Date: Fri, 4 Dec 2020 17:09:30 +0100 From: r.wiesbach@....de To: john-users@...ts.openwall.com, Solar Designer <solar@...nwall.com> Subject: Re: dmg-opencl low performance/ low gpu utilisation > Quite possibly you already have a suitable tool installed along with the > AMD GPU driver you use. You might want to look for an AMD Radeon > specific section in your Control Panel. In fact that is the case. The "AMD Radeon Software" has a 4th tab called "Performance" (or similar, I dont use the English version) which shows almost full utilization of both cards. Lesson learnt, do not trust Windows Task Manager for GPGPU. However I learnt a lot useful details from you on the way. Thank you again. > Given these, I recommend that you specify explicit "-lws 64 -gws 73728" > on the command-line. Just for other readers: the = is missing there: -lws*=*64 -gws*=*73728 it seems that I can also use the fixed parameters together with --restore, which is very nice. (At least john does not complain about option clash)
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