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Message-ID: <20150428011927.GA4161@openwall.com> Date: Tue, 28 Apr 2015 04:19:27 +0300 From: Solar Designer <solar@...nwall.com> To: discussions@...sword-hashing.net Subject: Re: [PHC] Re: Updated tests document (version 2) On Mon, Apr 27, 2015 at 04:55:33PM -0700, Bill Cox wrote: > I see. It does seem odd to ask the testing volunteer to create his own > interface to the candidates. > > I think there are just 3 candidates now supporting multiple threads. It is > surprisingly hard to guestimate parallel thread performance from parallel > process performance. The reasons remain mysterious to me, but the short > version is that each thread seems to want sole access to it's own page. > Mixing nearby read/writes between threads thrashes something, maybe the > translation lookaside buffer? > > I guess I'd like guidance from the PHC panel on this issue, if they want to > see multi-threaded performance. It seems like an important attribute to > me, and there's no knob in the PHS interface. I would be interested, personally and as a panel member, to see those 3 candidates' (is that Argon2, Lyra2, yescrypt?) multi-threaded performance included in Milan's reports. Bill, maybe you can contribute to Milan's code? I think it's all on GitHub, so perhaps you can make a pull request. BTW, Argon2 is still not formally accepted. Yet I'd like to see more of its benchmarks. Alexander
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