Date: Wed, 12 Nov 2014 21:39:07 +0100 From: magnum <john.magnum@...hmail.com> To: john-users@...ts.openwall.com Subject: Re: Xeon Phi support? On 2014-11-12 08:17, Royce Williams wrote: > Given the recent sub-$200 pricing for the Xeon Phi 3151P, and the > relative scarcity of inexpensive ZTEX boards :-) , what are the > potential and likely performance, and level of effort required to use > Intel Phi boards with John the Ripper? Just looking for some rough > approximations. Using OpenCL is pretty straightforward - as with any other device you just need to have drivers for it and JtR will accept it. Solar/Openwall has a Xeon Phi 5110P in a dev box. The (admittedly old) drivers currently installed on that box are *awful*, they fail compiling many kernels and others segfault when running. This driver is worse than Apple's OpenCL drivers for nvidia/AMD two years ago, which would otherwise easily hold the world record in crappiness. Right now I'm not interested in playing with the Phi for that reason alone. magnum
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