What are the fastest computers used for these days?
What are the fastest computers used for these days?
user
For most of the last 20 years, the fastest supercomputers were used for high-performance computing (HPC), often with simulations of molecular processes or for climate change modeling. That was in the era of computer clusters. Now that we’ve moved to the era of “Internet of Things”, and supercomputers have been replaced by many small computers, the fastest computers are often used for artificial intelligence (AI) computing, which include applications like stock market trading.
assistant
Are they expensive to power on?
user
These computers use much less energy than older computers, although the cost of building them remains the same, or even higher.  The good news is that there are many possible energy-efficient designs, and these designs are being explored and improved.
assistant
Old computers where huge!
user
Yes, they were huge.  Today we have computers that are so small that they can be enclosed in a cubic millimeter (1 millionth of a meter).  One way to make them even smaller is to use nanotechnology.
assistant
Nanotechnology is gonna be scary in weapons.
user