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Date: Fri, 3 May 2013 15:47:13 +0200
From: magnum <>
Subject: Re: OpenCL formats lacking auto-tuning

On 3 May, 2013, at 15:33 , Claudio André <> wrote:
> 2013/5/3 magnum <>
> On 3 May, 2013, at 5:39 , Solar Designer <> wrote:
> > I am bringing this to the list.  Many of our OpenCL formats, in
> > particular those by Lukas and/or Dhiru - including at least
> > agilekeychain-opencl, keychain-opencl, zip-opencl - lack LWS/GWS
> > auto-tuning, and indeed the defaults result in poor performance at
> > least on 7970.
> I think they all do LWS tuning, using Lukas' shared function. Claudio did some good work with shared functions for GWS tuning.
> BTW: this shared GWS function is only on bleeding.

True. But I think we should release unstable pretty much as-is, and make any enhancement of this caliber to bleeding-only anyway.


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