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Re: hardware acceleration available for Tor ? On FreeBSD ?

On Mon, 12 Oct 2009, Scott Bennett wrote:

- Is anyone _actually_ performing SSL operations in CUDA using GPUs,
if not, how much of my free time and mindshare over the next year will
spent on that fascinating question ?

If they are, they're most likely not doing it under FreeBSD. The
time I checked, there was still no support for either CUDA (nVidia) or>
Streams (ATi) under FreeBSD. :-(

Yes, it continues to be a disappointment that CUDA is not available on FreeBSD or on Solaris for that matter.

It's interesting to note that this is not idle chatter - it appears that CUDA is a reasonable platform for AES in hardware:


and further, Nvidia documentation provides instruction and sample code for doing just that:


They specifically mention CTR mode:

"The decryption for CTR can be done following the same steps. Thus we can encrypt and decrypt each cipher block independently, giving us the benefit of true parallelization."

I'll bet ops per watt and ops per dollar are all better on the purpose-built encryption hardware ... it would still be more fun to connect a few quadro plex external units to my Tor node.
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