Summit

Summit is the next leap in leadership-class computing systems for open science. With Summit we will be able to address, with greater complexity and higher fidelity, questions concerning who we are, our place on earth, and in our universe.

Summit will deliver more than five times the computational performance of Titan’s 18,688 nodes, using only approximately 4,600 nodes when it arrives in 2018. Like Titan, Summit will have a hybrid architecture, and each node will contain multiple IBM POWER9 CPUs and NVIDIA Volta GPUs all connected together with NVIDIA’s high-speed NVLink. Each node will have over half a terabyte of coherent memory (high bandwidth memory + DDR4) addressable by all CPUs and GPUs plus 800GB of non-volatile RAM that can be used as a burst buffer or as extended memory. To provide a high rate of I/O throughput, the nodes will be connected in a non-blocking fat-tree using a dual-rail Mellanox EDR InfiniBand interconnect.

Upon completion, Summit will allow researchers in all fields of science unprecedented access to solving some of the world’s most pressing challenges.

Specifications and Features

  • Processor: IBM POWER9™
  • GPUs: NVIDIA Volta™
  • Nodes: ~4600
  • Node Performance: >40TF
  • Memory/node: 512GB DDR4 + HBM
  • NV Memory/node: 1600GB
  • Total System Memory: >10PB DDR4 + HBM + Non-volatile
  • Interconnect Topology: Non-blocking InfiniBand Fat Tree
  • Peak Power Consumption: 15MW

System Support

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

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