Date: Mon, 6 May 2019 10:34:59 +0200 From: Solar Designer <solar@...nwall.com> To: john-users@...ts.openwall.com Subject: Re: unexpected benchmarks nvidia 1070 ti and 780 ti On Mon, May 06, 2019 at 10:23:58AM +0200, magnum wrote: > On 2019-05-06 03:11, Allen Kayal wrote: > >Anyone else experience slower than expected benchmarks? I'm not a hashcat > >user but ran a test to see if differences reported in output > > > >root@...-ubuntu:/usr/src/JohnTheRipper/run# ./john --test=30 > >--format=nt-opencl --dev=1 > >Device 1@...-ubuntu: GeForce GTX 1070 Ti > >Benchmarking: NT-opencl [MD4 OpenCL]... DONE > >Note: This format may also be benchmarked using --mask (see doc/MASK). > > Hashcat uses mask acceleration in benchmarks by default. As the text > above hints, we're not (yet). Try "--test --mask" for a whole different > ballpark of speed. magnum, I think we should revise the message to be: Warning: This format should be used and benchmarked with --mask (see doc/MASK). Allen, would the above change have avoided the confusion for you? If not, do you have a better suggestion? You may also use "--mask" along with other cracking modes to form hybrid modes. Examples: https://www.openwall.com/lists/john-users/2019/03/25/13 This is the way to go when using JtR against fast hashes on GPU. Alexander
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