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High Performance & Scientific Computing

Available Resources



The resources provided by OIT HPSC includes three clusters, two for open research and one for processing sensitive information.  Each cluster has a Lustre file system with petabyte scale storage capacity.  These resources can be used by faculty and student researchers and for academic coursework.

To obtain access to use the resources, claim your account at the ISAAC User Portal by choosing Request an ISAAC Account in the menu on the left.

ISAAC Legacy cluster for Open Research

  • 303 compute nodes of various types including these noteworthy types:
    • 1 Intel Xeon E5-2687Wv4 processor (24 cores) with 1 TB memory
    • 4 Cascade Lake Refresh nodes with 1,536 GB memory
    • 2 AMD EPYC 7542 (32 core) node with 128 GB memory
  • 4 GPU nodes
    • 2 Skylake nodes with 1x NVIDIA V100S GPUs (UT)
    • 2 Cascade Lake Refresh nodes with 1x NVIDIA V100S GPUs (UT)
    • 4 beacon nodes with 1x NVIDIA M60 GPUs (UTK/UTHSC)
  • 8,662 CPU cores
  • Nodes with 32 gigabytes to 1.5 terabytes memory
  • 2.7 petabytes of Lustre storage in /lustre/haven
  • 4 Data Transfer Nodes with 10 Gb/s bandwidth and Globus

ISAAC Next Generation cluster for Open Research

  • 96 compute nodes
    • 90 nodes with Intel Gold 6248R processors (48 cores) and 192 gigabytes memory (UT/UTK/private)
    • 3 nodes with Intel Gold 6348 processors (56 cores) and 2 TBs memory (UTK)
    • 2 nodes with Intel Platinum processors (64 cores) and 256 GB memory (private)
    • 1 node with AMD Milan 7763 processors (64 cores) and 256 gigabytes memory (private)
  • 19 GPU nodes
    • 9 GPU nodes with 1x NVIDIA V100S GPUs (UTK)
    • 6 GPU nodes with 2x NVIDIA V100S GPUs (UT/private)
    • 3 GPU nodes with 2x NVIDIA A16 GPUs (private)
    • 1 nodes with 4x NVIDIA A40 GPUs, 54 TBs NVMe scratch space/burst buffer (UTK)
  • 5,632 total CPU cores
  • 2.9 petabytes of Lustre storage in /lustre/isaac
  • 1 Data Transfer Node with 80 Gb/s bandwidth and Globus

ISAAC Secure Enclave cluster

  • 60 compute nodes, 2 nodes with 2x NVIDIA V100S GPUs
  • 2,848 CPU cores
  • Nodes with 192 gigabytes of memory
  • 1.3 petabytes of Lustre storage in /lustre/sip
  • 1 Data Transfer Node with 10 Gb/s bandwidth and Globus

Details of the types of compute nodes available that make up each cluster is listed in the System Overview page for each cluster (listed in menus on the left).