Date: Wed, 30 Jun 2010 09:55:42 +0200 From: "Magnum, P.I." <rawsmooth@...dband.net> To: john-users@...ts.openwall.com Subject: OpenMP vs lots of cores I haven't had the time to try the OpenMP stuff but I sure will. How far will it scale in the current versions? I mean, what if you had 96 cores on a single host? It won't use all of them, right? Or would it, given enough what? Hashes? Salts? I suppose even if it can use all of them, the overhead will at some point make it ineffective, perhaps even just slow it down. Obviously though, MPI and MP could be used together. Say we have 96 cores and fire off 12 MPI nodes using 8 MP threads each. Naturally some testing would be needed to find the best mix. thanks magnum
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