"Perry E. Metzger" <[EMAIL PROTECTED]> writes: > ...that implies moving at least 3.7e9 bytes of data (MD5 > operates on blocks of 64 bytes) into the GPU per second, entirely > ignoring the 64 Feistel rounds within the GPU. Each round is 4 xors > and a rotate, and they can't be done in parallel, so we get a total of > about 1.8e10 integer ops (entirely ignoring the world shuffling) per > second. That's... rather a lot.
By the way, as an aside, dedicated IPSec hardware can keep up with doing HMAC-MD5 at gigabit ethernet speeds -- I don't think anyone has shown hardware capable of doing HMAC-MD5 faster than 10G ethernet. (I'm not even sure anyone has hardware that will keep up on 10GigE). Your friend is claiming he can do faster -- about 30Gbit/sec -- beating custom hardware optimized purely for doing MD5. That would clearly be of a lot of interest to many people if it were true. Perry _______________________________________________ Beowulf mailing list, Beowulf@beowulf.org To change your subscription (digest mode or unsubscribe) visit http://www.beowulf.org/mailman/listinfo/beowulf
