Date: Wed, 26 Aug 2015 10:35:24 +0300 From: Solar Designer <solar@...nwall.com> To: john-dev@...ts.openwall.com Subject: Re: LWS and GWS auto-tuning On Tue, Aug 25, 2015 at 08:36:44PM +0200, magnum wrote: > Ratio: 0.79120 real, 1.11111 virtual sha512crypt-opencl, crypt(3) $6$ I cannot confirm the slowdown for sha512crypt-opencl on Tahiti. To me, it auto-tunes similarly, and results in similar poor speed. BTW, it appears to be limited to LWS 256. I think 512 might work better, like it does on TITAN (where 512 results in lower GWS, too). But I can't easily find where that limit is. magnum, can you? Alexander
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