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Message-ID: <20120619002521.GA15713@openwall.com>
Date: Tue, 19 Jun 2012 04:25:21 +0400
From: Solar Designer <solar@...nwall.com>
To: john-dev@...ts.openwall.com
Subject: Re: bf-opencl
Sayantan -
On Fri, Jun 15, 2012 at 09:16:45AM +0530, SAYANTAN DATTA wrote:
> The above problem is now fixed.
Thank you! Your code works fine for me now. I briefly tried tuning the
parameters, but couldn't get it to run faster than ~4150 c/s. So I
cheated:
XAUTHORITY=~user/.Xauthority DISPLAY=:0 aticonfig --od-enable --od-setclocks=1250,1375
This brought the speed to:
Benchmarking: OpenBSD Blowfish OpenCL [BF_OPENCL]... DONE
Raw: 5556 c/s real, 238933 c/s virtual
which is about the same as the CPU - meaning we can double the speed by
using both the CPU and the GPU at once (two instances of John).
The card stays cool (71 C) since we're under-utilizing the GPU anyway.
...Oh, I got "ASIC hang" after:
guesses: 345 time: 0:00:03:28 0.00% c/s: 5449 trying: 123456 - random
Whatever. I'll bring it back to stock clocks (925 MHz core).
BTW, 1300 MHz resulted in John's self-test failure, and 1250 MHz worked
for 3.5 minutes as you can see. I don't know if the "ASIC hang" was
related to the overclock or not.
Alexander
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