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Date: Sun, 10 Feb 2013 20:37:48 +0100
From: magnum <john.magnum@...hmail.com>
To: john-dev@...ts.openwall.com
Subject: Re: remaining DMG issues

On 10 Feb, 2013, at 12:41 , Solar Designer <solar@...nwall.com> wrote:
> On Sun, Feb 10, 2013 at 12:36:22PM +0100, magnum wrote:
>> This goes for all pbkdf2 OpenCL formats. I hope it's on Dhiru's to-do list. I have provided a generic split kernel that can be used.
> 
> Somehow it appears that our PBKDF2-HMAC-SHA-1 kernels are less
> susceptible (or even not susceptible) to ASIC hangs. %-)  I just
> realized that even with MSCash2, the kernel running time is about 800 ms
> with default GWS on 7970 - yet we were able to successfully use it in
> last year's Crack Me If You Can.
> 
> dmg-opencl is now running at 1599 c/s and GWS=81920 for over an hour,
> and there's still no hang.
> 
> So maybe there's something in those kernels that avoids the problem.

I always thought the main problem was the driver, and you upgraded it. Do we get ASIC hangs from any format now?

magnum

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