256 card x Tesla V100 32GB is close to or around 300 billion keys per second. I'm going after a 256 bit key with cpu now.
Can 256 card x Tesla V100 32GB try with 64 bit puzzle #64 still can not crack in one day.
and still can not crack 120 bit puzzle #120 by kangaroo
need to discover other algorithms more
No, it would take up to 2 years or a little bit more to search the whole space of 2^64 with 256 card x Tesla V100 32GB.