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Date: Mon, 26 Mar 2012 04:48:26 +0800
From: myrice <>
Subject: Re: Hello, interested on slow hash and fast hash on GPU

Hi, Solar,

Thank you for your answer. What I was done last week is :

1) I read papers you recently posted. And I emailed author of qhasm-cudasm
for requesting the tool.
2) The bitslice implementations of SHA-256 or SHA-512 on GPUs are worth
discussing. I read your bitslice implementation of MD5. It takes advantages
of sse2 to compute MD5 hashes at one time. Now raw-sha256-cuda
implementation already use SIMD and/or bitslice. I tried use more
threads(than now just 1) to compute one hash. However, the data dependence
make it hard to implement. I am looking forward ideas of optimization.
3) As you suggested, I am starting write DES format on cuda. I will make
another post to track my progress and clarify questions on it.


Dongdong Li

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