According to wikipedia, the Frontier supercomputer is the largest supercomputer in the world, at 1 exaFLOPS, and cost 600 million USD.
I am quite surprised that the largest supercomputer only has 1 exaFLOPs, because of the following:
The AMD Instinct MI250X has about 100 teraFLOPS, i.e. 0.1 petaFLOPS.
Hence, if you stick about 10000 MI250X's together, you get 1 exaFLOPS.
The price of an AMD Instinct MI250X is about 10k USD, so 10000 of them are about 100 million USD.
This would suggest that the actual workhorse of the supercomputer is only 20% of its cost (since Frontier cost 600 million USD).
Maybe I did my calculation incorrectly, but if not then this surprises me. Why are the GPU's such a small fraction of the actual cost?
ps. Not sure which stackexchange to use for this if computer science is the wrong one.