Date: Tue, 22 Apr 2014 23:30:04 +0000 From: yungai <BM-2DBq3nJF7GXKr6Nk6EHzvxxGBec6gQn2NB@...message.ch> To: john-users@...ts.openwall.com Subject: recommended way to crack a descrypt hash in a multi-gpu setup (HD 7990) Hi there, in recent thread I read about the --fork feature in conjunction with GPUs but simply trying --fork=2 didn't work for me (running a current bleeding-jumbo git version). So I wanted to ask you what the recommended way to crack a hash with multiple GPUs currently is? second question: What kind of performance can one expect when cracking descrypt on a HD 7990? I remember seeing benchmarks on john-dev(?) with ~102000 Kc/s but I can't seem to find that benchmark anymore I get on my HD 7990 (with device 0): ~47000 Kc/s so that would be near the value I remembered if you multiply that by two for the second GPU.
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