Date: Sat, 13 Jul 2013 22:17:38 +0200 From: Katja Malvoni <kmalvoni@...il.com> To: john-dev@...ts.openwall.com Subject: Re: Parallella: bcrypt On Sat, Jul 13, 2013 at 9:45 PM, Katja Malvoni <kmalvoni@...il.com> wrote: > On Sat, Jul 13, 2013 at 9:09 PM, Solar Designer <solar@...nwall.com>wrote: > >> [..] > > Oh, these times are much better than what you reported before. IIRC, >> previously we were unable to get much better than 30 ms - and now you're >> saying you're down to 20 ms already, which means almost 50 c/s. Your >> 20.7 ms should give us 773 c/s on 16-core Epiphany, which is roughly the >> speed of one modern x86 CPU core - but at much lower power usage. The >> 64-core Epiphany is thus comparable to Core 2 Quad from a few years ago - >> but again, at much lower power usage. > > > I haven't realised that I never reported those, I'm sorry about that. This > improvement happened when I changed Epiphany code so that it can be > integrated in JtR. Most of it comes from returning result in BF_binary > instead of returning much bigger char array. > > [...] > > Oh, I made a mistake - execution time of 20 ms doesn't include data transfers, it's only computation and waiting for cores to signal done. With data transfers included (loading *.srec files on cores, transferring key and salt and starting the cores) it's 85.76 ms, 2246.917 ms and 8781.541 ms. Katja Content of type "text/html" skipped
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