Eos is a 736-node Cray® XC30™ cluster with a total of 47.104TB of memory. Its processor is the Intel® Xeon® E5-2670. It features 16 I/O service nodes and 2 external login nodes. Its compute nodes are organized in blades. Each blade contains 4 nodes. Every node has 2 sockets with 8 physical cores each. Intel’s Hyper-Threading (HT) Technology allows each physical core to work as 2 logical cores so each node can function as if it has 32 cores. In total, the Eos compute partition contains 11,776 traditional processor cores (23,552 logical cores with HT Technology enabled).

Specifications and Features

  • Architecture: Cray® XC30™
  • Processors: Intel® Xeon® E5-2670
  • Cabinets: 4
  • Nodes: 736
  • Cores/node: 16
  • Total cores: 11,776 (23,552 logical cores with HT enabled)
  • Memory/node: 64GB
  • Memory/core: 4GB
  • Interconnect: Aries

System Support

The System User Guide is the definitive source of information about Eos, and details everything from connecting to running complex workflows. Please direct questions about Eos and its usage to the OLCF User Assistance Center by emailing help@olcf.ornl.gov.

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