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Date: Wed, 3 Mar 2021 12:17:33 +0100 From: Solar Designer <solar@...nwall.com> To: john-users@...ts.openwall.com Subject: Re: Splitting mask keyspace On Wed, Mar 03, 2021 at 11:49:15AM +0100, Micha?? Majchrowicz wrote: > Sorry for repost but I thought it's our previous conversation :D > > I have some results from testing --fork option. On a test node it was > working pretty stable but to be honest I don't like the idea of > "overbooking forks". It does kinda work but has limited functionality. > If I have see2, avx and avx2 nodes with same number of cores I have to > use 8, 16 and 32 in order to correctly "overbook". The issue is that > on some of multi core machines I don't want to use all cores for john. > I understand why it's designed like this but since I can already > overbook forks it would be nice to have an option to ONLY overbook > node option so it would be divisible by number of forks. I think > adding this would be much simpler than splitting the correlation > between fork and node and would solve my issue :) Now this is a feature request, and you've correctly already created a GitHub issue for it: "Allow fork divisible node values" https://github.com/openwall/john/issues/4584 My reply: "What I was thinking is that we should allow e.g. --fork=32 --node=200-263/333, which would run only 32 processes yet use up 64 node numbers (each process would correspond to two virtual nodes, taking their portions of the keyspace)." If I understood you correctly, then I agree it's something we'd want to implement (but I don't know who will do it nor when). Let's continue this sub-thread on the GitHub issue only. Alexander
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