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Date: Fri, 29 Jun 2012 12:53:50 +0530
From: SAYANTAN DATTA <std2048@...il.com>
To: john-dev@...ts.openwall.com
Subject: Re: 1.7.9-jumbo-6

On Fri, Jun 29, 2012 at 12:50 PM, Solar Designer <solar@...nwall.com> wrote:

> On Fri, Jun 29, 2012 at 12:44:33PM +0530, SAYANTAN DATTA wrote:
> > On Fri, Jun 29, 2012 at 12:35 PM, Solar Designer <solar@...nwall.com>
> wrote:
> >
> > > pre-configured for AMD Radeon HD 7970, will likely fail on others
> unless
> > >  WORK_GROUP_SIZE is adjusted in opencl_bf_std.h and opencl/
> bf_kernel.cl
> >
> > Yes it is okay. Also add this simple expression to calculate
> > WORK_GROUP_SIZE = (usable LDS size per WORK_GROUP in KB)/4.
> > eg.Usable LDS_SIZE per Work Group is 32KB for 7970 although actual LDS
> size
> > is 64 KB.
>
> That's too much detail for what I am writing.  The text is too long as
> it is.
>
> > Or if you want I could prepare a chart for WORK_GROUP_SIZE for different
> > devices.
>
> You may create this wiki page:
>
> http://openwall.info/wiki/john/GPU/bcrypt
>
> If you do this right now, I might refer to it.
>
> Thanks,
>
> Alexander
>

Preparing the chart will take some time but I can add the expression now.

Sayantan

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