Frontier (supercomputer)
Frontier or OLCF-5 is an exascale supercomputer being developed at the Oak Ridge Leadership Computing Facility. It will be the United States' first exascale computer with a target computation performance of ~1.5 exaFLOPS. It is being built at a cost of US$600 million. The machine began deployment in 2021 and is expected to reach full capability in 2022.

It is expected to use a combination of AMD Epyc CPUs and Radeon Instinct GPUs, consume 30 MW, and occupy 100  rack cabinets.

Frontier will have coherent interconnects between CPUs and GPUs, allowing GPU memory to be accessed coherently by code running on the Epyc CPUs.

See also 

 Aurora (supercomputer)
 Fugaku (supercomputer)
 Summit (supercomputer) or OLCF-4

References 

GPGPU supercomputers
Oak Ridge National Laboratory
Exascale computers