Date: Fri, 14 Aug 2015 21:44:10 +0300 From: Solar Designer <solar@...nwall.com> To: john-dev@...ts.openwall.com Subject: Re: PHC: Argon2 on GPU Agnieszka, magnum - On Fri, Aug 14, 2015 at 08:40:28PM +0200, Agnieszka Bielec wrote: > I'm not sure if you fully understand this post > http://www.openwall.com/lists/john-dev/2015/08/14/42 > on super, john computes gws, 1024 is the best, it prints: > Local worksize (LWS) 64, global worksize (GWS) 1024 > but actually 256 is set and these coputations are for GWS=256, if you > specify GWS=1024 speed is better and really for GWS=1024 > for argon2d is similar problem but it's not so bad : GWS isn't equal > to 256 but it's between 512 and 1024 > > this shows that there is a bug in auto tune or in my configuration ( > but if there is a bug in my configuration there is also in auto tune, > even if I configured something wrong john shouldn't show that GWS=1024 > when GWS=256) > but I don't have this problem on my laptop (another or it's just only > that first call of crypt_all() is just slower) OK, you and magnum need to figure this out and fix whatever bug there is. Alexander
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