Date: Fri, 14 Jun 2019 11:11:16 -0400 From: billwhittaker@...e-mail.net To: john-users@...ts.openwall.com Subject: Re: Unable to use OpenCL on arm64v8/debian stretch > > ../run/john --test --format=wpapsk-opencl > > Device 1@...i: Mali-T860 > > Benchmarking: wpapsk-opencl, WPA/WPA2/PMF/PMKID PSK [PBKDF2-SHA1 OpenCL]... 0: OpenCL CL_INVALID_PROGRAM_EXECUTABLE (-45) error in opencl_wpapsk_fmt_plug.c:270 - Error creating kernel > > Line 270 points at the run-time GPU build of WPA2/802.11w final kernel. > Before this error, your system successfully built six other WPA kernels, What do you mean by "your system successfully built six other WPA kernels" and how do know? How can I revert to an earlier kernel? Where does the kernel reside? I ask the last question b/c perhaps I can retrieve/derive it from my Rock64's packages (where pocl functions for the CPU). > so again it looks like there's no general problem with your installation > but likely some runtime/driver bug that surfaces with this particular > 7th kernel (which is a straight-forward kernel just involving SHA-256 > and AES-CMAC). > > On a side note, what's the speed of the CPU format given just "--test > --format=wpapsk" instead? ../run/john --test --format=wpapsk Will run 6 OpenMP threads Benchmarking: wpapsk, WPA/WPA2/PMF/PMKID PSK [PBKDF2-SHA1 128/128 ASIMD 4x]... (6xOMP) DONE Speed for cost 1 (key version [0:PMKID 1:WPA 2:WPA2 3:802.11w]) of 2 Raw: 1317 c/s real, 292 c/s virtual > Judging from the speed you got from > sha1crypt-opencl, I doubt your GPU will be of much help cracking WPA > (and BTW what's the speed of CPU sha1crypt?). Yeah, looks that way. Exactly double that of the GPU. ../run/john --test --format=sha1crypt Will run 6 OpenMP threads Benchmarking: sha1crypt, NetBSD's sha1crypt [PBKDF1-SHA1 128/128 ASIMD 4x]... (6xOMP) DONE Speed for cost 1 (iteration count) of 64000 and 40000 Raw: 234 c/s real, 48.1 c/s virtual
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