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Date: Fri, 14 Aug 2015 17:47:38 +0200
From: Agnieszka Bielec <>
Subject: Re: PHC: Argon2 on GPU

2015-08-14 17:37 GMT+02:00 Solar Designer <>:
> On Fri, Aug 14, 2015 at 05:31:07PM +0200, Agnieszka Bielec wrote:
>> 2015-08-14 17:20 GMT+02:00 Solar Designer <>:
>> > And just as important: figure out why the speeds are so poor, compared
>> > to what you're getting on your laptop, as well as to what you had
>> > reported earlier (IIRC).
>> when earlier? I remember only earlier tests when I had another costs
> Here you reported ~3k c/s at ~1.5 MB on super's Tahiti for Argon2d:
> Now you're reporting ~10x lower speeds for the same GPU.

indeed, this is even the same version that I'm using now. I had a
situation that I runned tests, runned again and I noticed that speed
is worse, typed command 'w', super was not idle, there was Kai on
super so I e-mailed to him, he turned off his job but after that speed
was the same (worse) I though that this is only problem with my eyes
or memory but now I see that not, maybe this have nothing common with
Kai, he said that he didn't touched GPU's.  Solar, can you restart

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