Date: Sat, 3 Mar 2018 13:11:18 +0100 From: Solar Designer <solar@...nwall.com> To: john-users@...ts.openwall.com Subject: Re: Getting full performance out of multiple GPU's On Fri, Mar 02, 2018 at 10:57:09PM +0100, Piotr Dobrogost wrote: > Below are some exemplary values of utilization when running > --format=gpg-opencl on 8 gpus: GPU time utilization should be near 100%. GPU memory utilization may vary depending on actual needs - there's no universally correct/expected level of GPU memory utilization. > utilization.gpu [%], utilization.memory [%] > 13 %, 6 % > 11 %, 4 % > 13 %, 6 % > 10 %, 4 % > 75 %, 48 % > 7 %, 3 % > 13 %, 6 % > 7 %, 3 % The GPU time utilization figures here are indeed very wrong, but it's unrealistic to troubleshoot this without you posting the exact JtR command line you used and the output from JtR (just exclude the cracked passwords, if any). Alexander
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