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Date: Thu, 20 Aug 2015 20:04:20 +0200
From: Agnieszka Bielec <>
Subject: Re: PHC: Argon2 on GPU

2015-08-19 18:39 GMT+02:00 Solar Designer <>:
> I think you may try working on ulong16 or ulong8 instead.  I expect
> ulong8 to match the current GPU hardware best, but OTOH ulong16 makes
> more parallelism apparent to the OpenCL compiler and allocates it to one
> work-item.  So please try both and see which works best.

I created something using ulong8, it's almost not noticeable better
speed in my laptop but worse on super both cards, no idea if this is
what you wanted ( I think that not ), you can take a look on branch

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