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Date: Wed, 25 Jul 2012 18:12:00 +0800
From: myrice <>
Subject: Re: Result of hard core password generation on 7970


On Tue, Jul 24, 2012 at 8:52 PM, myrice <> wrote:
> Hi, Solar,
> Here is the result, with password generation on [a-zA-Z][a-zA-Z]
> The code is here on PG-test branch:
> raw-md5-opencl with PG
> 1
> guesses: 0  time: 0:00:04:52 0.00%  c/s: 196758K
> 1000
> guesses: 2  time: 0:00:01:44 0.00%  c/s: 30660M
> 1000000
> Unable to get, will reduce the max_keys_per_crypt number or divided it
> to 1000s kernel's run(every run with fixed 1000 loaded hashes), so
> loaded hashes could take advantages of constant memory.

Here is the new rough result

1: with 2048*8, ~900M c/s, but with 2048*16, it is ~500M c/s

1000: with 2048*8, ~45G = ~45M, with 2048*16, ~90G = ~ 45M

1M: still cannot get, I reduce the global work size to 128 and only
append[a-e][a-e], it is very slow. And the kernel cannot finished with

I am think about compare, with 1M hashes, the loop inside one thread
increased to 26*26*1M = 676M, it is very large for a thread.


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