The Frontier 1.5EF Supercomputer (OLCF)
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Frontier Spec Sheet
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https://www.olcf.ornl.gov/wp-content/uploads/2019/05/frontier_specsheet.pdf

>   "The Frontier system will be composed of more than 100 Cray Shasta
    cabinets with high density compute blades powered by HPC and
    AI-optimized AMD EPYC processors and Radeon Instinct GPU accelerators
    purpose-built for the needs of exascale computing. The new
    accelerator-centric compute blades will support a 4:1 GPU to CPU ratio
    with high speed AMD Infinity Fabric links and coherent memory between
    them within the node. Each node will have one Slingshot interconnect
    network port for every GPU with streamlined communication between the
    GPUs and network to enable optimal performance for high-performance
    computing and AI workloads at exascale."