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Date: Tue, 25 Sep 2012 21:37:50 +0200
From: magnum <>
Subject: Re: bitslice DES on GPU

On 25 Sep, 2012, at 13:43 , Sayantan Datta <> wrote:

> I've a patch that should allow 10% increase in non-overhead speed. However it is using byte addressable store. Do i post two kernels? Is there a way to detect 4xxx series gpus in the kernel?
> Regards,
> Sayantan

Claudio has added a bunch of helper functions to common-opencl.c that is probably just what you need. I don't know the details but you'll probably get the idea if you have a look (also check out the new opencl_device_info.h that can be included by kernels).

There are also functions for detecting CPU vs GPU, AMD vs nvidia, amount of local memory and a lot of other stuff.


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