A critical resource for Texas researchers

Lonestar6 is the newest system in TACC's Lonestar series of high performance computing systems that are deployed specifically to support Texas researchers. The system provides a balanced set of resources to support simulation, data analysis, visualization, and machine learning.

Lonestar6 is funded through the University of Texas Research Cyberinfrastructure, a collaboration between TACC and the University of Texas System, and is supported by partners at Texas A&M University, Texas Tech University, and the University of North Texas, as well as a number of research centers and faculty at UT-Austin, including the Oden Institute for Computational Engineering & Sciences and the Center for Space Research. Lonestar6 is available to researchers at all of these institutions.

 Lonestar6 User Guide

System Architecture:

Lonestar6 is composed of 560 compute nodes and 16 GPU nodes. The system employs Dell Servers with AMD's EPYC Milan processor, Mellanox's HDR Infiniband technology, and 8 PB of BeeGFS based storage on Dell storage hardware. Additionally, Lonestar6 supports GPU nodes utilizing NVIDIA's Ampere A100 GPUs to support machine learning workflows and other GPU-enabled applications.

The compute nodes are housed in four dielectric liquid coolant cabinets and 10 air-cooled racks. The air cooled racks also contain the 16 GPU nodes. Each compute node has two AMD EPYC 7763 64-core processors (Milan) and 256 GB of DDR4 memory. Each GPU node also contains two AMD EPYC processes and two NVIDIA A100 GPUs each with 40 GB of high bandwidth memory (HBM2).

Compute Nodes

Lonestar6 hosts 560 compute nodes with 5 TFlops of peak performance per node and 256 GB of DRAM. Node Specifications:

  • CPU: 2x AMD EPYC 7763 64-Core Processor ("Milan")
  • Total cores per node: 128 cores on two sockets (64 cores / socket )
  • Clock rate: 2.45 GHz (Boost up to 3.5 GHz)
  • RAM: 256 GB (3200 MT/s) DDR4
  • Local storage: 144GB /tmp partition on a 288GB SSD.