Date: Tue, 12 Nov 2013 21:28:09 +0100 From: Katja Malvoni <kmalvoni@...il.com> To: john-dev@...ts.openwall.com Subject: Re: bcrypt-parallella on 64-core (was: Katja's weekly report #13) Hi Alexander, On Tue, Nov 12, 2013 at 9:18 PM, Solar Designer <solar@...nwall.com> wrote: > On Tue, Nov 12, 2013 at 07:33:04PM +0100, Katja Malvoni wrote: > > If I transfer keys only when changed, performance on E16 is 1207 c/s and > on > > E64 it's 4812 c/s. > > And code seems to be reliable. I left "while :; do rm -f john.log > john.pot; > > seq 0 49999 | sudo -E LD_LIBRARY_PATH=$LD_LIBRARY_PATH ./john -stdin > > -form=bcrypt-parallella ~/pw-bcrypt-2salt-50k 2>&1 > /dev/null | fgrep > > 0:00; done" running for half an hour, it cracked all hashes on both E16 > and > > E64 system. > > This is exciting news! I recall you didn't expect to get all 64 cores > working for bcrypt on this chip (because of the errata). > That is correct, since this approach of using local memory instead of shared DRAM failed earlier I didn't even think of it when it turned out that some cores have problems with fetching data from external memory. > Is the code committed? > Yes it is - git clone https://github.com/kmalvoni/JohnTheRipper -b master-E64 Katja Content of type "text/html" skipped
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