> > i'm reading through the first presentation published of this project . its
> > being said that with 80 nodes the tables will be generated in 3 months .
> > what is a Node ?
> > suppose we wanted to fund this project to finish the tables in 1 month . do
> > you have financial estimations ? how many GTX285 or GTX295 would we need ?
> > thanks
> >
since the exact amount of available keystream is not yet clear, we do not
know ourselves how much we will be generating in the end.
A GTX295 will produce about 2^30 A51 rounds per second, so to reach
2^57 in one month you need 52 cards. 30% overhead from chain merges
makes 70 GTX295. this values of 140 GT200 GPUs one month long is
different than our previous estimate of 240, because the new code is
faster and the old estimate was not so accurate.
If we are lucky and get more known plaintext it can be
done with 2^54 instead of 2^57, which would reduce the hardware requirement
to 10 GTX295.
There is to much uncertaincy right now as to how big the tables really need
to be (and this could also be different for different countries, gsm networks
or particular BTS or handset implementations).
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