André <claudioandre.br@...il.com>: > To clarify: my motivation was to show that is possible to run crypt SHA-512 > on cheap GPU, and crack a real set of data (some random passwords). And it > is done now, and i have to thank John community to give me the good software > i can work with. > My problem is solved. Good GPU hardware is not affordable here. I'm afraid > i'm not going to be much active further. > Thank you for working on that format! We will have to add: #pragma OPENCL EXTENSION cl_khr_byte_addressable_store: enable to kernel for NVIDIA devices (tested on gtx460). It looks that including in kernel does not work, at least on 2.5. ukasz@...kstar$../run/john -test --format=cryptsha512-opencl OpenCL platform 0: NVIDIA CUDA, 1 device(s). Using device 0: GeForce GTX 460 Local work size (LWS) 64, Keys per crypt (KPC) 8192 Benchmarking: crypt SHA-512 (rounds=5000) [OpenCL]... OpenCL error (CL_INVALID_COMMAND_QUEUE) in file (opencl_cryptsha512_fmt.c) at line (541) - (failed in clFinish) ukasz@...kstar$../run/john -test --format=cryptsha512-opencl -platform=1 -device=0 OpenCL platform 1: AMD Accelerated Parallel Processing, 2 device(s). Using device 0: Cypress Compilation log: /tmp/OCLA4iLdw.cl(14): catastrophic error: cannot open source file "opencl_cryptsha512.h" #include "opencl_cryptsha512.h" ^ 1 catastrophic error detected in the compilation of "/tmp/OCLA4iLdw.cl". Compilation terminated. Internal error: compiler frontend invocation failed. Make sure ATISTREAMSDKROOT is set OpenCL error (CL_INVALID_KERNEL_NAME) in file (opencl_cryptsha512_fmt.c) at line (324) - (Error creating kernel. Double-check kernel name?) Lukas
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