I see this kind of question before on this topics, but lots of them seems very old. Arcording to Moore's law, computer speed doubles every two year, so i wonder how fast have they archive these days. Can supercomputer capable of doing such a thing?
My laptop, running an i7-4XXX can hit about 1 millions keys per second using a vanity address generator at its peak. This usually slows down as it heats up, and it is certainly possible to go faster with GPUs.
Assuming the strongest hardware today is 10000x faster, or can generate 10 billion keys per second, you will reach 10^18 in
10^18/10^10 seconds, which is 1157 days.
Note that the Bitcoin keyspace is much larger, about 2^256 (although I believe you "only" need to crack 2^128 to start breaking into stuff with high probability, but I can't find that reference right now). For 2^256 keys, even at 10 billion per second, it would take you
3.672×10^59 years, which is
2.7×10^49 times the age of the universe.
You would only need to go through 2^160 combinations to break a p2pkh address, since you only need to beat the HASH160. This reduces your time to only