Frontier

Oak Ridge National Laboratory

Node type

CPU Accelerator Interconnect

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Frontier node architecture

Frontier is operated by Oak Ridge National Laboratory in United States. This profile covers the documented compute inventory.

Cluster interconnect: HPE Slingshot 11 · 200 Gb/s per NIC. Topology: Dragonfly.

MI250X compute

Node count: 9856
CPU: AMD optimized EPYC · 64 cores
CPUs per node: 1
Accelerator: AMD Instinct MI250X
Physical accelerators per node: 4
Host / unified memory: 512 GB DDR4
Accelerator memory: 128 GB HBM2e per accelerator
Local accelerator links: Infinity Fabric
CPU-to-accelerator link: Infinity Fabric
Storage: 2 × 1.92 TB NVMe SSD

Scope and uncertainty

Each MI250X has two GPU compute dies: four physical accelerators appear as eight logical GPU devices. Diagram counts physical accelerators.

Not verified means a detail has not been confirmed in this catalog. Diagrams are schematic; node indices are illustrative, not physical hostnames. Data checked 13 September 2026.

Sources

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