Hewlett Packard Enterprise Frontier is the world's first exascale supercomputer.
Hosted: Oak Ridge Leadership Computing Facility (OLCF) in Tennessee, United States
Cooling system: use liquid-cooler
Power usage: 21 megawatts (MW)
Memory: internal 75 TB/s read / 35 TB/s write / 15 billion IOPS flash storage system, along with the 700 PB Orion site-wide Lustre filesystem.
IT became operational in 2022. As of December 2023, Frontier is the world's fastest supercomputer. It is based on the Cray EX and is the successor to Summit (OLCF-4). Frontier achieved a Rmax of 1.102 exaFLOPS, which is 1.102 quintillion floating-point operations per second, using AMD CPUs and GPUs.
Measured at 62.86 gigaflops/watt, Frontier topped the Green500 list for most efficient supercomputer, until it was dethroned in efficiency by Flatiron Institute's Henri supercomputer in November 2022.
Frontier uses 9,472 AMD Epyc 7453s "Trento" 64 core 2 GHz CPUs (606,208 cores) and 37,888 Instinct MI250X GPUs (8,335,360 cores).
It occupies 74 19-inch (48 cm) rack cabinets. Each cabinet hosts 64 blades, each consisting of 2 nodes.
Blades are interconnected by HPE Slingshot 64-port switches that provide 12.8 terabits/second of bandwidth. Groups of blades are linked in a dragonfly topology with at most three hops between any two nodes. Cabling is either optical or copper, customized to minimize cable length. Total cabling runs 145 km (90 mi).
Each node consists of one CPU, 4 GPUs, and 4 terabytes of flash memory. Each GPU has 128 GB of RAM soldered onto it.
Frontier has coherent interconnects between CPUs and GPUs, allowing GPU memory to be accessed coherently by code running on the Epyc CPUs.